JP7198112B2 - Aromatic polycarbonate resin composition and molded article for optical use - Google Patents

Description

TECHNICAL FIELD The present invention relates to an aromatic polycarbonate resin composition and an optical molded article.

BACKGROUND ART Polycarbonate resins are excellent in impact resistance, heat resistance, transparency, etc., and are conventionally used for molded articles such as light guide plates, various lenses and nameplates.

For example, Patent Document 1 discloses an aromatic polycarbonate resin composition for a light guide plate, in which an aromatic polycarbonate resin having a specific molecular weight and a specific molecular weight distribution is blended with a stabilizer and a releasing agent.

Patent Literature 2 discloses a polycarbonate resin composition for optical moldings, in which a resin component obtained by blending a specific amount of a bead-shaped crosslinked acrylic resin having a specific diameter with a polycarbonate resin is blended with a fluorescent brightener.

In addition, for example, as disclosed in Patent Documents 3 to 6, various proposals have been made for resin compositions in which a polycarbonate resin and other materials are used in combination to obtain excellent light transmittance and improve the brightness of optical members. It is

JP 2007-204737 A Japanese Patent Application Laid-Open No. 09-020860 JP 2011-133647 A JP-A-11-158364 Japanese Patent Application Laid-Open No. 2001-215336 Japanese Patent Application Laid-Open No. 2004-051700

However, the polycarbonate resin compositions disclosed in Patent Documents 3 to 6 are required as materials for light guide plates in recent years (in particular, there is a demand that there is no decrease in light transmittance even when molding is performed at high temperatures for thin molding. ) is not fully satisfied.
Furthermore, in recent years, even when a molded product with a thickness of about 0.3 mm (e.g., light guide plate) that has been molded and processed is exposed to high temperature conditions such as light irradiation for an extremely long period of time, there is little decrease in transparency ( A material with low cloudiness or coloration is being sought.

The present invention does not impair the properties such as heat resistance and mechanical strength inherent in polycarbonate resin, has excellent thermal stability, has high light transmittance, and is molded to a thin shape of about 0.3 mm. To provide an aromatic polycarbonate resin composition which hardly causes a decrease in transparency (hardly causes white turbidity and coloration) even when a product (for example, a light guide plate) is exposed to high temperature due to light irradiation or the like for an extremely long period of time. With the goal.

As a result of intensive studies by the present inventors in order to solve such problems, the aromatic polycarbonate resin (A), the specific polyether derivative (B) and the specific aromatic compound (C) are contained in predetermined amounts. The aromatic polycarbonate resin composition has excellent thermal stability and high light transmittance without impairing the inherent properties of polycarbonate resin such as heat resistance and mechanical strength. The molded product (light guide plate) of
The present inventors have found that even when exposed to high temperature conditions such as light source irradiation for a long period of time, there is little decrease in transparency (hard to cause cloudiness or coloration), and the present invention has been completed.

That is, the present invention provides an aromatic polycarbonate resin composition containing an aromatic polycarbonate resin (A), a polyether derivative (B) and an aromatic compound (C) represented by the following formula, wherein the aromatic polycarbonate resin (A) 0.1 to 3.0 parts by weight of the polyether derivative (B) and 0.0001 to 0.1 part by weight of the aromatic compound (C) with respect to 100 parts by weight The present invention provides an aromatic polycarbonate resin composition, wherein the skeleton portion of the polyether derivative (B) has an HLB value of -12 or more and 15 or less according to the Davis method, and an optical molded product obtained by molding the same.
formula:

The polycarbonate resin composition of the present invention does not impair the inherent properties of the polycarbonate resin such as heat resistance and mechanical strength, and has excellent thermal stability and high light transmittance. Even when exposed to high temperature conditions due to the environment and/or light source irradiation for a long period of time, the transparency is unlikely to decrease (white turbidity or coloration is unlikely to occur). Therefore, even for a thin molded product (light guide plate) with a thickness of about 0.3 mm, it is difficult for the hue to change and the appearance to deteriorate (deteriorate), and under high temperature conditions caused by the external environment or light source. Even when exposed to water for a long period of time, it hardly causes a decrease in transparency (hardly causes cloudiness or coloration), and has extremely high industrial utility value.

Embodiments will be described in detail below. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters and redundant descriptions of substantially the same configurations may be omitted. This is to avoid unnecessary verbosity in the following description and to facilitate understanding by those skilled in the art.

It should be noted that the inventors provide the following explanations for a full understanding of the invention by those skilled in the art and are not intended to limit the claimed subject matter by them.

The aromatic polycarbonate resin composition of the embodiment of the present invention contains an aromatic polycarbonate resin (A), a polyether derivative (B) and a specific aromatic compound (C), and optionally a phosphorus antioxidant (D), an epoxy compound (E) and/or other components, and the like.

In the embodiment of the present invention, the "aromatic polycarbonate resin (A)" is a polycarbonate resin based on an aromatic compound, and is not particularly limited as long as the aromatic polycarbonate resin composition aimed at by the present invention can be obtained. never Examples of such aromatic polycarbonate resins include polymers obtained by the phosgene method in which various dihydroxydiaryl compounds are reacted with phosgene, or by the transesterification method in which a dihydroxydiaryl compound is reacted with a carbonate such as diphenyl carbonate. can. Representative examples include polycarbonate resins made from 2,2-bis(4-hydroxyphenyl)propane (bisphenol A).

As the dihydroxydiaryl compound, in addition to bisphenol A, for example, bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)ethane, 2,2-bis(4-hydroxyphenyl)butane, 2 , 2-bis(4-hydroxyphenyl)octane, bis(4-hydroxyphenyl)phenylmethane, 2,2-bis(4-hydroxyphenyl-3-methylphenyl)propane, 1,1-bis(4-hydroxy- 3-tert-butylphenyl)propane, 2,2-bis(4-hydroxy-3-bromophenyl)propane, 2,2-bis(4-hydroxy-3,5-dibromophenyl)propane, 2,2-bis Bis(hydroxyaryl)alkanes such as (4-hydroxy-3,5-dichlorophenyl)propane; 1,1-bis(4-hydroxyphenyl)cyclopentane, 1,1-bis(4-hydroxyphenyl)cyclohexane and the like bis(hydroxyaryl)cycloalkanes; dihydroxydiaryl ethers such as 4,4'-dihydroxydiphenyl ether and 4,4'-dihydroxy-3,3'-dimethyldiphenyl ether; dihydroxydiaryls such as 4,4'-dihydroxydiphenylsulfide sulfides; dihydroxydiarylsulfoxides such as 4,4'-dihydroxydiphenylsulfoxide and 4,4'-dihydroxy-3,3'-dimethyldiphenylsulfoxide; 4,4'-dihydroxydiphenylsulfone, 4,4'-dihydroxy- Examples include dihydroxydiarylsulfones such as 3,3'-dimethyldiphenylsulfone. These can be used alone or in combination. In addition to these, piperazine, dipiperidylhydroquinone, resorcinol, 4,4'-dihydroxydiphenyl and the like can be used in combination.

Further, the dihydroxydiaryl compound may be used in combination with, for example, a trivalent or higher aromatic compound shown below.

Examples of the trihydric or higher phenol compound include phloroglucin, 4,6-dimethyl-2,4,6-tri-(4-hydroxyphenyl)-heptene, 2,4,6-dimethyl-2,4,6- tri-(4-hydroxyphenyl)-heptane, 1,3,5-tri-(4-hydroxyphenyl)-benzol, 1,1,1-tri-(4-hydroxyphenyl)-ethane and 2,2-bis -[4,4-(4,4'-dihydroxydiphenyl)-cyclohexyl]-propane and the like can be exemplified.

The viscosity average molecular weight of the aromatic polycarbonate resin (A) is preferably 10,000 to 100,000, more preferably 12,000 to 30,000. Incidentally, when producing such an aromatic polycarbonate resin (A), a molecular weight modifier, a catalyst, etc. can be used as necessary.

In an embodiment of the present invention, the polyether derivative (B) has an HLB value of the skeleton portion of −12 or more and 15 or less as determined by the Davis method, and the aromatic polycarbonate resin composition targeted by the present invention is obtained. It is not particularly limited as long as it can be obtained. Such polyether derivatives can include polyether derivatives represented by the following formula (1) as representative examples. The polyether derivative (B) may be a mixture (or combination), but if the HLB value of the mixture satisfies the above range, the HLB of all polyether derivatives contained in the mixture is the above need not satisfy the range of

Formula (1):
RO-(X-O)m(Y-O)n-R'
(Wherein, R and R' each independently represent a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, X represents a linear or branched alkylene group having 2 to 4 carbon atoms, Y is represents a linear or branched alkylene group having 2 to 5 carbon atoms, X and Y may be the same or different, m and n each independently represents 3 to 60, and m+n is 6 to 120 are shown.)
The weight average molecular weight of the polyether derivative represented by formula (1) is preferably 500-8000, more preferably 1000-4000.
A commercial item can be used for the polyether derivative represented by Formula (1).

The polyether derivative represented by formula (1) is
The following formula (1-1):
RO-(X-O)m(Y-O)n-R'
(Wherein, R and R′ each independently represent a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, X represents a linear alkylene group having 2 to 4 carbon atoms, Y represents 2 to 4 carbon atoms, represents a branched alkylene group of 5, m and n each independently represents 3 to 60, and m+n represents 8 to 90.)
The weight average molecular weight of the polyether derivative represented by formula (1-1) is preferably 500-8000, more preferably 1000-4000.
A commercially available product can be used as the polyether derivative represented by the formula (1-1).

The polyether derivative represented by formula (1) is
The following formula (1-2):
RO-(X-O)m(Y-O)n-R'
(Wherein, R and R′ each independently represent a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, X represents a linear alkylene group having 2 to 4 carbon atoms, Y represents 2 to 4 carbon atoms, 5, X and Y may be the same or different, m and n each independently represent 3 to 60, and m+n represents 6 to 100.)
The weight average molecular weight of the polyether derivative represented by formula (1-2) is preferably 500-8000, more preferably 1000-4000.
A commercially available product can be used as the polyether derivative represented by the formula (1-2).

The polyether derivative represented by formula (1) is
The following formula (1-3):
RO-(X-O)m(Y-O)n-R'
(Wherein, R and R′ each independently represent a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, X represents a branched alkylene group having 2 to 4 carbon atoms, Y represents a is a branched alkylene group, X and Y may be the same or different, m and n each independently represent 3 to 60, and m+n represents 6 to 120.)
The weight average molecular weight of the polyether derivative represented by formula (1-3) is preferably 500-8000, more preferably 1000-4000.
A commercially available product can be used as the polyether derivative represented by the formula (1-3).

The polyether derivative represented by the formula (1) includes a polyether derivative represented by the following formula (2), a polyether derivative represented by the formula (3), a polyether derivative represented by the formula (4), The polyether derivative represented by the formula (5), the polyether derivative represented by the formula (6), the polyether derivative represented by the formula (7), the polyether derivative represented by the formula (8), the formula ( It preferably contains at least one selected from the group including the polyether derivative represented by 9) and the polyether derivative represented by formula (10).

The polyether derivative represented by the formula (1-1) is a polyether derivative represented by the following formula (2), a polyether derivative represented by the formula (3), and a polyether represented by the formula (4) It preferably contains at least one selected from the group including the derivative, the polyether derivative represented by formula (5), and the polyether derivative represented by formula (6).

The polyether derivative represented by the formula (1-2) includes at least one selected from the group including the polyether derivative represented by the formula (7) and the polyether derivative represented by the formula (8). is preferred.

The polyether derivative represented by the formula (1-3) includes at least one selected from the group including the polyether derivative represented by the formula (9) and the polyether derivative represented by the formula (10). is preferred.

Formula (2):
HO-( _{CH2CH2CH2CH2O} )m ₍ CH _{( CH3} ) _CH2O ) _nH
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.)

A modified glycol containing a tetramethylene glycol unit and a propylene glycol unit is suitable as the polyether derivative represented by formula (2). Commercially available products can be used as such polyether derivatives, for example, manufactured by NOF Corporation, Polyserine DCB-1000 (weight average molecular weight: 1000), Polyserine DCB-2000 (weight average molecular weight: 2000), Polyserine DCB -4000 (weight average molecular weight 4000) or the like can be used.
The weight average molecular weight of the polyether derivative represented by formula (2) is preferably 500-8000, more preferably 1000-4000.

Formula (3):
HO-( _{CH2CH2CH2CH2O} ) _{m ( CH2CH2CH ( CH3} ) _CH2O ) _nH
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.)

A modified glycol containing a tetramethylene glycol unit and a 2-methyltetramethylene glycol unit is preferred as the polyether derivative represented by formula (3). Commercially available products can be used as such polyether derivatives, for example, PTG-L1000 (weight average molecular weight: 1000), PTG-L2000 (weight average molecular weight: 2000) manufactured by Hodogaya Chemical Co., Ltd., or PTG -L3000 (weight average molecular weight 3000) or the like can be used.
The weight average molecular weight of the polyether derivative represented by formula (3) is preferably 500-8000, more preferably 1000-4000.

Formula (4):
HO—(CH ₂ CH ₂ O)m(CH(CH ₃ )CH ₂ O)n—H
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.)

A modified glycol containing an ethylene glycol unit and a propylene glycol unit is preferable as the polyether derivative represented by formula (4). Commercially available products can be used as such polyether derivatives, for example, manufactured by NOF Corporation, Unilube 50DE-25 (weight average molecular weight: 1750), Unilube 75DE-25 (weight average molecular weight: 1400), Unilube 75DE. -60 (weight average molecular weight 3000) and the like can be used.
The weight average molecular weight of the polyether derivative represented by formula (4) is preferably 500-8000, more preferably 1000-4000.

Formula (5):
RO-( _{CH2CH2CH2CH2O} )m ₍ CH _{( CH3} ) _CH2O ) _nH
(Wherein, R represents an alkyl group having 1 to 30 carbon atoms, m and n each independently represents 3 to 60, and m+n represents 8 to 90.)

As the polyether derivative represented by formula (5), a modified glycol having one terminal butyl group or one terminal stearyl group containing a tetramethylene glycol unit and a propylene glycol unit is suitable. Commercially available products can be used as such polyether derivatives, for example, manufactured by NOF Corporation, polycerin BC-1000 (one end butyl group, weight average molecular weight 1000), polycerin SC-1000 (one end stearyl group, weight average molecular weight 1000) and the like can be used.
The weight average molecular weight of the polyether derivative represented by formula (5) is preferably 500-8000, more preferably 1000-4000.

Formula (6):
RO—(CH ₂ CH ₂ O)m(CH(CH ₃ )CH ₂ O)n—H
(Wherein, R represents an alkyl group having 1 to 30 carbon atoms, m and n each independently represents 3 to 60, and m+n represents 8 to 90.)

As the polyether derivative represented by the formula (6), a modified glycol having one terminal butyl group or one terminal stearyl group containing an ethylene glycol unit and a propylene glycol unit is suitable. Commercially available products can be used as such polyether derivatives, for example, manufactured by NOF Corporation, Unilube 50MB-11 (one end butyl group, weight average molecular weight 1000), Unilube 50MB-26 (one end butyl group, weight average molecular weight 2000), Unilube 50MB-72 (one end butyl group, weight average molecular weight 3000), Unilube 10MS-250KB (one end stearyl group, weight average molecular weight 2000), etc. can be used.
The weight average molecular weight of the polyether derivative represented by formula (6) is preferably 500-8000, more preferably 1000-4000.

Formula (7):
HO- _{( CH2CH2CH2CH2O} ) _{m ( CH2CH2O} ) _nH
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.)

A modified glycol containing a tetramethylene glycol unit and an ethylene glycol unit is preferable as the polyether derivative represented by formula (7). As such a polyether derivative, a commercially available product can be used, for example, polycerine DC3000E (weight average molecular weight: 3000), polycerine DC1800E (weight average molecular weight: 1800) manufactured by NOF Corporation can be used.
The weight average molecular weight of the polyether derivative represented by formula (7) is preferably 500-8000, more preferably 1000-4000.

Formula (8):
HO—(CH ₂ CH ₂ CH ₂ CH ₂ O) pH
(In the formula, p represents 6 to 100.)

Polytetramethylene glycol is preferred as the polyether derivative represented by Formula (8). Commercially available products can be used as such polyether derivatives. 1000SN (weight average molecular weight 1000), PTG-1400SN (weight average molecular weight 1400), PTG-2000SN (weight average molecular weight 2000), PTG-3000SN (weight average molecular weight 3000), or the like can be used.
The weight average molecular weight of the polyether derivative (polytetramethylene glycol) represented by formula (8) is preferably 500-8000, more preferably 1000-4000.

Formula (9):
Formula: HO-(CH( _CH3 ) _CH2O )qH
(In the formula, q represents 7 to 120.)

Polypropylene glycol is preferred as the polyether derivative represented by formula (9). Commercially available products can be used as such polyether derivatives, for example, Dow Chemical Polyglycol P2000P (weight average molecular weight 2000), NOF Corporation Uniol D-1000 (weight average molecular weight 1000), Uniol D-2000 (weight average molecular weight 2000), Uniol D-4000 (weight average molecular weight 4000), etc. can be used.
The weight average molecular weight of the polyether derivative (polypropylene glycol) represented by formula (9) is preferably 500-8000, more preferably 1000-4000.

Formula (10):
HO-(CH( _C2H5 ) _CH2O )r _- H
(Wherein, r represents 6 to 100.)

Polybutylene glycol is preferred as the polyether derivative represented by formula (10). Commercially available products can be used as such polyether derivatives. -2000 (weight average molecular weight 2000) or the like can be used.
The weight average molecular weight of the polyether derivative (polybutylene glycol) represented by formula (10) is preferably 500-8000, more preferably 1000-4000.

The polyether derivative represented by the general formula (1) generally has high heat resistance, and a molded article obtained by molding the aromatic polycarbonate resin composition containing the polyether derivative at a high temperature has high brightness and light transmittance.

In addition, each of the polyether derivatives represented by the above formulas (1) to (10) is represented by each formula as long as the aromatic polycarbonate resin composition and the optical molded article targeted by the present invention can be obtained. Repeating units other than repeating units can be included. Examples of such repeating units include repeating units based on impurities that may be contained in the starting material of the polyether derivative, repeating units based on the initiator (polymerization initiator) used during polymerization, and the like. can. Such repeating units may be, for example, 5% or less, 4% or less, 3% or less, based on the total repeating units contained in the polyether derivative.

When a polymerization initiator is used, examples of polymerization initiators include the following compounds. Examples include hydrogenated bisphenol A, bisphenol A, isosorbide, glycerin, pentaerythritol, sorbitol, glucose and the like.

（式中、ｍ１＋ｍ２が、式（２）のｍに対応し、ｎ１＋ｎ２が、式（２）のｎに対応する。）
式（２－２）で表されるポリエーテル誘導体の重量平均分子量は、５００～８０００であることが好ましく、１０００～４０００であることがより好ましい。 As a polyether derivative containing a repeating unit based on such a polymerization initiator, for example, Polycerin 60-2000H (manufactured by NOF Corporation), which may correspond to the above formula (2), can be exemplified (formula 2- 2).

(In the formula, m1+m2 corresponds to m in formula (2), and n1+n2 corresponds to n in formula (2).)
The weight average molecular weight of the polyether derivative represented by formula (2-2) is preferably 500-8000, more preferably 1000-4000.

In addition, since the polyether derivative (B) used in the present invention has moderate lipophilicity, it is also excellent in compatibility with the aromatic polycarbonate resin (A), so the polyether derivative (B) is used. The transparency of the molded article obtained from the blended aromatic polycarbonate resin composition can be maintained without deteriorating the transparency. The weight average molecular weight of such a polyether derivative (B) is preferably 500-8000, more preferably 1000-4000.

The HLB value of the skeleton portion of the polyether derivative (B) is −12 or more and 15 or less as determined by the Davis method. When the HLB value is -12 or more and 15 or less, the yellowness is not increased, which is preferable. The HLB value is more preferably −8 or more and 13 or less, and particularly preferably −6 or more and 11 or less.

In the Davis method, the HLB value of a compound is calculated according to the following formula using the radix determined by each functional group. Table 1 exemplifies the number of bases of each functional group. In this specification, the HLB value of the polyether derivative (B) was calculated according to the following formula using the base numbers shown in Table 1. The HLB of a mixture is the weighted average of the HLB values of each component in the mixture.
(Formula) HLB value = 7 + (total number of hydrophilic groups) + (total number of lipophilic groups)

Furthermore, the CPR (unit: dimensionless) (Controlled Polymerization Rate) of the polyether derivative (B) used in the present invention: an index indicating the amount of basic substances in the polyether derivative: in accordance with JIS K1557-4 measured) is preferably 3.5 or less, more preferably 2.0 or less, and particularly preferably 1.0 or less. When the CPR is 3.5 or less, the polyether derivative (B) has excellent compatibility with the polycarbonate resin, suppresses decomposition and deterioration, has excellent storage stability, and the hue of the resulting polycarbonate resin composition. less likely to adversely affect When it is 2.0 or less, the polyether derivative (B) is more excellent in compatibility with the polycarbonate resin, more suppressed in decomposition and deterioration, more excellent in storage stability, and the hue of the obtained polycarbonate resin composition is improved. less likely to have adverse effects. For example, the CPR of polycerine DCB-2000, which corresponds to the polyether derivative (B) represented by the above formula (2), is less than 1.0, and the polyether derivative (B) represented by the above formula (2) Polycerine 60-2000H (manufactured by NOF Corporation) corresponding to B) has a CPR of less than 1.0 (about 0.6) and corresponds to the polyether derivative (B) represented by formula (4). Unilube 50DE-25 (manufactured by NOF Corporation) has a CPR of 3.0, and PTG-1000SN (Hodogaya Chemical Industry Co., Ltd.) corresponds to the polyether derivative (B) represented by the above formula (8). ) company) has a CPR of less than 1.0.

Furthermore, the pH of the polyether derivative (B) used in the present invention (measured according to JIS K1557-5) is preferably 5.0 or more and less than 7.5. It is more preferably 0 or more and less than 7.0. When the pH of the polyether derivative (B) is 5.0 or more and less than 7.5, decomposition and deterioration are suppressed, the storage stability is excellent, and the hue of the resulting polycarbonate resin composition is less likely to be adversely affected. . For example, the pH of polyserine DCB-2000, which corresponds to the polyether derivative (B) represented by the above formula (2), is 6.7, and the polyether derivative (B) represented by the above formula (2) ) corresponding to polycerine 60-2000H (manufactured by NOF Corporation) has a pH of 6.8, and Unilube 50DE-25 (NOF ( Co., Ltd.) has a pH of 6.0, and PTG-1000SN (manufactured by Hodogaya Chemical Industry Co., Ltd.), which corresponds to the polyether derivative (B) represented by the above formula (8), has a pH of 6. .7.

Furthermore, the temperature at which the weight of the polyether derivative (B) used in the present invention becomes 90% (or the temperature at which the weight reduction rate becomes 10%) (measured by thermogravimetry in accordance with JIS K7120) is It is preferably 300° C. or higher, more preferably 330° C. or higher. When the temperature at which the polyether derivative (B) reaches 90% weight is 300° C. or higher, decomposition and deterioration are suppressed, the storage stability is excellent, and the hue of the resulting polycarbonate resin composition is less likely to be adversely affected. For example, the temperature at which polyserine DCB-2000 corresponding to the polyether derivative (B) represented by the above formula (2) reaches 90% weight is 330° C., and the polyether derivative represented by the above formula (2) The temperature at which polycerine 60-2000H (manufactured by NOF Corporation) corresponding to the ether derivative (B) becomes 90% by weight is 400°C.

The amount of the polyether derivative is 0.1 to 3.0 parts by weight, preferably 0.3 to 1.8 parts by weight, per 100 parts by weight of the aromatic polycarbonate resin (A). When the amount of the polyether derivative is 0.1 parts by weight or more and 3.0 parts by weight or less, the light transmittance and hue can be further improved.

An aromatic polycarbonate resin composition according to an embodiment of the present invention contains an aromatic compound (C) of the following formula as an essential component together with a polyether derivative (B). Thus, by using the polyether derivative (B) and the aromatic compound (C) in combination, the aromatic polycarbonate resin composition is obtained while maintaining the excellent optical properties required for the optical molded article. It is possible to prevent deterioration such as deterioration due to usage conditions of the molded product and deterioration due to aging.

For example, it effectively prevents thermal degradation (white turbidity or coloration) caused by long-term light irradiation of an optical molded article molded from an aromatic polycarbonate resin composition. Under severe conditions such as under the scorching sun and/or when exposed to light irradiation for a long period of time, the surface temperature of optical molded articles may rise. Thermal deterioration of the resin (A) may progress little by little. Furthermore, the polyether derivative (B) in the resin composition may be modified, impairing the transparency (brightness or light transmittance) expected for the aromatic polycarbonate resin composition used in ordinary optical molded articles, and molding White turbidity or coloring (pale to deep coloring) may occur on the product surface.

In view of this problem, the inventors of the present application conducted intensive studies and found that the specific aromatic compound (C) of the following formula is particularly effective as a compound for suppressing deterioration such as modification of the polyether derivative (B). The polyether derivative (B ) can be inhibited to reduce or alleviate the cloudiness or coloring (pale to deep coloring) phenomenon, and the present invention was completed.
formula:

The amount of the aromatic compound (C) used in the embodiment of the present invention is 0.0001 or more and less than 0.1 parts by weight with respect to 100 parts by weight of the aromatic polycarbonate resin (A), and 0.0005 parts by weight Part or more and less than 0.05 weight part are preferable, and 0.0005 weight part or more and 0.003 weight part or less are more preferable. When the amount of the aromatic compound (C) is 0.0001 parts by weight or more and less than 0.1 parts by weight, the effect of suppressing white turbidity or coloration is more preferable, and the high level of light transmittance and hue required for optical molded products can be obtained. more achievable.

The aromatic polycarbonate resin composition of the embodiment of the present invention can further contain a phosphorus antioxidant (D). Thus, when the aromatic polycarbonate resin composition contains the polyether derivative (B), the specific aromatic compound (C) and the phosphorus antioxidant (D) at the same time, excellent optical While maintaining and improving the properties, the initial optical properties of the resulting molded article made of the aromatic polycarbonate resin composition are not degraded, and in addition, it is possible to prevent deterioration such as deterioration due to usage conditions and aging deterioration. .

The phosphorus-based antioxidant is not particularly limited as long as the aromatic polycarbonate resin composition aimed at by the present invention can be obtained, but it preferably contains a phosphite ester compound having the following phosphite ester structure. .

In the aromatic polycarbonate resin composition of the embodiment of the present invention, the phosphorus antioxidant (D) is a phosphite ester compound represented by the following formula (11), It preferably contains at least one compound selected from a phosphate ester compound, a phosphite ester compound represented by the following formula (13), and a phosphite ester compound represented by the following formula (14).

The phosphorus antioxidant (D) preferably contains, for example, a compound represented by the following formula (11).

（式中、Ｒ^１は、炭素数１～２０のアルキル基を示し、ａは、０～３の整数を示す） Formula (11):

(Wherein, R ¹ represents an alkyl group having 1 to 20 carbon atoms, and a represents an integer of 0 to 3)

In the above formula (11), R ¹ is an alkyl group having 1 to 20 carbon atoms, preferably an alkyl group having 1 to 10 carbon atoms.

Examples of the compound represented by formula (11) include triphenylphosphite, tricresylphosphite, tris(2,4-di-t-butylphenyl)phosphite, trisnonylphenylphosphite and the like. . Among these, tris(2,4-di-t-butylphenyl) phosphite is particularly suitable, and for example, commercially available as Irgafos 168 ("Irgafos" is a registered trademark of BASF Societas Europe) manufactured by BASF. available at

The phosphorus antioxidant (D) preferably contains, for example, a compound represented by the following formula (12).

（式中、Ｒ^２、Ｒ^３、Ｒ^５及びＲ^６は、それぞれ独立して、水素原子、炭素数１～８のアルキル基、炭素数５～８のシクロアルキル基、炭素数６～１２のアルキルシクロアルキル基、炭素数７～１２のアラルキル基又はフェニル基を示す。Ｒ^４は、水素原子又は炭素数１～８のアルキル基を示す。Ｘは、単結合、硫黄原子又は式：－ＣＨＲ^７－（ここで、Ｒ^７は、水素原子、炭素数１～８のアルキル基又は炭素数５～８のシクロアルキル基を示す）で表される基を示す。Ａは、炭素数１～８のアルキレン基又は式：＊－ＣＯＲ^８－（ここで、Ｒ^８は、単結合又は炭素数１～８のアルキレン基を示し、＊は、酸素側の結合手であることを示す）で表される基を示す。Ｙ及びＺは、いずれか一方がヒドロキシル基、炭素数１～８のアルコキシ基又は炭素数７～１２のアラルキルオキシ基を示し、もう一方が水素原子又は炭素数１～８のアルキル基を示す。） Formula (12):

(wherein R ² , R ³ , R ⁵ and R ⁶ are each independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, a represents an alkylcycloalkyl group, an aralkyl group having 7 to 12 carbon atoms or a phenyl group, R ⁴ represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, X represents a single bond, a sulfur atom or the formula: -CHR ^7- (here, R ⁷ represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms or a cycloalkyl group having 5 to 8 carbon atoms), A represents a group represented by 1 to 8 carbon atoms; or the formula: *-COR ⁸ — (here, R ⁸ represents a single bond or an alkylene group having 1 to 8 carbon atoms, and * represents a bond on the oxygen side) One of Y and Z represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or a indicates an alkyl group.)

In formula (12), R ² , R ³ , R ⁵ and R ⁶ each independently represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, or a cycloalkyl group having 5 to 8 carbon atoms. 12 alkylcycloalkyl groups, aralkyl groups having 7 to 12 carbon atoms or phenyl groups.

Examples of the alkyl group having 1 to 8 carbon atoms include methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group, sec-butyl group and t-butyl group. group, t-pentyl group, i-octyl group, t-octyl group, 2-ethylhexyl group and the like. Examples of the cycloalkyl group having 5 to 8 carbon atoms include cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group and the like. Examples of alkylcycloalkyl groups having 6 to 12 carbon atoms include 1-methylcyclopentyl group, 1-methylcyclohexyl group, 1-methyl-4-i-propylcyclohexyl group and the like. Examples of the aralkyl group having 7 to 12 carbon atoms include benzyl group, α-methylbenzyl group, α,α-dimethylbenzyl group and the like.

Preferably, R ² , R ³ and R ⁵ are each independently an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms or an alkylcycloalkyl group having 6 to 12 carbon atoms. . In particular, R ² and R ⁵ are each independently preferably a t-alkyl group such as t-butyl group, t-pentyl group, t-octyl group, cyclohexyl group or 1-methylcyclohexyl group. In particular, R ³ has a carbon number such as a methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group, sec-butyl group, t-butyl group, t-pentyl group, etc. An alkyl group of 1 to 5 is preferred, and a methyl group, t-butyl group or t-pentyl group is more preferred.

R ⁶ is preferably a hydrogen atom, an alkyl group having 1 to 8 carbon atoms or a cycloalkyl group having 5 to 8 carbon atoms, and is a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, an i-propyl group. , n-butyl, i-butyl, sec-butyl, t-butyl, t-pentyl and other alkyl groups having 1 to 5 carbon atoms are more preferred.

In formula (12), R ⁴ represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. The alkyl group having 1 to 8 carbon atoms includes, for example, the alkyl groups exemplified above for R ² , R ³ , R ⁵ and R ⁶ . In particular, R ⁴ is preferably a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, more preferably a hydrogen atom or a methyl group.

In formula (12), X represents a single bond, a sulfur atom or a group represented by the formula: —CHR ⁷ —. Here, R ⁷ in the formula: —CHR ⁷ — represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a cycloalkyl group having 5 to 8 carbon atoms. Examples of the alkyl group having 1 to 8 carbon atoms and the cycloalkyl group having 5 to 8 carbon atoms include the alkyl groups and cycloalkyl groups exemplified in the explanation of R ² , R ³ , R ⁵ and R ⁶ above, respectively. be done. In particular, X is a single bond, a methylene group, or a methylene group substituted with a methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group, t-butyl group, or the like. is preferred, and a single bond is more preferred.

In formula (12), A represents an alkylene group having 1 to 8 carbon atoms or a group represented by the formula: *-COR ⁸ -. Examples of the alkylene group having 1 to 8 carbon atoms include methylene group, ethylene group, propylene group, butylene group, pentamethylene group, hexamethylene group, octamethylene group, 2,2-dimethyl-1,3-propylene group and the like. and preferably a propylene group. R ⁸ in the formula: *-COR ⁸ - represents a single bond or an alkylene group having 1 to 8 carbon atoms. Examples of the alkylene group having 1 to 8 carbon atoms representing R ⁸ include the alkylene groups exemplified in the explanation of A above. R ⁸ is preferably a single bond or an ethylene group. In addition, * in the formula: *-COR ⁸ - is a bond on the oxygen side and indicates that the carbonyl group is bonded to the oxygen atom of the phosphite group.

In formula (12), one of Y and Z represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or 1 to 8 carbon atoms. represents an alkyl group of The alkoxy group having 1 to 8 carbon atoms includes, for example, methoxy group, ethoxy group, propoxy group, t-butoxy group, pentyloxy group and the like. The aralkyloxy group having 7 to 12 carbon atoms includes, for example, benzyloxy group, α-methylbenzyloxy group, α,α-dimethylbenzyloxy group and the like. The alkyl group having 1 to 8 carbon atoms includes, for example, the alkyl groups exemplified above for R ² , R ³ , R ⁵ and R ⁶ .

Examples of the compound represented by formula (12) include 2,4,8,10-tetra-t-butyl-6-[3-(3-methyl-4-hydroxy-5-t-butylphenyl)propoxy ] dibenzo[d,f][1,3,2]dioxaphosphepin, 6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propoxy]-2,4,8, 10-tetra-t-butyldibenzo[d,f][1,3,2]dioxaphosphepin, 6-[3-(3,5-di-t-butyl-4-hydroxyphenyl)propoxy]- 4,8-di-t-butyl-2,10-dimethyl-12H-dibenzo[d,g][1,3,2]dioxaphosphosine, 6-[3-(3,5-di-t- Butyl-4-hydroxyphenyl)propionyloxy]-4,8-di-t-butyl-2,10-dimethyl-12H-dibenzo[d,g][1,3,2]dioxaphosphosine and the like . Among these, when the obtained aromatic polycarbonate resin composition is used in fields where optical properties are particularly required, 2,4,8,10-tetra-t-butyl-6-[3-(3-methyl -4-Hydroxy-5-t-butylphenyl)propoxy]dibenzo[d,f][1,3,2]dioxaphosphepin is suitable, for example, Sumitomo Chemical Co., Ltd. Sumilizer GP (" Sumilizer" is commercially available as a registered trademark).

The phosphorus antioxidant (D) preferably contains, for example, a compound represented by the following formula (13).

（式中、Ｒ^９及びＲ^１０は、それぞれ独立して、炭素数１～２０のアルキル基又はアルキル基で置換されていてもよいアリール基を示し、ｂ及びｃは、それぞれ独立して、０～３の整数を示す。） Formula (13):

(wherein R ⁹ and R ¹⁰ each independently represent an alkyl group having 1 to 20 carbon atoms or an aryl group optionally substituted with an alkyl group; b and c each independently represent 0 Indicates an integer of ~3.)

Examples of the compound represented by formula (13) include bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, phenylbisphenol A pentaerythritol diphosphite, and the like. Bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite is commercially available from ADEKA under the trade name of "ADEKA STAB PEP-24G". Adekastab PEP-36 ("Adekastab" is a registered trademark) manufactured by ADEKA Corporation is commercially available.

The phosphorus antioxidant (D) preferably contains, for example, a compound represented by the following formula (14).

Formula (14):

(wherein R ¹¹ to R ¹⁸ each independently represent an alkyl or alkenyl group having 1 to 3 carbon atoms, R ¹¹ and R ¹² , R ¹³ and R ¹⁴ , R ¹⁵ and R ¹⁶ , R ¹⁷ and R ¹⁸ may combine with each other to form a ring, R ¹⁹ to R ²² each independently represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, d to g each independently is an integer of 0 to 5. X ¹ to X ⁴ each independently represent a single bond or a carbon atom, and when X ¹ to X ⁴ are single bonds, among R ¹¹ to R ²² , The functional group connected to the single bond is excluded from the general formula (14))

Specific examples of the compound represented by formula (14) include bis(2,4-dicumylphenyl)pentaerythritol diphosphite. This is manufactured by Dover Chemical, trade name "Doverphos (registered trademark) S-9228", manufactured by ADEKA, trade name "ADEKASTAB PEP-45" (bis(2,4-dicumylphenyl) pentaerythritol diphosphite). are commercially available as

The aromatic polycarbonate resin composition described above, which satisfies at least one selected from the following, is preferred:
The phosphite ester compound represented by the formula (11) contains tris(2,4-di-t-butylphenyl)phosphite;
The phosphite ester compound represented by the formula (12) is 2,4,8,10-tetra-t-butyl-6-[3-(3-methyl-4-hydroxy-5-t-butylphenyl ) propoxy]dibenzo[d,f][1,3,2]dioxaphosphepin;
The phosphite ester compound represented by the formula (13) is 3,9-bis(2,6-di-tert-butyl-4-methylphenoxy)-2,4,8,10-tetraoxa-3, containing 9-diphosphaspiro[5,5]undecane; and containing bis(2,4-dicumylphenyl)pentaerythritol diphosphite as the phosphite ester compound represented by the formula (14).

The amount of the phosphorus antioxidant (D) is preferably up to 0.5 parts by weight, more preferably 0.02 to 0.2 parts by weight, per 100 parts by weight of the aromatic polycarbonate resin (A).

In addition to the above components, the aromatic polycarbonate resin composition according to the embodiment may contain, for example, an ultraviolet absorber, which is a component that further improves the weather resistance of the obtained aromatic polycarbonate resin composition, added to the aromatic polycarbonate resin. It can be used as appropriate depending on the application of the molded article obtained by molding the composition.

As the ultraviolet absorber, for example, a benzotriazole-based compound, a triazine-based compound, a benzophenone-based compound, an oxalic acid anilide-based compound, and the like, which are usually blended in a polycarbonate resin, can be used alone or in combination of two or more. can be used.

Examples of benzotriazole compounds include 2-(2-hydroxy-5-t-octylphenyl)benzotriazole, 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chloro-2H- benzotriazole, 2-(3,5-di-tert-pentyl-2-hydroxyphenyl)-2H-benzotriazole, 2-(2H-benzotriazole-2-yl)-4-methyl-6-(3,4,5,6 -tetrahydrophthalimidylmethyl)phenol, 2-(2-hydroxy-4-octyloxyphenyl)-2H-benzotriazole, 2-(2-hydroxy-5-tert-octylphenyl)-2H-benzotriazole, 2-[2'-hydroxy-3 -di(1,1-dimethylbenzyl)phenyl]-2H-benzotriazole, 2,2'-methylenbis[6-(2H-benzotriazol-2-yl)4-(1,1,3,3-tetramethylbutyl)phenol], etc. is mentioned. Among them, 2-(2-hydroxy-5-t-octylphenyl)benzotriazole and the like are particularly preferable, and examples thereof include TINUVIN 329 (TINUVIN is a registered trademark) manufactured by BASF, Seesorb manufactured by Shipro Kasei Co., Ltd. 709, Chemisorb 79 manufactured by Chemipro Kasei Co., Ltd., etc. are commercially available.

Examples of triazine compounds include 2,4-diphenyl-6-(2-hydroxyphenyl-4-hexyloxyphenyl)1,3,5-triazine, 2-[4,6-bis(2,4-dimethyl Phenyl)-1,3,5-triazin-2-yl]-5-(octyloxy)phenol, 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-[( hexyl)oxy]phenol and the like, for example, TINUVIN 1577 manufactured by BASF is commercially available.

As the oxalic acid anilide compound, for example, Sanduvor VSU manufactured by Clariant Japan Co., Ltd. is commercially available.

Benzophenone compounds include, for example, 2,4-dihydroxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, and the like.

The amount of the ultraviolet absorber is 0 to 1.0 parts by weight, preferably 0 to 0.5 parts by weight, per 100 parts by weight of the aromatic polycarbonate resin (A). If the amount of the ultraviolet absorber exceeds 1.0 parts by weight, the initial hue of the aromatic polycarbonate resin composition to be obtained may deteriorate. In addition, when the amount of the ultraviolet absorber is 0.1 parts by weight or more, the effect of further improving the weather resistance of the aromatic polycarbonate resin composition is greatly exhibited.

The aromatic polycarbonate resin composition of the embodiment of the invention can contain an epoxy compound (E). Thus, when the aromatic polycarbonate resin composition simultaneously contains the polyether derivative (B), the specific aromatic compound (C) and the epoxy compound (E), the excellent optical properties required for the optical molded product are maintained. While improving the initial optical properties of the resulting molded article made of the aromatic polycarbonate resin composition, it is possible to prevent deterioration such as deterioration due to usage conditions and aging deterioration.

The epoxy compound (E) has at least one epoxy group in the molecule and is not particularly limited as long as the aromatic polycarbonate resin composition aimed at by the present invention can be obtained. The epoxy compound (E) is, for example, 3′,4′-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate, epoxidized soybean oil, ε-caprolactone-modified 3′,4′-epoxycyclohexylmethyl 3,4- Epoxycyclohexane carboxylate, epoxy group-containing acrylic/styrene polymer, 2,2-bis(4-hydroxycyclohexyl)propane-diglycidyl ether, and the like can be included. The epoxy compound (E) preferably contains 3',4'-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate.

The aromatic polycarbonate resin composition of the embodiment of the present invention preferably contains 0.001 to 0.2 parts by mass of the epoxy compound (E) with respect to 100 parts by mass of the aromatic polycarbonate resin (A). It is more preferable to contain 0.002 to 0.1 parts by mass, and it is particularly preferable to contain 0.005 to 0.05 parts by mass.
When the aromatic polycarbonate resin composition of the embodiment of the present invention contains 0.001 to 0.2 parts by mass of the epoxy compound (E) with respect to 100 parts by mass of the aromatic polycarbonate resin (A), an optical molded article While maintaining and improving the excellent optical properties required for , it improves the initial optical properties (integrated transmittance and yellowness) of the molded product made of the obtained aromatic polycarbonate resin composition, and deteriorates due to usage conditions and aging deterioration. It is possible to prevent deterioration such as

Furthermore, the aromatic polycarbonate resin composition according to the embodiment may contain, for example, heat stabilizers, other antioxidants, colorants, release agents, softeners, antistatic agents, as long as the effects of the present invention are not impaired. Various additives such as agents, impact modifiers, and polymers other than the aromatic polycarbonate resin (A) may be appropriately added.

The aromatic polycarbonate resin composition of the embodiment of the present invention is an aromatic polycarbonate resin (A), a polyether derivative (B) and a specific aromatic compound (C) mixed, if necessary, a phosphorus antioxidant (D), the epoxy compound (E), the various additives described above, and a polymer other than the aromatic polycarbonate resin (A) are mixed together. As long as the aromatic polycarbonate resin composition aimed at by the present invention can be obtained, the production method is not particularly limited, and the kind and amount of each component can be adjusted as appropriate. The method of mixing the components is also not particularly limited, and examples thereof include a method of mixing with a known mixer such as a tumbler and a ribbon blender, and a method of melt-kneading with an extruder. Pellets of the aromatic polycarbonate resin composition can be easily obtained by these methods. The specific aromatic compound (C) may be mixed before melt-kneading, or may be added or mixed in advance with the polyether derivative (B).

The shape and size of the pellets of the aromatic polycarbonate resin composition obtained as described above are not particularly limited as long as they have the shape and size of ordinary resin pellets. For example, the shape of the pellet may be an elliptical columnar shape, a columnar shape, or the like. As for the size of the pellet, it is preferable that the length is about 2 to 8 mm, and in the case of an elliptical cylinder, it is preferable that the long axis of the cross-sectional ellipse is about 2 to 8 mm and the short axis is about 1 to 4 mm. In the case of a cylindrical shape, it is preferable that the diameter of the cross-sectional circle is about 1 to 6 mm. In addition, each pellet obtained may have such a size, and all the pellets forming the pellet aggregate may have such a size, and the average value of the pellet aggregate is this. , and there is no particular limitation.

An optical molded article according to an embodiment of the present invention can be obtained by molding the above aromatic polycarbonate resin composition.

The method for producing the optical molded article is not particularly limited as long as the optical molded article aimed at by the present invention can be obtained. and a method of molding.

The molded article for optics according to the present invention is suitable as, for example, a light guide plate, a surface light emitter material, a light guide film, a vehicle light guide, a nameplate, and the like.

As described above, the embodiments have been described as examples of the present invention. However, the technique of the present invention is not limited to this, and can also be applied to embodiments in which changes, replacements, additions, omissions, etc. are made as appropriate.

EXAMPLES The present invention will be specifically described below with reference to Examples, but the present invention is not limited to these Examples. "Parts" and "%" are based on weight unless otherwise specified.

The following materials were used as raw materials.
1. Aromatic polycarbonate resin (A):
Polycarbonate resin synthesized from bisphenol A and carbonyl chloride Viscosity average molecular weight: 15000, SD Polyca 200-80 (trade name) manufactured by Sumika Polycarbonate Co., Ltd. "SD Polyca" is a registered trademark of Sumika Polycarbonate Co., Ltd. , hereinafter also referred to as "PC" or (A1)

2. Polyether derivative (B):
2-1. Modified glycol consisting of tetramethylene glycol units and propylene glycol units (random copolymerization)
Weight average molecular weight: 2000, pH: 6.7 (JIS K1557-5), Polycerine DCB-2000 (trade name) manufactured by NOF Corporation, HLB value of skeleton portion: -5.6, below (B1) say

2-2. Modified glycol consisting of tetramethylene glycol units and propylene glycol units (random copolymerization)
Weight average molecular weight: 1000, pH: 6.8 (JIS K1557-5), Polycerine DCB-1000 (trade name) manufactured by NOF Corporation, HLB value of skeleton portion: 1.6, hereinafter also referred to as (B2)

2-3. Modified glycol consisting of tetramethylene glycol units and ethylene glycol units (random copolymerization)
Weight average molecular weight: 3000, Polycerin DC-3000E (trade name) manufactured by NOF Corporation, HLB value of skeleton portion: 0.0, hereinafter also referred to as (B3)

2-4. Modified glycol consisting of tetramethylene glycol unit and propylene glycol unit with one butyl group (random copolymerization)
Weight average molecular weight: 1000, Polycerine BC-1000 (trade name) manufactured by NOF Corporation, HLB value of skeleton portion: 1.6, hereinafter also referred to as (B4)

2-5. Modified glycol consisting of ethylene glycol units and propylene glycol units (random copolymerization)
Weight average molecular weight: 1750, Unilube 50DE-25 (trade name) manufactured by NOF Corporation, HLB value of skeleton portion: 10.1, hereinafter also referred to as (B5)

2-6. Modified glycol (random copolymerization) consisting of ethylene glycol unit and propylene glycol unit with one terminal butyl group
Weight average molecular weight: 2000, Unilube 50MB-26 (trade name) manufactured by NOF Corporation, HLB value of skeleton portion: 10.1, hereinafter also referred to as (B6)

2-7. Polypropylene glycol Weight average molecular weight: 2000, Polyglycol P2000P (trade name) manufactured by Dow Chemical, HLB value of skeleton portion: 1.9, hereinafter also referred to as (B7)

2-8. Polytetramethylene glycol Weight average molecular weight: 1000, PTG-1000SN (trade name) manufactured by Hodogaya Chemical Industry Co., Ltd., HLB value of skeleton portion: -1.4, hereinafter also referred to as (B8)

2-9. Modified glycol consisting of tetramethylene glycol units and 2-methyltetramethylene glycol units (random copolymerization)
Weight average molecular weight: 2000, PTG-L2000 (trade name) manufactured by Hodogaya Chemical Co., Ltd., HLB value of skeleton portion: -11.6, hereinafter also referred to as (B9)

2-10. Modified glycol consisting of ethylene glycol units and propylene glycol units (random copolymerization)
Weight average molecular weight: 1400, Unilube 75DE-25 (trade name) manufactured by NOF Corporation, HLB value of skeleton portion: 13.7, hereinafter also referred to as (B10)

2-11. Modified glycol consisting of ethylene glycol units and propylene glycol units (random copolymerization)
Weight average molecular weight: 3000, Unilube 75DE-60 (trade name) manufactured by NOF Corporation, HLB value of skeleton portion: 20.4, hereinafter also referred to as (B11)

2-12. Polytetramethylene glycol Weight average molecular weight: 2000, PTG-2000SN (trade name) manufactured by Hodogaya Chemical Industry Co., Ltd., HLB value of skeleton portion: -9.8, hereinafter also referred to as (B12)

2-13. Polytetramethylene glycol weight average molecular weight: 3000, PTG-3000SN (trade name) manufactured by Hodogaya Chemical Industry Co., Ltd., HLB value of skeleton portion: -17.6, hereinafter also referred to as (B13)

3. Aromatic compound (C):
3,5-di-t-butyl-4-hydroxytoluene [manufactured by Wako Pure Chemical Industries, Ltd., hereinafter also referred to as (C1)]

［ＢＡＳＦ社製のイルガフォス１６８（商品名）、以下（Ｄ１）ともいう］ 4. Phosphorus antioxidant (D):
4-1. Tris (2,4-di-t-butylphenyl) phosphite represented by the following formula

[Irgafos 168 (trade name) manufactured by BASF, hereinafter also referred to as (D1)]

［住友化学（株）製のスミライザーＧＰ（商品名）、以下（Ｄ２）ともいう］ 4-2. 2,4,8,10-tetra-t-butyl-6-[3-(3-methyl-4-hydroxy-5-t-butylphenyl)propoxy]dibenzo[d,f, represented by the following formula ][1,3,2]dioxaphosphepin

[Sumilizer GP (trade name) manufactured by Sumitomo Chemical Co., Ltd., hereinafter also referred to as (D2)]

［Ｄｏｖｅｒ Ｃｈｅｍｉｃａｌ社製のＤｏｖｅｒｐｈｏｓ Ｓ－９２２８（商品名）、以下（Ｄ３）ともいう］ 4-3. Bis(2,4-dicumylphenyl) pentaerythritol diphosphite (IUPAC name: 3,9-bis[2,4-bis(α,α-dimethylbenzyl)phenoxy]-2 represented by the following formula ,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane)

[Doverphos S-9228 (trade name) manufactured by Dover Chemical, hereinafter also referred to as (D3)]

［ＡＤＥＫＡ製のアデカスタブＰＥＰ－３６（商品名）、以下（Ｄ４）ともいう］ 4-4. Bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite (IUPAC name: 3,9-bis(2,6-di-tert-butyl- 4-methylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5,5]undecane)

[Adekastab PEP-36 (trade name) manufactured by ADEKA, hereinafter also referred to as (D4)]

5. Epoxy compound (E)
3′,4′-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate [Celoxide 2021P (trade name) manufactured by Daicel Chemical Industries, Ltd., hereinafter also referred to as (E1)]

(Examples 1 to 36 and Comparative Examples 1 to 4)
The above raw materials were put into a tumbler at once in the proportions shown in Tables 2 to 5, dry-mixed for 10 minutes, and then melted using a twin-screw extruder (manufactured by Japan Steel Works, Ltd., TEX30α). Melt-kneading was carried out at a temperature of 220° C. to obtain pellets of the aromatic polycarbonate resin compositions of Examples 1-36 and Comparative Examples 1-4.
However, for Example 7, the compound (C) and the compound (B) were mixed in advance and then mixed with other raw materials to obtain pellets of the aromatic polycarbonate resin composition of Example 7.
The pellets obtained in Examples and Comparative Examples are all substantially cylindric, and the aggregate of 100 pellets has an average length of about 5.1 mm to about 5.4 mm and an elliptical cross section. The average value of the major axis was about 4.1 mm to about 4.3 mm, and the average value of the minor axis was about 2.2 mm to about 2.3 mm.

Using the obtained pellets, test pieces for each evaluation were produced and subjected to evaluation according to the following method. The results are shown in Tables 2-5.

(Method for preparing test piece)
After drying the obtained pellets at 120 ° C. for 4 hours or more, using an injection molding machine (ROBOSHOT S2000i100A manufactured by Fanuc Co., Ltd.) at a molding temperature of 360 ° C. and a mold temperature of 80 ° C., JIS K 7139 "Plastic- A multi-purpose test piece A type (total length 168 mm x thickness 4 mm) specified in "Test piece" was prepared. The end face of this test piece was cut, and the cut end face was mirror-finished using a resin plate end face mirror finishing machine (manufactured by Megalo Technica Co., Ltd., Plabeauty PB-500).

(Evaluation method for integrated transmittance)
A spectrophotometer (UH4150, manufactured by Hitachi, Ltd.) was equipped with a long optical path measurement accessory, and a 50 W halogen lamp was used as the light source. Using 2.8 mm, the spectral transmittance of each test piece was measured in the entire length direction of the test piece at every 1 nm in the wavelength range of 380 to 780 nm. Each integrated transmittance was obtained by integrating the measured spectral transmittances and rounding off to the nearest ten. An integrated transmittance of 31,000 or more was considered good (indicated by ⊚ in the table), less than 31,000 and 25,000 or more was acceptable (indicated by ◯ in the table), and less than 25,000 was considered unsatisfactory (indicated by x in the table).

(Method for evaluating yellowness)
Based on the spectral transmittance measured in the integrated transmittance evaluation method, the yellowness index (hereinafter referred to as YI) of each sample was obtained in a 10-degree field of view using standard light source D65. YI is 15 or less as good (indicated by ◎ in the table), exceeds 15 and is usable as 30 or less (indicated by ○ in the table), and exceeds 30 as defective (indicated by × in the table) .

(Heat test evaluation of molded product)
The test pieces prepared above were placed in an inert oven IPHH-201M manufactured by Espec Co., Ltd., and subjected to a heating test at 200° C. for 72 hours.
Next, the surface of each test piece was visually observed. The condition after the heating test was evaluated according to the following criteria. The results are shown in Tables 2-5.
A: Colorless and transparent.
◯: Transparent and usable, but slightly colored.
x: Opaque or darkly colored.

Tables 2 to 5 also show raw materials, blending ratios, and evaluation results for each example and comparative example.

a)：(C1)を(B1)と混合後、他の原料と混合した。

a): After mixing (C1) with (B1), it was mixed with other raw materials.

b):白濁した。
c):試験をしなかった。

b): Clouded.
c): Not tested.

The aromatic polycarbonate resin compositions of Examples 1 to 36 contain an aromatic polycarbonate resin (A), a specific polyether derivative (B) and a specific aromatic compound (C), and optionally a phosphorus antioxidant. (D), etc., each in a specific proportion. Therefore, the test piece molded from the aromatic polycarbonate resin composition has a high integrated transmittance, a small yellowness, and almost no deterioration after the heating test.

A molded article obtained by molding such an aromatic polycarbonate resin composition has a small yellowness, an excellent hue, and hardly deteriorates after a heating test.

On the other hand, the aromatic polycarbonate resin compositions of Comparative Examples 1 and 2 had a large amount of polyether derivative, so the integrated transmittance was low and the yellowness was high. Thus, the molded article obtained by molding the aromatic polycarbonate resin composition of Comparative Example 1 is inferior in brightness and hue. Moreover, the results after the heating test were also inferior.

In addition, the aromatic polycarbonate resin compositions of Comparative Examples 3 and 4 have high yellowness because the HLB value of the skeleton portion of the polyether derivative is outside the range of the present invention. Thus, the molded articles obtained by molding the aromatic polycarbonate resin compositions of Comparative Examples 3 and 4 are inferior in luminance and hue. Moreover, the molded article obtained by molding the aromatic polycarbonate resin composition of Comparative Example 4 was also inferior in the results after the heating test.

As described above, the embodiment has been described as an illustration of the technique of the present invention. We have provided a detailed explanation for this.

Therefore, the components described in the detailed description include not only components that are essential for solving the problem, but also components that are not essential for solving the problem in order to exemplify the above technology. obtain. Therefore, the fact that those non-essential components are listed in the detailed description should not be taken as an immediate finding that those non-essential components are essential.

In addition, the above-described embodiments are intended to illustrate the technology of the present invention, and various modifications, replacements, additions, omissions, etc. can be made within the scope of the claims or equivalents thereof.

２．
前記ポリエーテル誘導体（Ｂ）が、下記式（１）で表され、５００～８０００の重量平均分子量を有するポリエーテル誘導体を含む、上記１に記載の芳香族ポリカーボネート樹脂組成物。
式（１）：
ＲＯ－（Ｘ－Ｏ）ｍ（Ｙ－Ｏ）ｎ－Ｒ’
（式中、ＲおよびＲ’は、それぞれ独立して水素原子または炭素数１～３０のアルキル基を示し、Ｘは、炭素数２～４の直鎖アルキレン基又は分岐アルキレン基を示し、Ｙは、炭素数２～５の直鎖アルキレン基又は分岐アルキレン基を示し、ＸとＹは同一であっても異なっていても良く、ｍ及びｎは、各々独立して、３～６０を示し、ｍ＋ｎは６～１２０を示す。）
３．
式（１）で表されるポリエーテル誘導体は、下記式（２）で表されるポリエーテル誘導体、式（３）で表されるポリエーテル誘導体、式（４）で表されるポリエーテル誘導体、式（５）で表されるポリエーテル誘導体、式（６）で表されるポリエーテル誘導体、式（７）で表されるポリエーテル誘導体、式（８）で表されるポリエーテル誘導体、式（９）で表されるポリエーテル誘導体及び式（１０）で表されるポリエーテル誘導体から選択される少なくとも１種を含む、上記２に記載の芳香族ポリカーボネート樹脂組成物。
式（２）：
ＨＯ－（ＣＨ _２ ＣＨ _２ ＣＨ _２ ＣＨ _２ Ｏ）ｍ（ＣＨ（ＣＨ _３ ）ＣＨ _２ Ｏ）ｎ－Ｈ
（式中、ｍ及びｎは、各々独立して、３～６０を示し、ｍ＋ｎは、８～９０を示す。）；
式（３）：
ＨＯ－（ＣＨ _２ ＣＨ _２ ＣＨ _２ ＣＨ _２ Ｏ）ｍ（ＣＨ _２ ＣＨ _２ ＣＨ（ＣＨ _３ ）ＣＨ _２ Ｏ）ｎ－Ｈ
（式中、ｍ及びｎは、各々独立して、３～６０を示し、ｍ＋ｎは、８～９０を示す。）；
式（４）：
ＨＯ－（ＣＨ _２ ＣＨ _２ Ｏ）ｍ（ＣＨ（ＣＨ _３ ）ＣＨ _２ Ｏ）ｎ－Ｈ
（式中、ｍ及びｎは、各々独立して、３～６０を示し、ｍ＋ｎは、８～９０を示す。）；
式（５）：
ＲＯ－（ＣＨ _２ ＣＨ _２ ＣＨ _２ ＣＨ _２ Ｏ）ｍ（ＣＨ（ＣＨ _３ ）ＣＨ _２ Ｏ）ｎ－Ｈ
（式中、Ｒは炭素数１～３０のアルキル基を示し、ｍ及びｎは、各々独立して、３～６０を示し、ｍ＋ｎは、８～９０を示す。）；
式（６）：
ＲＯ－（ＣＨ _２ ＣＨ _２ Ｏ）ｍ（ＣＨ（ＣＨ _３ ）ＣＨ _２ Ｏ）ｎ－Ｈ
（式中、Ｒは炭素数１～３０のアルキル基を示し、ｍ及びｎは、各々独立して、３～６０を示し、ｍ＋ｎは、８～９０を示す。）；
式（７）：
ＨＯ－（ＣＨ _２ ＣＨ _２ ＣＨ _２ ＣＨ _２ Ｏ）ｍ（ＣＨ _２ ＣＨ _２ Ｏ）ｎ－Ｈ
（式中、ｍ及びｎは、各々独立して、３～６０を示し、ｍ＋ｎは、８～９０を示す。）；
式（８）：
ＨＯ－（ＣＨ _２ ＣＨ _２ ＣＨ _２ ＣＨ _２ Ｏ）ｐ－Ｈ
（式中、ｐは、６～１００を示す。）；
式（９）：
ＨＯ－（ＣＨ（ＣＨ _３ ）ＣＨ _２ Ｏ）ｑ－Ｈ
（式中、ｑは、７～１２０を示す。）；
及び
式（１０）：
ＨＯ－（ＣＨ（Ｃ _２ Ｈ _５ ）ＣＨ _２ Ｏ）ｒ－Ｈ
（式中、ｒは、６～１００を示す。）
４．
ＪＩＳ Ｋ１５５７－４に準拠して測定される、ポリエーテル誘導体（Ｂ）のＣＰＲが３．５以下である、上記１～３のいずれかに記載の芳香族ポリカーボネート樹脂組成物。
５．
ＪＩＳ Ｋ１５５７－５に準拠して測定される、ポリエーテル誘導体（Ｂ）のｐＨが、５．０以上、７．５未満である、上記１～４のいずれかに記載の芳香族ポリカーボネート樹脂組成物。
６．
ＪＩＳ Ｋ７１２０に準拠する熱重量測定で測定される、ポリエーテル誘導体（Ｂ）の９０％重量となる温度（又は重量減少率が１０％となる温度）が、３００℃以上である、上記１～５のいずれかに記載の芳香族ポリカーボネート樹脂組成物。
７．
芳香族ポリカーボネート樹脂（Ａ）１００重量部に対して、芳香族化合物（Ｃ）を、０．０００５以上～０．００３重量部未満含む、上記１～６のいずれかに記載の芳香族ポリカーボネート樹脂組成物。
８．
芳香族ポリカーボネート樹脂（Ａ）１００重量部に対して、更に、リン系酸化防止剤（Ｄ）を、０．５重量部まで含有する、上記１～７のいずれかに記載の芳香族ポリカーボネート樹脂組成物。
９．
前記リン系酸化防止剤（Ｄ）が、下記亜リン酸エステル構造を有する亜リン酸エステル化合物を含む、上記８に記載の芳香族ポリカーボネート樹脂組成物。
［化２２］

１０．
前記リン系酸化防止剤（Ｄ）が、下記式（１１）、（１２）、（１３）及び（１４）で表される亜リン酸エステル化合物から選択される少なくとも１種以上の化合物を含む、上記９に記載の芳香族ポリカーボネート樹脂組成物。
式（１１）：
［化２３］

［式中、Ｒ ^１ は、炭素数１～２０のアルキル基又はアルキル基で置換されていてもよいアリール基を示し、ａは、０～３の整数を示す。］
式（１２）：
［化２４］

［式中、Ｒ ^２ 、Ｒ ^３ 、Ｒ ^５ 及びＲ ^６ は、各々独立して、水素原子、炭素数１～８のアルキル基、炭素数５～８のシクロアルキル基、炭素数６～１２のアルキルシクロアルキル基、炭素数７～１２のアラルキル基又はフェニル基を示す。Ｒ ^４ は、水素原子又は炭素数１～８のアルキル基を示す。Ｘは、単結合、硫黄原子又は式：－ＣＨＲ ^７ －（ここで、Ｒ ^７ は、水素原子、炭素数１～８のアルキル基又は炭素数５～８のシクロアルキル基を示す）で表される基を示す。Ａは、炭素数１～８のアルキレン基又は式：＊－ＣＯＲ ^８ －（ここで、Ｒ ^８ は、単結合又は炭素数１～８のアルキレン基を示し、＊は、酸素側の結合手であることを示す）で表される基を示す。Ｙ及びＺは、いずれか一方がヒドロキシル基、炭素数１～８のアルコキシ基又は炭素数７～１２のアラルキルオキシ基を示し、もう一方が水素原子又は炭素数１～８のアルキル基を示す。］
式（１３）：
［化２５］

［式中、Ｒ ^９ 、Ｒ ^１０ は炭素数１～２０のアルキル基、またはアルキル基で置換されてもよいアリール基を、ｂ及びCは、それぞれ独立して、整数０～３を示す。］
式（１４）：
［化２６］

［式中、Ｒ ^１１ ～Ｒ ^１８ は、それぞれ独立に、炭素数１～３のアルキル基またはアルケニル基を示す。Ｒ ^１１ とＲ ^１２ 、Ｒ ^１３ とＲ ^１４ 、Ｒ ^１５ とＲ ^１６ 、Ｒ ^１７ とＲ ^１８ とは、互いに結合して環を形成していても良い。Ｒ ^１９ ～Ｒ ^２２ は、それぞれ独立に、水素原子または炭素数１～２０のアルキル基を示す。ｄ～ｇは、それぞれ独立して、０～５の整数である。Ｘ ^１ ～Ｘ ^４ は、それぞれ独立に、単結合または炭素原子を示す。Ｘ ^１ ～Ｘ ^４ が単結合である場合、Ｒ ^１１ ～Ｒ ^２２ のうち、当該単結合に繋がった官能基は式（１４）から除外される。］
１１．
前記芳香族ポリカーボネート樹脂（Ａ）１００重量部に対して、さらに、エポキシ化合物（Ｅ）を、０．００１～０．２質量部含有する、上記１～１０のいずれかに記載の芳香族ポリカーボネート樹脂組成物。
１２．
前記エポキシ化合物（Ｅ）が、３’，４’－エポキシシクロヘキシルメチル－３，４－エポキシシクロヘキサンカルボキシレートを含む、上記１１に記載の芳香族ポリカーボネート樹脂組成物。
１３．
熱安定剤、酸化防止剤、着色剤、離型剤、軟化剤、帯電防止剤及び衝撃性改良剤を含む群から選択される少なくとも１種を更に含有する、上記１～１２のいずれかに記載の芳香族ポリカーボネート樹脂組成物。
１４．
上記１～１３のいずれかに記載の芳香族ポリカーボネート樹脂組成物を含む光学用成形品。
１５．
前記光学用成形品が、導光板、面発光体材料、導光フィルム、車両用ライトガイド及び銘板から選択される成形品を含む、上記１４記載の光学用成形品。
１６．
上記１～１３のいずれかに記載の芳香族ポリカーボネート樹脂組成物を成形することを含む、光学用成形品の製造方法。 The aromatic polycarbonate resin composition of the present invention is excellent in heat stability and weather resistance without impairing the properties such as heat resistance and mechanical strength inherent in the polycarbonate resin, and the aromatic polycarbonate resin of the present invention. Even when a molded article containing the composition is heated, it is excellent in appearance and optical properties. Therefore, even when the surface of the light guide plate is heated by irradiating the surface of the light guide plate with a thin light guide light source having a thickness of about 0.3 mm for a long period of time, the hue of the obtained light guide plate changes and the appearance of the light guide plate changes. and optical properties are not deteriorated, and the industrial utility value is extremely high.

This specification includes the following embodiments.
1.
An aromatic polycarbonate resin composition containing an aromatic polycarbonate resin (A), a polyether derivative (B) and an aromatic compound (C) represented by the following formula, wherein 100 parts by weight of the aromatic polycarbonate resin (A) On the other hand, the polyether derivative (B) contains 0.1 parts by weight or more and 3.0 parts by weight or less, and the aromatic compound (C) is contained in 0.0001 parts by weight or more and less than 0.1 parts by weight, and the polyether derivative ( The aromatic polycarbonate resin composition, wherein the skeleton portion of B) has an HLB value according to the Davis method of -12 or more and 15 or less.
formula:
[Chemical 21]

2.
2. The aromatic polycarbonate resin composition according to 1 above, wherein the polyether derivative (B) is represented by the following formula (1) and contains a polyether derivative having a weight average molecular weight of 500 to 8,000.
Formula (1):
RO-(X-O)m(Y-O)n-R'
(Wherein, R and R' each independently represents a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, X represents a linear or branched alkylene group having 2 to 4 carbon atoms, and Y is , represents a linear or branched alkylene group having 2 to 5 carbon atoms, X and Y may be the same or different, m and n each independently represents 3 to 60, m + n indicates 6 to 120.)
3.
The polyether derivative represented by the formula (1) includes a polyether derivative represented by the following formula (2), a polyether derivative represented by the formula (3), a polyether derivative represented by the formula (4), The polyether derivative represented by the formula (5), the polyether derivative represented by the formula (6), the polyether derivative represented by the formula (7), the polyether derivative represented by the formula (8), the formula ( 9) The aromatic polycarbonate resin composition according to 2 above, containing at least one selected from the polyether derivative represented by formula (10) and the polyether derivative represented by formula (10).
Formula (2):
HO- ₍ CH2CH2CH2CH2O ) _{m (} CH ₍ CH3 ) _CH2O ) _nH
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.);
Formula (3):
HO- ( _{CH2CH2CH2CH2O} ) m _{( CH2CH2CH (} CH3 ) _{CH2O )} nH _{_} _ _{_} _
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.);
Formula (4):
HO—(CH ₂ CH ₂ O)m(CH(CH ₃ )CH ₂ O)n—H
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.);
Formula (5):
RO- _{( CH2CH2CH2CH2O} ) m ₍ CH ₍ CH3 ) _{CH2O )} nH
(Wherein, R represents an alkyl group having 1 to 30 carbon atoms, m and n each independently represents 3 to 60, and m+n represents 8 to 90.);
Formula (6):
RO—(CH ₂ CH ₂ O)m(CH(CH ₃ )CH ₂ O)n—H
(Wherein, R represents an alkyl group having 1 to 30 carbon atoms, m and n each independently represents 3 to 60, and m+n represents 8 to 90.);
Formula (7):
HO- _{( CH2CH2CH2CH2O} ) m _{( CH2CH2O} ) nH _ _{_} _ _{_}
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.);
Formula (8):
HO—(CH ₂ CH ₂ CH ₂ CH ₂ O) pH
(Wherein, p represents 6 to 100.);
Formula (9):
HO-(CH(CH3 ₎ CH2O ₎ qH
(Wherein, q represents 7 to 120.);
as well as
Formula (10):
HO-(CH(C2H5 ₎ CH2O ₎ r _- H
(Wherein, r represents 6 to 100.)
4.
4. The aromatic polycarbonate resin composition according to any one of 1 to 3 above, wherein the polyether derivative (B) has a CPR of 3.5 or less, measured according to JIS K1557-4.
5.
5. The aromatic polycarbonate resin composition according to any one of 1 to 4 above, wherein the polyether derivative (B) has a pH of 5.0 or more and less than 7.5, as measured according to JIS K1557-5. .
6.
1 to 5 above, wherein the temperature at which the weight of the polyether derivative (B) becomes 90% (or the temperature at which the weight loss rate is 10%) is 300° C. or higher, as measured by thermogravimetry in accordance with JIS K7120. The aromatic polycarbonate resin composition according to any one of .
7.
7. The aromatic polycarbonate resin composition according to any one of 1 to 6 above, which contains 0.0005 to less than 0.003 parts by weight of the aromatic compound (C) with respect to 100 parts by weight of the aromatic polycarbonate resin (A). thing.
8.
8. The aromatic polycarbonate resin composition according to any one of 1 to 7 above, which further contains up to 0.5 parts by weight of a phosphorus antioxidant (D) with respect to 100 parts by weight of the aromatic polycarbonate resin (A). thing.
9.
9. The aromatic polycarbonate resin composition as described in 8 above, wherein the phosphorus-based antioxidant (D) contains a phosphite ester compound having the following phosphite structure.
[Chemical 22]

10.
The phosphorus antioxidant (D) contains at least one compound selected from phosphite ester compounds represented by the following formulas (11), (12), (13) and (14), 9. The aromatic polycarbonate resin composition as described in 9 above.
Formula (11):
[Chemical 23]

[In the formula, R ¹ represents an alkyl group having 1 to 20 carbon atoms or an aryl group optionally substituted with an alkyl group, and a represents an integer of 0 to 3. ]
Formula (12):
[Chemical 24]

[wherein R ² , R ³ , R ⁵ and R ⁶ are each independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, a It represents an alkylcycloalkyl group, an aralkyl group having 7 to 12 carbon atoms, or a phenyl group. R ⁴ represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. X is a single bond, a sulfur atom, or represented by the formula: —CHR ⁷ — (here, R ⁷ represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a cycloalkyl group having 5 to 8 carbon atoms); indicates a group. A is an alkylene group having 1 to 8 carbon atoms or the formula: *-COR ⁸ — (wherein R ⁸ represents a single bond or an alkylene group having 1 to 8 carbon atoms, * is a bond on the oxygen side; It shows that there is a group represented by). One of Y and Z represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. ]
Formula (13):
[Chemical 25]

[In the formula, R ⁹ and R ¹⁰ represent an alkyl group having 1 to 20 carbon atoms or an aryl group which may be substituted with an alkyl group; b and C each independently represents an integer of 0 to 3; ]
Formula (14):
[Chemical 26]

[In the formula, R ¹¹ to R ¹⁸ each independently represent an alkyl or alkenyl group having 1 to 3 carbon atoms. R ¹¹ and R ¹² , R ¹³ and R ¹⁴ , R ¹⁵ and R ¹⁶ , R ¹⁷ and R ¹⁸ may combine with each other to form a ring. R ¹⁹ to R ²² each independently represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms. d to g are each independently an integer of 0 to 5; X ¹ to X ⁴ each independently represent a single bond or a carbon atom. When X ¹ to X ⁴ are single bonds, functional groups connected to the single bonds among R ¹¹ to R ²² are excluded from formula (14). ]
11.
11. The aromatic polycarbonate resin according to any one of 1 to 10 above, which further contains 0.001 to 0.2 parts by mass of an epoxy compound (E) with respect to 100 parts by weight of the aromatic polycarbonate resin (A). Composition.
12.
12. The aromatic polycarbonate resin composition as described in 11 above, wherein the epoxy compound (E) comprises 3′,4′-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate.
13.
13. The composition according to any one of 1 to 12 above, further comprising at least one selected from the group consisting of heat stabilizers, antioxidants, colorants, release agents, softeners, antistatic agents and impact modifiers. aromatic polycarbonate resin composition.
14.
14. An optical molded article comprising the aromatic polycarbonate resin composition according to any one of 1 to 13 above.
15.
15. The optical molded product according to 14 above, wherein the optical molded product includes a molded product selected from a light guide plate, a surface light emitter material, a light guide film, a vehicle light guide and a nameplate.
16.
14. A method for producing an optical molded article, comprising molding the aromatic polycarbonate resin composition according to any one of 1 to 13 above.

Claims (16)

An aromatic polycarbonate resin composition containing an aromatic polycarbonate resin (A), a polyether derivative (B) and an aromatic compound (C) represented by the following formula, wherein 100 parts by weight of the aromatic polycarbonate resin (A) On the other hand, the polyether derivative (B) contains 0.1 parts by weight or more and 3.0 parts by weight or less, and the aromatic compound (C) is contained in 0.0001 parts by weight or more and 0.003 parts by weight or less , and the polyether derivative ( The aromatic polycarbonate resin composition, wherein the skeleton portion of B) has an HLB value according to the Davis method of -12 or more and 15 or less.
formula:

The aromatic polycarbonate resin composition according to claim 1, wherein the polyether derivative (B) is represented by the following formula (1) and contains a polyether derivative having a weight average molecular weight of 500 to 8,000.
Formula (1):
RO-(X-O)m(Y-O)n-R'
(Wherein, R and R' each independently represents a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, X represents a linear or branched alkylene group having 2 to 4 carbon atoms, and Y is , represents a linear or branched alkylene group having 2 to 5 carbon atoms, X and Y may be the same or different, m and n each independently represents 3 to 60, m + n indicates 6 to 120.) The polyether derivative represented by the formula (1) includes a polyether derivative represented by the following formula (2), a polyether derivative represented by the formula (3), a polyether derivative represented by the formula (4), The polyether derivative represented by the formula (5), the polyether derivative represented by the formula (6), the polyether derivative represented by the formula (7), the polyether derivative represented by the formula (8), the formula ( 3. The aromatic polycarbonate resin composition according to claim 2, comprising at least one selected from the polyether derivative represented by 9) and the polyether derivative represented by formula (10).
Formula (2):
HO-( _{CH2CH2CH2CH2O} )m ₍ CH _{( CH3} ) _CH2O ) _nH
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.);
Formula (3):
HO-( _{CH2CH2CH2CH2O} ) _{m ( CH2CH2CH ( CH3} ) _CH2O ) _nH
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.);
Formula (4):
HO—(CH ₂ CH ₂ O)m(CH(CH ₃ )CH ₂ O)n—H
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.);
Formula (5):
RO-( _{CH2CH2CH2CH2O} )m ₍ CH _{( CH3} ) _CH2O ) _nH
(Wherein, R represents an alkyl group having 1 to 30 carbon atoms, m and n each independently represents 3 to 60, and m+n represents 8 to 90.);
Formula (6):
RO—(CH ₂ CH ₂ O)m(CH(CH ₃ )CH ₂ O)n—H
(Wherein, R represents an alkyl group having 1 to 30 carbon atoms, m and n each independently represents 3 to 60, and m+n represents 8 to 90.);
Formula (7):
HO- _{( CH2CH2CH2CH2O} ) _{m ( CH2CH2O} ) _nH
(Wherein, m and n each independently represent 3 to 60, and m+n represents 8 to 90.);
Formula (8):
HO—(CH ₂ CH ₂ CH ₂ CH ₂ O) pH
(Wherein, p represents 6 to 100.);
Formula (9):
HO-(CH( _CH3 ) _CH2O )qH
(Wherein, q represents 7 to 120.);
and Equation (10):
HO-(CH( _C2H5 ) _CH2O )r _- H
(Wherein, r represents 6 to 100.) 4. The aromatic polycarbonate resin composition according to any one of claims 1 to 3, wherein the polyether derivative (B) has a CPR of 3.5 or less, measured according to JIS K1557-4. The aromatic polycarbonate resin composition according to any one of claims 1 to 4, wherein the polyether derivative (B) has a pH of 5.0 or more and less than 7.5, as measured according to JIS K1557-5. thing. The temperature at which the weight of the polyether derivative (B) reaches 90% (or the temperature at which the weight loss rate reaches 10%), as measured by thermogravimetry in accordance with JIS K7120, is 300° C. or higher. 6. The aromatic polycarbonate resin composition according to any one of 5. The aromatic polycarbonate according to any one of claims 1 to 6, comprising 0.0005 parts by weight or more and 0.003 parts by weight or less of the aromatic compound (C) with respect to 100 parts by weight of the aromatic polycarbonate resin (A). Resin composition. The aromatic polycarbonate resin according to any one of claims 1 to 7, further containing up to 0.5 parts by weight of a phosphorus antioxidant (D) with respect to 100 parts by weight of the aromatic polycarbonate resin (A). Composition. The aromatic polycarbonate resin composition according to claim 8, wherein the phosphorus antioxidant (D) contains a phosphite ester compound having the following phosphite structure.

The phosphorus antioxidant (D) contains at least one compound selected from phosphite ester compounds represented by the following formulas (11), (12), (13) and (14), The aromatic polycarbonate resin composition according to claim 9.
Formula (11):

[In the formula, R ¹ represents an alkyl group having 1 to 20 carbon atoms or an aryl group optionally substituted with an alkyl group, and a represents an integer of 0 to 3. ]
Formula (12):

[wherein R ² , R ³ , R ⁵ and R ⁶ are each independently a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, a It represents an alkylcycloalkyl group, an aralkyl group having 7 to 12 carbon atoms, or a phenyl group. R ⁴ represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. X is a single bond, a sulfur atom, or represented by the formula: —CHR ⁷ — (here, R ⁷ represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or a cycloalkyl group having 5 to 8 carbon atoms); indicates a group. A is an alkylene group having 1 to 8 carbon atoms or the formula: *-COR ⁸ — (wherein R ⁸ represents a single bond or an alkylene group having 1 to 8 carbon atoms, * is a bond on the oxygen side; It shows that there is a group represented by). One of Y and Z represents a hydroxyl group, an alkoxy group having 1 to 8 carbon atoms or an aralkyloxy group having 7 to 12 carbon atoms, and the other represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms. ]
Formula (13):

[In the formula, R ⁹ and R ¹⁰ represent an alkyl group having 1 to 20 carbon atoms or an aryl group which may be substituted with an alkyl group; b and C each independently represents an integer of 0 to 3; ]
Formula (14):

[In the formula, R ¹¹ to R ¹⁸ each independently represent an alkyl or alkenyl group having 1 to 3 carbon atoms. R ¹¹ and R ¹² , R ¹³ and R ¹⁴ , R ¹⁵ and R ¹⁶ , R ¹⁷ and R ¹⁸ may combine with each other to form a ring. R ¹⁹ to R ²² each independently represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms. d to g are each independently an integer of 0 to 5; X ¹ to X ⁴ each independently represent a single bond or a carbon atom. When X ¹ to X ⁴ are single bonds, functional groups connected to the single bonds among R ¹¹ to R ²² are excluded from formula (14) . ] The aromatic polycarbonate according to any one of claims 1 to 10, further containing 0.001 to 0.2 parts by mass of an epoxy compound (E) with respect to 100 parts by weight of the aromatic polycarbonate resin (A). Resin composition. The aromatic polycarbonate resin composition according to claim 11, wherein the epoxy compound (E) comprises 3',4'-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate. Any one of claims 1 to 12, further comprising at least one selected from the group comprising heat stabilizers, antioxidants, colorants, release agents, softeners, antistatic agents and impact modifiers. The aromatic polycarbonate resin composition described. An optical molded article comprising the aromatic polycarbonate resin composition according to any one of claims 1 to 13. 15. The optical molded product according to claim 14, wherein the optical molded product comprises a molded product selected from a light guide plate, a surface light emitter material, a light guiding film, a vehicle light guide and a nameplate. A method for producing an optical molded article, comprising molding the aromatic polycarbonate resin composition according to any one of claims 1 to 13.