JPH0813530B2 - Chlorine-containing resin molded product - Google Patents

Description

TECHNICAL FIELD The present invention relates to a molded product of a chlorine-containing resin, and in particular, a manufacturing facility for electronic parts such as semiconductors, a packaging container, a device case thereof, and further biochemistry, medical treatment, and pharmaceuticals. , A novel chlorine-containing resin molded product that is preferably used for food-related applications.

(Prior art) A typical example of chlorine-containing resin is vinyl chloride (hereinafter referred to as PVC).
Resin is widely used as a synthetic resin molded product because it is inexpensive, tough, and has excellent chemical resistance and secondary workability. Due to the characteristics of the resin structure of the PVC resin, H and Cl elements are liberated and dehydrochlorinated depending on the temperature during molding, and the molded product turns yellow or black, so a stabilizer for PVC resin should be added in advance in the resin raw material. Generally, it is added. As such a stabilizer, a stabilizer of Pb or Sn-based metal compound is mainly used, and the same metal-based stabilizer is also used in chlorine-containing resins other than PVC.

(Problems to be Solved by the Invention) By the way, recently, there has been remarkable development of electronic components mainly composed of semiconductors. However, such semiconductor manufacturing facilities, packaging containers for semiconductor components, and devices using the semiconductors have been developed. It is well known that synthetic resin molded products have come to be used for related devices such as cases. In the manufacturing process of electronic parts using such manufacturing equipment, various treatments such as water washing and pickling must be performed, and this is also true of packaging containers, equipment cases, etc. Alternatively, in a chlorine-containing resin containing a metal compound such as Sn as a stabilizer, these metal elements are eluted during the above treatment, which adversely affects electronic parts and the like.
It could not be used as a member for megabit semiconductors. Furthermore, when the chlorine-containing resin containing a metal element is also used as the exterior material of the above-mentioned manufacturing facility, the exterior material is peeled off due to abrasion or the like, or the metal element is broken out, and this is dispersed in the atmosphere to electronic parts or the like. There was also the problem of having an adverse effect. In addition, elution and diffusion of metals have caused various troubles in biochemical, medical, pharmaceutical, and food-related applications. From such circumstances, there is a case where a fluororesin having extremely excellent thermal stability is used as the synthetic resin applied to the above-mentioned applications, but the fluororesin is expensive and difficult to be secondary processed such as welding. However, it lacks versatility because it has the drawback. Therefore, it has been strongly desired that the chlorine-containing resin, which does not have such drawbacks and is inexpensive, tough, and excellent in chemical resistance, is suitable for the above-mentioned applications.

Generally, synthetic resin molded products have a large electrical resistivity (the chlorine-containing resins mentioned above are not exceptions and are about 10 ¹⁵ Ωcm).
It is easily charged by rubbing or peeling of the masking film and adsorbs dust and dirt in the atmosphere, so that when it is used for the above-mentioned purpose, it adversely affects the performance of electronic parts and the like.

The present invention has been made in view of the above, the surface of the chlorine-containing resin stabilized by a conventional metal-based stabilizer, Pb and Sn
By covering with chlorine-containing resin stabilized by a stabilizer that does not contain metal elements, and antistatic or conductive materials, metal elements do not elute or diffuse and dust and dirt adhere Therefore, it is an object of the present invention to provide a novel chlorine-containing resin molded product which is extremely effective and inexpensive for the above semiconductor-related applications.

(Means for Solving the Problems) The structure of the chlorine-containing resin molded product of the present invention for achieving the above object will be described with reference to the accompanying example drawings. FIG. 1 shows an example of the molded product of the present invention. Second partial cutaway vertical section shown
The figure is a partially enlarged perspective view showing an application example thereof. That is, the chlorine-containing resin molded article of the present invention comprises a base layer portion 1 of a chlorine-containing resin stabilized by a metal-based stabilizer and a non-metal-based stabilizer such as aminocarboxylic acid, hydrazide, epoxy compound and organic phosphite ester. A non-metal coating layer 2 composed of a chlorine-containing resin stabilized by any one or several selected from the above and laminated on one surface of the base layer portion, and directly on the other surface of the base layer portion or via a resin film. The gist of the present invention is that it is composed of the antistatic or conductive coating layer 3 laminated as a layer.

(I) Regarding Base Layer Part 1; The chlorine-containing resin constituting the base layer part 1 is a lead-based material such as conventional tribasic lead sulfate, dibasic lead stearate, lead stearate, or a zinc-based material such as zinc stearate. Alkaline earth metal stabilizers such as barium stearate, calcium stearate, and tin-based metal stabilizers such as butyltin urealate, butyltin malate, butyltin mercapto, octyltin laurate, octyltin malate, and octyltin mercapto. Stabilized chlorine-containing resin, and this chlorine-containing resin is mainly composed of vinyl chloride, such as PVC resin, chlorinated vinyl chloride resin, ethylenized vinyl chloride resin, alloys with other resins, etc. Refers to resin. Various chlorine-containing resins having a degree of polymerization of 600 to 1500 are adopted, but those having a polymerization degree of 1000 to 1200 are preferably used in view of physical properties and processability. In addition to the above metal-based stabilizers, stabilizing aids such as epoxy, lubricants, ultraviolet absorbers, plasticizers, pigments and the like are appropriately added as in the conventional case.

(Ii) Regarding the non-metal coating layer 2; The chlorine-containing resin constituting the non-metal coating layer 2 is stabilized by the non-metal stabilizer as described above. Aminocarboxylic acid is a general term for compounds having an amino group and a carboxylic acid group, and examples of the compound having this amino group include ammonia, urea, acrylonitrile, aminoacetanilide, aminoanthraquinone, aminoethanol, aminoethylene, aminoethylbenzene. , Aminocresol, aminophenol, caprolactam, and the like, while compounds having a carboxylic acid group include butyric acid, caproic acid, lauric acid, palmitic acid, stearic acid, crotonic acid, oleic acid,
Examples thereof include linolenic acid, benzoic acid, naphthoic acid, malonic acid, succinic acid, adipic acid, maleic acid and phthalic acid. Further, as typical examples of aminocarboxylic acids which are these compounds, acetylglutamic acid, glycine, alanine, pyrrolidonecarboxylic acid, lysine, alkynine, tryptophan, anthranilic acid, benzoic acid, β-aminocrotonic acid, α-amino acid. Acrylic acid, α
-Aminoadipic acid, aminomaleic acid, acetylphenylalanine, acetylmethionine and their ester compounds, and further ester compounds of acetylamino acid and pentaerythritol or dipentaerythritol, 2
Examples include ester compounds of -pyrrolidone-5-carboxylic acid and pentaerythritol. Among these aminocarboxylic acids, β-aminocrotonic acid ester has the general formula However, it is represented by n; 1 to 6 R; a residue of a mono- to hexa-valent alcohol. Specific examples of ROH) n constituting this ester include methanol, ethanol, propanol, isopropanol, butanol,
-Ethylhexanol, isooctanol, octanol, isononanol, decanol, lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, ethylene glycol, propylene glycol, 1,3-butanediol, 1,4-butanediol, 1,6- Hexanediol, 1,10-decanediol,
Diethylene glycol, thiodiethanol, trimethylolpropane, glycerin, tris (2-hydroxyethyl) isocyanurate, triethanolamine, pentaerythritol, ditrimethanolpropane, diglycerin, sorbitol, mannitol, xylitol,
Examples include dipentaerythritol. Then, these alcohols and β-aminocrotonic acid are polycondensed to obtain the above-mentioned ester, and preferred specific examples of the ester include stearyl alcohol β-aminocrotonic acid ester and 1,4 butanediol diβ-aminocrotonone. Acid ester, thiodiethanol diβ-aminocrotonic acid ester, trimethylolpropane triβ-aminocrotonic acid ester, pentaerythritol tetra β-aminocrotonic acid ester, dipentaerythritol hexaβ
-Aminocrotonic acid esters and the like.

Hydrazide is represented by the general formula RCONHNH ₂ (R is an alkyl group or an aryl group), and specific examples thereof include acetohydrazide, butyric acid hydrazide, caproic acid hydrazide, lauric acid hydrazide, palmitic acid hydrazide, and stearic acid hydrazide. , Crotonic acid hydrazide, oleic acid hydrazide,
Linolenic acid hydrazide, benzoic acid hydrazide, naphthoic acid hydrazide, malonic acid hydrazide, succinic acid hydrazide, glutamic acid hydrazide, adipic acid hydrazide,
Maleic acid hydrazide, phthalic acid hydrazide, etc. are used.

Further, as the epoxy compound, epoxidized animal and vegetable oil,
Examples thereof include epoxidized fatty acid esters, epoxidized alicyclic compounds, glycidyl ether or glycidyl ester compounds, and epoxy compounds such as epoxidized polymer compounds. Specifically, as the epoxidized animal and vegetable oil, epoxidized soybean oil, epoxidized linseed oil, epoxidized safflower oil, epoxidized sunflower oil, epoxidized cottonseed oil and the like, as the epoxidized fatty acid ester, epoxidized butyl stearate, Epoxidized octyl stearate, epoxidized linseed oil fatty acid butyl, etc., epoxidized alicyclic compound, epoxidized tetrahydrophthalic acid ester (butanol, octanol, decanol etc. as alcohol), bisphenol A as glycidyl ether or glycidyl ester compound Examples of glycidyl ether, glycidyl methacrylate and polymers thereof include epoxidized polymer compounds such as epoxidized polybutadiene and epoxidized acrylonitrile-butadiene rubber.

Examples of the organic phosphite include triphenyl phosphite, tris (p-phenylphenyl) phosphite, tris (o-cyclohexylphenyl) phosphite, tris (p-nonylphenyl) phosphite,
Triaryl phosphites such as phenyl-p-nonylphenyl phosphite and tris (2,4 ditbutylphenyl) phosphite, alkyl aryl phosphites such as monoalkyldiphenyl phosphite and dialkylmonophenyl phosphite, glycols and polyols Or oligophosphite oligodated with bisphenyl, trisphenol or the like, and acid phosphite such as difer amide phosphite or dilauryl amide phosphite are used.

As other non-metal stabilizers, phenol derivatives, polyhydric alcohols, nitrogen-containing compounds, sulfur-containing compounds and keto compounds are used. As the phenol derivative, hindered phenol, hindered bisphenol, etc. are used, and as the polyhydric alcohol, glycerin, mannitol, xylitol, trimethylolpropane, pentaerythritol, sorbitol, polyethylene glycol, sorbitan monolaurate, glycerin monostearate and Partial ester compounds with carboxylic acids, nitrogen-containing polyhydric alcohols, sulfur-containing polyhydric alcohols and the like are used, and as the nitrogen-containing compound, 2-phenylindole, diphenylthiourea, triazine and the like are used, and as the sulfur-containing compound, , Thiodipropionate,
Triazine thiol, thiol carboxylic acid anhydride, etc.
As the keto compound, acetoacetic acid ester, dehydroacetic acid, β-diketone and the like are adopted.

These stabilizers add 0.5 to 7.0 parts by weight in total to 100 parts by weight of the chlorine-containing resin to mainly stabilize the chlorine-containing resin, but these stabilizers do not contain metal elements such as Pb and Sn. It is characterized by not being able to. The proper amount of the stabilizer added to the chlorine-containing resin is as described above,
If it is less than 0.5 parts by weight, sufficient thermal stability cannot be obtained. On the other hand, if it exceeds 7.0 parts by weight, the thermal stability is improved, but it is economically disadvantageous. Among these stabilizers, in the case of using aminocarboxylic acid, hydrazide, epoxy compound, and organic aspart phosphite alone or in combination, 0.5 to 5 parts by weight, preferably 1.0 to 3.0 parts by weight, and phenol Derivative, polyhydric alcohol, nitrogen-containing compound,
When the sulfur-containing compound or keto compound is used alone or in combination with the above stabilizer, it is used in an amount of 2 to 7 parts by weight, preferably 3 to 5 parts by weight. These stabilizers may be used alone or in combination, and when they are combined, a combination of aminocarboxylic acid and epoxy compound, a combination of aminocarboxylic acid, epoxy compound and organic phosphite, hydrazide, epoxy compound and organic sulfite are used. A combination of a phosphoric acid ester, a combination of an epoxy compound and an organic phosphorous acid ester, and the like are desirably adopted.

Moreover, in order to improve the release from the mold at the time of molding and to improve the finished appearance (especially luster, gloss, etc.) of the molded product, the chlorine-containing resin described above contains higher fatty acids such as stearic acid. An acrylic lubricant that does not lower the softening temperature is used.

The above-mentioned stabilizers contribute to the thermal stability of the chlorine-containing resin as a main stabilizer, and the lubricant imparts lubricity to the resin, but other metal-free additives, for example, amine-based and phenol-based additives. , Sulfur-based, phosphorus-based antioxidants, light stabilizers such as UV absorbers, phthalates, aromatic carboxylic esters, plasticizers such as aliphatic dibasic esters, reinforcement of ABS / MBS for transparency, etc. Add additives such as agents, pigments, auxiliaries, antifungal agents, and foaming agents to help stabilize the chlorine-containing resin, improve processability, improve weather resistance, and improve mechanical properties. Or it can be softened and foamed.

(Iii) Regarding antistatic or conductive coating layer 3; (iii-1) The antistatic or conductive coating layer 3 is an antistatic synthetic resin proposed in Japanese Patent Application No. 58-91182 filed by the present applicant. What was formed on the base layer part 1 by applying the technique according to the manufacturing method of the sheet is preferably adopted. That is, SnO ₂ , TiO ₂ , In ₂ O ₃
And conductive oxides such as ZnO or Au, Pt, Cu, Pd and N
A conductive coating material in which fine metal powder such as i is dispersed is applied on the base layer portion 1 and dried, and the fine powder is left on the surface portion of the coating film, and subsequently hot pressed in the thickness direction to fine powder on the surface portion. Is formed by press-fitting the inside of the coating film and softening and rolling the coating film on the surface portion, or by coating and drying the above-mentioned conductive coating on another synthetic resin film to form the base layer portion 1
In the same manner as described above, when it is laminated and integrated, the one formed by hot pressing to press fine powder into the inside is adopted. In this case, the electrical low efficiency of the coating layer 3 is 10 ⁴ to 10 ⁵ Ωcm.

(Iii-2) Further, a kraft copolymer obtained by graft-polymerizing a vinyl monomer or a vinylidene monomer onto a rubber trunk polymer having a small volume resistivity or a graft copolymer thereof, It is also possible to laminate the base layer 1 with an antistatic resin obtained by making compatible thermoplastic resins compatible with each other. In this case, the electric resistivity of the coating layer 3 is 10 ¹¹ to 10 ¹³ Ωcm. The rubber trunk polymer is
Monomer having 4 to 500 alkylene oxide groups 10
It is a copolymer composed of 50 to 90% by weight and 50 to 90% by weight of one or more monomers selected from conjugated dienes and acrylates. The phase of this rubber trunk polymer is dispersed in the branched polymer phase in a bridge state during processing, and the charge is diffused and attenuated mainly through this rubber trunk polymer phase, thereby providing an antistatic effect. Demonstrate. Moreover, since the polyalkylene oxide group is chemically bonded to the rubber trunk polymer, the antistatic property is not deteriorated even by rigorous washing with water, so that it also has a permanent antistatic effect. Although the above graft copolymer can be used alone, it is preferable to use a thermoplastic resin compatible with it in consideration of the layerability with the base layer portion 1 or the surface hardness. The thermoplastic resin is not particularly limited as long as it is a resin compatible with the graft copolymer, but PVC resin, polyvinylidene chloride resin, nitrile resin, surface hardness having good lamination properties with respect to the chlorine-containing resin of the base layer part 1. Excellent polymethylmethacrylate resin and its copolymer, acrylic-styrene-
Butadiene resin and the like are preferable, and in particular, the chlorine-containing resin stabilized by the non-metal-based stabilizer used in the non-metal coating layer 2 contains no metal, has good lamination properties, and has chemical resistance. It is most preferably adopted because it is excellent. The blending ratio of the thermoplastic resin and the graft copolymer is 10 to 99 parts by weight of the graft copolymer,
90 to 1 parts by weight of the thermoplastic resin is suitable, but 5 to 80% by weight, preferably 8 to 60% by weight of the rubber trunk polymer is contained in the total amount of the graft copolymer and the thermoplastic resin. It is essential to mix them as described above.

(Iii-3) In addition, PVC resin, polyvinylidene chloride resin, nitrile resin, polymethylmethacrylate resin and its copolymer, synthetic resin such as acryl-styrene-butadiene resin, conductive carbon, graphite, carbon fiber and metal It is also formed by blending conductive fillers such as fibers alone or in an appropriate combination and laminating the blended on the base layer portion 1. In this case, the electric resistivity of the coating layer 3 can be 10 ² Ωcm or less.

The materials prepared for the base layer portion 1 and the coating layers 2 and 3 as described above are laminated and integrated at the time of molding and molded into a desired shape. Here, the desired shape means the shape of a plate-like body as shown in FIG. 1 or a box-shaped case as shown in FIG. Is included.

Here, if an example of the molding method with a plate-like body is shown, the above (iii
The conductive paint shown in -1) is applied to a PVC film or an acrylic resin film and dried, and a plurality of PVC calender sheets according to (i) and a calender sheet according to (ii) are laminated and laminated by hot pressing. Or a plurality of calender sheets according to (ii) and a plurality of PVC calender sheets according to (i) are laminated by press molding, and the conductive paint according to (iii-1) is applied and dried on one side. The method of doing is mentioned.

In this case, it is necessary to arrange the non-metal coating layer 2 so as to face at least the side in contact with the drug solution or food, depending on its use. It is necessary to mold so that the non-metal coating layer 2 comes.

In addition, the molded article of the present invention is transparent depending on its use,
It is supplied as an opaque or opaque molded product, but for that purpose, it is necessary to appropriately add a colorant to the base layer portion 1 and / or the non-metal coating layer 2. The non-metal coating layer 2 is transparent by itself, but if it is desired to color the non-metal coating layer 2, various non-metal colorants such as organic pigments, acrylic modified modifiers, and ABS are used.
Resin, MBS resin, AAS resin, AES resin, ACS resin, AS resin,
EVA resin, carbon black, etc. are appropriately added. also,
In addition to the above colorants, ordinary pigments containing a metal such as titanium oxide are appropriately added to the base layer portion 1. In addition, it is preferable that the base layer portion 1 is toned to have the same color as the non-metal coating layer 2.

(Function) In the molded product of the present invention obtained as described above, the temperature of the chlorine-containing resin becomes 150 to 200 ° C. at the time of molding, so that H and Cl of the resin structure are formed unless the stabilizer is contained in the resin. Are released and dehydrochlorinated, and the resin turns yellow or black. However, since the chlorine-containing resin constituting the base layer portion 1 and the non-metal coating layer 2 of the molded product of the present invention is provided with thermal stability by the above-mentioned respective stabilizers, it may be discolored even when the temperature rises during molding. Absent.

The chlorine-containing resin that constitutes the non-metal coating layer 2 includes
Since it does not substantially contain a metal element, when it is used for the above-mentioned applications, if it is used so that the coating layer 2 comes into contact with a liquid medicine or food, harmful liquid such as Pb or Sn may be added to the liquid medicine or food. The metal element does not elute, and there are no fears of various adverse effects.

In addition, the expression that it is substantially free of metal is used here when the chlorine-containing resin, the stabilizer, the lubricant, the colorant or the like is produced, and when the molding is performed, it is not intentional but unavoidable. This is because a trace amount of metal may be mixed in such a range that the metal cannot be said to be completely absent in the final molded product.

Further, the antistatic or conductive coating layer 3 has an antistatic function, has no fear of adsorbing dust and dirt in the atmosphere, and is coupled with the non-metal characteristic of the coating layer 2. It is extremely suitable for the above-mentioned semiconductor-related applications. Especially the coating layer 3
Is formed by the above (iii-1), its electric resistivity is low and a good antistatic effect is obtained. Also (iii−
When the graft copolymer according to 2) is used, even if it is used under severe conditions such as washing with water, the antistatic function is not permanently impaired, and if a thermoplastic resin is used in combination with the graft copolymer, The rubber trunk polymer comes to be embedded in the thermoplastic resin, ensuring the permanent durability of the antistatic function.

Moreover, since the base layer part 1 is composed of a chlorine-containing resin stabilized by a conventional metal-based stabilizer, its original excellent rigidity is exhibited in a molded product, and the temperature of the resin is heat-flexible (heat-deformation) temperature. Since the temperature is high, the molded product does not deform even if the operating temperature is raised, which further contributes to cost reduction.

Also, a colorant (pigment) can be freely added to the base layer part 1,
Since it can be transparent, opaque, and even colored, the molded product can be shaped accordingly. Non-metal coating layer 2
Since a non-metallic colorant must be added, a large amount of the above resin must be added to make it opaque, and the hue cannot be freely selected. Since the functional coating layer 3 is limited to the material that exerts its performance, the hue cannot be freely set, and the thickness must be thin from the viewpoint of cost, and there is a problem in opacity and colorability only with these. Is solved as described above by using the base layer portion 1 as the intermediate layer. In addition, since the base layer portion 1 uses a metal-based stabilizer, it has good heat resistance and can be thickened, and the molded product can be thickened. The chlorine-containing resin used for the base layer portion 1 should be stabilized by using a Sn-based stabilizer to improve the stackability with the non-metal coating layer 2, workability, warpage,
Excellent in secondary workability (bending, welding) and preferable.

(Example) Next, an example will be described.

(I) Preparation of test piece (i) A chlorine-containing resin for the base layer portion 1 was prepared according to the formulation shown in Table 1.

(Ii) A chlorine-containing resin for the non-metal coating layer 2 was prepared according to the formulation shown in Table 2.

(Iii) A material for the antistatic or conductive coating layer 3 was prepared as follows.

(Iii-1) 15% fine particles of conductive SnO _{2 with} a particle size of 0.1 μm or less
(Weight ... same below), polyester resin 8%, dispersant 0.
A conductive paint consisting of 6% of solvent and 76.4% of solvent was prepared, and this was coated on one side of a PVC film having a thickness of 0.3 mm by a roll coater method and dried at about 60 ° C for several minutes (a).

(Iii-2) Graft copolymer [Kureha Chemical Industry Co., Ltd.
Manufactured by RRY-009] 100% (B), and a blend of 50 parts by weight of the copolymer and 50 parts by weight of a resin equivalent to those in Table 2 above (C). It was a 0.25 mm sheet.

(Iii-3) Ketjen Black 10 manufactured by Dainippon Ink and Chemicals, Inc. in 100 parts by weight of the resin as shown in Table 2 above.
A sheet having a thickness of 0.5 mm was prepared by blending parts by weight (d).

(Iv) Forming the blended resin of (i) and (ii) into a 0.5 mm sheet by calender rolls (160 ° C x 5 minutes), respectively (i)
16 sheets are laminated, 4 sheets of (ii) are laminated on one side, and a film of (iii) is laminated on the other side and heated and pressed by a press (160 ° C x 5 minutes). A test piece having a thickness of about 10 mm was prepared, and the test pieces formed by combining these were taken as Examples 1 to 21. However, the combination mode will be described later.

(V) Only 20 sheets with a thickness of 0.5 mm made of the compounded resin of Table 1 a are stacked, and this is heated and pressed to form a test piece with a thickness of 10 mm in the same manner as (iv), and this is compared. The example (1) was adopted.

(II) Measurement of thermal stability The hue change of the outer surface of the test pieces obtained by the heat molding of (iv) and (v) above was observed. The results are shown in Table 4.

However, a and b in parentheses after the embodiment are the first
The type of the base layer portion 1 in the table, or the type of the non-metal coating layer 2 in Table 2, and a to d are the above (I)-
Each of the types of the antistatic or conductive coating layer 3 shown in (iii) is shown. The change in hue was determined on the surface of the non-metal coating layer 2.

As can be seen in this Table 4, Examples 13 to 16 and 2
In Nos. 1 and 22, no hue change was observed, and the same thermal stability as in Comparative Example 1 was exhibited. In addition, 17 to 20 are very slightly yellowish, Examples 1 to 8 and 9 to 12 are slightly yellowish, and Examples 5 to 8 are yellowish and are slightly more heat stable than Comparative Example 1. Although it was inferior to the above, there was no problem in thermocompression moldability. In addition, all the test pieces were excellent in stackability.

(III) Measurement of General Physical Properties General physical properties of the test pieces of Examples 13, 14, 15, 16, 21, 22 and Comparative Example 1 were measured. Table 5 shows the results. However, in Examples 16 and 22, only the surface resistivity and the total light transmittance were measured.

As can be seen in Table 5 above, 13, 14, and 15 are comparative examples 1
Compared with, it shows almost the same physical property values, and it can be seen that it can be used in the same way as conventional PVC plates. It can be seen that Example 21 has a Charpy value about twice and can be used as an impact resistant plate.

In addition, Examples 13 and 21 have a surface resistivity of 10 ⁷ Ω-cm and exhibit good antistatic property. On the other hand, the surface resistivities of Examples 14 and 15 are both 10 ¹¹ Ω-cm, and have an antistatic function to the extent that dust and dirt are not adsorbed. Further, the surface resistivity of Example 16 is 10 ² Ω-cm, which shows that it has a conductive function. Further, it can be seen that Example 21 has a low total light transmittance and is non-translucent. Further, it can be seen that Example 22 is opaque because it does not transmit any light rays.

(V) Elution test Samples prepared separately in the same manner as in Comparative Example 1 (referred to as Comparative Example 2) using the above-mentioned Examples 13, 14, 15 and Comparative Examples 1 and PVC resin containing Pb as the main stabilizer in pure water. A trace amount of the metal thus eluted was analyzed by atomic absorption spectrometry and ICP emission spectrometry. However, as shown in FIG. 2, the non-metal coating layer was placed inside and molded into a container, and pure water was filled therein. The results are shown in Table 6.

As can be seen from Table 6, no metal was eluted from Examples 13, 14, and 15. Further, from Comparative Examples 1 and 2, Sn or Pb contained in the stabilizer was eluted. Further, the surface resistivity of the samples of Examples 13, 14 and 15 which had been subjected to the dissolution test was measured again, but there was no change.

In addition, the same test was performed on the PVC resin using the stabilizer other than the above examples, and substantially the same result was obtained.

(Effects of the Invention) As described above, the chlorine-containing resin molded product of the present invention contains Pb and Sn.
A base layer portion of a chlorine-containing resin containing a metal compound such as a stabilizer, and a non-metal coating layer integrally laminated on one surface thereof,
Since it is composed of an antistatic or conductive coating layer integrally laminated on the other surface, the nonmetal coating layer is used when it is used for related devices such as semiconductors, biochemistry, medical care, pharmaceuticals, foods, etc. If the non-metal coating layer is used on the side in contact with acid or pure water, that is, on the surface treated with acid or pure water, or on the side where the above equipment is installed when used as an exterior material, There is no concern that metal elements will elute or dissolve in the treatment liquid, etc., and the antistatic or conductive coating layer on the other surface will give an antistatic effect, so dust and dirt in the atmosphere will be adsorbed. In addition, the base layer maintains the inexpensive and tough properties inherent in chlorine-containing resins and the excellent chemical resistance and secondary processability, and these properties are summed up to be suitable for equipment related to the above applications. Will increase dramatically. The chlorine-containing resin molded product of the present invention having such excellent performance is extremely useful.

[Brief description of drawings]

FIG. 1 is a partially cutaway vertical sectional view showing an embodiment of the molded product of the present invention, and FIG. 2 is a partially enlarged perspective view showing an application example thereof. (Description of symbols) 1 ... Base layer, 2 ... Non-metal coating layer, 3 ... Antistatic or conductive coating layer.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display area C08L 27/06

Claims (1)

[Claims] 1. A base layer portion of a chlorine-containing resin stabilized by a metal stabilizer and any one selected from non-metal stabilizers such as aminocarboxylic acid, hydrazide, epoxy compound and organic phosphite, or A non-metal coating layer made of a chlorine-containing resin stabilized by several kinds and laminated on one surface of the base layer portion, and an antistatic or conductive material laminated directly on the other surface of the base layer portion or through a resin film. Molded chlorine-containing resin product with a hydrophilic coating layer.