JP5678316B2 - Thermoplastic resin composition having hydrophilicity - Google Patents

Description

  The present invention relates to a thermoplastic resin composition having hydrophilicity, and more particularly to a thermoplastic resin composition containing a hydrophilicity imparting component and imparting a long-term stable and semipermanent hydrophilicity. is there.

  According to the present invention, even a hydrophobic polymer material is required to be wetted with water, for example, a material for watering equipment in a house such as a kitchen or bathroom, a water-filled container such as a bottle, The present invention provides a hydrophilic thermoplastic resin composition suitable for use in food packaging films, building materials, and applications such as automobiles.

  Some examples of thermoplastic resins include high-density polyethylene, low-density polyethylene, ultra-high molecular weight polyethylene, linear low-density polyethylene, and other copolymers with ethylene, polypropylene, polystyrene, polystyrene. It is generally excellent in mechanical strength, moldability, chemical resistance, transparency, etc. over many limbs such as copolymers, fluoropolymers, ABS resins, etc. Lipophilic, that is, hydrophobic. In other words, these resins are often inconvenient for use in various applications because of their weak interaction with water, low affinity, and the property of being incompatible with water.

  Therefore, in order to impart hydrophilicity to such a thermoplastic resin, it is necessary to add a hydrophilic component to the resin, or to coat the resin surface with a hydrophilic component, or to make the resin surface hydrophilic. It is necessary to perform processing. Conventionally, as a method of imparting hydrophilicity to a thermoplastic resin exhibiting hydrophobicity, a method of adding a surfactant, a method of adding a permanent antistatic agent, and the like have been proposed. Methods for processing by charging such as corona discharge processing, glow discharge processing, and plasma discharge processing are known.

  However, the hydrophilicity of the resin obtained by the method of adding the surfactant has a problem in its sustainability, and the method of adding a permanent antistatic agent does not have a sufficient hydrophilic performance itself. There is a drawback that a desired effect cannot be obtained.

  On the other hand, the above plasma discharge treatment or the like is a method usually adopted as an improvement in printability, adhesiveness, coating property, etc. by hydrophilic treatment of the hydrophobic surface of the resin, and is obtained by the hydrophilic treatment. The hydrophilicity of the resin surface is inevitable to be inferior in sustainability.

Under such circumstances, as the polyolefin composition imparted with hydrophilicity, (i) 20 to 99% by weight of ethylene units, (b) 80 to 1% by weight of polyalkylene glycol mono (meth) acrylate units, and (c) A polyolefin composition comprising an ethylene copolymer comprising 0 to 40% by weight of other ethylenically unsaturated monomer units and containing a hydrophilicity-imparting component has been proposed (JP-A-2-248443).
According to such prior art, copolymers of ethylene and polyalkylene glycol mono (meth) acrylates are described as hydrophilicity-imparting agents, which are intrinsic viscosity (η) measured at 75 ° C. in xylene. Is a low viscosity of 0.07 to 0.40 dl / g, and it is disclosed that it is a monoester obtained by reacting one (meth) acrylic acid with polyalkylene glycol.
However, even a resin composition containing such a hydrophilicity-imparting agent still has insufficient hydrophilic sustainability, so it is eager to realize a long-term stable hydrophilic sustainable thermoplastic resin. It has been.
JP-A-2-248443

  Therefore, according to the conventional development situation, in view of the fact that the developed technology that has already been proposed cannot secure the hydrophilicity with the sufficient long-term stability as described above, the problem of the present invention is that it has a high degree of hydrophilicity. And providing a thermoplastic resin imparted with a stable hydrophilic property over a long period of time.

  Therefore, in view of the development status of conventional hydrophilic thermoplastic resins, the present inventor has intensively studied to solve the above problems, and as a result, blends an acrylic-modified glycol polymer with the thermoplastic resin. In view of this, it was noted that a thermoplastic resin having hydrophilicity was obtained, and it was understood that the hydrophilic performance was excellent in long-term stability.

Furthermore, the thermoplastic resin composition obtained by blending a composition of acrylic-modified glycol and silica obtained by blending silica with the acrylic-modified glycol-based polymer into a thermoplastic resin has excellent long-term stability. It was found to have hydrophilicity.
The present invention has been completed based on such findings.

Thus, according to the present invention,
There is provided a hydrophilic thermoplastic resin composition comprising 1 to 50 parts by weight of an acrylic-modified glycol polymer and 99 to 50 parts by weight of a thermoplastic resin.

Moreover, according to the present invention,
Hydrophilic thermoplastic resin composition comprising 1 to 50 parts by weight of a composition comprising 50 to 90% by weight of an acrylic-modified glycol polymer and 50 to 10% by weight of silica and 99 to 50 parts by weight of a thermoplastic resin. Things are provided.

  As described above, the first invention is a resin composition obtained by blending an acrylic modified glycol polymer with a thermoplastic resin, and includes 1 to 50 parts by weight of an acrylic modified glycol polymer and 99 to 50 parts by weight of a thermoplastic resin. The second invention is a composition obtained by blending silica into the acrylic-modified glycol-based polymer, the acrylic-modified glycol-based composition. Hydrophilic thermoplastic resin composition comprising 50 to 90% by weight of polymer and 1 to 50% by weight of composition containing 50 to 10% by weight of silica and 99 to 50 parts by weight of thermoplastic resin However, further preferred embodiments include the following 1) to 7) and 8). Said 1) -7) is about a hydrophilic thermoplastic resin composition, 8) provides the manufacturing method of the said hydrophilic thermoplastic resin composition.

1) The hydrophilic thermoplastic resin composition, wherein the acrylic-modified glycol-based polymer is an acrylic-modified polyalkylene glycol.

2) The acrylic modified glycol polymer is a polyalkylene glycol and acrylic
The hydrophilic thermoplastic resin composition, which is a reaction product with an acid compound or a methacrylic acid compound.

3) The acrylic modified glycol polymer is polyethylene glycol or polypropylene.
The hydrophilic thermoplastic resin composition, which is a reaction product of propylene glycol and an acrylic acid compound or a methacrylic acid compound.

4) The hydrophilic thermoplastic resin composition, wherein the acrylic-modified glycol polymer is polyalkylene glycol diacrylate or polyalkylene glycol dimethacrylate.

5) General formula of polyalkylene glycol moiety of the acrylic modified glycol polymer
(1) The said hydrophilic thermoplastic resin composition whose value of n is an integer of 5-17.

6) In the general formula (1) of the polyalkylene glycol portion of the polyalkylene glycol diacrylate or polyalkylene glycol dimethacrylate, the value of n is 7 to
A hydrophilic thermoplastic resin composition which is an integer of 14.

7) The hydrophilic thermoplastic resin composition, wherein an effective amount of hydrophilic improvement of the silica is 10 to 50% by weight with respect to 100% by weight of the total amount of the methacryl-modified glycol polymer and the silica.

8) The hydrophilic thermoplastic resin composition, wherein the effective amount of the silica for improving hydrophilicity is 20 to 45% by weight with respect to 100% by weight of the total amount of the acrylic-modified glycol polymer and the silica.

9) The thermoplastic resin is at least one polymer material selected from the group consisting of high-density polyethylene, low-density polyethylene, ultrahigh molecular weight polyethylene, polypropylene, polystyrene, styrene copolymer, and ABS resin. The hydrophilic thermoplastic resin composition.

10) An acrylic modified glycol-based polymer, silica and a thermoplastic resin, and at least one additive selected from the group consisting of an antioxidant, a light stabilizer, a heat stabilizer and an ultraviolet absorber. A hydrophilic thermoplastic resin composition comprising:

11) Step (1) for preparing a hydrophilicity-imparting composition obtained by blending the acrylic-modified glycol-based polymer and silica, and the hydrophilicity-imparting composition obtained in the step (1) as a thermoplastic resin. Step of melt kneading (2)
The manufacturing method of the hydrophilic thermoplastic resin composition which consists of these.

According to the present invention, there is provided a thermoplastic resin composition which is obtained by blending an acrylic-modified glycol-based polymer with a thermoplastic resin and has a hydrophilic property with excellent long-term stability as shown in Examples described later. be able to.
In addition, a thermoplastic composition obtained by blending a specific proportion of silica with the acrylic-modified glycol polymer can further improve the long-term stability of hydrophilic performance.
Therefore, according to the present invention, even a hydrophobic polymer material is required to be wetted with water, such as a kitchen, a bathroom material, a water filling container such as a bottle, a building material, and a member of an automobile. It is possible to provide a thermoplastic resin having hydrophilicity and excellent long-term stability that is useful as a material that needs to maintain transparency.

Acrylic-modified glycol-based polymer In the first and second inventions, the acrylic-modified glycol-based polymer constituting the hydrophilic thermoplastic resin composition is a reaction product of a polyalkylene glycol and an acrylic acid compound or a methacrylic acid compound, The following general formula (1);

And a polyalkylene glycol moiety represented by the following general formula (2):



The monoester compound or the diester compound is included, and the diester compound is particularly preferable from the viewpoint of improving the hydrophilicity.

In the general formulas (1) and (2),
R1 and R2 are each a methyl group or a hydrogen atom, and n is an integer of 2 to 17, preferably 5 to 15.
More preferably, it is 5-14, Most preferably, it is the range of 10-14. When the value of n is as small as 2 or less, sufficient hydrophilicity imparting effect cannot be obtained, and when it exceeds 17, there is a possibility that solubility problem may occur, and sufficient hydrophilicity imparting effect cannot be obtained. .

  Specific examples of the acrylic-modified glycol-based polymer are acrylic-modified polyalkylene glycols, and more specific examples include acrylic-modified polyethylene glycol, acrylic-modified polypropylene glycol, and acrylic-modified polybutylene glycol. For example, polyethylene glycol diacrylate, polyethylene glycol dimethacrylate, polypropylene glycol diacrylate, polypropylene glycol dimethacrylate and the like are preferable. More specifically, polypropylene glycol diacrylate having a value of n of 10 to 14 is preferred.

  The content of the acrylic-modified glycol-based polymer is 1 to 50 parts by weight based on the total weight with respect to 100 parts by weight of the hydrophilic thermoplastic resin composition. The preferred content is 2 to 40 parts by weight, but it is 3 to 30 parts by weight, particularly 4 to 4 parts from the viewpoint of developing the thermoplastic resin in the various uses described above and balancing the hydrophilicity and other properties. 25 parts by weight is preferred. If the content of the acrylic-modified glycol-based polymer does not reach 1 part by weight, the effect on hydrophilicity cannot be achieved. On the other hand, if the content exceeds 50 parts by weight, the hydrophilic effect is not further improved even if the amount is increased. In addition, since the ratio of the thermoplastic resin is reduced, the mechanical strength and other performances are lowered, and there is a possibility that the performance of the thermoplastic resin as a material for use is lacking.

Next, in the second invention, silica (SiO2), which is a component constituting the hydrophilic thermoplastic resin composition, is usually used in various applications and can be crystalline or crystalline as long as the object of the present invention can be achieved. Anything amorphous can be used. Further, the water-containing form SiO 2 · nH 2 O may be used. In general, silica can be used by appropriately treating a substance obtained by adding an appropriate acid to an aqueous solution of a soluble silicon salt. A preferred form of use of silica as a constituent component of the hydrophilic thermoplastic resin composition according to the present invention is a granular material.
The content of silica may be an effective amount for improving hydrophilicity, specifically, 10 to 50% by weight, preferably 15 to 40% by weight, where the total amount with the acrylic-modified glycol polymer is 100% by weight, More preferably, it is 20 to 35% by weight. If the silica content does not reach 10% by weight, the hydrophilic long-term stability is lacking. On the other hand, if it exceeds 50% by weight, there is a possibility that the effect of improving the hydrophilicity is lowered.

Accordingly, the content of the acrylic-modified glycol-based polymer is 50 to 90% by weight, preferably 60 to 85% by weight, based on the total amount, according to the increase or decrease of the silica content.
Thus, a hydrophilic thermoplastic resin composition comprising 1 to 50 parts by weight of a composition obtained by blending silica with an acrylic-modified glycol polymer and 99 to 50 parts by weight of a thermoplastic resin is provided.

Thermoplastic resin The thermoplastic resin that is a constituent of the thermoplastic resin composition with hydrophilicity according to the present invention is mainly a thermoplastic resin, such as polyethylene, polypropylene, polybutene-1, polystyrene, etc. A hydrocarbon polymer can be mentioned. As the polyethylene, high density polyethylene (HDPE), low density polyethylene (LDPE), ultra high molecular weight polyethylene, cross-linked polyethylene, linear low density polyethylene, and other copolymers with ethylene, such as ethylene-propylene copolymer, are used. be able to.

Also, other polyolefins, styrene copolymers (styrene-acrylonitrile copolymer (SAN), acrylonitrile-butadiene-styrene copolymer (ABS), AS
Resin, ABS / PC alloy, etc.).

Other additives
In the hydrophilic thermoplastic resin composition according to the present invention, various additives, for example, an antioxidant, a light stabilizer, and the like, as long as they do not impair the effects of the hydrophilic thermoplastic resin composition according to the present invention. Dyes, pigments, etc. can be blended.

Examples of the antioxidant include 2,6-di-t-butyl-4-methylphenol, n-octadecyl-3- (3,5′-di-t-butyl-4-hydroxyphenyl) propionate, tetrakis [ Methylene-3- (3,6-di-t-butyl-4-hydroxyphenyl) propionate] phenolic antioxidants such as methane, dilauryl-3,3′-thiodipropionate, pentaerythritol tetrakis (3- And phosphorus antioxidants such as sulfur antioxidants such as lauryl thiopropionate), trisnonylphenyl phosphite, distearyl pentaerythritol diphosphite.
As the light stabilizer, benzotriazole-based UV absorbers such as 2- (2′-hydroxy-5′methylphenyl) benzotriazole, benzophenone-based UV absorbers such as 2,4-dihydroxybenzophenone, etc. are used. Bis- [2,2,6,6-tetramethyl-4-piperidinyl] sebacate, tetrakis (2,2,6,6-tetramethyl-4-piperidinyl) -1,2,3 4-butanetetracarboxylate or the like is used.
As the antistatic agent, an anionic, cationic, nonionic or amphoteric surfactant is used by kneading or surface coating.

Production method of hydrophilic thermoplastic resin According to the first invention, a hydrophilic thermoplastic resin composition is provided by blending an acrylic-modified glycol polymer and a thermoplastic resin.

  The method for producing such a hydrophilic thermoplastic resin composition is not particularly limited, and the component A is prepared by mixing the acrylic modified glycol polymer (component A) and the thermoplastic resin (component B) under the melting temperature condition. A method of kneading for a predetermined time until is dispersed in the component B is employed. The melt-kneading temperature is determined by the resin used for kneading, but a temperature condition of 200 to 250 ° C. is adopted for hydrocarbon resins such as polypropylene resin.

Moreover, according to 2nd invention, a silica (component C) is further mix | blended with the said component A and component B. FIG. Specifically, the step of preparing the composition containing component A and component C by blending component C with component A, and the thermoplastic resin composition by further blending the composition obtained in the step with component B A method for producing a hydrophilic thermoplastic resin composition comprising two steps of a process for preparing a product, or a hydrophilic thermoplastic resin composition comprising a single step comprising simultaneously blending component A, component B and component C Any of the methods may be adopted, but the latter method is preferable in terms of efficiency.
On the other hand, when component A and component C are in a small proportion with respect to component B, particularly when component C is small, by blending component C with component A in advance and blending the resulting composition with component B, It is easy to uniformly disperse component A and component C in component B in a short time.
According to the method for producing a hydrophilic thermoplastic resin composition according to the present invention, it is particularly possible to efficiently achieve hydrophilicity of hydrocarbon resins such as polyethylene and polypropylene.

Next, the present invention will be described in more detail with reference to examples and comparative examples. However, the present invention is not limited to the examples.
In addition, materials such as thermoplastic resins, acrylic-modified glycol polymers, and silica used in Examples and the like were those described below, and hydrophilic performance was also evaluated using the test methods described below.
In Examples and the like, “%” and “parts” represent “% by weight” and “parts by weight”, respectively.

Material Thermoplastic resin Polypropylene resin (Prime Polymer J707G)
Low density polyethylene resin (LDPE)
(M6545 manufactured by Asahi Kasei Chemicals)
ABS resin (Stylac 121 manufactured by Asahi Kasei Chemicals)
Acrylic Modified Glycol Polymer Acrylic Modified Polypropylene Glycol (Photo-curable resin “Aronix M270” manufactured by Toagosei Co., Ltd. [polypropylene glycol diacrylate] n≈12)
Antistatic agent (Pelestat 300 manufactured by Sanyo Chemical Industries): For polyolefin Antistatic agent (Pelestat NC6321 manufactured by Sanyo Chemical Industries): For ABS

Evaluation Method Hydrophilic Evaluation As an evaluation method, 50 μl of water droplets were dropped on the evaluation plates prepared in the following Examples and Comparative Examples, and immediately after dropping, 1 minute, 10 minutes, and 30 minutes using a contact angle meter. The contact angle after and after 45 minutes was measured over time. The measurement temperature was maintained at 23 ° C.
A CA-DT type manufactured by Kyowa Science Co., Ltd. was used as the contact angle meter.

Reference example 1
Acrylic-modified polypropylene glycol is blended into the polypropylene resin at the ratio shown in Table 1, this composition is supplied to an extruder, melt-kneaded at a temperature of 220 to 240 ° C., and the acrylic-modified polypropylene glycol is dispersed in the polypropylene resin. A pellet-shaped polypropylene resin composition was prepared.
Next, this pellet-like polypropylene resin composition was supplied to an injection molding machine equipped with a flat plate mold, and injection molded at 220 to 240 ° C. to produce a molded product of 50 × 50 × 2 mm. This molded product was used as an evaluation plate, and the change with time of the contact angle of the water droplet was measured by the contact angle measurement method.
The measurement results are shown in Table 1.

Reference example 2
Acrylic-modified polypropylene glycol is blended with polypropylene resin in the proportions shown in Table 1, the composition is supplied to an extruder, dissolved and kneaded at a temperature of 220 to 240 ° C., and acrylic-modified polypropylene glycol is dispersed in the polypropylene resin. A pelletized polypropylene resin composition was prepared.
A pellet-shaped polypropylene resin composition was injection-molded by the same method as described in Reference Example 1 to produce a molded product, which was used as an evaluation plate, and the change with time of the contact angle of water droplets was determined according to the hydrophilicity evaluation method. It was measured. The measurement results are shown in Table 1.

Reference example 3
Pellet-shaped polypropylene in which acrylic-modified polypropylene glycol is blended with polypropylene in the proportions shown in Table 1, and the resulting composition is supplied to an extruder, dissolved and kneaded at a temperature of 220 to 240 ° C., and acrylic-modified polypropylene glycol is dispersed. A resin composition was prepared.
The pelletized polypropylene resin composition was injection-molded by the same method as described in Reference Example 1 to produce an evaluation plate. The evaluation results of the evaluation plate are shown in Table 1.

Example 4
A pellet-shaped polypropylene resin composition was prepared under the same conditions and the same operation as in Reference Example 1 except that acrylic modified polypropylene glycol and silica were blended into the polypropylene resin in the proportions shown in Table 2, and the hydrophilic performance was similarly evaluated. . The evaluation results are shown in the same table.

Example 5
Except that acrylic modified polypropylene glycol and silica were blended into the polypropylene resin in the proportions shown in Table 2, a pellet-shaped polypropylene resin composition was prepared under the same conditions and the same operation as in Reference Example 2, and the hydrophilic performance was similarly evaluated. did. The evaluation results are shown in the same table.

Example 6
A pellet-shaped polypropylene resin composition was prepared under the same conditions and the same operation as in Example 3 except that acrylic modified polypropylene glycol and silica were blended into the polypropylene resin in the proportions shown in Table 2, and the hydrophilic performance was similarly evaluated. . The evaluation results are shown in the same table.

Reference Example 7
Acrylic-modified polypropylene glycol is blended in a low-density polyethylene resin (hereinafter “LDPE”) in the proportions shown in Table 3, the composition is supplied to an extruder, and melt blended by the same method as described in Reference Example 1. After preparing a pellet-like LDPE resin, an evaluation plate was prepared and subjected to hydrophilicity evaluation by the same method as described in Reference Example 1. The results are shown in Table 3.

Example 8
A pellet-like LDPE resin was prepared under the same conditions and the same operation as in Reference Example 7 except that acrylic modified polypropylene glycol and silica were blended in the LDPE resin in the proportions shown in Table 3, and subjected to evaluation of hydrophilic performance. The evaluation results are shown in the same table.

Reference Example 9
Acrylic-modified polypropylene glycol was blended with the ABS resin in the ratio shown in Table 4, and the composition was supplied to an extruder, melt-kneaded, and a pellet-like ABS resin composition in which the acrylic-modified polypropylene glycol was dispersed was prepared. An evaluation plate was prepared from the pellet-like ABS resin composition by the same method as described in Reference Example 1, and the change with time of the contact angle of the water droplets was measured and subjected to hydrophilicity evaluation. The results are shown in Table 4.

Example 10
A pellet-shaped ABS resin composition was prepared under the same conditions and the same operation as in Reference Example 9 except that acrylic modified polypropylene glycol and silica were blended in the pellet-shaped ABS resin in the proportions shown in Table 4, and similarly hydrophilic performance was obtained. evaluated. The evaluation results are shown in the same table.

Comparative Example 1
Only a polypropylene resin was made into a pellet-like polypropylene resin by the same method as described in Reference Example 1, and injection molded to prepare an evaluation plate. The evaluation results are shown in Table 2.

Comparative Example 2
An antistatic agent is blended in a polypropylene resin, melt-kneaded by the same method as described in Reference Example 1 to prepare a pellet-shaped polypropylene resin composition, and then an evaluation plate is produced by injection molding to evaluate hydrophilic performance. It was used for. The evaluation results are shown in Table 2.

Comparative Example 3
Only the LDPE resin was supplied to the extruder, melt-kneaded by the same method as described in Reference Example 1 to prepare a pellet-like LDPE resin composition, and then an evaluation plate was produced by injection molding. The evaluation results are shown in Table 3.

Comparative Example 4
Only the ABS resin was supplied to the extruder, and a pellet-shaped ABS resin composition was prepared by the same method as described in Reference Example 1 and then subjected to injection molding to prepare an evaluation plate. The evaluation results are shown in Table 4.

From the results of the above Examples, Reference Examples and Comparative Examples, a thermoplastic resin composition having excellent long-term stability of hydrophilic performance is prepared by blending the specific acrylic-modified polypropylene glycol according to the present invention with polypropylene resin or the like. In addition, the combined use of acrylic-modified polypropylene glycol and silica, such as polypropylene resin, LDPE resin, ABS resin, etc. having hydrophilic performance with excellent long-term stability as shown by the change with time of the contact angle of water droplets A hydrophilic thermoplastic resin composition can be prepared.

  In particular, according to the comparison between the hydrophilic initial performance and the hydrophilic durability of the polypropylene resin composition of Comparative Example 1, the hydrophilicity and hydrophilic durability of the hydrophilic polypropylene resin composition of Example 5 For the hydrophilic polypropylene resin composition of No. 5, the contact angle immediately after dropping was 80 °, and after 45 minutes it was reduced to 43 °, whereas according to the polypropylene resin composition of Comparative Example 1, it was dropped The contact angle immediately after is 96 °, and it remains at 84 ° even after 45 minutes, and it is clear that acrylic-modified polypropylene glycol and silica have a remarkable effect on hydrophilicity improvement.

In addition, when only acrylic-modified polypropylene glycol that does not use silica is blended in polypropylene resin, as shown in Reference Example 2, it is excellent in initial hydrophilic performance and long-term stability of hydrophilic performance as compared with Comparative Example 1. It is shown.
The remarkable effect of the present invention is also apparent from the comparison between Reference Example 7 and Comparative Example 3 and the comparison between Reference Example 9 and Comparative Example 4.

Claims (5)

Hydrophilic thermoplastic resin composition comprising 1 to 50 parts by weight of a composition comprising 50 to 90% by weight of an acrylic-modified glycol polymer and 50 to 10% by weight of silica and 99 to 50 parts by weight of a thermoplastic resin. A thing,
The thermoplastic resin is a hydrocarbon polymer selected from the group consisting of polyethylene, polypropylene, polybutene and polystyrene, a polymer selected from the group consisting of acrylonitrile-butadiene-styrene copolymer and styrene-acrylonitrile copolymer Alternatively , a hydrophilic thermoplastic resin composition, which is a polymer material made of a copolymer .   The hydrophilic thermoplastic resin composition according to claim 1, wherein the acrylic-modified glycol-based polymer is polyalkylene glycol diacrylate or polyalkylene glycol dimethacrylate. The hydrophilic thermoplastic resin composition according to claim 1, wherein the value of n in the general formula (1) of the polyalkylene glycol moiety of the acrylic-modified glycol-based polymer is an integer of 5 to 17. 2. The hydrophilic thermoplastic resin composition according to claim 1, wherein a content of the silica is 20 to 45% by weight based on a total amount of the acrylic-modified glycol polymer and the silica. Step (1) of preparing a hydrophilicity-imparting composition comprising 50 to 90% by weight of acrylic-modified glycol polymer and 50 to 10% by weight of silica
And 1 to 50 parts by weight of the hydrophilicity-imparting composition obtained in the step (1)
A thermoplastic resin, a hydrocarbon-based polymer selected from the group consisting of polyethylene, polypropylene, polybutene and polystyrene, an acrylonitrile-butadiene-styrene copolymer and a polymer selected from the group consisting of styrene-acrylonitrile copolymers Step (2) of melt-kneading 99 to 50 parts by weight of a polymer material made of a coalescence or copolymer
The manufacturing method of the hydrophilic thermoplastic resin composition which consists of these.