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Thermoplastic resin composition and moldings thereof

A thermoplastic resin and composition technology, which is applied in the field of thermoplastic resin composition and its molded body, can solve the problems of impact resistance decline, vinyl chloride thermal decomposition, torque increase, etc., and achieve high impact resistance and good surface gloss.

Inactive Publication Date: 2012-11-28
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is also possible to improve the surface gloss by reducing its amount to some extent, this involves an increase in cost and is not preferred
Although the surface gloss can also be improved by increasing the molding temperature, there are many problems such as thermal decomposition of vinyl chloride
In addition, by using a large amount of a copolymer mainly composed of methyl methacrylate as a processing aid, the gloss can also be improved, but there is also a problem that the moment increases due to the increase in the melt viscosity, and the impact resistance decreases.
[0008] That is, among conventionally known methods, there is no method for making both gloss and impact resistance to a high level, as described above, whose requirements have been increasingly increased in recent years, and it is desired to find such a method.

Method used

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  • Thermoplastic resin composition and moldings thereof
  • Thermoplastic resin composition and moldings thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] (Preparation of Core Shell Polymer Composition A-1)

[0075] In the glass reactor that has the adding device of thermometer, stirrer, reflux cooler, nitrogen flow inlet, monomer and emulsifier, add the sodium lauryl sulfate aqueous solution 60g of deionized water 2500g, 1.0% by weight concentration, under nitrogen While stirring in the stream, the temperature was raised to 50°C.

[0076] Then, an emulsified solution consisting of 10 g of butyl acrylate (hereinafter referred to as BA), 10 g of styrene (hereinafter referred to as St), 4 g of a 10% by weight aqueous solution of sodium lauryl sulfate, and 60 g of deionized water was added thereto. monomer mixture.

[0077] Then, 0.5 g of cumene hydroperoxide was added thereto, and after 10 minutes, a mixed solution obtained by dissolving 0.02 g of disodium edetate and 0.006 g of ferrous sulfate heptahydrate in 25 g of deionized water was added and 30 g of sodium formaldehyde sulfoxylate with a concentration of 5% by weigh...

Embodiment 2

[0107] (Preparation of Core Shell Polymer Composition A-3)

[0108]In place of 26.6 g of PPG (12) DA, polytetramethylene glycol diacrylate (hereinafter referred to as PTMG (3) DA) whose main chain is a tetramethylene glycol chain with an average number of repeating units of 3 is used. ) except for 11.0 g, a core-shell polymer composition A-3 was prepared in the same manner as in Example 1. In addition, the volume average particle diameter of the acrylate polymer which is a core was 0.20 micrometers, and the polymerization conversion rate of the monomer component which forms an acrylate polymer was 99.6%. Through the above, the latex of the core-shell polymer composition A-3 composed of 75% by weight of the core component and 25% by weight of the shell component was obtained. In addition, the polymerization conversion rate of the total monomer component after completion|finish of polymerization was 99.9%.

[0109] (Preparation of White Resin Powder B-3 of Core Shell Polymer C...

Embodiment 3

[0118] (Preparation of Core Shell Polymer Composition A-4)

[0119] A core-shell polymer combination was prepared in the same manner as in Example 1, except that 11.0 g of PTMG (3) DA and 0.8 g of allyl methacrylate (hereinafter referred to as AMA) were used instead of 6.6 g of PPG (12) DA Object A-4. In addition, the volume average particle diameter of the acrylate polymer which is a core was 0.20 micrometers, and the polymerization conversion rate of the monomer component which forms an acrylate polymer was 99.6%. Through the above, the latex of the core-shell polymer composition A-4 composed of 75% by weight of the core component and 25% by weight of the shell component was obtained. Moreover, the polymerization conversion rate of the total monomer component after completion|finish of polymerization was 99.9%.

[0120] (Preparation of White Resin Powder B-4 of Core Shell Polymer Composition A-4)

[0121] Except having used the latex of the core-shell polymer composition ...

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Abstract

The invention provides a thermoplastic resin composition which can provide moldings having improved impact resistance and surface gloss, and moldings thereof. A thermoplastic resin composition which comprises 100 parts by weight of (a) a thermoplastic resin and 0.5 to 30 parts by weight of (b) a core-shell polymer composition, characterized in that: the core-shell polymer composition (b) is a composition prepared by polymerizing a shell-constituting component in the presence of cores obtained by polymerizing a monomer mixture which comprises 70 to 99.95 wt% of an alkyl acrylate wherein the alkyl group has 2 to 18 carbon atoms, 0.05 to 10 wt% of a polyfunctional monomer, and 0 to 20 wt% of a monomer copolymerizable therewith (with the total amount being 100wt%); and the polyfunctional monomer contains a compound having, in the molecule, multiple radical-polymerizable functional groups which are the same.

Description

technical field [0001] The present invention relates to a thermoplastic resin composition and a molded article capable of improving the strength and surface gloss of the molded article. Background technique [0002] Vinyl chloride-based resins are not only inexpensive but also excellent in mechanical strength, weather resistance, and chemical resistance, and are therefore used in various applications including building components and housing materials. However, since a single vinyl chloride-based resin does not have sufficient impact strength, a method of adding a graft copolymer obtained by an emulsion polymerization method or the like as an impact resistance improving agent is widely practiced at present. [0003] On the other hand, in recent years, in addition to strength properties such as impact resistance, the appearance of molded articles such as surface gloss has also been emphasized. In particular, in window frame molded articles, it is strongly desired to have both...

Claims

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Application Information

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IPC IPC(8): C08L101/00C08L27/06C08L51/00
CPCC08L51/003C08L27/06C08J3/128C08L51/00C08L101/00
Inventor 北山史延藤本耕平真部友也
Owner KANEKA CORP
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