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Rubber modified syrene resin component

A styrene-based resin and styrene-based technology, which is applied in the field of rubber-modified styrene-based resin compositions, can solve problems such as inability to obtain conformity, and achieve the effects of high adhesion and high drop impact strength

Active Publication Date: 2014-07-09
CHI MEI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For example, Japanese Patent No. 2002-322329 discloses a rubber-modified styrene resin used in the coating field, adding fatty acid glycerides to the rubber-modified styrene resin to improve the surface properties and coating properties of the resin molded body; but This rubber-modified styrene-based resin cannot obtain a rubber-modified styrene-based resin that meets the needs of the industry and has good physical properties such as no silver streaks.

Method used

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  • Rubber modified syrene resin component
  • Rubber modified syrene resin component
  • Rubber modified syrene resin component

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0043] [Preparation Example 1] The first styrene-acrylonitrile copolymer (A 1 ) and the first rubbery graft copolymer (B 1 ) preparation

[0044] The compounds in the following table were mixed in proportion and reacted at a reaction temperature of 65°C for 12 hours to obtain a synthetic rubber latex with a conversion rate of 94%, a solid content of 40%, and a weight average particle size of 0.1 μm.

[0045] Element

[0046] Mix the compounds in the following table in proportion and react at a reaction temperature of 75°C for 5 hours to prepare a carboxylic acid group-containing polymer coagulant with a conversion rate of 95% and a pH value of 6.0.

[0047] Element

[0048] Utilize the polymer coagulant (dry weight) containing carboxylic acid group of 3 weight parts to agglomerate the synthetic rubber latex (dry weight) of 100 weight parts afterwards, the pH value of the agglomerated rubber latex obtained is 8.5, weight average The particle size is 0.3 ...

preparation example 2

[0052] [Preparation example 2] the second styrene-acrylonitrile copolymer (A 2 ) and the second rubbery graft copolymer (B 2 ) preparation

[0053] The synthetic rubber latex (rubber particle weight average particle size: 0.1 μm) obtained in the aforementioned Preparation Example 1 was directly used for graft polymerization reaction with the formula in the following table.

[0054] Element

[0055] Obtain the second styrene-acrylonitrile copolymer (A 2 ) and the second rubbery graft copolymer (B 2 ). Wherein, the second rubber-like graft copolymer (B 2 ) is a graft copolymer of styrene and acrylonitrile grafted on synthetic rubber latex, and the weight average particle diameter of its rubber particles is 0.1 μm; and the second styrene-acrylonitrile copolymer (A 2 ) is a copolymer of styrene and acrylonitrile not grafted on synthetic rubber latex.

preparation example 3-1

[0056] [Preparation Example 3-1] The third styrene-acrylonitrile copolymer (A 3 )

[0057] Put 68% by weight of styrene and 32% by weight of acrylonitrile at a rate of 12kg / hr in a fully mixed reactor with a capacity of 45L and a stirrer with the inner temperature kept at 120°C, and then mix and react . Azobisisobutyronitrile, ethylene distearamide and tert-dodecylmercaptan are added to the reaction at a speed of 3.0g / hr. After the reaction, a reaction solution with a solid content of 55% can be obtained. After the reaction solution was removed by a devolatilization device to remove volatile components, the third styrene-acrylonitrile copolymer (A 3 ) has a weight average molecular weight of 86,000.

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Abstract

The present invention relates to a rubber modified syrene resin component. The rubber modified syrene resin component comprises: rubber modified syrene resin composed of a continuous phase formed by a styrene-acrylonitrile copolymer (A) and a dispersed phase formed by a rubber-like grafted copolymer (B); a phenol compound; and a thioether compound. The styrene-acrylonitrile copolymer (A) comprises a third styrene-acrylonitrile copolymer with the weight average molecular weight of 75000-130000. The rubber-like grafted copolymer (B) consists of a first rubber-like grafted copolymer with the weight average particle diameter of 0.21-0.5[mu]m and a second rubber-like grafted copolymer with the weight average particle diameter of 0.05-0.2[mu]m. The total content of oligomer in the rubber modified syrene resin component is within the range from 500ppm to 5000ppm. The content of the each component is as defined in the specification and claims.

Description

technical field [0001] The present invention relates to a rubber-modified styrene-based resin composition, in particular to a composition with no silver streaks and a low number of surface holes, and has high drop impact strength after painting and high adhesion after painting. Rubber-modified styrenic resin composition. Background technique [0002] Generally, plastic molded products used for electrical equipment and household goods contain mostly rubber-modified styrene-based resins, polycarbonate resins, and the like. Among them, the rubber-modified styrene resin, such as acrylonitrile-butadiene-styrene resin (abbreviated as ABS resin), has high surface hardness, good chemical resistance, good electrical properties and is easy to use. Forming and other excellent properties, and gradually being widely used in various plastic moldings. [0003] For example, Japanese Patent No. 2002-322329 discloses a rubber-modified styrene resin used in the coating field, adding fatty ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/12C08L51/04C08K5/00C08K5/13C08K5/36
Inventor 巫健仲郭俊廷
Owner CHI MEI CORP