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Method for preparing rubber-reinforced thermoplastic resin, and rubber-reinforced themoplastic resin composition using the same

A technology for thermoplastic resins and compounds, applied in the field of preparing rubber-reinforced thermoplastic resins and rubber-reinforced thermoplastic resin compositions, can solve problems such as heat sealability not mentioned

Active Publication Date: 2006-06-28
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, these said disclosed inventions only relate to good impact resistance, workability and gloss, but do not mention heat sealability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Add 20 parts by weight of rubber latex with an average particle diameter of 0.095 μm and a gel content of 83 percent by weight, 35 parts by weight of rubber latex with an average particle diameter of 0.31 μm and 75 percent by weight of Rubber latex with gel content, 120 parts by weight of deionized water, 3.0 parts by weight of acrylonitrile, 12 parts by weight of styrene, 0.5 parts by weight of potassium abietate and 0.1 part by weight of tertiary lauryl mercaptan. Then, the temperature of the reactor was increased.

[0045] When the internal temperature of the reactor reached 45°C, by adding 0.1 parts by weight of tert-butyl hydroperoxide and 0.25 parts by weight of an activator comprising glucose, sodium pyrophosphate and ferrous sulfate in a weight ratio of 50 / 40 / 1 Polymerization begins. Then, the temperature of the reactor was raised to 70°C within 60 minutes. The polymerization conversion here was 73%. (step a)

[0046] In a separate mixing device, the emulsio...

Embodiment 2

[0053] Add 20 parts by weight of rubber latex with an average particle diameter of 0.12 μm and a gel content of 89 percent by weight, 40 parts by weight of rubber latex with an average particle diameter of 0.30 μm and 74 percent by weight of Rubber latex with gel content, 120 parts by weight of deionized water, 3.5 parts by weight of acrylonitrile, 11.5 parts by weight of styrene, 0.5 parts by weight of potassium abietate and 0.1 part by weight of tertiary lauryl mercaptan. Then, the temperature of the reactor was increased.

[0054] When the internal temperature of the reactor reached 45°C, by adding 0.1 parts by weight of tert-butyl hydroperoxide and 0.25 parts by weight of an activator comprising glucose, sodium pyrophosphate and ferrous sulfate in a ratio of 50 / 40 / 1 Polymerization begins. Then, the temperature of the reactor was raised to 70°C within 60 minutes. The polymerization conversion here was 73%. (step a)

[0055] In a separate mixing device, an emulsion was p...

Embodiment 3

[0059] A rubber-reinforced thermoplastic resin was prepared in the same manner as in Example 1, except that cumene hydroperoxide was used as a peroxide initiator in step b).

[0060] The graft ratio of the thus obtained rubber-reinforced thermoplastic resin was 56.

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PUM

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Abstract

The present invention relates to a method for preparing a rubber-reinforced thermoplastic resin, a rubber-reinforced thermoplastic resin prepared by the same method, and a rubber-reinforced thermoplastic resin composition using the same, wherein the rubber-reinforced thermoplastic resin has excellent heat-sealability and thermal stability maintaining good mechanical properties. More specifically, the present invention relates to a method for preparing a rubber-reinforced thermoplastic resin, a rubber-reinforced thermoplastic resin prepared by the same method, and a rubber-reinforced thermoplastic resin composition using the same characterized by, on the basis of 100 weight parts of total monomer used to prepare graft copolymer, using the mixture comprising 10 to 30 weight parts of a rubber latex having average particle diameter of 0.08 to 0.16 mum and gel content of 65 to 95 weight % and 15 to 45 weight parts of a rubber latex having average particle diameter of 0.26 to 0.34 mum and gel content of 55 to 85 weight %, keeping the weight ratio of vinyl cyanide compound including acrylonitrile to aromatic vinyl compound including styrene from 16 / 84 to 24 / 76 as a monomer composition grafted on rubber latex, and adjusting the graft ratio of graft copolymer, i.e. rubber-reinforced thermoplastic resin, from 25 to 65.

Description

technical field [0001] The present invention relates to a method for producing a rubber-reinforced thermoplastic resin and a rubber-reinforced thermoplastic resin produced by the method, wherein the rubber-reinforced thermoplastic resin has excellent heat sealability and thermal stability maintaining good mechanical properties. Background technique [0002] Acrylonitrile-butadiene-styrene resins, in which a rubber component is added to improve the impact resistance of acrylonitrile-styrene copolymers, are widely used as monitor casings, game console casings, home appliances, office computers, and car lamp covers etc., the acrylonitrile-butadiene-styrene resin has good dimensional stability, processability and chemical resistance. [0003] In the preparation of acrylonitrile-butadiene-styrene resin, in order to disperse the rubber component in the acrylonitrile-styrene copolymer, a solution is carried out using the rubber component dissolved in acrylonitrile and styrene as mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/24C08L55/02
CPCC08F279/02C08F279/04C08F285/00C08F291/02C08L51/04C08L55/02C08F212/10C08L2666/02C08L2666/04C08F2/24
Inventor 李俊汰俞根勋李灿弘金贤度金昶默
Owner LG CHEM LTD
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