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Method for preparing ASA-based graft copolymer, method for preparing thermoplastic ASA-based resin composition comprising same, and method for manufacturing ASA-based molded product

A technique of graft copolymer and preparation steps, which is applied in the fields of preparation of ASA graft copolymer, preparation of thermoplastic ASA resin composition containing it and preparation of ASA molded products, can solve the problem of being easily affected by ultraviolet light, ABS resin Poor weather resistance, chemical instability and other problems, to achieve the effect of excellent thermal stability, excellent appearance characteristics, high surface gloss

Active Publication Date: 2018-09-04
LG CHEM LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the rubber polymer used in the preparation of the ABS resin contains chemically unstable unsaturated bonds, there is a problem that the rubber polymer is easily aged by ultraviolet light and the weather resistance of the ABS resin is very poor.
[0005] In order to overcome such disadvantages, a method of adding a stabilizer capable of improving weather resistance when preparing a resin composition by extruding ABS resin has been proposed, but its effect is not enough and the problem of being easily affected by ultraviolet light remains unsolved

Method used

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  • Method for preparing ASA-based graft copolymer, method for preparing thermoplastic ASA-based resin composition comprising same, and method for manufacturing ASA-based molded product
  • Method for preparing ASA-based graft copolymer, method for preparing thermoplastic ASA-based resin composition comprising same, and method for manufacturing ASA-based molded product
  • Method for preparing ASA-based graft copolymer, method for preparing thermoplastic ASA-based resin composition comprising same, and method for manufacturing ASA-based molded product

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[0026] The preparation method of ASA graft copolymer according to the present invention comprises: a) seed preparation step, wherein make one or more selected from aromatic vinyl monomers, vinyl cyano monomers and alkyl acrylate monomers a monomer is polymerized to prepare a seed; b) a core preparation step, wherein an alkyl acrylate monomer is added and polymerized in the presence of the prepared seed to prepare a core; and c) a shell preparation step, wherein in the presence of the prepared core Adding one or more monomers selected from aromatic vinyl monomers and vinyl cyano monomers and an emulsifier and performing graft polymerization to prepare a shell, wherein the emulsifier contains Atomic polyfunctional carboxylic acid or salt thereof, and the average size of the prepared shell is 80 to 150 nm (larger than the average size of the core).

[0027] For example, the emulsifier may contain a polyfunctional carboxylic acid or a salt thereof having 20 to 60 carbon atoms, 20 ...

Embodiment 1

[0107] 1. Polymer Seed Preparation Steps

[0108] 6 parts by weight of butyl acrylate, 1.5 parts by weight of sodium lauryl sulfate, 0.04 parts by weight of ethylene glycol dimethacrylate, 0.02 parts by weight of allyl methacrylate, 0.1 parts by weight of Potassium and 45 parts by weight of distilled water were simultaneously added to the nitrogen-substituted reactor, the temperature was raised to 70° C., and 0.04 parts by weight of potassium persulfate was added to the reactor to initiate polymerization. Polymerization was then continued for 1 hour.

[0109] The average size of the rubbery polymer particles obtained after completion of the reaction was 40 nm.

[0110] 2. Polymer core preparation steps

[0111] The butyl acrylate of 44 parts by weight, the sodium lauryl sulfate of 0.5 parts by weight, the ethylene glycol dimethacrylate of 0.2 parts by weight, the allyl methacrylate of 0.2 parts by weight, the distilled water of 30 parts by weight and 0.05 parts by weight of...

Embodiment 2

[0121] Except using an emulsion containing 0.4 parts by weight of mixed emulsifier FS200 (LG Household & Health Care), 0.7 parts by weight of sodium abietate, 0.1 parts by weight of TDDM and 0.05 parts by weight of cumene hydroperoxide instead of the polymer of Example 1 A graft copolymer latex was prepared in the same manner as in Example 1 except for the emulsion in the graft shell preparation step.

[0122] The polymerization conversion rate of the prepared graft copolymer latex was 98.5%, and the average size of the final particles was 105nm.

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Abstract

The present invention relates to a method for preparing an ASA-based graft copolymer, a method for preparing a thermoplastic ASA-based resin composition comprising the same, and a method for manufacturing an ASA-based molded product. More specifically, when a multi-layer structure of ASA-based graft copolymer is prepared by comprising sheath, core, and shell preparation steps, a multi-functional carboxylic acid having 20 or more carbon atoms or a salt thereof is introduced as an emulsifier, thereby reducing the content of the emulsifier remaining in a resin and providing an ASA-based resin having more improved thermal stability and appearance characteristics while maintaining physical properties, such as impact resistance and weather resistance, inherent to the ASA-based resin.

Description

technical field [0001] [Cross Reference to Related Application] [0002] This application claims priority from Korean Patent Application No. 10-2016-0144880 filed in the Korean Intellectual Property Office on Nov. 2, 2016, the disclosure of which is incorporated herein by reference. [0003] The present invention relates to a preparation method of an ASA graft copolymer, a preparation method of a thermoplastic ASA resin composition comprising the ASA graft copolymer, and a preparation method of an ASA molded article, more specifically, an ASA graft copolymerization A method for producing a product, a method for producing a thermoplastic ASA resin composition comprising the ASA graft copolymer, and a method for producing an ASA molded article, wherein, in the preparation of a multilayer ASA graft copolymer comprising the steps of preparing a seed, a core and a shell In the process of compounding, a polyfunctional carboxylic acid or its salt with 20 to 60 carbon atoms is introd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/12C08J3/12C08L51/00C08F2/24C08J3/24C08F285/00
CPCC08F265/06C08L51/003C08L25/12C08F285/00C08F2/24C08F212/08C08K2003/162C08K3/16C08F220/44C08F222/02C08L91/00C08F220/1804C08F222/102C08F220/40C08J3/126C08J3/24C08L2207/53C08F220/70B29C45/0001C08L2312/00C08F2810/20C08F2800/20
Inventor 安凤根黄龙渊吴玄泽金珉静朴春浩姜恩洙安勇希朴壮洹
Owner LG CHEM LTD
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