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High-acrylonitrile-content ABS and preparation method thereof

A technology of acrylonitrile and content, applied in the field of polymer chemistry, can solve the problems of insufficient tensile strength and impact strength, low tensile strength and impact strength, and difficulty in manufacturing high-grade plates, and achieves high Vicat temperature, low Effect of low yellowness index, residual monomer content

Inactive Publication Date: 2016-07-20
SHANGHAI HUAYI POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For example, in CN1373778A of DOW Company, the ABS prepared by the bulk process usually has acrylonitrile content of 22.5%-24.0%, and the tensile strength and impact strength are not high enough, so it is difficult to be used to manufacture high-grade plates
[0005] The styrene-acrylonitrile-maleic anhydride terpolymer produced by two kettles connected in series in US4141934 has a Vicat heat-resistant temperature of 120°C, an acrylonitrile content of less than 24.0%, does not contain glue, and only has a lower Mechanical properties such as tensile strength and impact strength are difficult to use in the manufacture of panels

Method used

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  • High-acrylonitrile-content ABS and preparation method thereof
  • High-acrylonitrile-content ABS and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1: Preparation of rubber-containing styrene-acrylonitrile random copolymer SAN with high acrylonitrile content by continuous bulk polymerization

[0038] The first reactor is a static mixing reactor, the second reactor is a CSTR reactor, the first reactor is used as a reactor for the rubber grafting process, and the second reactor is used as a reactor for the phase inversion process.

[0039] The reaction mixture in the first reactor includes: (1) rubber solution: styrene 45%, acrylonitrile 35%, styrene-butadiene rubber 5%. Butadiene content is 70% in the styrene-butadiene rubber used, and styrene content is 30%; (2) tert-butyl peroxypivalate 0.04%; (3) α-methylstyrene dimer 0.08%; ( 4) Ethylbenzene 15%; (5) Maleic anhydride 1.4%.

[0040] Add mercaptan 0.25% to the second reactor.

[0041] Production Process:

[0042] (1) Rubber grafting process: the rubber solution is added to a static mixing reactor for grafting reaction, and the conditions of the static mixi...

Embodiment 2

[0053] Step 1: Preparation of rubber-containing styrene-acrylonitrile random copolymer SAN with high acrylonitrile content by continuous bulk polymerization

[0054] The first reactor is a static mixing reactor, the second reactor is a CSTR reactor, the first reactor is used as a reactor for the rubber grafting process, and the second reactor is used as a reactor for the phase inversion process.

[0055] The reaction mixture in the first reactor includes: (1) Rubber solution: 50% styrene, 30% acrylonitrile, 5% styrene-butadiene rubber. Butadiene content is 70% in the styrene-butadiene rubber used, and styrene content is 30%; (2) tert-butyl peroxypivalate 0.03%; (3) α-methylstyrene dimer 0.06%; ( 4) Ethylbenzene 15%; (5) Methyl acrylate 1.1%.

[0056] Add mercaptan 0.20% to the second reactor.

[0057] Production Process:

[0058] (1) Rubber grafting process: the rubber solution is added to a static mixing reactor for grafting reaction, and the conditions of the static mixin...

Embodiment 3

[0069] Step 1: Preparation of rubber-containing styrene-acrylonitrile random copolymer SAN with high acrylonitrile content by continuous bulk polymerization

[0070] The first reactor is a static mixing reactor, the second reactor is a CSTR reactor, the first reactor is used as a reactor for the rubber grafting process, and the second reactor is used as a reactor for the phase inversion process.

[0071] The reaction mixture in the first reactor includes: (1) rubber solution: styrene 60%, acrylonitrile 20%, styrene-butadiene rubber 5%. Butadiene content is 70% in the styrene-butadiene rubber used, and styrene content is 30%; (2) tert-butyl peroxypivalate 0.02%; (3) α-methylstyrene dimer 0.04%; ( 4) Ethylbenzene 15%; (5) Maleic anhydride 0.9%.

[0072] Add mercaptan 0.15% to the second reactor.

[0073] Production Process:

[0074] (1) Rubber grafting process: the rubber solution is added to a static mixing reactor for grafting reaction, and the conditions of the static mixi...

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Abstract

The invention discloses a high-acrylonitrile-content ABS composition which is composed of a rubber dispersed phase existing in a particle form and a continuous phase of a random copolymer formed by copolymerization of styrene and acrylonitrile. The composition also comprises a maleic anhydride or methacrylate copolymer. The acrylonitrile content in the composition is 24.0-28.0%. The product ABS composition prepared with the method provided by the invention has high acrylonitrile content, white color, and low residual monomer content. The ABS composition can be well applied in the fields such as sheet material manufacturing.

Description

technical field [0001] The invention belongs to the field of macromolecule chemistry, and in particular relates to an ABS with high acrylonitrile content and a preparation process thereof. Background technique [0002] ABS resin refers to acrylonitrile-styrene-butadiene copolymer (the acronym of AcrylonitrileButadieneStyrene respectively), which is a thermoplastic polymer material with high strength, good toughness and easy processing. ABS resin has the characteristics of impact resistance, high rigidity, solvent resistance, low temperature resistance, excellent mechanical and electrical properties, and is easy to process, stable in size and good in surface gloss. It is a thermoplastic material with a wide range of uses. The increase of acrylonitrile content in ABS is beneficial to improve the solvent resistance, rigidity and mechanical properties of ABS. ABS with high acrylonitrile content can be applied to processing boards and other products, and has a wide range of uses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/12C08L55/02C08F212/08C08F220/44C08F220/14C08F222/06
Inventor 唐来安许家福刘念朱结东
Owner SHANGHAI HUAYI POLYMER
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