Unlock instant, AI-driven research and patent intelligence for your innovation.

Graft copolymer production method

A graft copolymer and copolymer technology, applied in the field of graft copolymer preparation, can solve the problems of insufficient dissolution, deterioration and limitation of heat-resistant ABS graft copolymer color characteristics, etc., and achieve increased polymerization conversion rate, Effect of reducing residual monomers and total volatile organic compounds and improving color characteristics

Active Publication Date: 2020-11-20
LG CHEM LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, although the above-mentioned heat-resistant ABS graft copolymer is excellent in heat resistance and processability due to a remarkably reduced amount of residue, it has limitations in its use as an automotive interior material due to its unique odor.
In addition, the maleimide-based monomer is not sufficiently dissolved in the reaction solution, so that the polymerization conversion rate is low, and it has a yellow color due to inherent characteristics, which causes deterioration of the color characteristics of the heat-resistant ABS graft copolymer

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Graft copolymer production method
  • Graft copolymer production method
  • Graft copolymer production method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation method of the graft copolymer according to one embodiment of the present invention comprises: 1) preparation liquid maleimide type monomer; 2) preparation comprises diene type rubber polymer, aromatic vinyl type monomer and ethylene and 3) adding the liquid maleimide monomer and the reaction solution into a reactor and performing polymerization.

[0018] The preparation method of the graft copolymer according to one embodiment of the present invention further includes: after the polymerization, 4) removing unreacted monomers and solvents from the polymerization product.

[0019] Hereinafter, each step of the preparation method of the graft copolymer according to one embodiment of the present invention will be described in detail.

[0020] Step 1): Preparation of liquid maleimide monomer

[0021] First, a liquid maleimide-based monomer is prepared.

[0022] Generally, a maleimide-based monomer dissolved in a vinyl cyano-based monomer is added to a react...

preparation Embodiment 1

[0072] The solid phase N-phenylmaleimide was melted at 110°C to prepare liquid N-phenylmaleimide.

preparation Embodiment 2

[0074] The solid phase N-phenylmaleimide was melted at 130°C to prepare liquid N-phenylmaleimide.

[0075] Examples and Comparative Examples

[0076] Details of the components used in Examples and Comparative Examples are as follows.

[0077] (A) Maleimide monomer

[0078] (A-1) The liquid N-phenylmaleimide prepared in Preparation Example 1 was used.

[0079] (A-2) The liquid N-phenylmaleimide prepared in Preparation Example 2 was used.

[0080] (A-3) Use of solid-phase N-phenylmaleimide.

[0081] (B) Diene rubber polymer

[0082] (B-1) Butadiene rubber polymer: A butadiene rubber polymer prepared only by crosslinking polymerization of 1,3-butadiene was used.

[0083] (B-2) Butadiene-styrene rubber polymer: Butadiene-styrene rubber polymer prepared by cross-linking polymerization of a monomer mixture containing 60% by weight of 1,3-butadiene and 40% by weight of styrene was used. Styrene rubber polymer.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a graft copolymer production method comprising the steps of: preparing a liquid-phase maleimide-based monomer; preparing a reaction solution comprising a dienic rubberpolymer, an aromatic vinyl-based monomer and a vinyl cyanide-based monomer; and polymerizing the liquid-phase maleimide-based monomer and the reaction solution by inputting same in a reactor. According to the production method of the present invention, the polymerization participation rate of the maleimide-based monomer may be increased, and the color properties, glass transition temperature andsoftening temperature of the graft copolymer may be improved.

Description

technical field [0001] [Cross Reference to Related Application] [0002] This application claims priority and benefit from Korean Patent Application No. 10-2018-0141065 filed on November 15, 2018, the disclosure of which is incorporated herein by reference in its entirety. [technical field] [0003] The invention relates to a preparation method of a graft copolymer, in particular to a preparation method of a graft copolymer with an improved polymerization conversion rate of a maleimide monomer. Background technique [0004] Generally, a thermoplastic resin composition comprising an ABS graft copolymer prepared by emulsion polymerization and an α-methylstyrene / acrylonitrile copolymer, or comprising an ABS graft copolymer prepared by emulsion polymerization and N-phenyl maleic acid A thermoplastic resin composition of imide / styrene / acrylonitrile copolymer has been used as a heat-resistant resin composition. [0005] However, although the heat-resistant resin composition ex...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/04C08F2/02C08F6/00
CPCC08F279/04C08F2/02C08F6/001C08F212/08C08F220/44C08F222/40C08L51/04C08F6/003C08F226/06C08L55/02C08L2201/08
Inventor 张志旭李大雨徐在范朴晶台金圭善
Owner LG CHEM LTD