METHOD FOR PREPARING GRAFT COPOLYMER AND GRAFT COPOLYMER

Title:

METHOD FOR PREPARING GRAFT COPOLYMER AND GRAFT COPOLYMER

Document Type and Number:

WIPO Patent Application WO/2020/050544

Kind Code:

A1

Abstract:

The present invention relates to a method for preparing a graft copolymer and a graft copolymer, the method comprising the steps of: 1) feeding and polymerizing at least one selected from the group consisting of an alkyl (meth)acrylate-based monomer, an aromatic vinyl-based monomer, and a vinyl cyan-based monomer, to prepare seeds; 2) feeding and polymerizing an alkyl (meth)acrylate-based monomer in the presence of the seeds, thereby preparing cores; and 3) feeding and polymerizing an aromatic vinyl-based monomer and a vinyl cyan-based monomer in the presence of the cores, thereby preparing shells, wherein in step 3), an activator containing a compound represented by chemical formula 1 below is fed, and the cores have an average particle diameter of 320-520 nm. According to the above-described preparation method, a graft copolymer, which are particularly enhanced in impact resistance, thermal stability, surface clarity, whiteness, appearance quality, and weather resistance, and a graft copolymer can be provided.

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Inventors:

AHN BONG KEUN (KR)
KIM MIN JUNG (KR)
JOE WANG RAE (KR)
HWANG YONG YEON (KR)
PARK JANG WON (KR)
JEON JI YOON (KR)

Application Number:

PCT/KR2019/011009

Publication Date:

March 12, 2020

Filing Date:

August 28, 2019

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

C08F285/00; C08F2/44; C08F212/08; C08F220/18

Foreign References:

KR20140027872A	2014-03-07
KR20150028194A	2015-03-13
KR20150015899A	2015-02-11
US20130131261A1	2013-05-23
KR20090067965A	2009-06-25

Other References: