METHOD FOR PREPARING VINYL CYANIDE COMPOUND-CONJUGATED DIENE RUBBER-AROMATIC VINYL COMPOUND GRAFT COPOLYMER, AND METHOD FOR PREPARING THERMOPLASTIC RESIN COMPOSITION COMPRISING SAME

WIPO Patent Application WO/2022/085913

A1

The present disclosure relates to a method for preparing a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer, and a method for preparing a thermoplastic resin composition comprising same, and, more specifically, to a method for preparing a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer, and a method for preparing a thermoplastic resin composition comprising same, the copolymer preparation method injecting a conjugated diene rubber latex with an average diameter of 2,400-2,800 Å into an enlarged conjugated diene rubber latex, which is obtained by enlarging a conjugated diene rubber latex with an average diameter of 2,400-2,800 Å by using a polymer coagulant, so as to prepare a bimodal conjugated diene rubber, and graft polymerizing same. According to the present disclosure, the preparation time of the enlarged conjugated diene rubber is reduced, and grafting efficiency is improved such that a synergistic effect in which both impact resistance and flowability are improved is provided.

JUNG YU SUNG (KR)
CHAI JOO BYUNG (KR)
KIM JONG BEOM (KR)
JEON TAEYOUNG (KR)
KIM IN SEOK (KR)

PCT/KR2021/010994

April 28, 2022

August 19, 2021

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LG CHEMICAL LTD (KR)

C08F279/04; B29B11/10; C08F2/22; C08F6/18; C08L25/12; C08L55/02

KR101115798B1	2012-03-14
JP2002212375A	2002-07-31
US5955540A	1999-09-21
KR20050062552A	2005-06-23
KR20200036507A	2020-04-07
KR20200138217A	2020-12-09
KR20210107841A	2021-09-01

See also references of EP 4095174A4

NEWKOREA PATENT & LAW FIRM (KR)

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