Title:
GRAFT COPOLYMER PREPARATION METHOD AND GRAFT COPOLYMER PREPARED BY PREPARATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/010222
Kind Code:
A1
Abstract:
The present invention relates to a graft copolymer preparation method and a graft copolymer, the method comprising the steps of: injecting a first molecular weight control agent, a diene-based rubber polymer, a vinyl aromatic monomer and a vinyl cyanide-based monomer together into a reactor to initiate polymerization; and continuously injecting, after initiation of polymerization, a second molecular weight control agent, a vinyl aromatic monomer and a vinyl cyanide-based monomer into the reactor to perform polymerization, wherein the second molecular weight control agent comprises an alkylstyrene-based dimer and a mercaptan-based compound in a weight ratio of 40.0:60.0 to 70.0:30.0, and the weight ratio of the first molecular weight control agent and the second molecular weight control agent is 5.0:95.0 to 25.0:75.0.
Inventors:
JEON TAE YOUNG (KR)
CHAI JOO BYUNG (KR)
JUNG YU SUNG (KR)
KIM JONG BEOM (KR)
KIM IN SEOK (KR)
CHAI JOO BYUNG (KR)
JUNG YU SUNG (KR)
KIM JONG BEOM (KR)
KIM IN SEOK (KR)
Application Number:
PCT/KR2021/008557
Publication Date:
January 13, 2022
Filing Date:
July 06, 2021
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C08F279/04; C08F2/01; C08F2/38
Foreign References:
KR20020004504A | 2002-01-16 | |||
KR20160032668A | 2016-03-24 | |||
CN110964133A | 2020-04-07 | |||
KR100834423B1 | 2008-06-09 | |||
KR100716563B1 | 2007-05-09 | |||
JPH0959325A | 1997-03-04 | |||
KR102039031B1 | 2019-11-01 |
Other References:
See also references of EP 4029889A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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