Title:
METHOD FOR PREPARING COPOLYMER, COPOLYMER PREPARED THEREBY, AND THERMOPLASTIC RESIN COMPOSITION COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2024/096433
Kind Code:
A1
Abstract:
The present invention relates to a method for preparing an acryl-imide-based copolymer, the method comprising the steps of: (S1) feeding a reaction solution containing an alkyl (meth)acrylate-based monomer and an aromatic vinyl-based monomer and a buffer solution to a reactor to initiate polymerization; and (S2) performing polymerization while continuously feeding a monomer solution containing an imide-based monomer to the reactor, wherein: the monomer solution in step (S2) is continuously fed following step (S1) until the polymerization conversion rate reaches 50% to 75%; the buffer solution contains two or more types of non-phosphate buffers; the pH of a polymer system is maintained to prevent the hydrolysis of monomers, thereby improving the color and heat resistance of a resin; and the imbalance between compositions of monomer units of the copolymer may be resolved by divisional feeding of the monomers.
Inventors:
HONG SUNG WON (KR)
LEE DAE WOO (KR)
JU MIN CHEOL (KR)
SHIN SEONG JAE (KR)
SHIN MIN SEUNG (KR)
KIM IN SOO (KR)
SHIN CHAN HO (KR)
LEE DAE WOO (KR)
JU MIN CHEOL (KR)
SHIN SEONG JAE (KR)
SHIN MIN SEUNG (KR)
KIM IN SOO (KR)
SHIN CHAN HO (KR)
Application Number:
PCT/KR2023/016678
Publication Date:
May 10, 2024
Filing Date:
October 25, 2023
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C08F220/18; C08F2/00; C08F2/18; C08F2/44; C08F212/08; C08F220/44; C08F222/40; C08K3/26; C08K5/09; C08K5/098
Foreign References:
| EP4056649A1 | 2022-09-14 | |||
| KR20200065804A | 2020-06-09 | |||
| US20160159995A1 | 2016-06-09 | |||
| KR20190042620A | 2019-04-24 | |||
| KR20160025494A | 2016-03-08 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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