Title:
METHOD FOR PREPARING VINYL CHLORIDE-BASED POLYMER
Document Type and Number:
WIPO Patent Application WO/2023/224321
Kind Code:
A1
Abstract:
The present invention relates to a method for preparing a vinyl chloride-based polymer in a polymerization device, which comprises a polymerization reactor, a reflux condenser connected to the polymerization reactor, and a recovery pipe connected to the reflux condenser, the method comprising steps in which: a first vinyl chloride-based monomer and an initiator are injected into the polymerization reactor and polymerization is initiated; and polymerization is carried out while a second vinyl chloride-based monomer is recovered from the polymerization reactor through the recovery pipe and a third vinyl chloride-based monomer is injected into the polymerization reactor, wherein the amount of initiator is 0.105-0.110 parts by weight on the basis of 100 parts by weight of the first vinyl chloride-based monomer.
Inventors:
BAE HEUNG KWON (KR)
LEE SE WOONG (KR)
SEO EUN BYEOL (KR)
HA HYUN KYOU (KR)
KIM KUN JI (KR)
LEE SE WOONG (KR)
SEO EUN BYEOL (KR)
HA HYUN KYOU (KR)
KIM KUN JI (KR)
Application Number:
PCT/KR2023/006455
Publication Date:
November 23, 2023
Filing Date:
May 12, 2023
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C08F14/06; C08F2/01; C08F2/18; C08F6/00
Foreign References:
| KR20220009686A | 2022-01-25 | |||
| KR20170111367A | 2017-10-12 | |||
| KR20190005667A | 2019-01-16 | |||
| JP2000119329A | 2000-04-25 | |||
| JPH0912628A | 1997-01-14 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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