Invention Grant
- Patent Title: Method of preparing vinyl chloride-based polymer, vinyl chloride-based polymer, and vinyl chloride-based polymer composition
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Application No.: US15774961Application Date: 2017-09-05
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Publication No.: US10696760B2Publication Date: 2020-06-30
- Inventor: Seong Yong Ahn , Kun Ji Kim , Se Woong Lee , Hyun Kyou Ha , Seong Jae Shin
- Applicant: LG CHEM, LTD.
- Applicant Address: KR Seoul
- Assignee: LG CHEM, LTD.
- Current Assignee: LG CHEM, LTD.
- Current Assignee Address: KR Seoul
- Agency: Dentons US LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@6c4f7ee8 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@351ca9d2
- International Application: PCT/KR2017/009713 WO 20170905
- International Announcement: WO2018/056611 WO 20180329
- Main IPC: C08F14/06
- IPC: C08F14/06 ; C08F2/02 ; C08K5/524 ; C08F2/44 ; C08F2/01 ; C08F2/00
Abstract:
The present invention relates to a method of preparing a vinyl chloride-based polymer, which comprises bulk-polymerizing a vinyl chloride-based monomer in the presence of an initiator (Step 1); and preparing a vinyl chloride-based polymer after the bulk polymerization (Step 2), wherein a phosphite is added in the step 1, a vinyl chloride-based polymer, and a vinyl chloride-based polymer composition comprising the vinyl chloride-based polymer.
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