The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2024
Filed:
Sep. 14, 2021
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Kun Ji Kim, Daejeon, KR;
Seong Yong Ahn, Daejeon, KR;
Heung Kwon Bae, Daejeon, KR;
Se Woong Lee, Daejeon, KR;
Dae Woo Lee, Daejeon, KR;
Hyun Kyou Ha, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 6/00 (2006.01); C08F 2/02 (2006.01); C08F 114/06 (2006.01);
U.S. Cl.
CPC ...
C08F 114/06 (2013.01); C08F 2/02 (2013.01); C08F 6/005 (2013.01);
Abstract
The present invention relates to a method for preparing a vinyl chloride-based polymer, including: bulk polymerizing a vinyl chloride-based monomer in a polymerization reactor to prepare a vinyl chloride-based polymer; and adding water and vapor to the polymerization reactor, and heating to remove an unreacted vinyl chloride-based monomer, wherein an addition amount of the water is 0.500 to 5.000 parts by weight based on 100 parts by weight of the vinyl chloride-based polymer.