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:
May. 19, 2020
Filed:
Jun. 07, 2017
Lg Chem, Ltd., Seoul, KR;
Jin Hyuck Ju, Daejeon, KR;
Hyun Kyou Ha, Daejeon, KR;
Joong Chul Lim, Daejeon, KR;
Yang Jun Jeon, Daejeon, KR;
Min Jeong Kang, Daejeon, KR;
LG CHEM LTD., Seoul, KR;
Abstract
The present invention relates to a method of preparing a vinyl chloride-based polymer, and more specifically, to a method comprising the steps of, (S1) preparing a mixture in which a first protective colloid auxiliary agent and a chain regulator are mixed; (S2) preparing a second protective colloid auxiliary agent including the chain regulator activated by stirring the mixture prepared in step (S1); and (S3) performing polymerization by adding a vinyl chloride-based monomer and a polymerization initiator in the presence of the second protective colloid auxiliary agent prepared in step (S2).