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:
Jun. 21, 2016
Filed:
Sep. 09, 2014
SK Innovation Co., Ltd., Seoul, KR;
Jisu Jeong, Daejeon, KR;
SungJae Na, Suwon-si, KR;
Sujith Sudevan, Daejeon, KR;
MyungAhn Ok, Daejeon, KR;
YongGyu Han, Daejeon, KR;
KwangJin Chung, Daejeon, KR;
BunYeoul Lee, Suwon-si, KR;
Anish Cyriac, Suwon-si, KR;
SangHwan Lee, Suwon-si, KR;
SK Innovation Co., Ltd., Seoul, KR;
Abstract
There is provided a method for preparing a low-molecular weight poly(alkylene carbonate) of which the molecular weight and chain shape are precisely controlled, by introducing a phosphorous compound having a hydroxyl group as a chain transfer agent in order to regulate the molecular weight, in alternating copolymerizing an epoxide compound and carbon dioxide by using trivalent metal complex prepared from a Salen type ligand containing a quaternary ammonium salt, and a polymer prepared by the method. Since poly(alkylene carbonate) prepared according to the present invention includes a phosphate or phosphonate group in the polymer chain, it has flame-retarding property.