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:
Jan. 28, 2014
Filed:
Feb. 28, 2011
Jisu Jeong, Daejeon, KR;
Sungjae NA, Daejeon, KR;
Sujith Sudevan, Daejeon, KR;
Myungahn OK, Daejeon, KR;
Yonggyu Han, Daejeon, KR;
Kwangjin Chung, Daejeon, KR;
Bun Yeoul Lee, Seoul, KR;
Anish Cyriac, Suwon-si, KR;
Sanghwan Lee, Suwon-si, KR;
JiSu Jeong, Daejeon, KR;
SungJae Na, Daejeon, KR;
Sujith Sudevan, Daejeon, KR;
MyungAhn Ok, Daejeon, KR;
YongGyu Han, Daejeon, KR;
KwangJin Chung, Daejeon, KR;
Bun Yeoul Lee, Seoul, KR;
Anish Cyriac, Suwon-si, KR;
SangHwan Lee, Suwon-si, KR;
SK Innovation Co., Ltd., Seoul, KR;
Abstract
Provided is preparation of poly(alkylene carbonate) by alternating copolymerization of carbon dioxide and epoxide. To be specific, provided are a method for preparing block or graft copolymers of the polymer compound and poly(alkylene carbonate) by alternating-copolymerization of an epoxide compound and carbon dioxide by using a metal (III) compound prepared from salen-type ligand with a quaternary ammonium salt as a catalyst in the presence of a polymer compound having a functional group of hydroxyl or carboxylic acid, and block or graft copolymers prepared by the method.