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. 28, 2014
Filed:
Feb. 27, 2012
Jisu Jeong, Daejeon, KR;
Sungjae NA, Daejeon, KR;
Sujith Sudevan, Daejeon, KR;
Myungahn OK, Daejeon, KR;
Yonggyu Han, Daejeon, KR;
Kwangjin Chung, Daejeon, KR;
Bunyeoul Lee, Suwon-si, KR;
Kodiyan Varghese Jobi, 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;
BunYeoul Lee, Suwon-si, KR;
Kodiyan Varghese Jobi, Suwon-si, KR;
SK Innovation Co., Ltd., Seoul, KR;
SK Global Chemical Co., Ltd., Seoul, KR;
Abstract
Provided is a method for preparing poly(alkylene carbonate) containing ether linkages, by the copolymerization of an epoxy compound and carbon dioxide, with a trivalent metal complex prepared from a salen type ligand containing a quaternary ammonium salt, and a double metal cyanide (DMC) catalyst together. The amount of ether linkages can be controlled by regulating the weight ratio of two catalysts and the carbon dioxide pressure.