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:
Mar. 15, 2016
Filed:
Jun. 13, 2014
SK Innovation Co., Ltd., Seoul, KR;
Ji Su Jeong, Daejeon, KR;
Sung Jae Na, Daejeon, KR;
Sujith Sudevan, Daejeon, KR;
Myung Ahn Ok, Daejeon, KR;
Yong Gyu Han, Daejeon, KR;
Kwang Jin Chung, Daejeon, KR;
Bun Yeoul Lee, Suwon-si, KR;
Anish Cyriac, Suwon, KR;
SK INNOVATION CO., LTD., , KR;
Abstract
Provided is preparation of poly(alkylene carbonate) through alternating copolymerization of carbon dioxide and epoxide. According to the disclosure, by introducing a diepoxide compound to alternating copolymerization of carbon dioxide and epoxide compound using a metal(III) prepared with salen-type ligands containing quaternary ammonium salt as a catalyst, some of the polymer chains may be cross-linked to thus increase an average molecular weight of the copolymer and extend a distribution of molecular weight. A resin prepared according to this method may have high mechanical strength and rheological advantages.