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:
Apr. 24, 2012
Filed:
Apr. 30, 2008
Applicants:
Bun Yeoul Lee, Gyeonggi-do, KR;
Sujith S., Gyeonggi-do, KR;
Eun Kyung Noh, Gyeonggi-do, KR;
Jae Ki Min, Gyeonggi-do, KR;
Inventors:
Bun Yeoul Lee, Gyeonggi-do, KR;
Sujith S., Gyeonggi-do, KR;
Eun Kyung Noh, Gyeonggi-do, KR;
Jae Ki Min, Gyeonggi-do, KR;
Assignee:
SK Innovation Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 64/34 (2006.01); C08G 59/68 (2006.01); C08G 64/00 (2006.01); C07F 15/06 (2006.01); C07F 7/10 (2006.01); C07C 251/00 (2006.01); B01J 31/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The complex of the present invention containing an onium salt and a central Lewis acidic metal has a high catalytic activity at a high temperature for the copolymerization of an epoxide and carbon dioxide to produce a high molecular weight poly-carbonate.