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:
May. 26, 2015
Filed:
Feb. 24, 2011
Applicants:
Zhenjiang LI, Nanjing, CN;
Pingkai Ouyang, Nanjing, CN;
He Huang, Nanjing, CN;
Inventors:
Assignee:
NANJING UNIVERSITY OF TECHNOLOGY, Nanjing, Jiangsu, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/08 (2006.01); C08G 69/16 (2006.01); B01J 31/40 (2006.01); C08G 63/78 (2006.01); C08G 63/82 (2006.01); C08G 65/26 (2006.01); C08G 69/20 (2006.01); C08G 77/08 (2006.01); B01J 31/04 (2006.01);
U.S. Cl.
CPC ...
C08G 63/08 (2013.01); B01J 31/40 (2013.01); C08G 63/785 (2013.01); C08G 63/823 (2013.01); C08G 65/2609 (2013.01); C08G 65/2672 (2013.01); C08G 69/20 (2013.01); B01J 31/04 (2013.01); C08G 77/08 (2013.01);
Abstract
This disclosure provides methods of controlled polymerization of cyclic compounds catalyzed by carbene derivatives having a general formula as shown below, and to obtain a biodegradable polymeric material having a large molecular weight, a narrow dispersity, and no metallic impurity.