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:
Jun. 07, 2011
Filed:
Jan. 23, 2006
Applicants:
Toshiaki Suzuki, Wako, JP;
Lixin Zhang, Wako, JP;
Zhaomin Hou, Wako, JP;
Inventors:
Assignee:
Riken, Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 31/22 (2006.01); C08F 4/52 (2006.01); C08F 36/04 (2006.01); C08F 36/06 (2006.01); C08F 36/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides 1) a complex comprising a mono-anionictridentate ligand, represented by the following general formula (I); 2) a polymerization catalyst composition, comprising the complex; and 3) a cis-1,4-isoprene polymer, a cis-1,4-butadiene polymer, a cis-1,4-isoprene-styrene copolymer, a cis-1,4-butadiene-styrene copolymer, a cis-1,4-butadiene-cis-1,4-isoprene copolymer, and a cis-1,4-butadiene-cis-1,4-isoprene-styrene copolymer, each of which has high-cis-1,4 content in a micro structure and a sharp molecular-weight distribution.