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:
Dec. 16, 2003
Filed:
Sep. 05, 2002
Applicant:
Inventors:
Michinori Suzuki, Chiba, JP;
Masato Murakami, Chiba, JP;
Assignee:
Ube Industries, Ltd., Yamaguchi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 4/06 ; C08F 4/72 ; C08F 4/02 ; C07F 7/00 ;
U.S. Cl.
CPC ...
C08F 4/06 ; C08F 4/72 ; C08F 4/02 ; C07F 7/00 ;
Abstract
Modified polybutadiene having a high-cis and low-trans structure with a moderate 1,2-structure content and exhibiting improved characteristics such as cold flow properties, which is obtained by modifying starting polybutadiene having a Tcp/ML ratio (Tcp: 5% toluene solution viscosity at 25° C.ML : Mooney viscosity at 100° C.) of 2.5 or more in the presence of a transition metal catalyst.