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:
Jul. 26, 1994
Filed:
Apr. 19, 1993
Applicant:
Inventors:
Takayuki Ohtsu, Nara, JP;
Kiyoshi Endo, Osaka, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
5261691 ; 526160 ; 526161 ; 526165 ; 526340 ; 502117 ;
Abstract
A process is provided for preparing butadiene-styrene copolymers having cis-1,4 configuration of at least 80% of butadiene units, bound styrene contents of 2 to 55% and no homopolystyrene. The copolymers are prepared with a new catalyst system having high polymerization activity. The process involves carrying out polymerization of butadiene monomer and styrene monomer in the presence of the new catalyst system which is comprised of a nickel compound and an alkylaluminoxane compound.
Ohtsu, Takayuki. (1994). Process of preparing butadiene-styrene copolymer with nickel compound (U.S. Patent No. 5332794). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5332794
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile