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. 01, 1979
Filed:
Apr. 19, 1977
Applicant:
Inventors:
Yutaka Mitsuda, Machida, JP;
Yoshihisa Moriya, Machida, JP;
Hideyuki Tanaka, Machida, JP;
Shinji Sato, Machida, JP;
Assignee:
Denki Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526175 ; 526182 ;
Abstract
A process for producing a conjugated diene polymer, which comprises polymerizing (a) a conjugated diene, (b) two or more conjugated dienes or (c) at least one conjugated diene with a monovinyl aromatic compound, at a temperature of from about 30 to about 100.degree. C in an inert hydrocarbon solvent in the presence of a catalyst composition comprising (i) an alkenyl sodium containing 3 to 8 carbon atoms in the alkenyl moiety and (ii) a sodium alkoxide of a dimethylalkyl carbinol containing 1 to 5 carbon atoms in the alkyl moiety.