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:
Mar. 05, 1985
Filed:
Sep. 22, 1983
Applicant:
Inventors:
Assignee:
UBE Industries, Ltd., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526140 ; 526136 ;
Abstract
Polybutadiene consisting of from 5% to 30% by weight of a boiling n-hexane-insoluble fraction and from 70% to 95% by weight of a boiling n-hexane-soluble fraction and having enhanced mechanical strength is prepared by polymerizing 1,3-butadiene in a polymerization solvent in the presence of a specific catalyst consisting essentially of (A) a cobalt compound catalytic component soluble in the polymerization solvent; (B) an organic aluminum halide catalytic component; (C) a trialkyl aluminum-water reaction product in catalytic component, and (D) a catalytic component consisting of carbon disulfide and/or phenyl isothiocyanate, and by isolating the resultant polybutadiene from the reaction mixture.