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:
Jan. 06, 1976
Filed:
May. 23, 1974
Applicant:
Inventors:
Kan Mori, Kawasaki, JA;
Hiroharu Ikeda, Yokohama, JA;
Isao Nagaoka, Yokkaichi, JA;
Tooru Shibata, Yokkaichi, JA;
Sigeo Kawatani, Nishinomiya, JA;
Tatsuhiko Kikuchi, Kawasaki, JA;
Assignee:
Japan Synthetic Rubber Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08D / ; C08D / ;
U.S. Cl.
CPC ...
260 943 ; 450666 ;
Abstract
High molecular weight cis-1,4-polyisoprene is produced by contacting isoprene with a catalyst formed by admixing (A) a titanium tetrachloride, (B) a trihydrocarbylaluminum and (C) a beta-diketone. The activity of this ternary catalyst is not adversely affected by such impurities as cyclopentadiene that are contained in the feed stock isoprene.