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:
Aug. 06, 1985
Filed:
Sep. 07, 1983
Applicant:
Inventors:
Yasumasa Takeuchi, Yokohama, JP;
Mitsuhiko Sakakibara, Yokkaichi, JP;
Nobuo Tagata, Yokkaichi, JP;
Masaki Ogawa, Sayama, JP;
Yasushi Hirata, Higashimurayama, JP;
Shigeru Tomihira, Kodaira, JP;
Assignees:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
5263404 ; 526153 ; 526164 ;
Abstract
A polybutadiene rubber composition having an improved green strength is disclosed, which comprises a polybutadiene having a content of cis-1,4 bond of at least 70%, an average chain length of 1,4-bond of 110.about.450 and a molecular weight distribution represented by a ratio of weight-average molecular weight to number-average molecular weight of not less than 5.0.