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:
Apr. 05, 2005
Filed:
Apr. 05, 2002
Masahiro Sasagawa, Kanagawa, JP;
Shinichi Nakajima, Kanagawa, JP;
Shigeki Takayama, Tokyo, JP;
Takasi Sato, Kanagawa, JP;
Toshinori Shiraki, Kanagawa, JP;
Masahiro Sasagawa, Kanagawa, JP;
Shinichi Nakajima, Kanagawa, JP;
Shigeki Takayama, Tokyo, JP;
Takasi Sato, Kanagawa, JP;
Toshinori Shiraki, Kanagawa, JP;
Asahi Kasei Kabushiki Kaisha, Osaka, JP;
Abstract
The present invention relates to a hydrogenated polymer which is a hydrogenation product of a conjugated diene polymer having an average vinyl bond content of 20% by weight or more and less than 50% by weight and a weight average molecular weight of 60,000 to 600,000 to a degree such that 85% or more of the residual double bonds in the conjugated diene units are hydrogenated, and which has a molecular weight and a number of terminal methyl group carbons as measured by GPC/FTIR analysis satisfying relationship (1):≧0.03  (1)wherein Va, Vb and Vc represent the number of terminal methyl group carbon atoms per 1000 carbon atoms contained in a polymer whose molecular weight is twice the peak top molecular weight, half the peak top molecular weight, and the peak top molecular weight, respectively.