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. 13, 2008
Filed:
Jun. 26, 2003
Masahiro Sasagawa, Yokohama, JP;
Toshinori Shiraki, Yamato, JP;
Shigeki Takayama, Tokyo, JP;
Shigeru Sasaki, Yokohama, JP;
Katsumi Suzuki, Kawasaki, JP;
Takahiro Hisasue, Yokohama, JP;
Kazuo Moritou, Kawasaki, JP;
Masahiro Sasagawa, Yokohama, JP;
Toshinori Shiraki, Yamato, JP;
Shigeki Takayama, Tokyo, JP;
Shigeru Sasaki, Yokohama, JP;
Katsumi Suzuki, Kawasaki, JP;
Takahiro Hisasue, Yokohama, JP;
Kazuo Moritou, Kawasaki, JP;
Asahi Kasei Chemicals Corporation, Tokyo, JP;
Abstract
A hydrogenated copolymer obtained by hydrogenating an unhydrogenated copolymer comprising conjugated diene monomer units and vinyl aromatic monomer units, the hydrogenated copolymer containing at least one hydrogenated copolymer block (B) which is obtained by hydrogenating an unhydrogenated random copolymer block comprised of conjugated diene monomer units and vinyl aromatic monomer units, wherein the hydrogenated copolymer has the following characteristics: the hydrogenated copolymer has a content of the vinyl aromatic monomer units of from more than 40% by weight to less than 95% by weight; at least one peak of loss tangent (tan δ) is observed at −10 to 80° C. in a dynamic viscoelastic spectrum obtained with respect to the hydrogenated copolymer; and substantially no crystallization peak ascribed to the copolymer block (B) is observed at −20 to 80° C. in a differential scanning calorimetry (DSC) chart obtained with respect to the hydrogenated copolymer.