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:
Sep. 04, 2012
Filed:
Dec. 21, 2007
Tadashi Sawasato, Ichihara, JP;
Eiji Sato, Ichihara, JP;
Hideki Toya, Ichihara, JP;
Hitoshi Nakazawa, Ichihara, JP;
Tadashi Sawasato, Ichihara, JP;
Eiji Sato, Ichihara, JP;
Hideki Toya, Ichihara, JP;
Hitoshi Nakazawa, Ichihara, JP;
Denki Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention relates to tubular forming material made of a composition comprising block copolymers each made of a vinyl aromatic hydrocarbon and a conjugated diene, which has a uniaxial elongation viscosity at 88° C. at a strain rate of 0.5 sec−1 satisfying the following formula between 1.0 sec and 2.8 sec after initiation of elongation,0.25<(LOG η2.8−LOG η1.0)/(2.8−1.0)<0.4wherein η1.0 and η2.8 represent uniaxial elongation viscosities (Pa·sec) at elongation times of 1.0 sec and 2.8 sec, respectively, when measured by a Meissner model elongation viscometer. The composition contains three block copolymers at a specified blend ratio.