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:
Feb. 21, 2023
Filed:
Oct. 10, 2018
Denka Company Limited, Tokyo, JP;
Yuya Nakamura, Chiba, JP;
Jun Yoshida, Chiba, JP;
Denka Company Limited, Tokyo, JP;
Abstract
The resin composition includes a block copolymer including a vinyl aromatic hydrocarbon-derived structural unit and a conjugated diene-derived structural unit, the resin composition satisfying the following (1) to (3): (1) an area ratio of components having a molecular weight in terms of polystyrene of equal to or more than 400,000 with respect to all components is equal to or more than 8% and equal to or less than 50%; (2) at least one main peak of a loss tangent value (tan δ) measured under a condition of a frequency of 1 Hz at a temperature rising rate of 4° C./min in accordance with ISO 6721-1 is present in a range of equal to or more than 70° C. and equal to or less than 100° C.; and (3) a strain hardening degree (λ max) of a compression-molded specimen prepared in accordance with ISO 293 is equal to or more than 2.0.