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. 19, 2023
Filed:
Jan. 20, 2023
Applicant:
Dic Corporation, Tokyo, JP;
Inventors:
Mai Hasebe, Saitama, JP;
Hideaki Takei, Saitama, JP;
Yusuke Takahashi, Tokyo, JP;
Yukie Uemura, Osaka, JP;
Kumiko Karasawa, Osaka, JP;
Assignee:
DIC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09J 7/10 (2018.01); C09J 175/08 (2006.01); C09J 7/38 (2018.01);
U.S. Cl.
CPC ...
C09J 7/10 (2018.01); C09J 7/38 (2018.01); C09J 175/08 (2013.01); C09J 2475/00 (2013.01);
Abstract
An adhesive tape including an adhesive layer is provided. The adhesive layer has a biobased content of 50% or more by mass. The adhesive layer contains a reaction product of a urethane resin (A) and a cross-linking agent (B). The urethane resin (A) contains at least a structural unit derived from a biobased polyether polyol and a structural unit derived from an aromatic polyisocyanate. The adhesive layer has a gel fraction of 10% or more by mass and 80% or less by mass and a stress of less than 50 N/cmat 100% strain in a stress-strain curve.