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:
Jul. 13, 2021
Filed:
Dec. 19, 2017
Dic Corporation, Tokyo, JP;
Seiji Mizuta, Ichihara, JP;
Hiroki Kobayashi, Tokyo, JP;
Takatoshi Matsuo, Tokyo, JP;
Hidemi Nakamura, Tokyo, JP;
Takashi Mihara, Ichihara, JP;
Tsutomu Kanno, Tokyo, JP;
Akio Umino, Ichihara, JP;
Hideaki Takei, Ichihara, JP;
Tatsuya Kouyama, Tokyo, JP;
DIC CORPORATION, Tokyo, JP;
Abstract
The invention provides a packaging material that has high formability and that does not undergo a decrease in the adhesion strength between layers and appearance defects such as lifting between layers even after thermal fusion between portions of the sealant layer performed for sealing battery elements and furthermore after a long-term durability test under high temperature and high humidity. The adhesive for the packaging material including, as essential components, a polyol composition (A) and a polyisocyanate composition (B), wherein the polyol composition (A) includes a polyester polyol made from, as essential materials, a polybasic acid or its derivative and a polyhydric alcohol, the polybasic acid or its derivative material is all an aromatic-ring-containing polybasic acid or its derivative, and the polyester polyol has a number-average molecular weight in a range of 3000 to 100000; a battery packaging material, a battery container, and a battery that use the adhesive.