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:
Jun. 27, 2023
Filed:
Mar. 01, 2018
Mitsui Chemicals, Inc., Tokyo, JP;
Takahiro Maeda, Dusseldorf, DE;
Yoshiyuki Ogawa, Chiba, JP;
MITSUI CHEMICALS, INC., Tokyo, JP;
Abstract
A laminate for a battery with a polypropylene adhesive layer and a metal substrate layer: (1) the adhesive includes 40-94 wt % of a propylene copolymer (A), 3-30 wt % of a butene-containing copolymer (B), 3-30 wt % of an ethylene-α-olefin copolymer (C) ((A), (B), and (C) is 100 wt %), (2) the copolymer (A) has a melting point of 130° C. or more measured with a differential scanning calorimeter, and a total proportion of a structural unit derived from ethylene is 4-25 mol % relative to 100 mol % of a total structural units forming all the copolymers (A) contained in the adhesive, (3) the copolymer (B) includes less than 1 mol % of a structural unit derived from ethylene, and has a melting point of 100° C. or less measured with a differential scanning calorimeter, and (4) the copolymer (C) includes 50-99 mol % of a structural unit derived from ethylene.