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:
Apr. 07, 2020
Filed:
Apr. 27, 2016
Fujikura Kasei Co., Ltd., Tokyo, JP;
Hirokazu Mogami, Kuki, JP;
Fujikura Kasei Co., Ltd., Tokyo, JP;
Abstract
An adhesive composition, includes a block copolymer (X) formed of a block (A) and a block (B), the block (A) having a glass transition temperature of 75° C. or higher, the block (A) including a monomer unit having a first cyclic structure and a carboxyl group-containing monomer unit, the block (B) including 70% or more of an acrylic acid ester unit represented by General Formula (1); and a tackifier (Y) having a softening point of 120° C. or higher and a second cyclic structure, in which a mass ratio of the block (A) to the block (B) (block (A)/block (B)) is 10/90 to 40/60, in an acid value of the block copolymer (X), an acid value derived from the block (A) is 8 mgKOH/g or more, and at least one end of the block copolymer (X) is the block (A).