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. 03, 2012
Filed:
Sep. 26, 2007
Takahiro Asai, Kawasaki, JP;
Koichi Misumi, Kawasaki, JP;
Atsushi Miyanari, Kawasaki, JP;
Yoshihiro Inao, Kawasaki, JP;
Akihiko Nakamura, Kawasaki, JP;
Takahiro Asai, Kawasaki, JP;
Koichi Misumi, Kawasaki, JP;
Atsushi Miyanari, Kawasaki, JP;
Yoshihiro Inao, Kawasaki, JP;
Akihiko Nakamura, Kawasaki, JP;
Tokyo Ohta Kogyo Co., Ltd., Kanagawa, JP;
Abstract
Disclosed is an adhesive composition whose component is a polymer obtained by copolymerizing a monomer composition containing styrene, a (meth)acrylic acid ester having a cyclic structure, and an alkyl(meth)acrylate having a chain structure. The monomer composition further contains a carboxylic acid having an ethylene double bond, a bifunctional monomer, and a styrene macromonomer. The polymer has a styrene block segment. This can improve heat resistance, adhesive strength in a high temperature environment, alkaline resistance, and easiness in stripping of an adhesive composition that has been subjected to a high temperature process. As a result, there can be obtained an adhesive composition which has high heat resistance, adhesive strength in a high temperature environment, and alkali resistance, and which can be easily stripped off after the adhesive composition is processed at a high temperature.