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. 27, 2005
Filed:
Jul. 18, 2003
Applicants:
Nobuhiro Ichiroku, Gunma-ken, JP;
Masachika Yoshino, Aichi-ken, JP;
Hideki Akiba, Gunma-ken, JP;
Toshio Shiobara, Gunma-ken, JP;
Inventors:
Nobuhiro Ichiroku, Gunma-ken, JP;
Masachika Yoshino, Aichi-ken, JP;
Hideki Akiba, Gunma-ken, JP;
Toshio Shiobara, Gunma-ken, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G073/10 ; C08L077/00 ; B32B027/28 ;
U.S. Cl.
CPC ...
Abstract
A polyimide resin having phenolic hydroxyl radicals in its skeleton is prepared using a diamine bearing an aromatic ring having an amino radical attached thereto and another aromatic ring having a phenolic hydroxyl radical. The polyimide resin and a composition comprising the polyimide resin, an epoxy resin and a curing agent are suited for use as varnish, adhesive and adhesive film for which adhesion and heat resistance are required.