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:
Mar. 17, 1998
Filed:
Nov. 20, 1995
Hiroshi Inoue, Yamaguchi, JP;
Seiichirou Takabayashi, Yamaguchi, JP;
Tadao Muramatu, Yamaguchi, JP;
Kenji Sonoyama, Yamaguchi, JP;
Ube Industries, Ltd., Yamaguchi, JP;
Abstract
An adhesive polyimide composition comprises 100 weight parts of a polyimide siloxane having a Tg of not lower than 200.degree. C. and 0.2 to 5 weight parts of a silane coupling agent having a glycidyl group. An epoxy resin may be incorporated into the polyimide composition. The polyimide siloxane is prepared by polymerization reaction of an aromatic tetracarboxylic acid dianhydride or its derivative and a diamine composition comprising 5 to 25 mol. % of a specific diaminosiloxane and 75 to 95 mol. % of an aromatic diamine having at least two benzene rings and one oxygen atom intervening these benzene rings. The adhesive polyimide composition is generally employed in the form of a solution in an organic solvent and for combining electrically conductive or insulating members.