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. 10, 2012
Filed:
May. 29, 2008
Takahiro Mori, Saitama, JP;
Yoshihiro Fukuda, Saitama, JP;
Yoshinori Takahata, Saitama, JP;
Adeka Corporation, Tokyo, JP;
Abstract
A composite material obtained by laminating (A) a layer formed from an epoxy resin curing composition and (B) a layer of a polyimide to each other. The composite material is preferably obtained by applying the epoxy resin curing composition to at least one side of a polyimide film or sheet. The epoxy resin curing composition includes a curing agent containing a polyamide compound having a repeat unit comprising a phenolic hydroxyl group containing structure represented by the following formula (I) or (II): In formula (I), ring A and R each represent a phenylene group or a naphthylene group, each of which may be substituted with a halogen atom, a hydroxyl group or an alkyl group having 1 to 4 carbon atoms. In formula (II), ring B is an arylene group having 6 to 18 carbon atoms or an alkylidenediarylene group having 13 to 25 carbon atoms, each of which may be substituted with a halogen atom, a hydroxyl group or an alkyl group having 1 to 4 carbon atoms.