Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hiroaki Yamaguchi0
Masato Murakami0
Date of Patent
October 25, 2011
0Patent Application Number
119188030
Date Filed
April 17, 2006
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A polyimide film-laminated body is composed of a metal layer and an aromatic polyimide layer formed by casting a polyamic acid solution composition, comprising 3,3′,4,4′-biphenyltetracarboxylic dianhydride as an essential tetracarboxylic dianhydride component and with introduction of a specific diamine component, onto a metal foil. The polyimide film-laminated body has an excellent gas permeation rate and moisture permeation rate, with heat resistance, a high elastic modulus and a low linear expansion coefficient, and with reduced foaming and delamination during the high-temperature steps for formation of the laminated body.
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