Electrically conductive polyimide film containing gold (III) ions, composition, and process of making

US5575955A · kind A · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Maggie L. Caplan · Sun City West, US
• Diane M. Stoakley · Yorktown, US
• Anne K. St. Clair · Poquoson, US

Key dates

• Filing date: Jul 22, 1994
• Grant date: Nov 19, 1996
• Expiry date: Jul 22, 2014

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01B1/22
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An electrically conductive, thermooxidatively stable poltimide, especially a film thereof, is prepared from an intimate admixture of a particular polyimide and gold (III) ions, in an amount sufficient to provide between 17 and 21 percent by weight of gold (III) ions, based on the weight of electrically conductive, thermooxidatively stable polyimide. The particular polyimide is prepared from a polyamic acid which has been synthesized from a dianhydride/diamine combination selected from the group consisting of 3,3',4,4'-benzophenonetetracarboxylic dianhydride and 2,2-bis[4-(4 -aminophenoxy)phenyl]hexafluoropropane; 3,3',4,4'-benzophenonetetracarboxylic dianhydride and 4,4'-oxydianiline; 2,2'-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride and 4,4'-oxydianiline; and 3,3'4,4'-benzophenonetetracarboxylic dianhydride and 2,2-bis(3-aminophenyl)hexafluoropropane.