Olin Microelectronic Chemicals, Inc.

Steve L Hsu

Andrew J Blakeney

Ahmad A Naiini

William D Weber

A process for making polyimide-polyamic ester copolymer composition comprising

Process for making polyimide-polyamic ester copolymers

A process for producing a polyimide composition by reacting at least one polyamic acid or at least one polyamic ester or a mixture of at least one polyamic acid and at least one polyamic ester with a selected phosphoramide in the presence of at least one base catalyst to from a polyimide composition.

Chemical imidization reagent for polyimide synthesis

A process for making polyimide composition comprising reacting at least one diamine, at least one tetracarboxylic diacid diester, selected phosphoramide and at least one base catalyst to form at least one polyimide compound, said reaction carried out at a temperature from about 20.degree. C. to about 60.degree. C. and wherein the molar ratio of diamine:tetracarboxylic diacid diester:phosphoramide:base catalyst is in the range of 0.8-1.2:1:2.5-4.0:2.5-4.0.

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East Providence, RI, United States of America

Steve L Hsu