Heteropolymeric Polyimide Polymer Compositions
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United States of America Patent
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Issued Date -
Sep 4, 2008
app pub date -
Aug 1, 2006
filing date -
Aug 2, 2005
priority date (Note) -
Abandoned
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Abstract
The present disclosure describes comprises a polyimide composition comprising at least one diamine monomer and at least two dianhydride monomer types, at least two diamine monomer types and at least one dianhydride monomer at least two diamine monomer types and at least two dianhydride monomer types. In one embodiment, the diamine monomers are 2,2-bis[4-(4aminophenoxy)phenyl]-hexafluoropropane (BDAF) or 4,4'-diaminobenzanilide (DABA) or combinations of the foregoing and the dianhydride monomers are 4,4'-(hexafluoroisopropylidene)di-phthalicanhydride (6-FDA) and 3,3',4,4'-biphenyltetracarboxylic acid dianhydride (s-BDPA) or combinations of the foregoing. The polyimide compositions described herein have controllable and variable properties, such as but not limited to CTE, allowing the use of the polyimide compositions in a wide variety of applications.
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