SOLVENT-SOLUBLE POLYIMIDE COPOLYMER AND POLYIMIDE VARNISH

PROBLEM TO BE SOLVED: To provide a solvent-soluble polyimide copolymer which has high solvent solubility, has excellent flexibility and does not practically generate siloxane outgas. SOLUTION: The polyimide copolymer is obtained by imidizing a component (A): an ether group-containing tetracarboxylic...

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Bibliographische Detailangaben
Hauptverfasser:	SAEKI TAIDO, YOSHIKAWA HIDEYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a solvent-soluble polyimide copolymer which has high solvent solubility, has excellent flexibility and does not practically generate siloxane outgas. SOLUTION: The polyimide copolymer is obtained by imidizing a component (A): an ether group-containing tetracarboxylic acid dianhydride (a1) and a 3,3',4,4'- diphenyl sulfone tetracarboxylic acid dianhydride (a2), and a component (B): an ether group-containing aromatic diamine (b1) and an oxyalkylene group-containing diamine (b2). COPYRIGHT: (C)2006,JPO&NCIPI