Poly(amide-acid) compositions derived from tetracarboxylic acid dianhyrides capable of solution imidization

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dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.en
dc.contributor.inventorMcGrath, James E.en
dc.contributor.inventorGungor, Attilaen
dc.date.accessed2016-08-19en
dc.date.accessioned2016-08-24T17:55:34Zen
dc.date.available2016-08-24T17:55:34Zen
dc.date.filed1991-07-25en
dc.date.issued1993-03-16en
dc.description.abstractThe imidization temperature of poly(amide-acid) compositions derived from tetracarboxylic acid dianhydrides can be lowered by use of a bis(aminophenoxyphenyl) phosphine oxide in the diamine component which is reacted with the dianhydride. These homo- or copolyimides can be cyclized without use of catalysts or excessive temperature which can product undesired side reactions. Tough film forming materials can be produced which show excellent thermo-oxidative stability and high char yields even at 800.degree. C. in air.en
dc.format.mimetypeapplication/pdfen
dc.identifier.applicationnumber7735488en
dc.identifier.patentnumber5194565en
dc.identifier.urihttp://hdl.handle.net/10919/72795en
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/65/945/051/0.pdfen
dc.language.isoen_USen
dc.publisherUnited States Patent and Trademark Officeen
dc.subject.cpcC08G73/1057en
dc.subject.cpcC08G79/04en
dc.subject.uspc524/27en
dc.subject.uspcother525/421en
dc.subject.uspcother525/422en
dc.subject.uspcother528/167en
dc.subject.uspcother528/125en
dc.subject.uspcother528/126en
dc.subject.uspcother528/322en
dc.subject.uspcother528/342en
dc.subject.uspcother528/350en
dc.subject.uspcother528/353en
dc.titlePoly(amide-acid) compositions derived from tetracarboxylic acid dianhyrides capable of solution imidizationen
dc.typePatenten
dc.type.dcmitypeTexten
dc.type.patenttypeutilityen

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