Aromatic fluoro-polyimides

Abstract

Abstract WHEREIN Y IS A DIVALENT LINKING ATOM OR GROUP AND IS ADVANTAGEOUSLY -O-, -S-, -CO-, -SO2-, -CONH-, -CH2-, OR -(CF2)N- WHERE N IS AS INTEGER FROM TWO TO EIGHT ININCLUSIVE AND ABOUT 10 TO 50 MOLES PERCENT OF SAID DIVALENT AROMATIC GROUPS HAVE AT LEAST ONE DIRECT NUCLEAR SUBSTITUENT SELECTED FROM ORGANOCARHONYLAMINO GROUPS, PREFERABLY ACYLAMINO GROUPS, A CARBOXYLIC ACID GROUP, AND ALKOXY-CARBONYL GROUPS, PREFERABLY THERE ARE PRESENT, A FIRST DIRECT NUCLEAR SUBSTITUENT WHICH IS AN ORGANCARBOXYLAMINO GROUP, PREFERABLY ACYLAMINO AND A SECOND DIRECT NUCLEAR SUBSTITUENT WHICH IS A CARBOXYLIC ACID GROUP OR AN ALKOXYCARBONYL GROUP, THE SAID FIRST AND SECOND DIRECT NUCLEAR SUBSTITUENTS BEING PRESENT IN SUBSTANTIALLY EQUIMOLAR PROPORTIONS, AND BEING ATTACHED TO SEPARATE AROMATIC NUCELI. PHENYLENE PHENYLENE-Y-PHENYLENE WHEREIN X IS A DIVALENT LINKING ATOM OR GROUP, ADVANTAGEOUSLY A DIRECT LINK, :O-, -S-, -CO-, -SO2-, -CH2-, OR -(CF2)N- WHERE N IS AN INTEGER FROM TWO TO EIGHT INCLUSIVE AND R REPRESENTS DIVALENT AROMATIC GROUPS HAVING THE FORMULAE: R-) -(N<(-CO-1,2-PHENYLENE-CO-)-X-(1,2-(-CO-N(-)-CO-)-PHENYL)- AROMATIC FLUOROPOLYAMIDE CO-POLYMER COMPOSITIONS SUITABLE FOR USE AS HIGH TEMPERATURE ADHESIVES ARE PROVIDED WHICH INCLUDE THE REPEATING UNIT:

Inventors

• 👤 J Critchley

Bibliographic Details