Features of the Crystal Structure of the Polyimide Derived from 3,3'-Diaminobenzophenone and 3,3',4,4'-Benzophenonetetracarboxylic Dianhydride

Changes occurring in the structural organization of the thermoplastic polyimide derived from 3,3'-diaminobenzophenone and 3,3',4,4'-benzophenonetetracarboxylic dianhydride on heat treatment at temperatures in the range 250-350°C were studied, and the influence of these changes on the rheological behavior of the polymer was examined.     

Fullerene-Modified Polyimide Derived from 3,3',4',-Benzophenonetetracarboxylic Acid and 3,3'-Diaminobenzophenone for Casted Items and Its Use in Tribology

The possibility was examined of processing into a casted item (molding) of the crystallizing thermoplastic polyimide derived from 3,3'-diaminobenzophenone and 3,3',4,4'-benzophenonetetracarboxylic dianhydride and of composites of this polyimide with fullerenes. The tribological characteristics of the moldings were studied.