NEW POLYMER SYSTEMS BASED ON EPOXY OLIGOM ERS AND CARDO POLYIMIDES

Interaction of epoxy oligomers based on diethylene glycol, 4,4'-dihydr oxydiphenyl-2,2-propane, 4,4'-diamino-3,3'-dichlorodiphenylmethane and m-aminobenzoic acid with a cardo polyimide derived from anilinofluore ne and 3,3',4,4'-tetracarboxybenzophenone dianhydride was studied. At temperatures above 190 degrees C, polyimide was found to cure the epox ides. It was demonstrated that modification of epoxides with polyimide ensures the preparation of polymeric materials with high thermal, str ength, and insulation characteristics. The behavior of compounds, whos e structure models the structure of the main chain of polyimide (e.g., N-phenylphthalimide and phenylphthalisoimide), was examined in the pr esence of epoxides.