Polyimide, polyamide-imide or polyamide-acids with olefin end groups in combination with a reactive Schiff base compound

摘要

This invention provides compositions containingP PA. a polyimide and polyamide-imide terminated with olefinic unsaturated end groups, or the corresponding polyamide-acids in combination with a reactive Schiff base compound, andPPB. a polyimide and polyamide-imide terminated with a Schiff base end group or the corresponding polyamide acids in combination with a reactive N,N'- bis- imide.PPThese Schiff bases and N,N'-bis-imide compounds facilitate processing of the prepolymer resins by lowering the softening temperature, under processing conditions, and chain-extend and cross-link the base resins.