Processable high temperature polymers prepared from amine terminated polymers and cyanamides of polyfunctional secondary amines
AssigneeCiba-Geigy Corporation
InventorsRaymond Seltzer, Paul D. Sherman
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Abstract
This invention provides compositions containing amine terminated high temperature prepolymers such as polyimides, polyamide-imides or the corresponding polyamide-acids in combination with cyanamides of polyfunctional secondary amines and the crosslinked polymers obtained therefrom. These cyanamides are reactive fluxes which facilitate processing of the high temperature prepolymer resin by lowering the softening temperature under processing conditions, and they also chain-extend and cross-link the prepolymer resin.
Claims21
A heat curable composition of matter capable of yielding a highly crosslinked, chain extended high temperature stable resin comprising:
- a. A prepolymer resin selected from a primary amine terminated polyimide, polyamide-imide, polyamide acid, polyamide-amide acid, polybenzimidazole, polypyrrone, polythiadiazole, polyquinoxaline, polybenzothiazole, polyamide, polyarylsulfone, and polyphenylenesulfide, and
- b. about 0.5 to 5.0 mole equivalents per mole of (a) of a cyanamide of a polyfunctional secondary amine.
Dependencies are inferred from the claim text.