Process for making polyimide prepolymer and product produced thereby
Abstract
Abstract A METHOD IS PROVIDED FOR MAING A CURABLE PREPOLYMERIC REACTION PRODUCT OF AN ORGANIC DIAMINE AND AN ALIPHATICALLY UNSATURATED DICARBONYL COMPOUND, SUCH AS AN ORGANIC ANHYDRIDE OR ORGANIC DICARBOXYLIC ACID. THE CURABLE PREPOLYMERIC REACTION PRODUCT CAN BE HEAT SOFTENED TO ALLOW INCORPORATION OF FILLER AND IS CONVERTIBLE TO THE INFUSIBLE STATE BY HEAT OR BY THE EMPLOYMENT OF A FREE RADICAL INITIATOR. REACTION OF THE ORGANIC DIAMINE AND THE ALIPHATICALLY UNSATURATED DICARBONYL COMPOUND I EFFECTED IN A PHENOLIC SOLVENT MEDIUM. A HYDROCARBON SOLVENT OPTIONALLY CAN SERVE TO FACILITATE REMOVAL OF WATER OF REACTION PRIOR TO THE RECOVERY OF THE REACTION PRODUCT OF THE ORGANIC DIAMINE AND THE ALUPHATICALLY UNSATURATED DICARBONYL COMPOUND. THE PREPOLYMERIC REACTION PRODUCT CAN BE MOLDED TO PRODUCE HIGH TEMPERATURE RESISTANT POLYIMIDE FILMS AND STRUCTURES.
Inventors
- 👤 F Holub
- 👤 J Hoback
Bibliographic Details
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