Abstract A method is provided for making a curable polymeric reaction product of an organic diamine and an aliphatically unsaturated dicarbonyl compound such as an organic anhydride or organic dicarboxylic acid. The curable polymeric 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 is effected in a phenolic-liquid hydrocarbon solvent medium. The hydrocarbon can serve as an azeotroping agent to effect removal of water of reaction prior to the recovery of the reaction product of the organic diamine and the aliphatically unsaturated dicarbonyl compound. The polymeric reaction product can be molded to produce high temperature resistant polyimide films and structures.
A method in accordance with claim 1, where the arylene hydrocarbon diamine is 4,4''-diaminodiphenylmethane.
Claim 2
Dependent Claim
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A method in accordance with claim 1, where the aliphatically unsaturated organic anhydride is maleic anhydride.
Claim 3
Dependent Claim
64 words
A method in accordance with claim 1, where the aliphatically unsaturated hydrocarbon anhydride is a member selected from the group consisting of a mixture of maleic anhydride and endomethylene tetrahydrophthalic anhydride, a mixture of maleic anhydride and tetrahydrophthalic anhydride, and a mixture of maleic anhydride and up to 10 mole percent, based on the moles of hydrocarbon anhydride in said mixture of hydrocarbon dianhydride.
Claim 4
Dependent Claim
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A method in accordance with claim 1, where the arylene hydrocarbon diamine is m-phenylenediamine.
Claim 5
Dependent Claim
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A method in accordance with claim 1, where the arylene hydrocarbon diamine is a mixture of an arylene hydrocarbon diamine and an arylene hydrocarbon monoamine.