Polyimides prepared from amine terminated prepolymers and olefin containing anhydrides

Claim 1

A polymer selected from (a) the reaction product of (1) amine terminated prepolymer prepared by reacting a material selected from dicarboxylic acid, dicarboxylic acid anhydride, tricarboxylic acid and tricarboxylic acid anhydride with simple polyamine having the formula I X --R"--NH.sub.2).sbsb.n where R" is an organic radical, n is at least 2 and X is selected from hydrogen, amino group, substituted organic groups and unsubstituted organic groups and (2) simple olefin selected from the group consisting of ##STR6## where D is an aliphatically unsaturated divalent organic radical and ##STR7## where R'" is a group containing at least two carbon atoms and D is as above, (b) the reaction product of (1) olefin terminated prepolymer prepared by reacting the amine terminated prepolymer of (a) above with simple olefin selected from the olefins of Formulas II and III above and (2) simple polyamine as in Formula I above, (c) the reaction product of amine terminated prepolymer as in (a) above and olefin terminated prepolymer as in (b), about equivalent proportions of the polymer forming reactants being used.