Patent ID: 7320830

Claim:
A non-flammable heat-resistant resin composition, comprising: (A) modified polyamideimide resin, (B) thermosetting resin and (C) organic phosphorus-based compound, wherein a cured film, obtained from the non-flammable heat-resistant resin composition, exerts a storage elastic modulus of 700 MPa or less, a coefficient of thermal expansion of 5×10 −3 /K or less and an internal stress of 20 MPa or less, in a temperature range of 25 to 250° C., and wherein the (A) modified polyamideimide resin is a modified polyamideimide resin that is obtained by allowing a mixture containing diimide dicarboxylic acid, represented by the following formula 1, formula 2 and formula 3 obtained through a reaction between a mixture of diamine having three or more aromatic rings, polyoxypropylene diamine and siloxane diamine, and trimellitic anhydride; [in the formula, R 1 represents: (where X represents [in the formula, R 2 represents: (where n represents an integer of 1 to 70),] [in the formula, R 3 represents: (where R 4 and R 5 independently represent divalent organic groups, each of R 6 to R 9 independently represents an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 18 carbon atoms, and m represents an integer of 1 to 50)] and aromatic dicarboxylic acid, represented by the following formula 4, to coexist; HOOC —R 10 —COOH (Formula 4) [in the formula, R 10 represents: and by also allowing aromatic diisocyanate, represented by the following formula 5, to react with the mixture NCO —R 11 —NCO (Formula 5) [in the formula, R 11 represents: