NOVELTY - A resin composition contains partial block polyimide polysiloxane copolymer (A) having carbonyl group-containing repeating unit (1 and 2), spherical metal oxide microparticles (B) having average particle diameter of 0.05-10 mu m, organic solvent (C), epoxy resin (D) having 2 epoxy groups or more in one molecule, and hardening agent (E) which provides hardening effective dose for epoxy resin (D). The content of spherical metal oxide microparticles is 5-350 mass parts with respect to 100 mass parts of partial block polyimide polysiloxane copolymer (A).    USE - Resin composition is used for polyimide-type screen printing used for formation of electroconductive film, protective film of glass fiber, surface-protective film of solar cell, ( alpha )-ray shielding film of very large scale integrated circuit and interlayer insulation film.    ADVANTAGE - A resin composition has high adhesiveness and heat resistance, and provides favorable performance of low elasticity rate.    DETAILED DESCRIPTION - A resin composition contains partial block polyimide polysiloxane copolymer (A) having carbonyl group-containing repeating unit of formulae (1 and 2), spherical metal oxide microparticles (B) having average particle diameter of 0.05-10 mu m, organic solvent (C), epoxy resin (D) having 2 epoxy groups or more in one molecule, and hardening agent (E) which provides hardening effective dose for epoxy resin (D). The content of spherical metal oxide microparticles is 5-350 mass parts with respect to 100 mass parts of partial block polyimide polysiloxane copolymer (A). The total content of epoxy resin (D) and hardening agent (E) is 1-900 mass parts with respect to 100 mass parts of partial block polyimide polysiloxane copolymer (A).    X=tetravalent organic group containing aromatic ring or aliphatic ring;    Y1=divalent organic group;    Y2=divalent organic group of formula: -R1-(Si(-R2)(-R3)-O)n-Si(-R2)(R3)-R1- (3);    k,m=1-50;    R1=3-9C divalent organic group;    R2,R3=optionally substituted 1-8C monovalent hydrocarbyl;and    n=1-150.    The molar ratio of Y2 with respect to sum of Y1 and Y2 is 0.01-0.8.