TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The organic-type high-molecular compound (A) is high-molecular compound having triazine skeleton or fluorene structure. The high-molecular compound having triazine skeleton is obtained by polymerizing triazine compound having 2 or more nitrogen atoms substituted by hydroxymethyl group and/or alkoxymethyl group and has weight average molecular weight of 5000 or more. The triazine compound is compound having hydroxymethyl group, alkoxymethyl group, and/or ester portion at the polymeric terminal, preferably melamine compound or benzoguanamine compound. The triazine skeletons are bonded through N-CH2-N group or N-CH2-O-CH2-N group. The film-forming material further contains component (B) including triazine compound having 2 or more nitrogen atoms substituted by hydroxymethyl group and/or alkoxy methyl group, or urea compound having 2 or more nitrogen atoms substituted by hydroxymethyl group and/or alkoxymethyl group, compound (C) substituted by block isocyanate group, adherence material (D), and solvent (E) which exists in the form of a varnish. The content of component (B) with respect to 100 parts mass of the organic-type high-molecular compound (A) is 10-100 parts mass. The organic-type high-molecular compound (A) is a polymer including fluorene structure and aromatic cardo structure, and having weight average molecular weight of 5000 or more. The compound having aromatic cardo structure is bonded through structure including ether bond and thioether bond. The organic-type high-molecular compound (A) is compound having 4 or more benzene rings. The organic-type high-molecular compound (A) is a compound having sulfur-containing aromatic structure of formula (I). The content of compound (C) with respect to 100 parts mass of organic-type high molecular compound (A) is 100 parts mass. The content of adherence material (D) with respect to 100 mass parts of organic-type high-molecular compounds (A) is less than 10 parts mass. The adherence material contains silicon-containing compound of formula:R14-Z-Si(-R13)(-R11)-R12 (II).R1-R10=H, 1-10C alkyl, 1-10C haloalkyl, 1-10C alkoxy, halo, nitro, formyl, cyano, amino, carboxy, phosphonyl, sulfonyl, or phenyl, furyl, naphthyl or thienyl (all optionally substituted by W8), in which at least one of R1-R5 and R6-R10 is -S- group;W8=1-10C alkyl, 1-10C haloalkyl, 1-10C alkoxy, hydroxy, halo, nitro, formyl, cyano, carboxy, phosphonyl, or sulfonyl;R11-R14=1-10C alkyl, 1-10C haloalkyl, 1-10C alkoxy, halo, nitro, formyl, cyano, amino, carboxy, phosphonyl, sulfonyl, hydroxy, vinyl, allyl, thiol, glycidyl, or furyl, phenyl, naphthyl or thienyl (all optionally substituted by W8);Z=single bond, -C(O)O-, -C(O)NH-, -O-, -S-, -S(O)2-, -C(O)- or 1-10C alkylene optionally substituted by W9;andW9=1-10 alkyl, 1-10C haloalkyl or 1-10C alkoxy.