Patent ID: 7625636

Claim:
An insulating-film forming composition comprising: a coating solvent, and at least one of: (i) a dendrimer having a core portion and a branched end, and (ii) a polymer of the dendrimer; wherein the dendrimer is represented by formula (1): wherein R 1 to R 8 each independently represents an alkyl, alkenyl or aryl group or a substituent represented by formula (2) with the proviso that at least one of R 1 to R 8 is a substituent represented by formula (2): wherein L 1 represents an alkylene group, —O— or —Si(R 11 )(R 12 )— or a divalent linking group which is a combination thereof; R 11 and R 12 each independently represents an alkyl group; R 9 represents an alkyl or aryl group; and i represents an integer of from 1 to 10, and wherein when i represents 1, the substituent represented by formula (2) is A 1 represented by formula (3): wherein a represents 2 or 3; and R 10 represents an alkenyl or alkynyl group, with the proviso that where a plurality of L 1 's, R 9 's or R 10 's are present, the plurality of L 1 's, R 9 's or R 10 's may be the same or different; and the coating solvent is at least one selected from the group consisting of acetone, propanol, cyclohexanone, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, methyl lactate, ethyl lactate, γ-butyrolactone, anisole, mesitylene and 1,2-dichlorobenzene.