Patent ID: 7166362

Claim:
An insulating film formed by thermally treating a film-forming composition comprising a hydrolysis product and/or a condensation product of a compound represented by Formula (1) below: wherein at least one of P and Q is a silane coupling group represented by -L 3 -Si(R 3 ) m (OR 4 ) 3-m , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 independently denote a hydrogen atom or a hydrocarbon group having 1 to 8 carbons, m denotes 0, 1, or 2, x denotes a range of 100 to 1 mol %, y denotes a range of 0 to 99 mol %, and P and Q denote terminal groups; L 1 , L 2 , and L 3 independently denote a single bond or a divalent organic linking group, Y 1 and Y 2 independently denote —N(R 9 )(R 10 ), —OH, —NR 0 COR 9 , —CON(R 9 )(R 10 ), —OR 9 , —CONR 9 2 , —COR 9 , —CO 2 M, —COOR 9 , or —SO 3 M, in which R 0 , R 9 , and R 10 independently denote a hydrogen atom or an alkyl group having 1 to 8 carbons, R 0 and R 9 may form a ring structure, and M denotes a hydrogen atom, an alkali metal, an alkaline earth metal, or onium, wherein said insulation film is porous.