Patent ID: 7345351

Claim:
A coating composition for production of insulating film, comprising: a) an organic polysiloxane precursor having a weight-average molecular weight ranging from 500 to 30,000, and a molar ratio of hydroxy groups approximately 80% or more of the total condensable functional groups; b) an organic solvent; and c) water, wherein said organic polysiloxane precursor is prepared by hydrolyzation and condensation of one or more silane compounds selected from the group consisting of silane compounds represented by Chemical Formulae 1 to 3 below: SiR 1 p R 2 4-p [Chemical Formula 1] where R 1 is hydrogen, an aryl, a vinyl, an allyl, or a linear or branched C 1 to C 4 alkyl substituted by fluorine or unsubstituted, R 2 is a linear or branched C 1 to C 4 alkoxy, and p is an integer of 1 or 2, R 3 q R 4 3-q Si—M—SiR 5 r R 6 3-r [Chemical Formula 2] where each of R 3 and R 5 is independently hydrogen, fluorine, an aryl, a vinyl, an allyl, or a linear or branched C 1 to C 4 alkyl substituted by fluorine or unsubstituted, each of R 4 and R 6 is independently a linear or branched C 1 to C 4 alkoxy, M is a C 1 to C 6 alkylene or phenylene, and each of q and r is an integer of 0 to 2, and where R 7 is hydrogen, fluorine, an aryl, a vinyl, an allyl, or a linear or branched C 1 to C 4 alkyl substituted by fluorine or unsubstituted, R 8 is hydrogen, a hydroxy, or a linear or branched C 1 to C 4 alkoxy or —(CH 2 )a-SiR 9 R 10 (where a is 2 or 3), R 9 is fluorine, an aryl, a vinyl, an allyl, or a linear or branched C 1 to C 4 alkyl substituted by fluorine or unsubstituted, R 10 is a linear or branched C 1 to C 4 alkoxy; and each of m and n is an integer of 3 to 7.