Patent ID: 7754003

Claim:
A coating composition comprising: a polyalkylsilazane compound; an acetoxysilane compound; and an organic solvent; where said polyalkylsilazane compound contains one or both groups represented by formulae (2) and (3) wherein R 5 to R 11 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, provided that both R 5 and R 6 do not simultaneously represent hydrogen and all of R 9 to R 11 do not simultaneously represent hydrogen, and further where the acetoxysilane compound is selected from tetraacetoxysilane, methyltriacetoxysilane, ethyltriacetoxysilane, ethoxytriacetoxysilane, isopropoxytriacetoxysilane, n-butoxytriacetoxysilane, dimethyldiacetoxysilane, diethyldiacetoxysilane, diisopropyldiacetoxysilane, di-n-butyldiacetoxysilane, dimethoxydiacetoxysilane, diethoxyacetoxysilane, diisopropoxydiacetoxysilane, and di-n-butoxydiacetoxysilane, and further where the composition comprises a pore forming agent, and where the pore agent is a siloxy-containing polyethylene oxide compound.