| abstract |
A coating composition which comprises (A) a solution comprising a silicone oligomer having an average structural unit represented by R<1>nSiOx/2(OH)y(OR<2>)z (R<1> represents an alkyl group having 1 to 3 carbon atoms, vinyl group or phenyl group, R<2> represents an alkyl group having 1 to 3 carbon atoms, a plurality of R<1> or R<2> may represent the same group or different groups and n, x, y and z represent numbers satisfying relations of: 0.8</=n</=1.7, 2<x<3.2, y>0, z>0 and y+z=4-n-x) and (B) a latently acidic catalyst. By using the coating composition, a coating film of an organopolysiloxane exhibiting excellent chemical durability such as water resistance and resistance to boiling water can be obtained from a solution comprising a silicone oligomer which is obtained by hydrolysis and polycondensation of an alkoxysilane. |