| abstract |
A surface treating composition for excluding water penetration which is a solution obtained by combining water; an alkyltrialkoxysilane selected from the group consisting of C₁ to C₆ alkyl groups on silicon and blends of alkyltrialkoxysilanes with C₁ to C₆ alkyl groups on silicon; a silane coupling agent; and an aqueous silicone emulsion of an anionically stabilized hydroxyl endblocked polydiorganosiloxane, amorphous silica and an organic tin salt. |