Water repellents containing organosilicon compounds
AssigneeDow Corning Corporation
InventorsDipak Narula, Lori A. Stark
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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 C.sub.1 to C.sub.6 alkyl groups on silicon and blends of alkyltrialkoxysilanes with C.sub.1 to C.sub.6 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.
Claims20
A composition comprising a solution obtained by combining (i) water;
- (ii) an alkyltrialkoxysilane selected from the group consisting of C.sub.1 to C.sub.6 alkyl groups on silicon and blends of alkyltrialkoxysilanes with C.sub.1 to C.sub.6 alkyl groups on silicon;
- (iii) a water soluble silane coupling agent or hydrolysis product thereof;
- and (iv) an aqueous silicone emulsion of an anionically stabilized hydroxyl endblocked polydiorganosiloxane, amorphous silica and an organic tin salt.
A method of treating a surface in order to exclude water penetration of the surface comprising applying to the surface a composition which is a solution obtained by combining (i) water;
- (ii) an alkyltrialkoxysilane selected from the group consisting of C.sub.1 to C.sub.6 alkyl groups on silicon and blends of alkyltrialkoxysilanes with C.sub.1 to C.sub.6 alkyl groups on silicon;
- (iii) a water soluble silane coupling agent or hydrolysis product thereof;
- and (iv) an aqueous silicone emulsion of an anionically stabilized hydroxyl endblocked polydiorganosiloxane, amorphous silica and an organic tin salt.
Dependencies are inferred from the claim text.