Masonry water repellent composition
AssigneeDow Corning Corporation
InventorsRobert L. Cuthbert, Edwin P. Plueddemann
Life of this patent
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Abstract
A masonry water repellent composition for treating surfaces which is an aqueous solution of a water soluble silane coupling agent and an alkyltrialkoxysilane. The alkyltrialkoxysilane is either an alkyltrialkoxysilanes with C.sub.1 to C.sub.6 alkyl groups on silicon or a blend of alkyltrialkoxysilanes each with C.sub.1 to C.sub.6 alkyl groups on silicon. A treatment method is also disclosed.
Claims18
A composition comprising an aqueous solution of a water soluble silane coupling agent and an alkyltrialkoxysilane, the alkyltrialkoxysilane being selected from the group consisting of alkyltrialkoxysilanes with C.sub.1 to C.sub.6 alkyl groups on silicon and a blend of alkyltrialkoxysilanes each with C.sub.1 to C.sub.6 alkyl groups on silicon, the volatile organic content of the aqueous solution being less than about four hundred grams per liter, the alkyltrialkoxysilane and the silane coupling agent being present in the aqueous solution in the mole ratio of between about 0.5:1.0 to about 3.0:1.0.
A method of treating a surface in order to render the surface water repellent comprising applying to the surface to be treated an aqueous solution of a water soluble silane coupling agent and an alkyltrialkoxysilane, the alkyltrialkoxysilane being selected from the group consisting of alkyltrialkoxysilanes with C.sub.1 to C.sub.6 alkyl groups on silicon and a blend of alkyltrialkoxysilanes each with C.sub.1 to C.sub.6 alkyl groups on silicon, the volatile organic content of the aqueous solution being less than about four hundred grams per liter, the alkyltrialkoxysilane and the silane coupling agent being present in the aqueous solution in the mole ratio of between about 0.5:1.0 to about 3.0:1.0.
Dependencies are inferred from the claim text.