Dow Corning Corporation

Robert L Cuthbert

Edwin P Plueddemann

A 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 treatmetn method for wood and masonry is disclosed.

Aqueous silane water repellent compositions

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.

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Bay City, MI, United States of America

Robert L Cuthbert