SILOXANE MASONRY WATER REPELLENT EMULSIONS

摘要

A water repellent composition for treating porous substrates with an emulsion containing a siloxane. The siloxane can be a copolymer such as a linear methylhydrogen- methylalkylsiloxane copolymer or a methylhydrogen-methylalkyl cyclosiloxane copolymer. The emulsion includes from about twenty to about sixty percent by weight of the siloxane copolymer. A low volatile organic content masonry coating is provided.