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AssigneeChemRex Inc.
InventorsPaul David Fisher, Feifei Lin, Lori Ann Stark-Kasley
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A composition for rendering surfaces water repellent is formed by combining water or a solvent; a methylhydrogensiloxane polymer or copolymer; an alkoxysilane having the formula RaSi(OR′)4−a in which R represents an alkyl group containing 1-10 carbon atoms, an alkenyl group containing 2-8 carbon atoms, an aryl group, or an haloalkyl group, a has a value of 1 or 2, and R′ represents an alkyl group containing 1-6 carbon atoms; and a silicone resin. The composition can also contain other components such as a volatile methyl siloxane, a cationic oil-in-water emulsion of an aminofunctional polydimethylsiloxane, a surfactant, a catalyst, a beading agent, an organic wax, a preservative, an antifoam, a mildewcide, an UV absorber/UV light stabilizer, or a freeze-thaw additive.
A method of treating the surface of a mineral substrate used in the construction industry selected from the group consisting of brick, cured concrete, sewer pipe, hollow block, cured mortar, stucco, decorative stone, roofing tile, highway surfaces, bridges, concrete, stone brick building exteriors, brick building exteriors, footings, and retaining walls, by applying to the surface of the mineral substrate a composition comprising a mixture formed by combining (i) water or a solvent;
Dependencies are inferred from the claim text.