Masonry stain resistance agents

Abstract

A method of treating a substrate comprising providing stain resistance to a substrate by contacting the substrate with a composition comprising a mixture, of A) an anionic aqueous fluoroalkyl phosphate solution, and B) a cationic copolymer of fluoroalkyl(meth)acrylate or perfluoroalkylether(meth)acrylate.

Description

Claims

1. A method of treating a substrate comprising providing stain resistance to a substrate by contacting the substrate with a composition comprising an aqueous first mixture of A. an anionic aqueous fluoroalkyl phosphate solution comprising1) a second mixture of mono(perfluoroalkyl) phosphate and bis(perfluoroalkyl) phosphate of Formula IA, [Rf—(O)j]x—P(O)—(O−X+)(3-x)   Formula 1A

2. The method of claim 1 wherein the fluoroalkyl phosphate solution of component A is a mixture of mono(perfluoroalkyl) phosphate and bis(perfluoroalkyl) phosphate of Formula IA.

3. The method of claim 1 wherein the copolymer of component B is a copolymer prepared by copolymerization of formula 2A and formula 2B.

4. The method of claim 3 wherein component B is a copolymer of perfluoroalkylethyl(meth)acrylate, and dialkylaminoalkyl(meth)acrylate.

5. The method of claim 1 wherein the contacting is by brush, spray, roller, doctor blade, wipe and dip techniques.

6. The method of claim of claim 5 wherein the contacting comprises application of one or more coats of the composition to the substrate.

7. The method of claim 5 wherein the substrate is unglazed concrete, brick, tile, stone, granite, limestone, grout, mortar, composite materials, terrazzo, gypsum board, marble, statuary, monuments, or wood.

8. The method of claim 1 wherein the ratio of fluorophosphates solids to fluorocopolymer solids is from about 95:5 to about 5:95.

9. The method of claim 1 wherein the ratio of fluorophosphates solids to fluorocopolymer solids is from about 95:5 to about 50:50.

10. A substrate treated with the method of claim 1 which is unglazed concrete, brick, tile, stone, granite, limestone, grout, mortar, composite materials, terrazzo, gypsum board, marble, statuary, monuments, or wood.