Fluoroalkyl phosphate compositions
View Patent ↗A composition comprising a compound of formula (I) or (II): wherein r and q are independently integers of 1 to 3; R f is linear or branched chain perfluoroalkyl group having 1 to 6 carbon atoms; j is an integer 0 or 1, or a mixture thereof, x is 1 or 2, Z is —O— or —S—, X is hydrogen or M, and M is an ammonium ion, an alkali metal ion, or an alkanolammonium ion is disclosed.
1. A method of providing water repellency, oil repellency and stain resistance to a substrate comprising contacting the substrate with a composition comprising one or more compounds of formula (I) or (II):
wherein
r and q are independently integers of 1 to 3;
R f is linear or branched chain perfluoroalkyl group having 1 to 6 carbon atoms;
j is an integer 0 or 1, or a mixture thereof,
x is 1 or 2,
Z is —O— or —S—,
X is hydrogen or M, and
M is an ammonium ion, an alkali metal ion, or an alkanolammonium ion.
2. The method of claim 1 wherein the contacting is by brush, spray, roller, doctor blade, wipe, dip, foam, liquid injection, immersion or casting.
3. The method of claim 1 wherein R f has 4 to 6 carbon atoms, and r, q and j are each 1.
4. The method of claim 1 wherein M is an ammonium or an alkanolammonium ion.
5. A substrate treated according to the method of claim 1 .
6. A substrate to which has been applied a composition according to the method of claim 1 .
7. The substrate of claim 6 comprising a fibrous substrate or a hard surface substrate.
8. The substrate of claim 7 which is a fiberous substrate selected from the group consisting of wood, paper or leather.
9. The substrate of claim 7 which is a hard surface substrate selected from the group consisting of stone, glass masonry, concrete, unglazed tile, brick, porous clay, granite, limestone, grout, mortar, marble, gypsum board, terrazzo, or composite materials.