Fluorinated copolymers
A stain resistant, oil and water repellent composition comprising a copolymer prepared from fluorinated methacrylate, carbonate methacrylate, and methacrylic acid or salt thereof, a method of providing stain resistance, oil and water repellency to substrates, and a treated substrate.
1. A composition comprising formula (I)
wherein
R f is C 2 to C 10 fluoroalkyl, optionally interrupted by one or more —O—, —CH 2 —, —CFH—, or combinations thereof;
n is an integer from 1 to 10;
A is a linear, branched, or cyclic carbonate of formula
wherein m is 1 to 10 and R 2 is a C 1 to C 10 linear, branched or cylic alkyl or aryl;
M + is H + , NH 4 + , Na + , Li + , Cs + , K + , or mixtures thereof;
a is 20 to 80 mol %;
b is 5 to 80 mol %; and
c is 0 to 70 mol %;
wherein the sum of a+b+c is equal to 100%.
2. A composition of claim 1 , wherein a is 20 to 80 mol %; b is 20 to 80 mol %; and c is 0 mol %.
3. A composition of claim 2 , wherein R f is C 4 to C 8 , n is 2 to 6, a is 35 to 60 mol %, b is 40 to 70 mol % and c is 0 mol %.
4. A composition of claim 1 , wherein M + is H, a is 20 to 60 mol %; b is 5 to 50 mol %; and c is 25 to 70 mol %.
5. A composition of claim 4 , wherein R f is C 4 to C 8 , n is 2 to 6, a is 30 to 45 mol %, b is 10 to 35 mol %, and c is 30 to 45 mol %.
6. A composition of claim 1 , wherein M + is NH 4 + , Na + , Li + , Cs + , K + , or mixtures thereof, a is 20 to 60 mol %; b is 5 to 50 mol %; and c is 25 to 70 mol %.
7. A composition of claim 6 , wherein R f is C 4 to C 8 , n is 2 to 6, a is 30 to 45 mol %, b is 10 to 35 mol %, and c is 30 to 45 mol %.
8. A composition of claim 1 , wherein the composition is in the form of a dispersion.
9. A composition of claim 2 wherein the composition is in the form of an organic dispersion.
10. A composition of claim 4 wherein the composition is in the form of an organic dispersion.
11. A composition of claim 6 wherein the composition is in the form of an aqueous dispersion.
12. A method of providing water repellency, oil repellency and stain resistance to a substrate surface comprising contacting the substrate surface with a copolymer of Formula I
wherein
R f is C 2 to C 10 fluoroalkyl, optionally interrupted by one or more —O—, —CH 2 —, —CFH—, or combinations thereof;
n is an integer from 1 to 10;
A is a linear, branched, or cyclic carbonate;
M + is H + , NH 4 + , Na + , Li + , Cs + , K + or mixtures thereof;
a is 20 to 80 mol %;
b is 5 to 80 mol %; and
c is 0 to 70 mol %,
wherein the sum of a+b+c is equal to 100%;
to provide stain resistance, oil and water repellency.
13. A method of claim 12 wherein the copolymer of Formula I is in the form of a dispersion.
14. A method of claim 12 wherein the contacting is by brushing, spraying, rollering, dipping, padding, doctor blade, wipe, dip techniques, or wet-on-wet procedure.
15. A method of claim 11 wherein the substrate is unglazed concrete, brick, tile, stone, grout, mortar, composite materials, gypsum board, marble, statuary, monuments, or wood.
16. A method of claim 11 wherein the substrate is woven and nonwoven fibers, yarns, fabrics, fabric blends, textiles, nonwovens, paper, leather, rugs or carpets.
17. A method of claim 16 , where the substrate is cotton, cellulose, wool, silk, polyamide, polyester, polyolefin, polyacrylonitrile, polypropylene, rayon, nylon, aramid, or acetate.
18. A substrate treated with a method of claim 11 , which is unglazed concrete, brick, tile, stone, grout, mortar, composite materials, gypsum board, marble, statuary, monuments, or wood.
19. A substrate treated with a method of claim 11 , which is woven and nonwoven fibers, yarns, fabrics, fabric blends, textiles, nonwovens, paper, leather, rugs or carpets.
20. A substrate treated with a method of claim 19 , which is cotton, cellulose, wool, silk, polyamide, polyester, polyolefin, polyacrylonitrile, polypropylene, rayon, nylon, aramid, or acetate.