Composition and method to provide stain release and stain repellency properties to substrates

Patent metadata

Field	Value
Publication number	US-9382504-B2
Application number	US-201313938711-A
Country	US
Kind code	B2
Filing date	Jul 10, 2013
Priority date	Dec 19, 2008
Publication date	Jul 5, 2016
Grant date	Jul 5, 2016

Abstract

The present invention provides a composition for treatment, the composition comprising a fluorinated compound and a phosphate ester having at least one hydrocarbon residue having at least 6 carbon atoms. There is further provided a method of treatment applying the composition to a substrate.

First claim

The invention claimed is:

1. A method of treating a substrate, comprising applying a composition to at least part of a hard surface of a substrate, wherein the composition comprises a fluorinated compound and a phosphate ester;
wherein the fluorinated compound corresponds to one of the following formulas:
[(A) m -L] n R or (A) m [L-R] n

wherein m is a value of 1 to 4, n is a value of 1 to 4, L represents a linking group, R is an aliphatic group and A is a fluorinated residue of the formula:

wherein a has a value of 1 to 100, b has a value of 0 to 100 with the sum of a and b being at least 2, R 1 and R 2 each independently represent H or an alkyl group of 1 to 4 carbon atoms, Q and Q′ each independently represent a covalent bond or an organic linking group, Rf represents a fluoroaliphatic group, Rh represents a non-fluorinated group and X 1 is H or the residue of a free radical initiator;
wherein the phosphate ester corresponds to the general formula:

wherein R 1 and R 2 each independently represent a hydrocarbon group of at least 6 carbon atoms, X represents a hydrocarbon linking group, z has a value of 1 to 5 and M represents a monovalent cation; and
wherein the hard surface of the substrate is natural or man-made stone.

2. The method according to claim 1 wherein said fluorinated compound and phosphate ester are dispersed or dissolved in an aqueous medium.

3. The method according to claim 1 wherein said phosphate ester is a salt of a mono- or dialkyl phosphate ester acid wherein the alkyl group or groups each have at least 6 carbon atoms.

4. The method according to according to claim 1 wherein the amount of solids in the composition is between 0.5% and 60%.

5. The method according to according to claim 1 wherein the weight ratio of said fluorinated compound to said phosphate ester is between 90% and 10%.

6. The method according to according to claim 1 wherein the fluorinated compound comprises one or more perfluorinated hydrocarbon residues having at least 3 carbon atoms.

7. The method according to claim 6 wherein the perfluorinated hydrocarbon residues have 4 carbon atoms each.

8. The method according to claim 1 wherein the fluorinated compound comprises an oligomeric residue of the formula:
G-(M f ) i -(M h ) j -S—

wherein G represents H or a residue of a free radical initiator, M f represents a unit deriving from a fluorinated monomer, M h represents a unit of a non-fluorinated monomer, i has a value of 1 to 20 and j has a value of 0 to 20 with the proviso that the sum of i+j is at least 2.

9. The method according to claim 1 wherein the composition provides stain release or stain repellence properties to the natural or man-made stone.

10. The method according to claim 9 wherein the stain release or stain repellence properties are against stains selected from the group of stains caused by oils, food dressings, wine, coffee, tea, and soft drinks.

11. A method of treating at least part of a hard surface of a natural or man-made stone substrate, comprising applying a composition to at least part of a surface of the substrate, wherein the composition comprises a fluorinated compound and a phosphate ester having the general formula:

wherein R 1 and R 2 each independently represent a hydrocarbon group of at least 6 carbon atoms, X represents a hydrocarbon linking group, z has a value of 1 to 5 and M represents a monovalent cation; and
wherein the fluorinated compound corresponds to one of the following formulas:
[(A) m -L] n R or (A) m [L-R] n

wherein m is a value of 1 to 4, n is a value of 1 to 4, L represents a linking group, R is an aliphatic group and A is a fluorinated residue of the formula:

wherein a has a value of 1 to 100, b has a value of 0 to 100 with the sum of a and b being at least 2, R 1 and R 2 each independently represent H or an alkyl group of 1 to 4 carbon atoms, Q and Q′ each independently represent a covalent bond or an organic linking group, Rf represents a fluoroaliphatic group, Rh represents a non-fluorinated group and X 1 is H or the residue of a free radical initiator.

12. The method according to claim 11 wherein the fluorinated compound comprises an oligomeric residue of the formula:
G-(M f ) i -(M h ) j -S—

wherein G represents H or a residue of a free radical initiator, M f represents a unit deriving from a fluorinated monomer, M h represents a unit of a non-fluorinated monomer, i has a value of 1 to 20 and j has a value of 0 to 20 with the proviso that the sum of i+j is at least 2.

13. A method of treating at least part of a hard surface of a natural or man-made stone substrate, comprising applying a composition to at least part of the hard surface of the substrate, wherein the composition comprises a fluorinated compound and a phosphate ester having the general formula:

wherein R 1 and R 2 each independently represent a hydrocarbon group of at least 6 carbon atoms, X represents a hydrocarbon linking group, z has a value of 1 to 5 and M represents a monovalent cation; and;
wherein the fluorinated compound corresponds to one of the following formulas:
[(A) m -L] n R or (A) m [L-R] n

wherein m is a value of 1 to 4, n is a value of 1 to 4, L represents a linking group, R is an aliphatic group and A is a fluorinated residue of the formula:

wherein a has a value of 1 to 100, b has a value of 0 to 100 with the sum of a and b being at least 2, R 1 and R 2 each independently represent H or an alkyl group of 1 to 4 carbon atoms, Q and Q′ each independently represent a covalent bond or an organic linking group, Rf represents a fluoroaliphatic group, Rh represents a non-fluorinated group and X 1 is H or the residue of a free radical initiator, and
wherein the fluorinated compound comprises an oligomeric residue of the formula:
G-(M f ) i -(M h ) j -S—

wherein G represents H or a residue of a free radical initiator, M f represents a unit deriving from a fluorinated monomer, M h represents a unit of a non-fluorinated monomer, i has a value of 1 to 20 and j has a value of 0 to 20 with the proviso that the sum of i+j is at least 2.

Assignees

• 3M Innovative Properties Co

Inventors

• Coppens Dirk M
• Doelen Leonardus A M

Classifications

• B05D2203/30

  Other inorganic substrates, e.g. ceramics, silicon · CPC title

• C04B41/009 Primary

  characterised by the material treated · CPC title

• B05D5/083

  involving the use of fluoropolymers · CPC title

• C09D5/1637

  Macromolecular compounds · CPC title

• C04B41/4846

  Perfluoro-compounds · CPC title