Binder composition and a paint formulation made thereof

Patent metadata

Field	Value
Publication number	US-10017657-B2
Application number	US-201415502546-A
Country	US
Kind code	B2
Filing date	Sep 9, 2014
Priority date	Sep 9, 2014
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

The present invention provides a binder composition comprising a first binder comprising by dry weight based on total dry weight of the first binder, from 5% to 98% of polymer particles, from 0.3% to 10% of a first polysaccharide, from 0.01% to 5% of a crosslinker, from 0.3% to 6% of a water-soluble metal cation, and from 0.05% to 3% of a cationic polyelectrolyte. The binder composition may further comprise a second binder comprising by dry weight based on total dry weight of the second binder, from 0.3% to 20% of the first polysaccharide, from 0.5% to 20% of a second polysaccharide. And in that case, the wet weight ratio of the first binder to the second binder is from 1:20 to 20:1. The present invention further provides a paint formulation comprising the binder composition.

First claim

What is claimed is:

1. A binder composition comprising a first binder comprising by dry weight based on total dry weight of the first binder, from 5% to 98% of polymer particles, from 0.3% to 10% of a first polysaccharide, from 0.01% to 5% of a crosslinker, from 0.3% to 6% of a water-soluble metal cation, and from 0.05% to 3% of a cationic polyelectrolyte.

2. The binder composition according to claim 1 wherein the polymer particles further comprises by dry weight based on total dry weight of the polymer particles, from 0.1% to 10% of an ethylenically unsaturated monomer carrying at least one functional group.

3. The binder composition according to claim 1 wherein the first polysaccharide is selected from guar gum and guar derivatives.

4. The binder composition according to claim 1 wherein the crosslinker is selected from organotitanate compounds, organozirconate compounds, and any combination thereof.

5. The binder composition according to claim 1 wherein the water-soluble metal cations are selected from calcium ions, zinc ions, aluminum ions, magnesium ions, ferric ions, barium ions, and any combination thereof.

6. The binder composition according to claim 1 wherein the cationic polyelectrolytes are selected from poly(N,N-dimethylacrylamide), polyamine, cationic polyacrylamide, polyamidine, polyvinylamidine, any derivatives thereof, and any combination thereof.

7. The binder composition according to claim 1 further comprising a second binder comprising by dry weight based on total dry weight of the second binder, from 0.3% to 20% of the first polysaccharide and from 0.5% to 20% of a second polysaccharide.

8. The binder composition according to claim 7 wherein the wet weight ratio of the first binder to the second binder is from 1:20 to 20:1.

9. The binder composition according to claim 7 wherein the second polysaccharide is selected from methylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose, alginate, and any combination thereof.

10. The binder composition according to claim 7 wherein the second binder further comprises by dry weight based on total dry weight of the second binder, from 1% to 80% of pigment particles.

11. The binder composition according to claim 1 wherein the first binder further comprises by dry weight based on total dry weight of the first binder, from 0.05% to 10% of clay.

12. The binder composition according to claim 1 wherein the first binder further comprises by dry weight based on total dry weight of the first binder, from 1% to 50% of extender particles.

13. The binder composition according to claim 1 wherein the first binder further comprises by dry weight based on total dry weight of the first binder, from 0.05% to 5% of a thickener.

14. The binder composition according to claim 1 further comprising by dry weight based on total dry weight of the binder composition, from 0.01% to 20% of at least one colorant.

15. A paint formulation comprising the binder composition of claim 1 .

16. The binder composition according to claim 7 wherein at least one of the first binder and the second binder further comprises by dry weight based on total dry weight of the binder, from 0.05% to 10% of clay.

17. The binder composition according to claim 7 wherein at least one of the first binder and the second binder further comprises by dry weight based on total dry weight of the binder, from 1% to 50% of extender particles.

18. The binder composition according to claim 7 wherein at least one of the first binder and the second binder further comprises by dry weight based on total dry weight of the binder, from 0.05% to 5% of a thickener.

19. The binder composition according to claim 7 further comprising by dry weight based on total dry weight of the binder composition, from 0.01% to 20% of at least one colorant.

20. A paint formulation comprising the binder composition of claim 7 .

Assignees

• Dow Global Technologies Llc
• Rohm & Haas

Inventors

• Zhang Shiling
• Yun Dong
• Wang Yujiang
• Wang Caifeng
• Jiang Siyuan

Classifications

• C08L2205/03

  containing three or more polymers in a blend · CPC title

• C09D125/14 Primary

  with unsaturated esters · CPC title

• C08L2205/035

  containing four or more polymers in a blend · CPC title

• C08L25/14

  with unsaturated esters · CPC title

• C09J125/14

  with unsaturated esters · CPC title