Exterior deep base paint formulation

Abstract

The present invention provides increased stain resistance, tannin blocking, adhesion, and various other properties. A composition in accordance with the principles of the present invention comprises at least three binders, nanoparticle pigment, and pigmentary titanium dioxide. In one embodiment, the present invention relates to a coating on a substrate wherein the coating has three binders, nanoparticle metal oxide pigment, and pigmentary titanium dioxide. Various additives may be included to formulate paint as known in the art.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 depicts a multi-axis property graph of the test results of paint of the present invention having a satin sheen and white base, as compared to commercially available exterior satin in a white base;

FIG. 2 depicts a multi-axis property graph of the test results of flat white base paint in accordance with the principles of the present invention, as compared to a commercially available exterior flat paint in a white base;

FIG. 3 illustrates a multi-axis property graph of the test results for semi-gloss white base paint of the present invention versus a commercially-available, exterior semi-gloss paint in a white base;

FIG. 4 illustrates a multi-axis property graph for a flat white base paint of the present invention versus a second commercially available exterior flat paint in a white base;

FIG. 5 illustrates a multi-axis property graph for a satin white base paint of the present invention versus a second commercially-available, exterior satin paint in a white base;

FIG. 6 illustrates a multi-axis property graph for a semigloss deep base paint of the present invention versus a commercially-available exterior paint; and

FIG. 7 illustrates a multi-axis property graph for a satin deep base paint of the present invention versus a commercially-available exterior paint.

Claims

1. A paint composition comprising: a first primer binder of about 10 weight percent to about 22 weight percent;a first topcoat binder of about 2 weight percent to about 6 weight percent;a second topcoat binder from about 35 weight percent to about 55 weight percent; anda nanoparticle-sized metal oxide pigment of about 0.5 weight percent to about 1 weight percent.

2. The composition of claim 1, wherein the nanoparticle metal oxide pigment comprises zinc oxide.

3. The composition of claim 1, wherein the nanoparticle metal oxide pigment comprises particles having an average particle size of less than about 100 nanometers.

4. The composition of claim 3, wherein the nanoparticle metal oxide pigment comprises particles having an average particle size of between about 30 nanometers and about 65 nanometers.

5. The composition of claim 1, wherein the first primer binder consists essentially of acrylic.

6. The composition of claim 1, wherein the first topcoat binder consists essentially of acrylic.

7. The composition of claim 1, wherein the first primer binder comprises self-crosslinking polymer.

8. The composition of claim 1, wherein the first primer binder comprises a 100% acrylic binder as a primer vehicle.

9. The composition of claim 1, wherein the ratio of the first primer binder and the first topcoat binder to the second topcoat binder is about 4:1.

10. The composition of claim 1 wherein the ratio of the first primer binder and the first topcoat binder to the second topcoat binder is about 7:3.

11. The composition of claim 1, wherein the ratio of the first primer binder and the first topcoat binder to the second topcoat binder is about 3:2.

12. A process for producing a paint composition comprising the steps of: dispersing a pigment in a solvent to form a dispersion;mixing the dispersion with grind additives comprising a nanoparticle metal oxide;adding a first primer binder, a first topcoat acrylic binder, and a second topcoat acrylic binder to the dispersion; andadding letdown additives to the dispersion.

13. The process of claim 12, wherein the nanoparticle metal oxide comprises zinc oxide.

14. The process of claim 12, wherein the nanoparticle metal oxide comprises particles having an average particle size of less than 100 nanometers.

15. The process of claim 12, wherein the nanoparticle metal oxide comprises particles having an average particle size of between about 30 nanometers and about 65 nanometers.

16. The process of claim 12, wherein the step of adding the first primer binder includes adding a 100% acrylic binder.

17. The composition of claim 12, wherein the step of adding the first topcoat acrylic binder includes adding a 100% acrylic binder.

18. The composition of claim 12, wherein the first acrylic primer binder comprises a self-crosslinking polymer.

19. The composition of claim 12, wherein the second primer binder comprises a 100% acrylic binder.

20. The composition of claim 12, wherein the ratio of first primer binder and the first topcoat binder to the second topcoat binder is about 80:20.

21. A coated substrate comprising: a substrate; anda coating on the substrate having: a first binder, a second binder, and a third binder;a pigmentary-sized pigment; anda nanoparticle-sized metal oxide.

22. The coated substrate of claim 21, wherein the nanoparticle metal oxide comprises zinc oxide.

23. The coated substrate of claim 21, wherein the nanoparticle metal oxide comprises particles having an average particle size of less than 100 nanometers.

24. The coated substrate of claim 21, wherein the nanoparticle metal oxide comprises particles having an average particle size of between about 30 nanometers and about 65 nanometers.

25. The coated substrate of claim 21, wherein the first binder comprises a 100% acrylic primer binder.

26. The coated substrate of claim 21, wherein the second binder comprises a 100% acrylic topcoat binder.

27. The coated substrate of claim 21, wherein the third binder comprises a 100% acrylic topcoat binder.

28. The coated substrate of claim 21, wherein the first binder, the second binder, and the third binder, comprise self-crosslinking polymers.

29. The coated substrate of claim 21, wherein the ratio of first primer binder and the first topcoat binder to the second topcoat binder is between about 4:1 to about 3:2.

30. The coated substrate of claim 21, wherein the the first binder has a weight percent of about 10.5 to about 22.0;a second binder has a weight percent of about 2.5 to about 5.5;a third binder has a weight percent of about 39.0 to about 53.0; andthe nanoparticle-sized metal oxide has a weight percent of about 0.5 to about 1.