Aqueous paint compositions with soft feel and light diffusion effects

Patent metadata

Field	Value
Publication number	US-10040966-B2
Application number	US-201615147938-A
Country	US
Kind code	B2
Filing date	May 6, 2016
Priority date	May 6, 2016
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

The present invention is directed to an aqueous architectural composition comprising a low Tg (less than about −10° C. and higher than about −50° C.) acrylic emulsion polymer with at least one cross-linkable moiety, and solid polyutherane (PU) or polybutylacrylate microspheres having a mean weight diameter of less than about 40 microns and a Tg of less than about 0° C., wherein the solid PU spheres make up about 10% to about 20% by weight of the composition. The solid acrylic polymer without water and the PU spheres make up about 30% to about 40% by weight of the aqueous composition. A dried paint film formed by the inventive aqueous architectural composition can withstand at least about 500 cycles on the scrub test, and a gloss value at 60° of less than about 2.5 GU.

First claim

We claim:

1. An aqueous architectural composition comprising
an substantially acrylic emulsion polymer wherein the acrylic monomers forming the polymer have a Tg of less than about −10° C. and higher than about −50° C., wherein the acrylic emulsion polymer comprises at least one cross-linkable moiety;
a plurality of solid polyutherane (PU) spheres having a mean weight diameter of less than about 40 microns and a Tg of less than about 0° C., wherein the solid PU spheres make up about 10% to about 20% by weight of the composition, wherein the substantially acrylic emulsion polymer forms a film and wherein the plurality of solid PU spheres do not form a film; and
a sufficient amount of cross-linking agent in the aqueous phase of the composition to cross-link with the at least one cross-linkable moiety.

2. The aqueous architectural composition of claim 1 , wherein the acrylic polymer without water and the PU spheres make up about 30% to about 40% by weight of the aqueous composition.

3. The aqueous architectural composition of claim 1 , wherein the solid PU spheres make up about 12% to about 18% by weight of the aqueous composition.

4. The aqueous architectural composition of claim 3 , wherein the solid PU spheres make up about 14% to about 18% by weight of the aqueous composition.

5. The aqueous architectural composition of claim 1 , wherein the acrylic monomers have a Tg of less than about −15° C.

6. The aqueous architectural composition of claim 1 , wherein the acrylic monomers have a Tg of less than about −20° C.

7. The aqueous architectural composition of claim 1 , wherein the acrylic monomers have a Tg of less than about −25° C.

8. The aqueous architectural composition of claim 1 , wherein the mean weight diameter of the PU spheres is from about 5 microns to about 20 microns.

9. The aqueous architectural composition of claim 8 , wherein the mean weight diameter of the PU spheres is from about 7 microns to about 17 microns.

10. The aqueous architectural composition of claim 9 , wherein the mean weight diameter of the PU spheres is from about 7 microns to about 15 microns.

11. The aqueous architectural composition of claim 1 , wherein the mean weight diameter of the PU spheres is about 20 microns to about 40 microns.

12. The aqueous architectural composition of claim 11 , wherein the mean weight diameter of the PU spheres is from about 25 microns to about 35 microns.

13. The aqueous architectural composition of claim 1 , wherein the mean weight diameter of the PU spheres comprises a first mean weight average diameter from about 5 microns to about 15 microns, and a second mean weight average diameter from about 25 microns to about 35 microns.

14. The aqueous architectural composition of claim 1 , wherein the substantially acrylic emulsion polymer comprises a polymerizable polyethylene glycol monomer or a polymerizable polypropylene glycol monomer.

15. The aqueous architectural composition of claim 1 , wherein the substantially acrylic emulsion polymer comprises a methoxy polyethylene glycol methacrylate monomer.

16. The aqueous architectural composition of claim 1 , wherein the substantially acrylic emulsion polymer is selected from a group consisting of butyl acrylic and methyl methacrylate; butyl acrylic, 2-ethylhexyl acrylate and methyl methacrylate, and 2-ethylhexyl acrylate and methyl methacrylate.

17. The aqueous architectural composition of claim 1 , wherein the at least one cross-linkable moiety comprises a diacetone acrylamide (“DAAM”) monomer, a diacetone methacrylamide (DAMAM) monomer, an acetoacetoxyethyl methacrylate (AAEM) monomer or an allyl methyl acrylate (AMA) monomer.

18. The aqueous architectural composition of claim 1 , wherein the cross-linking agent in the aqueous phase of the composition comprises adipic acid dihydrazide (“ADH”).

19. The aqueous architectural composition of claim 1 , wherein the cross-linking agent in the aqueous phase of the composition comprises a hydrazone or a blocked hydrazine.

20. The aqueous architectural composition of claim 1 , wherein a ratio of the substantially acrylic emulsion polymer to PU spheres is from about 0.6 to about 1.4.

21. The aqueous architectural composition of claim 1 , wherein said sufficient amount of cross-linking agent to cross-link with the at least one cross-linkable moiety comprises at least a stoichiometric amount.

22. A dried paint film formed by the aqueous architectural composition of claim 1 that can withstand at least about 500 cycles on the scrub test.

23. A dried paint film formed by the aqueous architectural composition of claim 1 that has a gloss value at 60° of less than about 2.5 GU.

24. An aqueous architectural composition comprising
an substantially acrylic emulsion polymer wherein the acrylic monomers forming the polymer have a Tg of less than about −10° C. and higher than about −50° C., wherein the acrylic emulsion polymer comprises at least one cross-linkable moiety;
a plurality of solid polybutylacrylate spheres having a mean weight diameter of less than about 40 microns and a Tg of less than about 0° C., wherein the solid polybutylacrylate spheres make up about 10% to about 20% by weight of the composition, wherein the substantially acrylic emulsion polymer forms a film and wherein the plurality of solid polybutulacrylate spheres do not form a film; and
a sufficient amount of cross-linking agent in the aqueous phase of the composition to cross-link with the at least one cross-linkable moiety.

Assignees

• Columbia Insurance Co

Inventors

• Yang Yong
• Cooper Glenn
• Sheerin Robert
• Garcia Johanna
• Shavel Clarena

Classifications

• C09D7/69

  Particle size larger than 1000 nm · CPC title

• C09D5/02

  Emulsion paints {including aerosols} · CPC title

• C09D5/024

  characterised by the additives · CPC title

• C08L75/04

  Polyurethanes · CPC title

• C09D133/14

  of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen · CPC title