Dirt pick-up resistant composition

Patent metadata

Field	Value
Publication number	US-10723908-B2
Application number	US-201916241461-A
Country	US
Kind code	B2
Filing date	Jan 7, 2019
Priority date	Mar 15, 2013
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

Water-based compositions that are resistant to dirt pickup, efflorescence, tannin bleed-through and surfactant leaching are described. The water-based composition includes a latex or water-dispersible polymer and a non-VOC UV-VIS (preferably, ultraviolet) absorber as a dirt pickup resistance additive. Methods of making water-based compositions including a non-VOC UV-VIS absorber as an additive are also described.

First claim

What is claimed is:

1. A water-based coating composition, comprising:
a latex polymer formed from reactants comprising diacetone acrylamide; and
methyl-o-benzoyl benzoate;
wherein the latex polymer is formed from reactants comprising diacetone acrylamide in an amount of no more than 10 wt-%.

2. The composition of claim 1 wherein the latex polymer is a multi-stage latex polymer.

3. The composition of claim 2 wherein the latex polymer has at least one Tg within a range of −10° C. to 40° C.

4. The composition of claim 1 wherein methyl-o-benzoyl benzoate is present in an amount of at least 0.1 wt-% and up to 5.0 wt-%, based on the weight of the polymer solids.

5. The composition of claim 1 wherein the latex polymer is present in the coating composition in an amount of at least 10 wt-%, based on 10-25% solids of the paint for flats and 15-35% for semi-gloss paints.

6. The composition of claim 1 wherein the composition is a water-based paint, sealer, caulk, or sealant.

7. The composition of claim 6 wherein the composition is a water-based paint.

8. The composition of claim 7 wherein the composition is a water-based paint with a pigment volume concentration of 35 to 75 for a flat paint, 20 to 40 for a semi-gloss paint, and about 10 to 25 for a high gloss paint.

9. The composition of claim 7 wherein the composition is a semi-gloss paint having a paint finish that has a moderately satin-like luster and a 60° gloss rating of at least about 30 units.

10. The composition of claim 7 wherein the composition is a high-gloss paint having a paint finish that has a shiny appearance and a 60° gloss rating of at least about 70 units.

11. The composition of claim 1 wherein the composition has extractables of less than about 0.3%.

12. The composition of claim 11 wherein the composition has extractables of less than about 0.2%.

13. The composition of claim 1 wherein the composition includes no greater than 5 grams total VOC per 100 grams polymer solids.

14. The composition of claim 12 further comprising one or more low VOC coalescents having a volatile organic content of 30% or less.

15. A water-based coating composition, comprising:
a multi-stage latex polymer formed from reactants comprising diacetone acrylamide; and
methyl-o-benzoyl benzoate;
wherein the composition includes no greater than 5 grams total VOC per 100 grams polymer solids.

16. The composition of claim 15 wherein the latex polymer has at least one Tg within a range of −10° C. to 40° C.

17. The composition of claim 15 wherein methyl-o-benzoyl benzoate is present in an amount of at least 0.1 wt-% and up to 5.0 wt-%, based on the weight of the polymer solids.

18. The composition of claim 15 wherein the latex polymer is present in the coating composition in an amount of at least 10 wt-%, based on 10-25% solids of the paint for flats and 15-35% for semi-gloss paints.

19. The composition of claim 15 wherein the latex polymer is formed from reactants comprising diacetone acrylamide in an amount of no more than 10 wt-%.

Assignees

• Sherwin Williams Co

Inventors

• Sandoval Robert
• Harris James
• Hibben Mary Jane
• Balgeman Andrew
• Shaffer Christopher
• Frazee Glenn
• Wildman Michael

Classifications

• Y02A50/20

  Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters · CPC title

• C09D133/14

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

• C09D5/00

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title

• C08K5/101

  of monocarboxylic acids · CPC title

• C08L2201/54

  Aqueous solutions or dispersions · CPC title