Water-based compositions that resist dirt pick-up

Patent metadata

Field	Value
Publication number	US-11976207-B2
Application number	US-202217705807-A
Country	US
Kind code	B2
Filing date	Mar 28, 2022
Priority date	Mar 15, 2013
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

Water-based compositions containing a low VOC coalescent, a latex or water-dispersible polymer, and a water-insoluble UV-VIS (preferably, ultraviolet) absorber.

First claim

What is claimed is:

1. A water-based composition, comprising:
a latex polymer;
methyl-o-benzoyl benzoate; and
one or more low VOC coalescents having a volatile organic content of 30% or less, or that elute from a GC column at the same time or after methyl palmitate under the same conditions;
wherein the composition includes no greater than 50 grams of total VOC per 100 grams polymer solids.

2. The composition of claim 1 wherein the latex polymer has at least one Tg within a range of −20° C. to 70° C.

3. The composition of claim 1 wherein the latex polymer comprises the polymerization product of ethylenically unsaturated monomers selected from the group of alkyl acrylates, alkoxy acrylates, alkyl methacrylates, alkoxy methacrylates, vinyl esters of saturated carboxylic acids, monoolefins, and conjugated dienes optionally with one or more monomers, selected from the group of styrene, methyl methacrylate, butyl acrylate, 2-ethylhexyl acrylate, vinyl acetate, acrylonitrile, and vinyl chloride.

4. The composition of claim 1 wherein the latex polymer comprises a surfactant and polymer particles comprising a homopolymer or copolymer including at least one of an acrylate or a methacrylate.

5. The composition of claim 1 wherein the water-based composition comprises at least 0.1 wt-% of methyl-o-benzoyl benzoate, based on the weight of the polymer solids.

6. The composition of claim 1 wherein the water-based composition comprises up to 5.0 wt-% of methyl-o-benzoyl benzoate, based on the weight of the polymer solids.

7. The composition of claim 1 wherein the one or more coalescents are present in a sufficient amount to facilitate the formation of a polymer film of the latex polymer at a temperature of less than 25° C.

8. The composition of claim 1 wherein the composition includes no greater than 20 grams of total VOC per 100 grams polymer solids.

9. The composition of claim 1 wherein the latex polymer is present in an amount of 10 wt-% to 25 wt-%, based on solids.

10. The composition of claim 1 which is a paint.

11. A water-based composition, comprising:
a latex polymer, having at least one Tg within a range of −20° C. to 70° C.;
methyl-o-benzoyl benzoate in an amount of 0.1 wt-% to 5.0 wt-%, based on the weight of the polymer solids; and
one or more low VOC coalescents that elutes from a GC column at the same time or after methyl palmitate under the same conditions;
wherein the composition includes no greater than 20 grams of total VOC per 100 grams polymer solids.

12. The composition of claim 11 wherein the latex polymer has at least one Tg within a range of −10° C. to 30° C.

13. The composition of claim 11 wherein the latex polymer comprises the polymerization product of ethylenically unsaturated monomers comprising acetoacetyl ethyl methacrylate (AAEM), diacetone acrylamide, or mixtures thereof.

14. The composition of claim 11 wherein the latex polymer comprises a surfactant and polymer particles comprising a copolymer including at least one of an acrylate or a methacrylate.

15. The composition of claim 11 wherein the water-based composition comprises at least 0.1 wt-% of the one or more UV-VIS absorbers, based on the weight of the polymer solids.

16. The composition of claim 11 wherein the water-based composition comprises at least 0.3 wt-% and up to 1.5 wt-% of methyl-o-benzoyl benzoate, based on the weight of the polymer solids.

17. The composition of claim 11 wherein the composition includes no greater than 10 grams of total VOC per 100 grams polymer solids.

18. The composition of claim 11 wherein the latex polymer is present in an amount of 10 wt-% to 25 wt-%, based on solids.

19. The composition of claim 17 which is a paint.

20. The composition of claim 11 wherein the composition does not include benzophenone.

21. The composition of claim 1 comprising a sufficient amount of methyl-o-benzoyl benzoate to improve dirt pick-up resistance of the composition by at least 10%, relative to the same composition without the methyl-o-benzoyl benzoate, based on a change in ΔE values.

22. The composition of claim 1 comprising a sufficient amount of methyl-o-benzoyl benzoate to improve dirt pick-up resistance of the composition by at least 50%, relative to the same composition without the methyl-o-benzoyl benzoate, based on a change in ΔE values.

23. The composition of claim 11 wherein the methyl-o-benzoyl benzoate improves dirt pick-up resistance of the composition by at least 10%, relative to the same composition without the methyl-o-benzoyl benzoate, based on a change in ΔE values.

24. The composition of claim 11 wherein the methyl-o-benzoyl benzoate improves dirt pick-up resistance of the composition by at least 50%, relative to the same composition without the methyl-o-benzoyl benzoate, based on a change in ΔE values.

Assignees

• Swimc Llc

Inventors

• Hibben Mary Jane
• Wildman Mike
• Killilea T Howard
• Harvey Iain

Classifications

• C09D133/00 Primary

  Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers · CPC title

• C08K5/053

  Polyhydroxylic alcohols · CPC title

• C08K5/07

  Aldehydes; Ketones · CPC title

• C08K5/10

  Esters; Ether-esters · CPC title

• C08K5/103

  with polyalcohols · CPC title