Back to results
US 11,377,571 B2Granted
Dirt pick-up resistant composition
OwnerRobert Sandoval, James Harris +5inventors
InventorsRobert Sandoval, James Harris, Mary Jane Hibben, Andrew Balgeman, Christopher Shaffer, Glenn Frazee, Michael Wildman
Life of this patent
Estimating the term…
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.
Claims21
A water-based coating composition, comprising:
- a latex polymer having at least one Tg within a range of −10° C. to 40° C., wherein the latex polymer is derived by polymerization in a single stage emulsion process, the emulsion comprising:
- 20 to 60 wt-% methyl methacrylate;
- 0 to 40 wt-% 2-ethyl hexyl acrylate;
- 10 to 60 wt-% butyl acrylate;
- 0 to 30 wt-% butyl methacrylate;
- and
- 0 to 10 wt.-% methacrylic acid;
- a non-volatile UV absorber capable of absorbing UV radiation within a range of 240 to 400 nm;
- and
- a crosslinking component selected from 2-(acetoxyacetoxy)ethyl methacrylate (AAEM), diacetone acrylamide (DAAM), and mixtures or combinations thereof;
- wherein the coating composition includes no greater than 5 grams total VOC per 100 grams polymer solids.
8 more elements
A water-based coating composition, comprising:
- a latex polymer having at least one Tg within a range of 5° C. to 20° C., wherein the latex polymer is derived by polymerization in a single stage emulsion process, the emulsion comprising:
- 20 to 60 wt-% methyl methacrylate;
- 0 to 40 wt-% 2-ethyl hexyl acrylate;
- 10 to 60 wt-% butyl acrylate;
- 0 to 30 wt-% butyl methacrylate;
- and
- 0 to 10 wt-% methacrylic acid;
- 0.1 to 5.0 wt-% methyl-o-benzoyl benzoate, wherein the weight percent is based on the weight of the polymer solids;
- and
- a crosslinking component selected from 2-(acetoxyacetoxy)ethyl methacrylate (AAEM), diacetone acrylamide (DAAM), and mixtures or combinations thereof;
- wherein the coating composition includes no greater than 5 grams total VOC per 100 grams polymer solids.
8 more elements
Dependencies are inferred from the claim text.