Patent ID: 9120936
Filing Date: 2015-09-01
Classification: C09D

Abstract:
1. A method of preparing a water-based composition, the method comprising: providing an aqueous polymer comprising a latex or water-dispersible polymer in water; providing an additive package comprising at least one of a pigment, a thickener, a mildewcide, a biocide, a defoamer, a surfactant, a dispersant, a filler, and combinations thereof; providing one or more water-insoluble ultraviolet absorbers capable of absorbing UV radiation within a range of 240-400 nm; providing one or more low VOC coalescents having a volatile organic content of 30% or less; dissolving the one or more water-insoluble ultraviolet absorbers in the one or more low VOC coalescents to form a UV-absorber-coalescent solution; mixing the aqueous polymer with the additive package; and before and/or after mixing the aqueous polymer with the additive package, the UV-absorber-coalescent solution is mixed with the aqueous polymer, the additive package, or both to form a water-based coating.