Patent ID: 8329807
Filing Date: 2012-12-11
Classification: C08F,C08K,C08L,C09D

Abstract:
1. A colorant composition, suitable for combining with a component comprising a film-forming binder latex to form a latex paint, including a surfactant, a dispersant, or a surfactant and a dispersant, at least one said surfactant or dispersant present in the composition having one or more hydrophilic segments and one or more hydrophobic segments, which colorant composition comprises: water; a tinting colorant suitable for formulating a tinted latex paint; and a component including an amount of at least one hydrophobic latex polymer which when aggregated in said latex paint with an effective amount of said binder latex would constitute a total mass of latex greater than required for forming a latex paint film when dry, said amount of at least one hydrophobic latex polymer being effective in said latex paint film to mitigate water-softening and/or water-staining of said film, when dry, by at least 25% in comparison to the water-softening and/or water-staining which would otherwise be exhibited in the absence of said amount of at least one hydrophobic latex polymer; said colorant composition not including a pigment which is a non-tinting colorant.