Encapsulated colourants for waterborne coating compositions

摘要

Readily dispersible pigment granules, such as Xfast~(TM) stirred-in pigments form BASF allow addition of colour to waterborne paints, without dispersion of the pigments in a bead mill. Such pigments reportedly are quickly, evenly, and immediately dispersed to develop full tinting strength simply by stirring into or shaking into the white paint. These free-flowing, low-dusting, easily-handled and rapidly dispersing micro-granules are made by using an additive system to coat pre-dispersed pigment particles. When added to waterborne paints these pigment particles disperse without forming large pigment aggregates thus enabling direct coloration with stir-in pigments.