| abstract |
Composite pigments and processes for making the same, useful as partial or total replacement for pigments conventionally employed in paper, paper coatings, paint, ink, and in rubber, are disclosed. The composite pigments comprise one or more synthetic or natural core particles having adsorbed on the surface thereof a polymeric dispersant having a positive or negative charge, and one or more natural or synthetic co-particles having adsorbed on the surface thereof a polymeric dispersant having a positive or negative charge opposite the charge of the core particles. The composite pigments provide improved optical and other properties. |