US Patent 7172653 Solid pigment preparations comprising surface-active additives based on alkoxylated bisphenols

The invention related to solid pigment preparations essentially comprising the following components: (A) 60 to 90 wt. % of at least one pigment and (B) 10 to 40 wt. % of at last one surface active additive from the group of reaction products of alkylene oxides with a bisphenol of the general formula (I) in which the rings A are each mono- or di-substituted by C1–C8 alkyl, phenyl or phenyl C1–C9 alkyl and R1 and R2 independently=H, or C1–C8 alkyl, methods for production thereof and for dyeing high molecular weight organic and inorganic materials