Patent No. U.S. 7,318,864 B2
BASF has obtained a patent for solid pigment preparation including as essential constituents from 60-<90% by weight of at least one pigment, from 10-<40% by weight of at least one nonionic surface-active additive based on polyethers, and from 0.1-10% by weight of at least one anionic surface-active additive based on sulfonates, sulfates, phosphonates or phosphates, the sum total of the weight percentages not exceeding 100% by weight.
Published November 14, 2008
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