| 摘要 |
This invention relates to a process for surface treating organic pigments by applying to the surface of an organic pigment (a) about 0.5 to about 15 percent by weight, relative to the pigment, of a phosphoric acid monoester having the formula <IMG> wherein R is an optionally substituted saturated or unsaturated C5-C40 aliphatic group, and M is hydrogen, metal, or ammonium; optionally in admixture with (b) 0 to about 10 percent by weight, relative to the phosphoric acid monoester, of a process additive.
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