Article: Cabot Corp. patents aqueous colored pigment dispersion.(Patents Update)

Patent No. U.S. 7,223,302 B2

Cabot Corporation has been granted a patent for a method of preparing an aqueous colored pigment dispersion comprised of the steps of combining a colored pigment and an azo coupler to form a pretreated colored pigment, and combining, in any order, the pretreated colored pigment, an ...

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