Patent ID: 6713543
Filing Date: 2004-03-30
Classification: C01P,C09C,Y10T

Abstract:
A pigment comprising a pigmentary base that has been treated with an organo-phosphoric acid compound having the formula:Râ€²nâ€”P(nâˆ’2)O4+[3(nâˆ’3)]wherein n=4-14; and each Râ€² is an organic group having from 2 to 22 carbon atoms or hydrogen and within any one molecule, any two or more Râ€² groups may be the same provided that at least one of the Râ€² groups is not hydrogen; and wherein the organo-phosphoric acid compound is present in an amount from about 0.01 percent to about 5 percent by weight based on the weight of the pigmentary base.