Patent ID: 7259195
Filing Date: 2007-08-21
Classification: C01P,C09C,Y10T

Abstract:
1. A polymer film comprising: (i) a treated pigment, wherein said treated pigment comprises titanium dioxide and an organo-phosphoric acid compound having the formula: wherein n=4-14, and each R′ is an organic group having from 2 to 22 carbon atoms or hydrogen and within any one molecule, any two or more R′ groups may be the same provided that at least one of the R′ groups is not hydrogen; and (ii) a polymer, wherein said 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 titanium dioxide, and said treated pigment is present in an amount of about 20 wt. % based on the weight of the polymer film.