| abstract |
A process for treating a pigment base with one or more organophosphate compounds and / or their salts to form novel treated pigments and treated pigments for use in a polymer matrix. A pigment comprising titanium dioxide, the titanium dioxide being treated with an organophosphate compound having the formula: R 'n -P (n-2 ) O 4+ [3 (n-3)] where, be n = 4 to 14; and each R' is an organic radical having 2 to 22 carbon atoms, or, And in any one molecule, any two or more R ′ groups can be the same, provided that at least one of the R ′ groups is not hydrogen; and wherein the organophosphate A pigment, wherein the compound is present in an amount of about 0.01% to about 5% by weight, based on the weight of the titanium dioxide. [Selection figure] None |