Titanium dioxide pigment treated to suppress yellowing in polymers
AssigneeThe New Jersey Zinc Company
InventorJohn R. Brand
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Abstract
A titanium dioxide pigment is provided for use in polymeric compositions comprising a pyrogenic titanium dioxide pigment which has been treated with an addition system comprising: (a) an organophosphate/alkanolamine addition product, and (b) a polyol. This invention provides for a novel method for treating a pyrogenic titanium dioxide pigment in order to reduce yellowing when such pigment is incorporated into a polymeric composition comprising adding to such pigment an addition system which comprises: (a) an organophosphate/alkanolamine addition product, and (b) a polyol.
Claims22
A titanium dioxide pigment for use in polymeric compositions comprising a pyrogenic titanium dioxide pigment which has been treated with an addition system comprising:
- (a) an organophosphate/alkanolamine addition product, and
- (b) a polyol.
A method for treating a pyrogenic titanium dioxide pigment to reduce yellowing when such pigment is incorporated into a polymeric composition comprising adding to such pigment an addition system which comprises:
- (a) an organophosphate/alkanolamine addition product, and
- (b) a polyol.
A composition comprising a polymer in admixture with a pyrogenic titanium dioxide pigment which has been treated with an addition system comprising
- (a) an organophosphate/alkanolamine addition product, and
- (b) a polyol.
Dependencies are inferred from the claim text.