TiO.sub.2 pigments resistant to discoloration in the presence of

Details TiO.sub.2 pigments resistant to discoloration in the presence of TiO.sub.2 pigments resistant to discoloration in the presence of

1989-09-06

1991-03-12

Dixon, Jr., William R.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106447, 524413, C09C 136

Patent

active

049990551

ABSTRACT:
An improved inorganic pigment (e.g., TiO.sub.2), process for treating such pigment and polymer (e.g., polyethylene, polypropylene or polystyrene) incorporating such pigment wherein the inorganic pigment is coated with maleic, malonic, benzoic, fumaric, or phthalic acid or mixtures thereof. The coated pigments exhibit excellent resistance to polymer yellowing or discoloration and do not appear to degrade polymer properties.

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Abstract; Author: Solvik, R. S.; Wu, W. C. L.; Krebaum, L. J.; Title: Control of Yellowing in High Density Polyethylene [PE] Pigmented with Titanium (IV) Oxide.

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