Durable pigmentary titanium dioxide and methods of producing the

Details Durable pigmentary titanium dioxide and methods of producing the Durable pigmentary titanium dioxide and methods of producing the

1997-01-16

1998-03-24

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

106439, 106442, C09C 136

Patent

active

057307962

ABSTRACT:
Pigmentary titanium dioxide having a high durability when used in paint or the like exposed to solar radiation and methods of producing such pigmentary titanium dioxide are provided. The durable pigmentary titanium dioxide of the invention is comprised of rutile titanium dioxide particles having cerium oxide and dense amorphous silica deposited thereon. The particles preferably also have an outer coating of hydrous alumina deposited thereon.

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Declaration Under 37 CFR 1.175 of Howard Wayne Jacobson appearing in file wrapper for Patent No. Re. 32,320.

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