Particle surface treatment

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11142648
APP PUB NO 20180298197A1
SERIAL NO

15764339

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Abstract

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A method of treating particulate titanium dioxide includes providing the particulate titanium dioxide which includes a crystal structure and then treating the particulate titanium dioxide with a coating agent that is an alkylphosphonic acid or an ester thereof, and steam micronizing the particulate titanium dioxide with a steam micronizer so that a vapor exit temperature from the steam micronizer is 150° C. or higher, so as to obtain a micronized particulate titanium dioxide which includes the coating agent at an outer surface. The particulate titanium dioxide includes an aluminum oxide coating and/or includes within the crystal structure aluminum oxide in a molar excess of an amount required to compensate any Nb2O5 in the crystal structure. The alkylphosphonic acid includes a C6-C22 alkyl group.

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Patent Owner(s)

  • HUNTSMAN P&A UK LIMITED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Costello, Peter Stockton-On-Tees, GB 6 72
Edwards, John L Stockton-On-Tees, GB 16 101
Jones, Anthony G Stockton-On-Tees, GB 11 92
Williamson, David Bishop Auckland, GB 35 250

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