Process for making titanium dioxide and resulting product
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United States of America Patent
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Issued Date -
Mar 2, 2006
app pub date -
Aug 30, 2004
filing date -
Aug 30, 2004
priority date (Note) -
Abandoned
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Abstract
A process is disclosed for making titanium dioxide pigment particularly suited for dispersion in thermoplastics, in which the titanium dioxide pigment is recoverable from a slurry through the use of conventional vacuum-type and/or pressure-type filtration systems without the deposition of additional inorganic oxides and in the absence of added flocculating agents, and further in which the thus-recovered, washed and filtered pigment can be dried by spray drying, without the dilution required in the production of such pigments according to a prior art process likewise omitting the deposition of additional inorganic oxides to those formed in a vapor phase oxidation step providing the agglomerated titanium dioxide starting material and omitting any use of added flocculating agents.
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