Process for the production of titanium dioxide pigments with hig

Details Process for the production of titanium dioxide pigments with hig Process for the production of titanium dioxide pigments with hig

1980-09-08

1982-05-04

McCarthy, Helen M.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106308B, 106299, C09C 136

Patent

active

043280404

ABSTRACT:
The production of titanium dioxide pigments with improved chalking resistance and gloss retention by coating with an oxide and/or phosphate of zirconium and of titanium, aluminum and/or silicon, the improvement which comprises coating with zirconium by adding to an aqueous alkaline suspension of the titanium dioxide pigment of alkali metal or ammonium zirconium carbonate complex and slowly precipitating the zirconium by adding a dissolved compound of at least one of titanium, aluminum, silicon and phosphorus.

REFERENCES:
patent: 2284772 (1942-06-01), Seidel
patent: 2387534 (1945-10-01), Seidel
patent: 3141788 (1964-07-01), Whately
patent: 3251705 (1966-05-01), Rieck et al.
patent: 3383231 (1968-05-01), Allan
patent: 3926660 (1975-12-01), Holle et al.
patent: 4075031 (1978-02-01), Allen

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