Process for the production of rutile mixed-phase pigments

Details Process for the production of rutile mixed-phase pigments Process for the production of rutile mixed-phase pigments

1989-01-18

1990-04-17

Rosenberg, Peter D.

Compositions: coating or plastic

Materials or ingredients

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

106436, C09C 136

Patent

active

049177354

ABSTRACT:
A process for the production of rutile mixed-phase pigments comprising calcinating a solid mixture of titanium dioxide and/or titanium dioxide hydrate with a dye-producing metal compound in an indirectly heated rotary kiln supplied with air, wherein the titanium dioxide comprises an uncalcined, salt-free titanium dioxide having a specific BET surface of 50 to 500 m.sup.2 /g.

REFERENCES:
patent: 3022186 (1962-02-01), Humd et al.
patent: 3560234 (1971-02-01), Holbein
patent: 3607338 (1971-09-01), Webb
patent: 3942999 (1976-03-01), Hinley
patent: 4448608 (1984-05-01), Jenkins
Ullmanns Encyklopadie der Technischen Chemie, Petrolsulfonate bis Plutonium Band 18, pp. 576.

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