Treatment of pigment

Details Treatment of pigment Treatment of pigment

1976-06-04

1977-10-04

Garvin, Patrick P.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106308B, C09C 136

Patent

active

040522229

ABSTRACT:
A process for the treatment of titanium dioxide pigment in which there is added to a slurry of the pigment a compound of silicon, of aluminium, of zirconium and of titanium, changing the pH of the slurry to 7.5 to 8.5 prior to adding a compound of silicon, an acidic compound of aluminium and an alkaline compound of aluminium, thereby producing a coated pigment.

REFERENCES:
patent: 3513007 (1970-05-01), Hederer
patent: 3515566 (1970-06-01), Moody et al.
patent: 3897261 (1975-07-01), Allen

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