Media milling pigment slurries to eliminate or reduce oversize p

Details Media milling pigment slurries to eliminate or reduce oversize p Media milling pigment slurries to eliminate or reduce oversize p

1993-07-19

1994-10-18

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

C09C 136

Patent

active

053564707

ABSTRACT:
Disclosed is a process for substantially increasing the content of particles having a size of less than 10 microns in a titanium dioxide slurry, comprising subjecting a starting material slurry containing at least 0.5% by weight of titanium dioxide particles of at least about 10 microns to media milling, whereby the content of particles greater than 10 microns is reduced by a factor of 5.

REFERENCES:
patent: 3661522 (1972-05-01), Colombo et al.
patent: 3758322 (1973-09-01), Roberts et al.
Perry's Chemical Engineers' Handbook, Sixth Edition, pp. 8-14, 34, 58; 1984.
"Titanium Dioxide As A Paper Filler Pigment", R. Kwoka, present at 1990 Dyes, Fillers & Pigments Short Course, Atlanta, Ga. Apr. 25-27, TAPPI press pp. 31-37.

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