Structured pigment from high TiO.sub.2 /Fe.sub.2 O.sub.3 kaolini

Details Structured pigment from high TiO.sub.2 /Fe.sub.2 O.sub.3 kaolini Structured pigment from high TiO.sub.2 /Fe.sub.2 O.sub.3 kaolini

1991-01-18

1992-09-15

Dixon, Jr., William R.

Compositions: coating or plastic

Materials or ingredients

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

106407, 106486, 106483, 106811, 106439, 501149, C04B 3314

Patent

active

051474581

ABSTRACT:
A low brightness pigment and method is provided from a heretofore rejected waste kaolin stream. Kaolin processing rejects are high in iron-stained TiO.sub.2. After separating the stained TiO.sub.2 from the high brightness kaolin and concentrating the resulting fraction, the material can be processed to produce a low brightness pigment suitable of many applications where lower brightness is desirable, such as coating paper board without mottling.

REFERENCES:
patent: 3371988 (1968-03-01), Maynard et al.
patent: 3857781 (1974-12-01), Maynard et al.
patent: 4424124 (1984-01-01), Iannicelli
patent: 4812299 (1989-03-01), Wason

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