Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1996-01-02
1997-11-25
Bonner, Melissa
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106442, 106446, 106485, 106486, C09C 136
Patent
active
056907281
ABSTRACT:
A structured composite pigment composed of TiO.sub.2, calcined clay and polyaluminum chloride (PAC). A novel process is disclosed for producing an aggregated composite premium pigment having superior optical, physical and dispersion characteristics for papermaking applications. The aggregated pigment is produced by chemically aggregating a mixture containing TiO.sub.2 and calcined clay with polyaluminum chloride of a basicity of 10-85% in alkaline conditions of pH 8.5-10.5.
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Steelhammer, et al., PIMA, Feb. 1992, Polyaluminum Chloride Primer Revisited.
Bonner Melissa
Nord Kaolin Company
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