COLORANT

N° de brevet: WO9734957 (A1)
Date de publication: 1997-09-25
Inventeur(s): KAUFMANN RAINER [DE];
Demandeur(s): KAUFMANN RAINER [DE];
Classification: C09B67/24;C09D11/02;C09D11/16;
N° de demande: WO1997EP01357 19970318 
Numéro(s) de priorité: DE19961010560 19960318 
High brightness kaolin pigments and methods of making high brightness kaolin pigments are provided. Both delaminated and nondelaminated clays are provided having typical brightness of 87 or higher. The pigments have high brightness and good opacity, providing an optimum pigment for paper coating and paper filler. Also provided are blended high brightness kaolins having increased opacity properties.

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