Pigment

Details Pigment Pigment

2006-01-17

2010-10-12

Lorengo, Jerry (Department: 1793)

Compositions: coating or plastic

Materials or ingredients

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

C106S486000, C106S447000

Reexamination Certificate

active

07811375

ABSTRACT:
A heated mixture comprising dehydroxylated kaolin and a high refractive index pigment is disclosed. When the dehydroxylated kaolin is metakaolin, the heated mixture has a GE brightness greater than 86% and a Hunter yellowness index of less than about 11. When the dehydroxylated kaolin is fully calcined kaolin, the heated mixture has a GE brightness greater than 89%. The heated mixture is advantageously used in decorative paper.Also disclosed are methods of using and making the decorative paper, and decorative laminates containing the decorative paper.

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EXCALIBER® Engelhard Corporation Product Brochure (published 2002).
Kaolinbasierende Systeme zur Erhohung der Opazitat von Papieren, by C. Kohl and R. Berube, Wochenblatt fur Papierfabrikation, Nov. 2004, pp. 1400-1403.
US06/001644 PCT Search Rp, Feb. 21, 2007, Engelhard Corporation.
Chinese Office Action for 200680002416.0 mailed on Jan. 8, 2010.
European Office Action for 06 718 681.7 mailed on Mar. 9, 2010.
I. R. Wilson, Kaolin and halloysite deposits of China, Clay Minerals, vol. 39, 2004, pp. 1-15.

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