Opacifying kaolin pigments and process for making same by reacti

Details Opacifying kaolin pigments and process for making same by reacti Opacifying kaolin pigments and process for making same by reacti

1989-04-21

1992-02-18

Lieberman, Paul

Compositions: coating or plastic

Materials or ingredients

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

106487, 501127, 501147, C04B 1404, C04B 3304

Patent

active

050890565

ABSTRACT:
An opacifying pigment with enhanced light scattering properties for use as a paper coating or filler material is produced by reacting kaolin in the presence of water with sodium hydroxide or potassium hydroxide at a temperature in excess of 60.degree. C. The kaolin is reacted with the hydroxide in a concentration to produce a molality of at least 0.1.

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