Process for preparing an improved low-dusting, free-flowing pigm

Details Process for preparing an improved low-dusting, free-flowing pigm Process for preparing an improved low-dusting, free-flowing pigm

1998-03-31

1999-06-01

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

106417, 106418, 106423, 106429, 106436, 106438, 106442, 106445, 106446, 106447, 106448, 106449, 106460, 106465, 106471, 106475, 106490, 106491, 428403, 428404, 523200, C09C 136

Patent

active

059084987

ABSTRACT:
A process for preparing a low-dusting, free-flowing pigment which has not been subjected to any micronizing treatment comprising the steps of providing an inorganic pigment material; providing a source of water; forming a fine, well dispersed slurry of the pigment and water; milling the slurry; depositing a treating agent having the formula ROOCCHSO.sub.3 MCH.sub.2 COOR' wherein R and R' are monovalent alkyl radicals having from about 2 to about 20 carbon atoms, and M is a metallic monovalent cation on the slurried milled pigment; and drying the pigment material having a treating agent deposited thereon. The invention also provides the free-flowing pigments produced by this process.

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