Process for production of free flowing dust-free pigments

Details Process for production of free flowing dust-free pigments Process for production of free flowing dust-free pigments

1980-07-03

1981-08-25

McCarthy, Helen M.

Coating processes

Particles, flakes, or granules coated or encapsulated

Resin base

106272, 106301, 106306, 106308Q, 260 285A, 260 4221, 264 13, 264117, 427242, 428407, B05D 700

Patent

active

042859948

ABSTRACT:
This invetion relates to novel pigement compositions and processes of making the same. The pigments of the present invention are free-flowing and a process for their production comprises a process for the production of a free-flowing pigment composition comprising tumbling together a finely divided wax composition as herein defined with a powdered pigment for a time sufficient for substantialy all of the pigment to be coated onto or to be absorbed by the wax. Specifically, a pigment in accordance with the invention comprises a free-flowing nucleated pigment composition comprising a substantially spherical particulate spray-chilled wax composition (as herein defined) having coated thereon and partially absorbed thereinto a pigment in powdered form, the said pigment being present to the extent of 50% by weight or more.

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Chemical Processing For Operating Management--"Pigment Bonded to Polystyrene in Minutes"--Sep. 16, 1966, p. 103.

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