Pigment compositions and process for dust free pigment beads

Details Pigment compositions and process for dust free pigment beads Pigment compositions and process for dust free pigment beads

1978-06-16

1980-03-25

Seccuro, Carman J.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106308Q, 106308C, 106308F, 106308N, 106 22, 106 23, 260 17R, 260 24, 260 37N, 260 292TN, C09C 308, C09C 310

Patent

active

041949218

ABSTRACT:
A process for the manufacture of substantially dust free meterable and readily dispersible beads of a pigment composition which comprises contacting with agitation a suspension of a finely divided pigment or pigment composition in a mixture of water and an oxygenated aliphatic hydrocarbon solvent containing from 1 to 5 carbon atoms and having appreciable solubility in water, together with a solution of a carrier which is substantially water insoluble and soluble in the respective solvent at reflux temperature and then distilling off the solvent and recovering the resultant beads by filtration from the aqueous phase.

REFERENCES:
patent: 3523030 (1970-08-01), Malin et al.
patent: 3755244 (1973-08-01), Hart
patent: 3758321 (1973-09-01), Santimauro et al.
patent: 3775148 (1973-11-01), Bradley
patent: 4015999 (1977-04-01), Robertson et al.

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