Process for the preparation of granular dye formulations from po

Details Process for the preparation of granular dye formulations from po Process for the preparation of granular dye formulations from po

1985-03-11

1986-08-05

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Dry dye composition other than mere mixture of two or more...

Dye in specified form other than mere powder

8524, 8609, 8611, 8648, 8650, 8662, 8675, 8685, 8924, 8654, 8657, B01J 228, C09B 6742

Patent

active

046041001

ABSTRACT:
The invention describes a process for the preparation of granular dye formulations by melt granulation, using a polyethylene glycol as melt vehicle. The essential feature of the invention is that a start is made from the dye which contains water, for example from the aqueous filter cake or synthesis solution, and adjusting the moisture content of the granular formulations to 1 to 30% by partial evaporation of water from the dye/polyethylene glycol melt.

REFERENCES:
patent: 3948599 (1976-04-01), Irmiger et al.
patent: 4425134 (1984-01-01), Bruttel et al.
patent: 4525170 (1985-06-01), Balliello

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