Process for the production of colorant preparations and the colo

Details Process for the production of colorant preparations and the colo Process for the production of colorant preparations and the colo

1981-05-26

1982-12-28

Hall, James R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

264 5, 264140, 264157, B01J 210

Patent

active

043662714

ABSTRACT:
An improved flush process for the production of a colorant composition, which involves mixing a colorant in the presence of water with the organic carrier material in a kneader at a temperature sufficient to melt said organic carrier material and flushing the colorant onto the organic carrier material with the concomitant formation of a colorant-free separate water phase, wherein the improvement consists essentially of kneading the mixture of molten colorant composition and separate colorant-free water while cooling the kneader and the mixture to a temperature below the softening point of the organic carrier, a temperature sufficient to cause the molten colorant composition to solidify, and concomitantly comminuting the solidified colorant composition into broken, irregular granulates in the presence of the colorant-free water.

REFERENCES:
patent: 2755195 (1956-07-01), Grubenmann
patent: 3308211 (1967-03-01), Plastridge
patent: 3582384 (1971-06-01), Belde et al.
patent: 4116924 (1978-09-01), Peabody
Hans Kittel, Pigmente, Wissenschaftliche Verlag, Stuttgart, 1960, pp. 569-578.

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