Dispersion

Details Dispersion Dispersion

1997-11-24

2000-03-07

Merriam, Andrew E. C.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523334, 523340, 523342, 528326, 528501, 528502R, C08J 3205

Patent

active

060341564

ABSTRACT:
The presently claimed process for the production of a solid pigment/resin dispersion comprises the steps of mixing together a particulate pigment, a solid resin carrier, a water-immiscible organic solvent in which the carrier is at least partially soluble, water, and, optionally, a water miscible solvent until the mixture separates into an aqueous phase and a coherent phase comprising resin, pigment and organic solvent; separating water from the coherent phase; and continuing to mix the coherent phase while removing the organic solvent under the action of heat and/or reduced pressure until a dry particulate material comprising a pigment and resin is formed.

REFERENCES:
patent: 3575382 (1971-04-01), Loomans
patent: 3929707 (1975-12-01), Berg et al.
patent: 4279802 (1981-07-01), Laely et al.
patent: 4430461 (1984-02-01), Deering et al.
patent: 4732968 (1988-03-01), Obayashi et al.
patent: 4759801 (1988-07-01), Goldmann et al.

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