Process for producing dispersions of pigments in condensation ty

Details Process for producing dispersions of pigments in condensation ty Process for producing dispersions of pigments in condensation ty

1975-07-17

1977-01-11

Czaja, Donald E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 37P, 260 37NP, C08K 904, C09D 1700

Patent

active

040025934

ABSTRACT:
A process for producing essentially agglomerate free intimate dispersions of at least 10 weight % of pigment in condensation type polymers is described. The process is carried out by forming a liquid dispersion of pigment particles having a size less than 3 microns in certain hydrocarbon diluents, adding the liquid dispersion to a melt of the polymer, mixing the dispersion and polymer under molten conditions until the pigment transfers from the diluent phase to the polymer phase, removing the diluent phase and recovering the pigment-polymer phase.

REFERENCES:
patent: 1863332 (1932-06-01), Hailwood et al.
patent: 2070177 (1937-02-01), Pickett
patent: 2571319 (0000-01-01), Waters et al.
patent: 2884410 (1959-04-01), Randall
patent: 3275590 (1966-09-01), Thomas

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