Process for conditioning organic pigments

Details Process for conditioning organic pigments Process for conditioning organic pigments

1991-07-08

1993-03-16

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106 22H, 106 23K, 106410, 106411, 106413, 106493, 106494, 106495, 106497, 106498, 106500, 546 36, 546 49, 546 56, 546167, 546256, 546272, 548453, C09B 5600, C09B 4800, C09B 700

Patent

active

051940884

ABSTRACT:
A process for converting crude pigments into pigmentary form wherein the crude pigment is premilled, then contacted with a polar solvent at temperatures below 50.degree. C., with or without the presence of particle growth inhibitors, and finally isolated.

REFERENCES:
patent: 2844485 (1958-07-01), Struve
patent: 3298847 (1965-08-01), Hanke et al.
patent: 3607336 (1971-09-01), Jaffe
patent: 4247696 (1981-01-01), Shibata et al.
patent: 4579949 (1986-04-01), Rochat et al.
patent: 4720305 (1988-01-01), Iqbal et al.
patent: 4760144 (1988-07-01), Jaffe
patent: 4895948 (1990-01-01), Jaffe et al.
Derwent Abst. 79-83541B/46 (JP 54130-621).

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