Process for the fine distribution of pigments of the dioxazine s

Details Process for the fine distribution of pigments of the dioxazine s Process for the fine distribution of pigments of the dioxazine s

1978-09-20

1981-03-03

Griffin, Ronald W.

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Six-membered hetero ring having two or more ring hetero...

106288Q, 241 5, 241 29, C09B 1902, C09B 6700

Patent

active

042538394

ABSTRACT:
Coarsely crystalline crude dioxazine pigments are subjected to dry milling while maintaining their crystallinity as far as possible until the desired degree of fineness is reached and then treated with a solvent.

REFERENCES:
patent: 2857400 (1958-10-01), Cooper
patent: 3126293 (1964-03-01), McSheehy et al.
patent: 3127412 (1964-03-01), Gaertner et al.
patent: 3598625 (1971-08-01), Buckwalter
patent: 3615800 (1971-10-01), Spietschka et al.
patent: 4069783 (1978-01-01), Morgan
patent: 4165840 (1979-08-01), Lewis et al.
Chemical Abstracts, vol. 52, 1958, p. 17733g.

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