Process for producing dioxazine violet pigment

Details Process for producing dioxazine violet pigment Process for producing dioxazine violet pigment

1982-03-22

1984-11-06

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Chalcogen in the nitrogen containing substituent

106288Q, 106308Q, 106309, C07D26534, C09B 1900, C09B 1902, D06P 100

Patent

active

044813589

ABSTRACT:
A process for producing stable (.beta.-type) dioxazine violet pigment having superior gloss and tinting strength to the metastable (.alpha.-type or a type analogous thereto) dioxazine violet pigment, by mixing an aqueous suspension of a metastable dioxazine violet pigment with an acetate or ketone compound and then heating the mixture. The metastable dioxazine violet pigment may be that obtained according to the conventional method, and employable in situ.

REFERENCES:
patent: 3022298 (1962-02-01), Mory et al.
patent: 3119706 (1964-01-01), Bachmann
patent: 3130195 (1964-04-01), Vor DerCrone et al.
patent: 3310556 (1967-03-01), Vor DerCrone et al.
patent: 3577255 (1971-05-01), Petke
patent: 4345074 (1982-08-01), Hufnagel et al.

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