Process for the preparation of high yield pigments

Details Process for the preparation of high yield pigments Process for the preparation of high yield pigments

1985-02-03

1986-12-30

Willis, Prince E.

Compositions: coating or plastic

Materials or ingredients

106309, C04B 1400

Patent

active

046327045

ABSTRACT:
A process for the preparation of high yield pigments of the series of the diketopyrrolopyrroles, quinacridones, isoindolinones and isoindolines by protolysis of the pigment salt obtained by treating the crude pigment with a strong base or of the pigment salt obtained in the course of the synthesis, which process comprises treating said pigment salt, in an organic solvent, with water such that the organic solvent is simultaneously removed during the protolysis. The pigments so obtained are high yield pigments and have a particularly fine crystalline form and excellent purity.

REFERENCES:
patent: 4017496 (1977-04-01), Hanke
patent: 4064129 (1977-12-01), Gerson et al.
patent: 4100162 (1978-07-01), North
patent: 4165319 (1979-08-01), von der Crone et al.
patent: 4247695 (1981-01-01), Fitzgerald
patent: 4262120 (1981-04-01), von der Crone et al.
patent: 4271301 (1981-06-01), Lotsch et al.
patent: 4311527 (1982-01-01), Lotsch
patent: 4385174 (1983-05-01), Iqbal et al.
patent: 4500718 (1985-02-01), Rochat et al.
patent: 4579949 (1986-04-01), Rochat et al.

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