Method for producing disazo pigments

Details Method for producing disazo pigments Method for producing disazo pigments

2007-08-28

2007-08-28

Powers, Fiona T. (Department: 1626)

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

Organic compounds

Azo

C534S575000, C534S741000, C534S887000

Reexamination Certificate

active

10519218

ABSTRACT:
A method for the production of a diazo pigment, or a mixture of diazo pigments, according to formula (I) of the specification by azo coupling, wherein the azo coupling product is subjected to a finish in an organic solvent or in an agueous organic solvent with a neutral or alkaline pH.

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U.S. Appl. No. 10/479,344; by Weber et al., filed May 12, 2006.

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