Organic compounds -- part of the class 532-570 series – Organic compounds – Azo
Patent
1990-09-05
1992-02-04
Springer, David B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Azo
534581, 534582, 534583, 534584, 534863, 534864, 534874, 534887, 534739, 86371, 106 23, C09B 2920, C09B 2932, C09B 4100, D06P 144
Patent
active
050861689
ABSTRACT:
The invention relates to monoazo pigments prepared from dichloroanilines as diazo components and CH-acidic coupling components of the acetoacetarylamide or naphthol series, these pigments only containing an extremely low level of polychlorinated biphenyls (PCBs) (at most 25 .mu.g per g of pigment).
The process for preparing the pigments takes the form of an azo coupling in an aqueous medium, wherein
REFERENCES:
patent: 3124565 (1964-03-01), Schilling et al.
patent: 4195020 (1980-03-01), Hunger et al.
patent: 4395264 (1983-07-01), Fenwick
patent: 4459233 (1984-07-01), Fabian et al.
Anliker et al., Swiss Chem. J., 3, 17-23 (in German), 25-29 (in English) (1981).
Herbst et al., Industrielle Organische Pigmente, VCH-Verlag, Weinheim, 1987, pp. 577-578.
Bankman et al. I, J. Soc. Dyers & Colorists 100, 118-123 (1984).
Bankman et al. II, Chemosphere, 13, pp. 449-506 (1984).
B.I.O.S. Report 1661, pp. 128-129, Ed. by F. A. Walker et al. (1976).
Martinetz, Dieter, Chem. Techn. 39, 466-470 (1987).
Hoechst Aktiengesellschaft
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Springer David B.
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