1:2 Metal complexes of azo compounds having 1-hydroxynaphthalene

Details 1:2 Metal complexes of azo compounds having 1-hydroxynaphthalene 1:2 Metal complexes of azo compounds having 1-hydroxynaphthalene

1977-05-27

1979-04-24

Higel, Floyd D.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 13, 260145A, 260148, C09B 4526, C09B 4530, C09B 4532, D06P 332

Patent

active

041509420

ABSTRACT:
1:2 Metal complexes of the formula ##STR1## in which EACH A is, independently, a 1,2-phenylene or 1,2-naphthylene diazo component radical which is unsubstituted or substituted by up to two substituents selected from (C.sub.1-4)alkyl, (C.sub.1-4)alkoxy, halogen, nitro, sulpho and carboxy,

REFERENCES:
patent: 1873278 (1932-08-01), Brightman
patent: 2012779 (1935-08-01), Straub et al.
patent: 2775581 (1956-12-01), Neier et al.
patent: 2933488 (1960-04-01), Biedermann et al.
patent: 2938490 (1960-04-01), Biedermann et al.
patent: 3457252 (1969-07-01), Meininger
patent: 3525732 (1970-08-01), Beffa et al.
patent: 3756771 (1973-09-01), Beffa
Meininger et al., Chemical Abstracts, vol. 75, #89317c (1971).

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