Patent · US Expired

Substituted unsymmetrical azo, azomethine 1:2 chromium complexes

US4219473A · kind A · utility

0Cited by
5References
1Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 9, 1977
Grant dateAug 26, 1980
Priority date—
Expiry dateDec 9, 1997

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09B45/16
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

1:2 Chromium complex dyes of the formula ##STR1## wherein A represents the radical of a phenol substituted by alkyl and/or acylamino or of a 2-naphthol optionally substituted by acylamino, one V represents hydrogen and the other hydrogen or nitro, X is aryl, an aliphatic or araliphatic radical or an optionally substituted amino group and wherein the benzene ring a can be substituted by halogen, cyano, nitro, acylamino, low molecular alkyl, low molecular alkoxy, sulphonamide and sulphone groups, and the benzene ring b can carry a further fused benzene ring or can be substituted by halogen, nitro, low molecular alkyl or alkoxy and arylazo groups, and wherein K.sup.+ represents a cation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.