Chromium complexes of sulfo group containing disazo compounds having a resorcinol biscoupling component radical

• US 5,008,379 A
• Filed: 10/29/1987
• Issued: 04/16/1991
• Est. Priority Date: 09/25/1979
• Status: Expired due to Term

• Current Assignee: Clariant Finance (Bvi) Limited
• Original Assignee: Sandoz Inc. (Novartis Ag)
• Inventors: Holliger, Herbert
• Primary Examiner(s): Higel, Floyd D.
• Application Number:
  US07/114,901
• Time in Patent Office: 1,265 Days
• Field of Search: 534/684
• US Class Current: 534/684
• CPC Class Codes: C09B 45/26 containing chromium

Abstract

Water-soluble, anionic, chromium complexes of disazo compounds, at least one of the complex-forming disazo compounds being of the formula, ##STR1## in which ##STR2## is the radical of a carboxy group-containing diazo component of the benzene or naphthalene series, the carboxy group being ortho to the azo group and the diazo component being free from other metallizable groups, and

B-- is the radical of a diazo component of the benzene or naphthalene series free from metallizable substituents,

which complexes contain at least one water-solubilizing group, are in free acid or salt form and are useful for dyeing and printing substrates such as natural and synthetic polyamides, polyurethanes and anodized aluminum, particularly fur-lined leather.

Claims

1. A 1:

2 chromium complex of the formula ##STR15## or a salt thereof.

2. A salt of a 1:

2 chromium complex according to claim 1 having the formula ##STR16##

3. A lithium, sodium or potassium salt of a 1:

2 chromium complex according to claim 2.

4. A sodium salt of a 1:

2 chromium complex according to claim 3.

5. A 1:

2 chromium complex of the formula ##STR17## or a salt thereof.

6. A sodium salt of a 1:

2 chromium complex according to claim 5.