Water soluble direct black polyazo dyestuffs mixture

• US 4,816,034 A
• Filed: 08/12/1986
• Issued: 03/28/1989
• Est. Priority Date: 08/16/1985
• Status: Expired due to Fees

• Current Assignee: ATUL Limited
• Original Assignee: Atul Products Ltd. (ATUL Limited)
• Inventors: Kulkarni, Subrao S., Bhatt, Mukundbhai, Upasani, Chandrashekhar B., Bhatt, Girish I.
• Primary Examiner(s): Clingman, A. Lionel
• Application Number:
  US06/895,752
• Time in Patent Office: 959 Days
• Field of Search: 8/641, 8/680, 8/687, 8/681
• US Class Current: 8/641
• CPC Class Codes: C09B 35/46 the component K being an amino naphthol
• CPC Class Codes: C09B 67/0046 Mixtures of two or more azo dyes
• CPC Class Codes: C09B 67/0055 Mixtures of two or more disazo dyes
• CPC Class Codes: Y10S 8/917 Wool or silk
• CPC Class Codes: Y10S 8/918 Cellulose textile
• CPC Class Codes: Y10S 8/919 Paper
• CPC Class Codes: Y10S 8/924 Polyamide fiber

Abstract

A water soluble direct black polyazo dyestuffs mixture comprising trisazo dyestuffs, polyazo dyestuffs and disazo dyestuff.

Claims

1. A water soluble direct black polyazo dyestuffs mixture comprising the following ingredients in the respective proportions:

i. about 20 to about 30 parts by weight of a trisazo dyestuff having a formula, ##STR1## ii. About 40 to about 60 parts by weight of a trisazo dyestuff having a formula, ##STR2## iii. About 5 to about 15 parts by weight of a trisazo dyestuff having a formula ##STR3## iv. About 5 to about 10 parts by weight of a polyazo dyestuffs mixture including a first polyazo dyestuff having a formula, ##STR4## a second polyazo dyestuff having a formula, ##STR5## a third polyazo dyestuff having a formula, ##STR6## the first, second and third polyazo dyestuffs being in a ratio in the range of about 10 to about 15;

about 3 to about 5;

about 0.5 to about 2, respectively; and

v. 2 to 5 parts by weight of a disazo dyestuff having a formula, ##STR7## wherein R is hydrogen, sodium or potassium and X is lower alkyl, lower alkoxy, chloro, nitro, carboxy, sulfonic or hydrogen at the 2, 3, or 4 position.

2. A dyestuffs mixture as claimed in claim 1, which comprises the ingredients in the following proportions:

ia. 22 to 27 parts by weight of the trisazo dyestuffs of the formula, ##STR8## iia. 50 to 60 parts by weight of the trisazo dyestuffs of the formula, ##STR9## iiia. 11 to 13 parts by weight of the trisazo dyestuffs of the formula, ##STR10## iva. 5 to 10 parts by weight of the polyazo dyestuffs mixture of the formula, ##STR11## va. 2 to 5 parts by weight of the disazo dyestuffs of the formula, ##STR12##

3. A dyestuffs mixture as claimed in claim 1, which is formed by mechanically mixing the ingredients.

4. A dyestuffs mixture as claimed in claim 2, which is formed by mechanically mixing the ingredients.

5. A dyestuffs mixture as claimed in claim 1, which is formed by first synthesizing the trisazo dyestuffs mixture of the formulae, ##STR13## in situ and thereafter mechanically mixing the mixture of trisazo dyestuffs with the first, second and third polyazo dyestuffs and disazo dyestuff.

6. A dyestuffs mixture as claimed in claim 2, which is formed by first synthesizing the trisazo dyestuffs mixture of the formula, ##STR14## in situ and thereafter mechanically mixing the mixture of trisazo dyestuffs with the first, second and third polyazo dyestuffs and disazo dyestuff.

7. A dyestuffs mixture as claimed in claim 3, wherein the ingredients are in the dry state.

8. A dyestuffs mixture as claimed in claim 4, wherein the ingredients are in the dry state.

9. A dyestuffs mixture as claimed in claim 3, wherein the ingredients are in the wet state and dyestuffs mixture is dried at a temperature between about 75°

to about 95°

C.

10. A dyestuffs mixture as claimed in claim 4, wherein the ingredients are in the wet state and the dyestuffs mixture is dried at a temperature between about 75°

to about 95°

C.

11. A dyestuffs mixture as recited in claim 1 wherein X is methyl, ethyl, methoxy or ethoxy.

12. A dyestuffs mixture as recited in claim 2 wherein X is methyl, ethyl, methoxy or ethoxy.

13. A dyestuffs mixture as recited in claim 3 wherein X is methyl, ethyl, methoxy or ethoxy.

14. A dyestuffs mixture as recited in claim 4 wherein X is methyl, ethyl, methoxy or ethoxy.

15. A dyestuffs mixture as recited in claim 5 wherein X is methyl, ethyl, methoxy or ethoxy.

16. A dyestuffs mixture as recited in claim 6 wherein X is methyl, ethyl, methoxy or ethoxy.

17. A dyestuffs mixture as recited in claim 8 wherein X is methyl, ethyl, methoxy or ethoxy.

18. A dyestuffs mixture as recited in claim 10 wherein X is methyl, ethyl, methoxy or ethoxy.