Suppress dyeing method

• US 4,881,941 A
• Filed: 07/12/1988
• Issued: 11/21/1989
• Est. Priority Date: 07/12/1988
• Status: Expired due to Fees

• Current Assignee: Clariant Finance (Bvi) Limited
• Original Assignee: Sandoz Inc. (Novartis Ag)
• Inventors: Dixon, Michael W.
• Primary Examiner(s): CLINGMAN, A
• Application Number:
  US07/217,800
• Time in Patent Office: 497 Days
• Field of Search: 8/445, 8/446, 8/482, 8/580
• US Class Current: 8/482
• CPC Class Codes: D06P 5/00 Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
• CPC Class Codes: Y10S 8/917 Wool or silk
• CPC Class Codes: Y10S 8/918 Cellulose textile
• CPC Class Codes: Y10S 8/924 Polyamide fiber
• CPC Class Codes: Y10S 8/927 Polyacrylonitrile fiber

Abstract

A textile substrate is dyed by immersing it in a gathered configuration into an oil medium containing a dissolved or dispersed dye for a sufficient time to allow the oil medium to come into contact with part but not all of the surface of the substrate and the thus-treated substrate is then preferably immersed in an aqueous medium having another dye dissolved or dispersed therein.

Claims

1. A method of coloring a textile substrate which comprises applying a dye from an oil medium to part but not all of the surface of the substrate by immersing the substrate in a gathered configuration into the oil medium containing a dye dissolved or dispersed therein for a time sufficient so that the dye-containing oil comes into contact with only part of the surface of the substrate, said dye being one which is capable of imparting a desired color to the substrate and said oil being of sufficient viscosity that it does not readily wick into the fibers of the textile substrate in those areas where it has not been applied.

2. A method according to claim 1 wherein the oil medium is vegetable oil.

3. A method according to claim 1 wherein the dye is a solvent dye.

4. A method according to claim 3 wherein the oil is a vegetable oil.

5. A method according to claim 3 which further comprises predissolving the dye in a solvent suitable for dissolving the particular solvent dye and mixing the resulting product with the oil medium.

6. A method according to claim 1 wherein the textile substrate is cotton.

7. A method according to claim 1 which further comprises the step of applying a water-soluble or water-dispersible dye from an aqueous medium to at least part of the surface of the substrate which was not contacted by the dye-containing oil medium.

8. A method according to claim 7 wherein the dyeing from an aqueous medium is effected by immersing the substrate in the aqueous medium.

9. A method according to claim 8 wherein the aqueous medium contains a water-dispersible pigment.

10. A method according to claim 1 wherein the textile substrate comprises cellulose, alone or blended with polyester.

11. A method according to claim 1 wherein the dye-containing oil medium is applied to the textile substrate in less than 5 seconds.

12. A method according to claim 1 which further comprises dyeing the substrate from an aqueous medium to provide a ground color prior to applying the dye from the oil medium.

13. A textile substrate dyed by the method of claim 1.

14. A textile substrate dyed by the method of claim 8.

15. A method of coloring a textile substrate which comprises dissolving a solvent dye in a solvent therefor, mixing the resulting solution with an oil medium and applying the dye from the oil medium to part but not all of the surface of the substrate by introducing the substrate into the oil medium containing the dissolved dye so that the oil comes into contact with only part of the surface of the substrate, said dye being one which is capable of imparting a desired color to the substrate and said oil being of sufficient viscosity that it does not readily wick into the fibers of the textile substrate in those areas where it has not been applied.

16. A method according to claim 15 wherein the textile material comprises cellulose, alone or blended with polyester.

17. A method according to claim 15 wherein the oil is a vegetable oil.

18. A method according to claim 17 wherein the textile substrate comprises cellulose, alone or blended with polyester.