Claims
- 1. A method for enzymatic discharge printing, comprising contacting one or more selected areas of the surface of a dyed fabric substrate with a solution comprising a phenol oxidizing enzyme system, an enhancing agent, and a thickening agent, under conditions in which dye is removed from said selected areas.
- 2. The method of claim 1, wherein the fabric is a cellulosic fabric, a mixture of cellulosic fibres, or a mixture of cellulosic fibres and synthetic fibres.
- 3. The method of claim 1, wherein the fabric is selected from the group consisting of cotton, cotton denim, polyester, spandex, silk, wool, cellulosic fibers, and mixtures of any of the foregoing.
- 4. The method of claim 1, wherein the dye is selected from the group consisting of indigo and indigo-related dyes.
- 5. The method of claim 1, wherein the phenol oxiding enzyme is selected from the group consisting of peroxidase, laccase, chatechol oxidase, bilirubin oxidase, and monophenol monooxygenase.
- 6. The method of claim 1, wherein the enhancing agent is selected from the group consisting of 2-(p-aminophenyl)-6-methylbenzothiazole-7-sulfonic acid, N-(4-(dimethylamino)benzylidene)-p-anisidine, 3-methyl-2-benzothiazolinone(4-dimethylamino)benzylidene)hydrazone, vanillin azine, 4-amino-4'-methoxystilbene, 4,4'-diaminostilbene-2,2'-disulfonic acid, iminostilbene, 4,4'-dihydroxybenzophenone, N-benzylidene-4-biphenylamine, 4,4'-diaminodiphenylamine, 4,4'-dimethoxy-N-methyldiphenylamine, 2,7-diaminofluorene, triphenylamine, 10-methylphenothiazine, 10-phenothiazine-propionic acid, N-hydroxysuccinimide-10-phenothiazine-propionate, 10-ethyl-4-phenothiozine-carboxylic acid, 10-ethylphenothiazine, 10-propylphenothiazine, 10-isopropylphenothiazine, methyl-10-phenothiazinepropionate, 10-phenylphenothiazine, 10-allylphenothiazine, 10-(3-(4-methyl-1-piperazinyl)propyl)phenothiazine, 10-(2-pyrrolidinoethyl)phenothiazine, 2-acetyl-10-methylphenothiazine, 4-carboxy-10-phenothiazine, 10-methylphenoxazine, 1-ethylphenoxazine, 10-phenoxazine-propionic acid, 4-carboxy-10-phenoxazine-propionic acid, 10-(2-hydroxyethyl)phenothiazine, 10-(2-hydroxyethyl)phenoxazine, 10-(3-hydroxypropyl)phenothiazine, benzidine, 3,3'-dimethylbenzidine, 3,3'-dimethoxybenzidine, 3,3',5,5'-tetramethylbenzidine, 4'-hydroxy-4-biphenylcarboxylic acid, 4,4'-dihydroxybiphenylene, 6-hydroxy-2-napthoic acid, 7-methoxy-2-napthol, 7-amino-2-naphthalene sulfonic acid, 5-amino-2-naphthalene sulfonic acid, 1,5-diaminonaphthalene, 7-hydroxy-1,2-naphthimidazole, 5-amino-2-naphthalenesulfonic acid, 7-methyoxy-2-naphtol, acetosyringone, methylsyringate, ethylsyringate, propylsyringate, butylsyringate, hexylsyringate, and octylsyringate.
- 7. The method of claim 1, wherein the phenol oxidizing enzyme system comprises peroxidase and a source of hydrogen peroxide.
- 8. The method of claim 1, wherein the phenol oxidizing enzyme system and enhancing agent comprise laccase and 10-phenothiazine-propionic acid.
- 9. The method of claim 1, wherein the conditions under which dye is removed comprise incubation at a temperature of between about 25.degree. C.-120.degree. C.
- 10. The method of claim 9, wherein the incubation is for a time period of between 2-60 min.
- 11. The method of claim 1, wherein indigo dyed denim is (a) incubated with the solution for a time period of between 5 min to 3 hours and at a temperature of between about 20.degree. C. to 100.degree. C.
- 12. The method of claim 10, wherein the phenol oxidizing enzyme system and enhancing agent is comprised of a solution of laccase and 10-phenothiazine-propionic acid.
- 13. The method of claim 11, wherein the phenol oxidizing system and enhancing agent are present in a paste.
- 14. The method of claim 11, further comprising the step of (b) washing the incubated fabric in the presence of a source of hydrogen peroxide.
- 15. The method of claim 14, wherein the source of hydrogen peroxide is selected from the group consisting of perborate, percarbonate, peroxide, and carbonate.
- 16. The method of claim 15, wherein the washing is conducted for between 2-60 min at a temperature of between 25.degree. C.-100.degree. C.
- 17. The method of claim 14, further comprising the step of (c) extracting the washed fabric.
- 18. The method of claim 11, wherein prior to incubation the indigo dyed denim is treated by desizing and/or contact with cellulase.
- 19. A method for enzymatic discharge printing, comprising the steps of:
- (a) contacting one or more selected areas of the surface of a dyed fabric substrate with a phenol oxidizing enzyme, and
- (b) contacting the enzyme-containing fabric substrate of step (a) with an aqueous solution comprising an enhancing agent and a thickening agent under conditions in which dye is removed from said selected areas.
- 20. A method for enzymatic discharge printing, comprising the steps of:
- (a) contacting one or more selected areas of the surface of a dyed fabric substrate with an enhancing agent, and
- (b) contacting the fabric substrate of step (a) with a solution comprising a phenol oxidizing enzyme and a thickening agent under conditions in which dye is removed from said selected areas.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims the benefit under 35 U.S.C. 119 of provisional application Ser. No. 60/061,001 filed Apr. 17, 1997, the contents of which are fully incorporated herein by reference.
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