Enzymatic treatment of denim
AssigneeNovo Nordisk A/S
InventorsLisbeth Kalum, Bente Konggaard Andersen
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Abstract
A method of introducing into the surface of dyed denim fabric or garment, localized areas of variations in colour density, the method comprising contacting the fabric or garment with an aqueous composition comprising an effective amount of a pectolytic enzyme preferably selected from the group consisting of pectin lyases (EC 4.2.2.10), galactanases (EC 3.2.1.89), arabinanases (EC 3.2.1.99), pectin esterases (EC 3.1.1.11), mannanases (EC 3.2.1.78), polygalacturonases (EC 3.2.1.15) and pectate lyases (EC 4.2.2.2) at a pH of the aqueous composition between 3 and 11 and a temperature of or below 90.degree. C.
Claims36
A method of treating dyed denim fabric or garment comprising, contacting said dyed denim fabric or garment with an aqueous composition comprising an amount of pectolytic enzyme, effective to introduce to the surface of the dyed denim fabric or garment localized areas of variations in colour density, at a pH of 4 to 8.
A method for treating a dyed denim fabric or garment comprising, contacting said dyed denim fabric or garment with an aqueous composition comprising an amount of cellulolytic enzyme and pectolytic enzyme, effective for providing enzymatic abrasion of the fabric or garment to provide an improved enzymatic stone-washed garment, at a pH of 4 to 8.
A method for treating a dyed denim fabric or garment during finishing comprising, contacting said dyed denim fabric or garment with an aqueous composition comprising an amount of pectolytic enzyme, at a pH of 4 to 8, thus removing back stained dye from the dyed denim fabric or garment.
Dependencies are inferred from the claim text.