Process and apparatus for dyeing textiles
AssigneesSanko Tekstil Isletmeleri San. Ve Tic. A.S., Rijksuniversiteit Groningen
InventorsNikola LONCAR, Jitka ERYILMAZ, Ece SENEL, Gokhan KAPLAN, Marco FRAAIJE, Ozgur COBANOGLU
Life of this patent
Estimating the term…
Abstract
This invention relates to a process and apparatus for dyeing of textiles, to an immobilized enzyme comprised in said apparatus required for carrying out the process, and to a method to produce enzymatically indigo and derivatives thereof.
Claims28
A process for dyeing a textile (22), comprising an enzymatic synthesis of a dye precursor, characterized in that it comprises the following steps:
- a) contacting a solution comprising at least a first dye precursor (112) with at least a first immobilized enzyme (12), to convert at least part of said first dye precursor (112) into at least a second dye precursor (113), to obtain a solution comprising said at least second dye precursor (113);
- b) generating a flow of said solution comprising said second dye precursor (113), whereby said solution comprising said second dye precursor (113) flows from said first immobilized enzyme (12) to said textile (22);
- c) contacting said solution comprising said second dye precursor (113) with said textile (22);
- and
- d) converting at least part of said second dye precursor (113) to at least one dye (111), whereby at least part of said textile (22) is dyed;
- wherein said first immobilized enzyme (12) is spaced apart from said textile (22).
An apparatus (10) for dyeing a textile (22) comprising a first chamber (11) containing at least a first immobilized enzyme (12) and a solution comprising at least a dye precursor, at least a second chamber (21) containing a textile (22), and means to generate a flow of a solution (50), wherein said first chamber (11) is in fluid connection with said second chamber (21) whereby said solution comprising at least a dye precursor can flow from said first chamber (11) to said second chamber (21) where at least part of said dye precursor is converted to a dye (111) to dye at least part of said textile (22), and wherein said second chamber (21) optionally comprises outlet means (21a) to remove said solution from said second chamber (21).
19-20. (canceled)
A method for the production of indigo or an indigo derivative by enzymatic synthesis that comprises the following steps:
- a′) converting tryptophan or a tryptophan derivative in the presence of at least a tryptophanase, to obtain indole or an indole derivative;
- b′) hydroxylating said indole or said indole derivative obtained in step a′) in the presence of at least an oxidizing enzyme, to obtain indoxyl or an indoxyl derivative;
- and
- c′) converting said indoxyl or said indoxyl derivative obtained in step b′) to indigo or an indigo derivative.
Dependencies are inferred from the claim text.