US 12,247,350 B2
Process and apparatus for dyeing textiles
Nikola Loncar, Groningen (NL); Jitka Eryilmaz, Inegol-Bursa (TR); Ece Senel, Inegol-Bursa (TR); Gokhan Kaplan, Inegol-Bursa (TR); Marco Fraaije, Groningen (NL); and Ozgur Cobanoglu, Inegol-Bursa (TR)
Assigned to SANKO TEKSTIL ISLETMELERI SAN. VE TIC. A.S., Bursa (TR); and RIJKSUNIVERSITEIT GRONINGEN, Groningen (NL)
Appl. No. 17/261,343
Filed by Sanko Tekstil Isletmeleri San. Ve Tic. A.S., Inegol-Bursa (TR); and RIJKSUNIVERSITEIT GRONINGEN, Groningen (NL)
PCT Filed Jul. 20, 2018, PCT No. PCT/EP2018/069820
§ 371(c)(1), (2) Date Jan. 19, 2021,
PCT Pub. No. WO2020/015839, PCT Pub. Date Jan. 23, 2020.
Prior Publication US 2021/0262162 A1, Aug. 26, 2021
Int. Cl. D06P 1/22 (2006.01); C08B 7/00 (2006.01); C09B 7/00 (2006.01); C09B 67/00 (2006.01); C09B 67/30 (2006.01); D06B 1/04 (2006.01); D06P 1/44 (2006.01)
CPC D06P 1/228 (2013.01) [C09B 7/00 (2013.01); C09B 67/0078 (2013.01); D06B 1/04 (2013.01); D06P 1/445 (2013.01)] 11 Claims
 
1. 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);
wherein said at least first dye precursor (112) is indole and/or derivatives thereof, said at least second dye precursor (113) is indoxyl and/or derivatives thereof, and said at least dye (111) is indigo and/or derivatives thereof;
wherein said first immobilized enzyme is an oxidizing enzyme, whereby said first dye precursor is oxidized to obtain said second dye precursor when contacted by said oxidizing enzyme; and
wherein the pH of said solutions is in the range comprised from 7.0 to 10.0, whereby dimerization of said indoxyl and/or derivatives thereof to indigo and/or derivatives thereof occurs after said solution comprising at least said indoxyl and/or derivatives thereof is contacted to said textile.