An electrolytic dye reduction method comprises preparing a catholyte by dispersing a dye in a leucodye comprising electrolyte. In a preferred method the leucodye like leucoindigo is the sole dispersing aid.

The present invention relates to a process for dyeing textiles, in particular for dyeing textiles using enzymes. The present invention also relates to a method for producing leuco indigo and/or leuco forms of indigo derivatives. The present invention further refers to textiles obtainable through said process, to an apparatus comprising a reactor containing enzymes, and to a microbial flavin-containing monooxygenase.

A dyeing method includes immersing a fiber into a dye for dyeing the fiber, in which the dye includes indigo and indirubin, and the indigo and the indirubin have a weight ratio of 20:1 to 80:1. The indigo in the dye has a concentration of 0.1% o.w.f. to 5% o.w.f. The dyed fiber may simultaneously have high luminance, high color saturation, high strength of colorization, and sufficient colorfastness.

The present invention relates to a method for the preparation of microparticles and solid microcapsules comprising the following steps: a) the addition, with stirring, of composition C′2 in a composition C3, the compositions C′2 and C3 not being miscible with each other, the composition C′2 being either a monophasic composition C2 or an emulsion (E1) comprising drops of a composition C1, comprising at least one active ingredient, dispersed in a polymeric composition C2, the compositions C1 and C2 not being miscible in each other, the viscosity of composition C3 being greater than 10,000 mPa.Math.s at 25° C. at a shear rate of s.sup.−1 and being less than 10,000 mPa.Math.s at 25° C. at a shear rate of between 100 s.sup.−1 and 100,000 s.sup.−1, wherein an emulsion (E2) is obtained b) applying shear to the emulsion (E2), the applied shear rate being less than 1000 s.sup.−1, wherein an emulsion (E3) is obtained; and c) the polymerization of the composition C′2.

An electrolytic dye reduction method comprises preparing a catholyte by dispersing a dye in a leucodye comprising electrolyte. In a preferred method the leucodye like leucoindigo is the sole dispersing aid.

A leuco composition comprises at least one reactive leuco compound, which reactive leuco compound comprises a leuco moiety and at least one reactive moiety covalently bound to the leuco moiety. A laundry care composition comprises a laundry care ingredient and a leuco composition. A method of treating a textile comprises the steps of (i) treating a textile with an aqueous solution containing a leuco composition, (ii) optionally, rinsing the textile, and (iii) drying the textile.

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.

A leuco polymer comprising a polyethylenimine and at least one leuco moiety covalently bound to the polyethylenimine, wherein the polyethylenimine comprises three or more amine nitrogen atoms and 1 mol. % or more of amine hydrogen atoms in the polyethylenimine are replaced with a moiety selected from the group consisting of 2-hydroxypropyl, 1-hydroxypropane-2-yl, and polyalkoxy groups. Methods of making the leuco polymer, laundry care compositions comprising the leuco polymer and methods of treating textiles with such laundry care compositions.

A laundry care composition including: (a) at least one laundry care ingredient and (b) a leuco composition. The laundry care composition has a HA of at least 10 and produces a relative hue angle on fabric outside the range of 210 to 345. Methods of treating textiles with such laundry care compositions.

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.