An oxidation intensifier device for a continuous dyeing system for dyeing a warp thread, the device arranged for being mounted in the oxidation assembly of the dyeing system and comprises two blowing assemblies having a substantially identical shape and opposed one another, each blowing assembly is provided with at least one respective fan and, downstream of such a fan, with a respective plurality of convergent conduits arranged along development directions that are parallel and transversal to the feeding direction of the warp thread, the convergent conduits of a first blowing assembly converge in a opposite direction with respect to the convergence direction of the convergent conduits of the opposite blowing assembly, each convergent conduit is configured to face parallel to a single lap of the warp thread moving inside the dyeing system and is provided with a plurality of longitudinal slots oriented along the same development direction of the respective convergent conduit, where each fan is hydraulically connected to the plurality of convergent conduits of the respective blowing assembly and is configured to convey air towards the plurality of longitudinal slots, so that a plurality of opposite air laminar flows is generated, which generate a plurality of turbulences adapted to facilitate the oxidation process of the dyed warp thread on both its surfaces.

Described herein are compositions including O,O-diacetyl leucoindigo. Also described herein are methods of pre-dyeing fibers with O,O-diacetyl leucoindigo, followed by developing the pre-dyed fibers using hydrolysis or oxidation conditions to form indigo-dyed fibers. Also disclosed are indigo-dyed fibers, textiles, and fabrics made using O,O-diacetyl leucoindigo, wherein cellulose, polyester, polyacrylonitrile, nylon, wool, and other compositional fiber types are suitably dyed with indigo dye using the described compositions and methods.

A leuco polymer includes a leuco monomer and an alkene. The leuco polymer has a molecular weight of at least 500 and is obtainable by polymerization of the leuco monomer and one or more alkene co-monomers. The leuco monomer consists of an alkene covalently bound to a leuco moiety and the leuco monomer has a molar extinction coefficient at a wavelength in the range 400 to 750 nm of less than 1000 M.sup.1cm.sup.1. The alkene monomer(s) have a molar extinction coefficient at a wavelength in the range 400 to 750 nm that is less than 100 M.sup.1cm.sup.1. Methods of making the leuco polymer, laundry care compositions comprising the leuco polymer and methods of treating textiles with such laundry care compositions.

The invention relates to a knit fabric. There is a need for knit fabrics made that are comfortable to wear, have good washability and high softness. Good washability implies both dimensional stability of the fabric and maintaining positive surface aspects such as hairiness, pilling and fiber splice even after several washings. This object is solved according to the invention by a knitted fabric made from at least one yarn which consists of or contains lyocell filaments. The resulting fabric has a high wearing comfort and superior mechanical qualities.

A leuco polymer includes a leuco monomer and an alkene. The leuco polymer has a molecular weight of at least 500 and is obtainable by polymerization of the leuco monomer and one or more alkene co-monomers. The leuco monomer consists of an alkene covalently bound to a leuco moiety and the leuco monomer has a molar extinction coefficient at a wavelength in the range 400 to 750 nm of less than 1000 M.sup.1cm.sup.1. The alkene monomer(s) have a molar extinction coefficient at a wavelength in the range 400 to 750 nm that is less than 100 M.sup.1cm.sup.1. Methods of making the leuco polymer, laundry care compositions comprising the leuco polymer and methods of treating textiles with such laundry care compositions.

Dyeing of yarn to create indigo colored outer ring surrounding a white core. The techniques describe ways to keep the white core.

A method for dyeing a modacrylic/cellulosic fabric includes the steps of providing a fabric comprising modacrylic fibers and cellulosic fibers. An aqueous vat dye composition comprising water and a vat dye is applied to the fabric to provide a vat dyed modacrylic/cellulosic fabric. The vat dyed modacrylic/cellulosic fabric is dried. The vat dyed modacrylic/cellulosic fabric is then contacted with a reducing agent. The vat dyed modacrylic/cellulosic fabric is then steamed to promote dye penetration into the fibers. The vat dyed modacrylic/cellulosic fabric is then washed in a first wash step with a wash composition comprising water to remove excess vat dye and reducing agent. The vat dyed modacrylic/cellulosic fabric is contacted with an oxidation oxidizing agent. The vat dyed modacrylic/cellulosic fabric is washed in a second wash step to remove excess oxidation agent.

A fabric has enhanced response characteristics for laser finishing. The fabric can be denim for denim apparel such as jeans. Software and lasers are used to finish apparel made of the fabric to produce a desired wear or distressing pattern or other design. The fabric allows for relatively fast color change in response to the laser, color changes in hue from indigo blue to white, many grayscale levels, and maintains strength and stretch properties. A method used to make the fabric includes spinning, dyeing, and weaving yarns in such a way to obtain the desired enhanced response characteristics for laser finishing.

A fabric has enhanced response characteristics for laser finishing. The fabric can be denim for denim apparel such as jeans. Software and lasers are used to finish apparel made of the fabric to produce a desired wear or distressing pattern or other design. The fabric allows for relatively fast color change in response to the laser, color changes in hue from indigo blue to white, many grayscale levels, and maintains strength and stretch properties. A method used to make the fabric includes spinning, dyeing, and weaving yarns in such a way to obtain the desired enhanced response characteristics for laser finishing.

The present invention relates to a process for producing dyed mixed fibres (D-MF), dyed mixed fibre yarns (D-MY) and/or dyed mixed fibre textile fabrics (D-MT) in which mixed fibres (MF), mixed fibre yarns (MY) and/or mixed fibre textile fabrics (MT) comprising at least one polyester fibre (PF) and at least one further fibre (FF) are simultaneously contacted with at least two different dyes (D1) and (D2) at a temperature T.sub.D<130 C. The at least one polyester fibre (PF) comprises 80 to 99.5% by weight of at least one terephthalate polyester (A), 0.5 to 20% by weight of at least one aliphatic-aromatic polyester (B) and 0 to 5% by weight of at least one additive (C), wherein the % by weight are based in each case on the total weight of components (A), (B) and optionally (C). Moreover, the present invention relates to the dyed mixed fibres (D-MF), the dyed mixed fibre yarns (D-MY) and/or the dyed mixed fibre textile fabrics (D-MT) obtained by this process.