A reactive navy to black dye composition comprises component A and component B, wherein component A is selected from one or more compounds of formula (I), component B is selected from one or more compounds of formula (II); D.sup.1 and D.sup.2 are each independently a group represented by the following formula (a) or (b) or (c); R.sup.1-R.sup.12 are each independently selected from the group consisting of H, linear or branched C.sub.1C.sub.4 alkyl, C.sub.1C.sub.4 alkoxy and sulfo; m, n=0-3, and every R.sup.3 is each independently selected from the group consisting of amino, sulfo, ureido, C.sub.1C.sub.4 alkanoylamino, C.sub.1C.sub.4 alkoxy and C.sub.1C.sub.4 alkyl, every R.sup.6 is each independently selected from the group consisting of amino, hydroxyl and sulfo; X.sup.1-X.sup.3 are each independently selected from the group consisting of H, C.sub.1C.sub.4 alkyl, C.sub.1C.sub.4 alkoxy, SO.sub.2Y.sup.1, NHCO(CH.sub.2).sub.pSO.sub.2Y.sup.2 and CONH(CH.sub.2).sub.qSO.sub.2Y.sup.3, and at least one of D.sup.1 and D.sup.2 contains a fiber-reactive group, p, q=1-3, and Y.sup.1Y.sup.5 are each independently selected from the group consisting of CHCH.sub.2, C.sub.2H.sub.4OSO.sub.3H and CH.sub.2CH.sub.2Cl. A reactive navy to black dye product comprising the dye composition, has the properties of good washing fastness, high degree of fixation and dye-uptake, good build-up, clear remanent dyeing liquor, and the like. ##STR00001##

A reactive navy to black dye composition comprises component A and component B, wherein component A is selected from one or more compounds of formula (I), component B is selected from one or more compounds of formula (II); D.sup.1 and D.sup.2 are each independently a group represented by the following formula (a) or (b) or (c); R.sup.1-R.sup.2 are each independently selected from the group consisting of H, linear or branched C.sub.1C.sub.4 alkyl, C.sub.1C.sub.4 alkoxy and sulfo; m, n=0-3, and every R.sup.3 is each independently selected from the group consisting of amino, sulfo, ureido, C.sub.1C.sub.4 alkanoylamino, C.sub.1C.sub.4 alkoxy and C.sub.1C.sub.4 alkyl, every R.sup.6 is each independently selected from the group consisting of amino, hydroxyl and sulfo; X.sup.1-X.sup.3 are each independently selected from the group consisting of H, C.sub.1C.sub.4 alkyl, C.sub.1C.sub.4 alkoxy, SO.sub.2Y.sup.1, NHCO(CH.sub.2).sub.pSO.sub.2Y.sup.2 and CONH(CH.sub.2).sub.qSO.sub.2Y.sup.3, and at least one of D.sup.1 and D.sup.2 contains a fiber-reactive group, p, q=1-3, and Y.sup.1Y.sup.5 are each independently selected from the group consisting of CHCH.sub.2, C.sub.2H.sub.4OSO.sub.3H and CH.sub.2CH.sub.2Cl. A reactive navy to black dye product comprising the dye composition, has the properties of good washing fastness, high degree of fixation and dye-uptake, good build-up, clear remanent dyeing liquor, and the like.

##STR00001##

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 method for recycling dye from a dyed textile, the method comprising providing a textile coloured with a dye; adding the textile to a bath comprising a solution of ionic liquid, thereby causing the dye to strip from the textile and to disperse within said solution.

An exemplary embodiment of the present disclosure provides a method of affixing molecules to a polymer material, comprising: placing the polymer material in a reactor; removing at least a portion of sorbed water present in the polymer material; exposing the polymer material to a metal precursor to produce an inorganic-organic polymer hybrid material; and soaking the polymer hybrid material in a solution comprising the molecules.

An exemplary embodiment of the present disclosure provides a method of affixing molecules to a polymer material, comprising: placing the polymer material in a reactor; removing at least a portion of sorbed water present in the polymer material; exposing the polymer material to a metal precursor to produce an inorganic-organic polymer hybrid material; and soaking the polymer hybrid material in a solution comprising the molecules.