[EN] PROCESS FOR THE SIMULTANEOUS TANNING AND DYEING OF COLLAGEN CONTAINING FIBROUS MATERIAL<br/>[FR] PROCÉDÉ DE TANNAGE ET DE TEINTURE SIMULTANÉS DE MATÉRIAU FIBREUX CONTENANT DU COLLAGÈNE
申请人:HUNTSMAN ADV MAT SWITZERLAND
公开号:WO2019158341A1
公开(公告)日:2019-08-22
A process for the simultaneous tanning and dyeing of collagen containing fibrous material, wherein the said material is treated with a liquor containing at least one reactive dyestuff selected from the group of formula (1): A1-(Z1)2-3 and (2)and wherein A1, A2 and A3 are each independently of the others the radical of a monoazo, polyazo, metal-complexed azo, anthraquinone, phthalocyanine, formazan or dioxazine chromophore having at least one sulfo group, B is an organic bridge member, Q1, Q2, Q3 and Q4 are each independently of the others hydrogen or unsubstituted or substituted C1-C4alkyl, G1 und G2 are halogen, 3-carboxypyridin-1-yl or 3-carbamoylpyridin-1-yl, (Z1)2-3 is 2 to 3 identical or different fiber reactive radicals, Z2 and Z3 are each independently of the other identical or different fiber reactive radicals, and b is the number 0 or 1, by combining two steps of leather production, tanning and dyeing, into a single step, thus, preserving resources and reducing the environmental impact.