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AssigneeCiba-Geigy Corporation
InventorHans-Ulrich Berendt
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Textile cellulose material is printed or dyed with reactive dyes with the aid of foam. The foam is applied by applying to the cellulose material a foamed, aqueous preparation which contains in addition to dyes and fixing alkalis (1) a foam-forming agent (2) a homopolymer or copolymer of acrylamide or methacrylamide or preferably a graft polymer which is obtained from an addition product of an alkylene oxide, preferably propylene oxide, on an at least trihydric aliphatic alcohol, e.g. glycerol, and acrylamide or methacrylamide, and (3) an anionic graft polymer which has as grafting base a copolymerization product from (A) an alkyl acrylate or methacrylate, the alkyl radical having at least 8 carbon atoms, with (B) a dicarboxylic acid diester of an ethylenically unsaturated aliphatic dicarboxylic acid and a polyethylene glycol, a terminal hydroxyl group of the diol having been etherified with a C.sub.1 -C.sub.4 -alkyl radical, and contains as graft constituent side chains which stem from grafted-on polymerizable monomers which contain hydrophilic groups. The cellulose material thus treated is then subjected to a heat treatment, for example steaming, to fix the dye. This very stable preparation produces without the use of thickenings a strong, level and crisp print which at the same time has an excellent handle.
A process for printing or dyeing cellulose-containing textile material with reactive dyes by printing or dyeing the textile material with a foamed, aqueous preparation and fixing the dyes through the action of heat, the preparation containing a reactive dye, a foaming agent, a fixing alkali, a homopolymer or copolymer of acrylamide or methacrylamide or a graft polymer which is obtainable from an addition product of an alkylene oxide onto an at least trihydric aliphatic alcohol having 3 to 10 carbon atoms and acrylamide or methacrylamide, wherein the preparation additionally contains a graft polymer which possesses as grafting base a copolymerization product from (A) an alkyl acrylate or methacrylate, the alkyl radical having at least 8 carbon atoms, with (B) a dicarboxylic acid diester of an ethylenically unsaturated aliphatic dicarboxylic acid and a polyethylene glycol, a terminal hydroxyl group of the glycol having been etherified with a C.sub.1 -C.sub.14 -alkyl radical, and contains as graft constituent side chains which stem from a grafted-on polymerizable monomer which is an ethylenically unsaturated mono- or di- carboxylic acid or a sulfonic acid in each case having at most seven carbon atoms.
An aqueous preparation for printing or dyeing cellulose-containing textile material, containing reactive dyes, foaming agents, fixing alkalis, homopolymers or copolymers of acrylamide or methacrylamide or graft polymers which are obtainable from an addition product of an alkylene oxide on an at least trihydric aliphatic alcohol having 3 to 10 carbon atoms and acrylamide or methacrylamide, wherein the preparation additionally cohtains graft polymers which possess as grafting base a copolymerization product from (A) an alkyl acrylate or methacrylate, the alkyl radical having at least 8 carbon atoms, with (B) a dicarboxylic acid diester of an ethylenically unsaturated aliphatic dicarboxylic acid and a polyethylene glycol, a terminal hydroxyl group of the diol having been etherified with a C.sub.1 -C.sub.4 -alkyl radical, and contain as graft constituent side chains which stem from grafted-on polymerizable monomers which contain hydrophilic groups.
Dependencies are inferred from the claim text.