Patent GB-540877-A (GB)
Title: Process for the production of fast-dyed patterned transparent swelling effects upon cellulose-containing textile fabrics
IPC: D06Q1/02
Filed: 1939-06-28
Abstract: 540,877. Dyeing textiles. HEBERLEIN & CO., AKT.-GES. June 28, 1939, No. 18829. Convention date, July 1, 1938. [Class 15 (ii)] Printing. Fast dyed transparent pattern effects are obtained on textile material containing natural or regenerated cellulosic fibres by printing thereon a composition comprising a substantially neutral or alkaline swelling agent having a parchmentizing action and (a) a waterinsoluble vat dyestuff or a leuco ester thereof or (b) a water-insoluble azo dyestuff of the naphthol series or the stabilized components or stabilized diazo component of such a dyestuff, the dyestuff being fixed in the material either during the swelling operation or by development immediately thereafter. Specified swelling agents are aqueous solutions of zinc chloride, calcium thiocyanate, caustic soda, ammoniacal copper oxide and cellulose-dissolving quaternary bases, such as dimethyldibenzylammonium hydroxide, or tertiary amine oxides, such as dimethylcyclohexylamine oxide. Alternatively, a strongly alkaline swelling agent having a shrinking action, such as caustic soda, may be used and the fabric allowed to shrink under its action before washing out the swelling agent and drying. Specified vat dyes are Ciba blue 2B, Brilliant indigo BASF, Helindone pink BN, Ciba red 3BN, Helindon red BN, Cibanone dark blue BO, Algol yellow GC, Cibanone yellow GK, Algol scarlet GGR, Indanthrene yellow GK, Indanthrene brilliant green B and Cibanone red 4B. Specified insoluble azo dyes are Fast blue BB # Naphthol ASOL and Fast scarlet G# Naphthol AS. The process may be used in conjunction with the treatments with neutral or alkaline parchmentizing agents as described in Specifications 286,831, [Class 15 (ii)], 426,158, 432,389 and 484,094. In examples, (1) mercerized muslin is printed with an aqueous paste containing Cibanone red 4B and a solution of viscose artificial silk waste in concentrated zinc chloride solution and the printed fabric is dried at 100‹C., washed and dried under tension to obtain a fast-dyed red transparent pattern ; a crepe effect may be obtained by allowing the fabric to remain for 3 minutes in a strong solution of caustic soda ; (2) a viscose artificial silk fabric is printed with an aqueous paste containing the azo dyestuff, Fast scarlet G# Naphthol AS and a solution of acetate and viscose artificial silk wastes in concentrated zinc chloride solution and further treated as in (1) to obtain a dyed transparent pattern ; (3) mercerized muslin or voile is printed with an aqueous paste containing Ciba blue 2B and a solution of cotton wadding in an ammoniacal copper oxide solution and the printed fabric is dried, soured with dilute sulphuric acid, washed, mercerized under tension with caustic soda solution, rinsed, soured, washed, rinsed and dried under tension to obtain a fast-dyed transparent pattern ; (4) the amount of cellulose in the printing paste of (3) is increased to obtain highly glazed dyed transparent pattern effects ; (5) mercerized muslin is printed with a paste containing Indigosol blue IBC and a zinc chloride cellulose solution as in (1), dried at 100‹C., developed in an aqueous solution at 30‹C. containing sodium nitrite, sodium sulphate and sulphuric acid, rinsed, stentered and dried ; (6) mercerized muslin is similarly printed with incorporation of sodium nitrite in the printing paste instead of in the developing solution ; (7) mercerized muslin grounded with Naphthol AS-TR is printed with an aqueous paste containing Fast red salt TR and the zinc chloridecellulose solution of (1), dried at 100‹C. and developed first with cold water and then by treatment with dilute sodium carbonate solution, rinsing, treatment with dilute sulphuric acid, washing and drying ; (8) mercerized voile is printed with an aqueous paste made by adding an aqueous solution of Fast red salt TR to an aqueous solution containing Naphthol AS-TR, caustic soda and an ammoniacal copper oxidecellulose solution as in (3), dried, treated with dilute sulphuric acid and further treated as in (3) ; (9) mercerized muslin is printed with an aqueous paste containing Rapidogen red G, caustic soda, turkey red oil and an ammoniacal copper oxide-cellulose solution as in (3), dried and further treated as in (8) to obtain a glazed fast deep-red pattern ; (10) cotton satin, voile or muslin is printed with a paste containing Cibanone red 4B and a solution of cotton linters in an aqueous solution of trimethylbenzylammonium hydroxide, dried, passed through dilute sulphuric acid, rinsed, dried and calendered to obtain a fast-dyed damask-like or transparent pattern ; (11) calico is printed with an aqueous paste containing Rapidogen red G, caustic soda, turkey red oil and British gum, allowed to stand for 5 minutes, treated for ¢ minute with an aqueous solution at 85‹C. containing acetic and formic acids, and Glauber salt, rinsed and dried under low tension. Specifications 439,749, 439,806 and 450,837 also are referred to. The Specification as open to inspection under Sect. 91 comprises also further examples in which (1) a warp satin or calico fabric is printed with an aqueous paste containing Algol scarlet GGR and a solution of viscose artificial silk waste in concentrated zinc chloride solution and the printed material is dried, washed and dried under tension to obtain a dyed damasklike pattern ; (2) calico is printed with an aqueous paste containing Ciba red 3BN, caustic soda and British gum, allowed to stand for 7 minutes, washed, soured, rinsed and dried to obtain fast-dyed shrunk effects ; an artificial silk fabric similarly treated for a shorter time shows a fast-dyed translucent pattern ; (3) calico is printed with an aqueous paste containing Indigosol blue IBC, caustic soda and British gum, allowed to stand for 5 minutes and developed in an aqueous solution at 30-35‹C. containing sodium nitrite and sulphuric acid to obtain a fast deep-dyed shrunk effect ; (4) a cotton warp satin is similarly printed with incorporation of sodium nitrite in the printing paste instead of in the developing solution. This subject-matter does not appear in the Specification as accepted.