Patent GB-525233-A (GB)
Abstract: 525,233. Printing. SOC. OF CHEMICAL, INDUSTRY IN BASLE. Feb. 20, 1939, Nos. 5580 and 5581. Convention dates, Feb. 26, 1938 and Jan. 5,1939. [Classes 2 (iii) and 15 (ii)] In printing with the water-soluble acyl derivatives of sparingly soluble dyes referred to in Specifications 480,358, 482,184 and 505,504, unsymmetrical alkylated ureas are incorporated in the printing paste. Usual printing adjurants e.g. urea, alkali phosphates, thiodiglycol ethers, s-ethylthioglycollic acid amide or resorcinol may also be present. In examples (1) cotton is printed with a past& containing the reaction product of benzoic acid m-sulphochloride and 2.5-dichlorahiline # 2.3-oxynaphthoic acido-anisidide, unsymmetrical diethyl urea, water and starch tragacanth thickening, dried, steamed and treated in a solution containing barium chloride and sodium hydroxide; it is then rinsed, soured, rinsed and soaped ; (2) cotton is printed with a paste containing the reaction product of benzoic acid m-sulphochloride and 4-benzoylamino-2.5- diethoxyaniline # 2.3-oxynaphthoic acid anilide, monoethyl urea, water and starch tragacanth thickening and subsequently treated as in (1) ; (3) the diethyl urea of (1) is replaced by a mixture of monoethyl urea and unsymmetrical diethyl urea, monomethyl urea, unsymmetrical dimethyl urea, mono-m-propyl urea or a mixture thereof ; (4) viscose artificial silk is printed with a paste containing the reaction product of benzoic acid m-sulphochloride and 2.5-dichloraniline # 2.3-oxynaphthoic acid oanisidide, monoethyl urea, urea, water and starch tragacanth thickening and subsequently treated as in (1) ; (5) a material of cotton, artificial silk or regenerated cellulose, natural silk, wool or a mixture of two or more of these fibres is printed with a paste containing the reaction product of benzoic acid m-sulphochloride and m-chloganiline # 2.3-oxynaphthoic acid anilide, unsymmetrical diethyl urea, trisodium phosphate, water and starch tragacanth thickening, dried, steamed and treated in a solution containing common salt and sodium hydroxide ; it is then squeezed, allowed to stand in rolled up or folded condition, rinsed, soured, rinsed and soaped ; (6) cotton is printed on a 2-roller machine with the following pastes :-(a) the reaction product of benzoic acid m-sulphochloride and 2.5-dichloraniline # 2.3-oxynaphthoic acid o-anisidide, unsymmetrical diethyl urea, water and starch tragacanth thickening and (b) tetrabromindigo, potash thickening, sodium sulphonylate formaldehyde, urea and water ; the potash thickening comprises wheat starch, tragacanth thickening, British gum, potassium carbonate, glycerine and water ; the cotton is then dried, steamed, treated with a solution containing barium chloride, caustic soda, common salt and sodium nitrobenzene sulphonate, rinsed, treated with a solution containing sulphuric acid and potassium bichromate, rinsed and soaped ; (7) a fabric of cotton, regenerated cellulose, natural silk, wool or mixtures thereof is printed with the paste of (2), dried, steamed, subjected to a hot, moist atmosphere containing ammonia, rinsed and soaped ; (8) cotton is, printed with a paste containing the reaction product of benzoic acid m-sulphochloride and the tertiary condensation product from 1 mol. cyanuric chloride, 2 mols. 2-aminoanthraquinone and 1 mol. aniline, unsymmetrical diethyl urea, starch tragacanth thickening and water, dried, steamed, treated in a solution containing caustic soda, barium chloride and common salt, squeezed, allowed to stand in rolled up or folded condition, rinsed, soured, rinsed and soaped. Specification 512,664 also is referred to.