Patent GB-508135-A (GB)
Abstract: 508,135. Dyeing textiles. DURAND & HUGUENIN AKT.-GES. June 7, 1938, No. 16880. Convention date, June 7, 1937. [Class 15 (ii)] Printing.-A locust bean thickening for use in textile printing preparations, i.e. a thickening in which the proportion by weight of locust bean flour to water is not greater than 1 : 20, is improved by incorporating therein a protein or a degraded protein or a substance containing such. Specified. protein ingredients are egg albumen, glue, advantageously degraded by boiling with water, and molasses. The thickening may also contain glycerol, urea or a thick aqueous liquid such as molasses and, if necessary, a preserving agent. A suitable thickening contains locust bean flour (20 parts), glue, advantageously degraded as above, (10 parts), salicylic acid, as preservative (1 part), and water (969 parts). In examples of its use : (1) wool is printed with an aqueous paste containing the dyestuff, 4-nitraniline-2-sulphonic acid # (acid) 1 : 8-aminonaphthol-3 : 6-disulphonic acid (alkaline) # 3-amino-4-sulphobenzene-azo-salicylic acid (cf. Specification 422,287), phenol, glycerol, thickening as above, ammonium oxalate, urea and chromium lactate and steamed and further treated as usual ; (2) cotton is printed with an aqueous paste containing Chromocitronin R, thickening as above and chromium acetate and steamed and further treated as usual ; (3) silk is printed with an aqueous paste containing the dyestuff, salicylic acid # - 4-nitraniline-2-sulphonic acid (nitro group reduced) # salicylic-acid (cf. Specification 255,086, [Class 2 (iii)]), phenol, urea, glycerol, thickening as above, chromium lactate and potassium sulphocyanide and steamed and further treated as usual; (4) silk is printed with an aqueous paste containing Brilliant acid blue A and thickening as above and steamed and further treated as usual; (5) cotton, is printed with an aqueous paste containing the sodium salt of the acid sulphuric ester of leucodibenzpyrenequinone, phenol, urea, thickening as above, sodium carbonate and sodium nitrite, passed through a sulphuric acid bath to develop the colour and further treated as usual ; (6) cotton is printed with an aqueous paste containing the sodium salt of the acid sulphuric ester of leuco-tetrabromindigo, thickening as above; sodium chlorate, ammonium sulpho-, cyanide, ammonium vanadate and ammonia and steamed and further treated as usual ; (7) cotton is printed with an aqueous paste containing Indanthrene brilliant green 4G, urea, , molasses, thickening as above, potassium carbonate and hydrosulphite NF and steamed and further treated as usual ; (8) cotton is printed with an aqueous paste containing a diazoamino compound from 4-nitro-2-aminoanisole and sulphonated anthranilic acid, the 4<1>-anisidide of 2: 3-hydroxynaphthoic acid, caustic soda, ethyl alcohol, glycerol and thickening as above, and steamed and further treated as usual ; (9) cotton is printed with an aqueous paste containing Acridine orange, tartaric acid, thickening as above and tannin and steamed and treated with tartar emetic as usual; (10) silk, dyed with'the dyestuff of (1) above, is printed with an aqueous paste containing hydrosulphite NF, phenol, urea, thickening as above, glycerol and sodium citrate and steamed and further treated as usual.