Patent GB-514529-A (GB)
Title: Improvements in or relating to the treatment of textile materials
IPC: D06P1/44
Filed: 1938-05-09
Abstract: 514,529. Dyeing textiles. WAINWRIGHT, J. A., and ALLAN, J. May 9, 1938, No. 13792. [Class 15 (ii)] Printing.-Pattern effects are produced on textile materials by the operations of (a) in either order applying locally a substance capable of precipitating albumen and applying a composition containing albumen, a pigment and a dyestuff having affinity for the materials, or a compound convertible into such a dyestuff, and thereafter fixing the albumen on at least a part of those areas to which the precipitant was not applied and, if necessary, converting the compound into the dyestuff, or (b) applying a composition containing albumen and a pigment, applying locally a substance capable of precipitating albumen and fixing the albumen on at least a part of those areas to which the precipitant was not applied. Specified precipitants are citric and tartaric acids, zinc sulphate and ammonium nitrate and they may be applied in conjunction with thickeners such as gum tragon, British gum, locust bean thickening or a water-soluble high viscosity hydroxyethyl ether of cellulose such as is described in Specification 494,267. Specified white pigments are titanium dioxide, barium sulphate and lithopone but coloured pigments may be used instead or in addition. Specified dyestuff compounds convertible into dyestuffs are azo dye components, leuco vat dyestuffs and esters thereof. In examples (1a) a cellulose acetate satin fabric is printed with an aqueous composition containing tartaric acid and gum tragon, dried, printed in an overlapping design with an aqueous composition containing 1-(#- hydroxyethyl) - aminoanthraquinone, titanium dioxide, albumen and gum tragon, dried, steamed, washed to remove unfixed titanium dioxide, rinsed and dried to obtain a lustrous and delustred pink pattern ; (1b) the dyestuff in (1a) is replaced by 1:5-dihydroxy-4-methylamino-8-aminoanthraquinone to obtain a lustrous and delustred blue pattern ; (2a) a similar fabric is printed with an aqueous composition containing tartaric acid, a water-soluble high viscosity hydroxyethyl cellulose and 1-(#-hydroxyethyl)-aminoanthraquinone, dried, overprinted using a small check cover roller, with an aqueous composition containing 1-(#- hydroxyethyl) - aminoanthraquinone, titanium dioxide, albumen and gum tragon, dried, steamed, washed to remove unfixed titanium dioxide, rinsed and dried to obtain pink lustrous areas with small 'checks of lustrous red and uncoloured lustrous areas with small. checks of delustred pink ; (2b) the dyestuff in (2a) is replaced by 1 : 5-dihydroxy-4-methylamino-8-aminoanthraquinone to obtain a similar pattern effect with light and dark blue replacing the pink and red respectively ; (2c) a similar fabric is similarly treated using the precipitant composition of (2a) and the pigment composition of (2b) to obtain pink lustrous areas with small checks of lustrous purple and uncoloured lustrous areas with small checks of delustred blue ; (2d) a similar fabric is similarly treated using a precipitant composition as in (2a), with the dyestuff replaced by 2 : 4-dinitro- 4'-aminodiphenylamine, and the pigment composition of (2b) to obtain yellow lustrous areas with small checks of lustrous green and blue delustred small checks on uncoloured lustrous areas with small checks of delustred blue ; (3) a similar fabric is similarly treated using a precipitant composition as in (2a), but containing no dyestuff, and a pigment composition containing 2 : 4-dinitro-4<1>-aminodiphenylamine. Monastral blue, titanium dioxide, albumen and gum tragon to obtain lustrous uncoloured areas with small checks of lustrous yellow and uncoloured lustrous areas with small checks of delustred green ; (4) a cotton or regenerated cellulose fabric is printed with an aqueous composition containing tartaric acid and locust bean thickening, dried, printed in an overlapping design with an aqueous composition containing Diazo fast red 7BL, titanium dioxide, albumen and locust bean thickening, dried, steamed, washed to remove unfixed titanium dioxide, rinsed and dried to obtain a lustrous and delustred pink pattern ; (5) a similar fabric is printed with an aqueous composition containing "Rapidogen" (Registered Trade Mark) scarlet R, Glyecine A, ethylene glycol, Rapidogen developer N, titanium dioxide, albumen and starch-gum tragon thickening, printed in an overlapping design with an aqueous composition containing tartaric acid and locust bean thickening, dried, steamed, washed to remove unfixed titanium dioxide, soaped, rinsed and dried to obtain a lustrous and delustred scarlet pattern.