Patent GB-508554-A (GB)
Abstract: 508,554. Printing textiles. GROVES, W. W. (I. G. Farbenindustrie Akt.-Ges.) Dec. 31, 1937, No. 36227. [Classes 2 (iii) and 15 (ii)] Textile fabrics are printed with compositions containing a vat dye, a reducing agent, a thickening agent soluble or capable of swelling in water, a water-soluble salt of an acid orthophosphoric acid ester containing at least one. aliphatic or cycloaliphatic hydrocarbon radical having at least 6 carbon atoms, and, if desired, additional ingredients known in vat dyestuff printing pastes. The compositions may also contain an aliphatic or cycloaliphatic alcohol or ketone which may be halogenated, e.g. the bye-products obtained in the synthetic manufacture of methanol, or cyclohexanol, butanol, chloropropanol or chlorobutanol. Vat dyes of all types may -be employed, e.g. anthraquinone derivatives, indigoid, thioindigoid and sulphur dyes. The acid orthophosphoric acid esters are prepared by reacting an alcohol, or mixture of alcohols, e.g. those obtained,in the synthetic manufacture of methanol from carbon monoxide or in the reduction of mixtures of fatty acids or in the oxidation of paraffin, with orthophosphoric acid, phosphorus pentoxide or an orthophosphoric acid chloride, and may be used in the form of their alkali salts or of the salts which they form with organic bases. Products may also be used which are obtained by treating phosphorus pentoxide with an excess of an alcohol under such conditions that complete esterification does not. occur. In examples : (1) the sodium, salt of the reaction product of phosphorus pentoxide and a mixture of hexyl and heptyl alcohols is mixed. with n-butyl alcohol, water and 2 : 1 : 2<1> : 1<1>-naphthioindigo and the product mixed with a printing thickening of wheat starch, tragacanth, British gum, glycerol, potash, sodium formaldehyde sulphoxylate and water; cotton and artificial silk fabrics may be printed with the resulting paste ; (2) cyclohexanol replaces the n-butyl alcohol in (1) ; (3) cyclohexanol and the sodium salt of a phosphoric acid mono-ester from a mixture of hexyl and heptyl alcohols are added to a printing paste comprising 3.4.8.9-dibenzpyrene- 5 : 10-quinone, glycerol, wheat starch, British gum, tragacanth, crystal gum, potassium carbonate, sodium formaldehyde sulphoxylate and water ; (4) a naphthoylene-di-(benzimidazole) replaces the dibenzpyrenequinone of (3), and the product may be used for prints on artificial silk or on mixed fabrics of cotton and artificial silk or artificial silk staple fibre; (5) 2 : : I : 21 - 1<1>-naphththioindigo replaces the dibenzpyrenequinope of (3); (6) an aqueous solution of the sodium salt of a phosphoric acid monoester from a mixture of hexyl and heptyl alcohols and cyclohexanol are added to a printing paste comprising 2 : 1 : 2<1> : 1<1>-naphththioindigo, a naphthoylene-di-(benzimidazole) or the condensation product of 8-chloro-1 : 2- naphthoxythiophene and 5-bromisatin-alpha-chloride and wheat starch, tragacanth, British gum glycerol, potassium carbonate, sodium formaldehyde sulphoxylate and water; (7) a mixture of primary alcohols obtained in the synthesis of methanol is added to phosphorus pentoxide, the product neutralized with caustic soda, diluted with water and added to one of the printing pastes of (6) ; (8) the product obtained by reacting phosphorus pentoxide with n-octyl alcohol, neutralizing with caustic soda and evaporating to dryness after removal of the non- consumed oil is added to 2 : 1 : 2<1> : 1<1>-naphththioindigo and the mixture added to the thickening of (1) ; (9) 1-chlor-2-propanol is used in the paste of (8) and the naphththioindigo may be replaced by, the condensation product of 8-chloro-l: 2-naphthoxythiophene and 5-bromisatin-alpha-chloride, 3.4.8.9-dibenzpyrene 5.10 - quinone, 4.4<1>-dimethyl-7.7<1>-dichlorothioindigo, a naphthoylene-di-(benzimidazole) or the dyestuff described in example 6, of Specification, 297,376; [Class 2 (iii)],; (10) phosphorus oxychloride is heated with a mixture of benzene and alcohols obtained in the synthesis of methanol, cooled, washed, neutralized with caustic soda, evaporated to dryness and the product mixed with 2 : 1 : 2<1> : 1<1>- naphththioindigo, n-buty.1 alcohol and water, the resulting paste being mixed with the thickening of (I).