Patent GB-378473-A (GB)
Title: Improvements in or relating to the colouration of textile and other materials
IPC: D06P1/645
Filed: 1931-02-11
Abstract: Colourations on textile fibres have their fastness increased by the incorporation or application of substantially colourless amino bases containing at least seven carbon atoms and wherein an amino group is not directly attached to an aryl residue or to a carbon atom itself linked to a second nitrogen atom, and of such bases the higher aliphatic amines have also a lubricating effect. Specified bases are aralkylamines, e.g. mono-, di- and tribenzylamines, monobenzylmethylamine, dibenzylmethylamine and dibenzyl w-oxyethylamine, aliphatic amines containing at least seven carbon atoms, e.g. primary and secondary octylamine, amino derivatives of cycloparaffins containing at least seven carbon atoms, and the products of the action of ammonia on halogen aliphatic hydrocarbons containing at least seven carbon atoms. The bases may be applied in the form of aqueous solutions of the free bases or of their salts or in the form of aqueous dispersions produced, for example, by the methods of Specifications 219,349, 224,925, 242,393, 242,711, 269,960, 273,819, [all in Class 1 (i), Chemical processes &c.], 273,820, [Class 2 (iii), Dyes &c.], 322,737, or 323,788, [both in Class 1 (i), Chemical processes &c.].ALSO:Cellulose esters or ethers, dyeing; unspecified types of dyes, dyeing with; dye preparations; cellulose carboxylates; cellulose ethers.--The fastness of colourations on textile materials or materials made of or containing cellulose or cellulose derivatives is improved by incorporating in the materials, before, during or after their colouration, substantially colourless amino bases containing at least seven carbon atoms and wherein an amino group is not directly attached to an aryl residue or to a carbon atom itself linked to a second nitrogen atom, and retaining the bases as such in the materials during subsequent finishing operations. The higher aliphatic bases have also a lubricating effect on the textile materials.  Specified bases are aralkylamines, e.g. mono-, di-, and tribenzylamines, monobenzylmethylamine, dibenzylmethylamine, dibenzyl-o -oxyethylamine, aliphatic amines containing at least seven carbon atoms, e.g. primary and secondary octylamine, amino derivatives of cycloparaffins containing at least seven carbon atoms, and the products of the action of ammonia on halogen aliphatic hydrocarbons containing at least seven carbon atoms.  Other substances capable of improving the fastness, such as those of Specifications 243,841, [Class 15 (ii), Dyeing, Processes &c. for], 340,541, 340,572, 355,726, 361,362, or 361,381, with or without inorganic compounds having an alkaline reaction, such as sodium carbonate, borax, disodium hydrogen phosphate, sodium acetate, sodium palmitate or sodium oleate, may be used in conjunction with the bases.  The bases may be applied in the form of aqueous solutions of the free bases or of their salts or in the form of aqueous dispersions produced, for example, by the methods of Specifications 219,349, 224,925, 242,393, 242,711, 269,960, 273,819, 273,820, 322,737 or 323,788, [all in Class 2 (iii), Dyes &c.].  In the application to artificial materials the bases may be incorporated in the spinning solutions used or may be applied, as such or in solution in a volatile solvent or as an emulsion or dispersion, to the filaments by a wick or like device continuously with their production.  The following examples are specified: (1) A cellulose acetate woven fabric is immersed in an aqueous bath at 75 DEG  C. containing 1 : 5-di-(methylamino)-anthraquinone dispersed in turkey red oil, dibenzylamine and Marseilles soap until the bath is exhausted and is rinsed and finished to obtain a blue dyeing fast to the combined action of light and acids.  (2) A mixed cotton cellulose acetate fabric is immersed in an aqueous bath at 75 DEG  C. containing dispersions of 1 : 4-di-(methylamino) anthraquinone and 2 : 4-dinitrodiphenylamine, a textile soap, a turkey red oil dispersion of the crude mixture of benzylamines obtained by treating benzyl chloride with a solution of ammonia in alcohol for several days, and suitable cotton dyestuffs, e.g. Solar green BL and Solar flavine 3G, until the desired green shade is obtained on both constituents and the fabric is then rinsed and dried.  (3) A cellulose acetate fabric is dyed in an aqueous bath containing monomethyldiaminoanthrarufin and a preparation obtained by stirring dibenzylmethylamine into hot turkey red oil, rinsed, dried or squeezed, immersed in a bath containing borax and thiourea, dried without rinsing and finished. (4) Cellulose acetate yarn dyed blue-violet with 1-methylamino-4-aminoanthraquinone is immersed in a bath containing secondary octylamine and turkey red oil and dried without rinsing. Dibenzylmethylamine is obtained by the action of benzyl chloride on methylamine in alcoholic solution.  Dibenzyl-o -oxy-ethylamine is obtained by the action of benzyl chloride on ethanolamine.