GB390553A - Improvements in the dyeing of textiles - Google Patents

Abstract

Substance dyes, dyeing with; regenerated celluloses, dyeing.--The fastness to water of dyeings produced on cellulosic materials with water-soluble substantive dyestuffs is improved by subjecting the dyed materials to treatment with a water-soluble salt of a compound containing at least one basic nitrogen atom and containing an aliphatic residue comprising at least ten carbon atoms, treatment with a salt of a diamine in which one amino group is monoacylated or diacylated (cf. the parent Specification) being excluded. The use of the following types of salts (including quaternary ammonium salts) is specified:--(a) soluble salts of higher aliphatic amines such as diethylcetylamine hydrochloride, dimethyl- or diethyloctodecylamine hydrochloride, octodecyltrimethylammonium methyl sulphate, diethyloctodecenylamine hydrochloride, and pentadecyldihydroimidazole hydrochloride; (b) soluble salts of compounds in which the basic nitrogen atom is connected by an ester or ether linkage to the aliphatic residue comprising at least ten carbon atoms, such as the mixed ether of cetyl alcohol and N-oxymethylpyridinium chloride, the hydrochloride of the stearic acid ester of dimethyl- or diethylaminoethanol, stearoylcholrine chloride, the stearic acid ester of benzyldimethyloxyethylammonium chloride, the palmitic acid ester of 1-oxyphenyl-3-trimethylammonium methyl sulphate, the stearic acid ester of the N-oxyethylpyridinium chloride, the hydrochloride of diethylaminoethyloctodecyl carbonate, and the stearic acid ester of the addition product of glycerine monochlorhydrin or glycerine-a : a <1>-dichlorhydrin and pyridine; the stearoyl and palmitoyl residues in such salts may be replaced by the residues of oleic, capric, lauric, myristic or ricinoleic acids and the cetyl alcohol residue by the oleyl alcohol residue; (c) soluble salts of derivatives of complex amines containing an aliphatic residue comprising at least ten carbon atoms, such as derivatives of diethylenetriamine or triethylenetetramine (cf. Specification 337,368, [Class 2 (iii), Dyes &c.]). The following examples are specified. (1) Cotton yarn, dyed in a sodium sulphate bath containing Cotton yellow CH and rinsed, is treated in a bath containing 0,1 per cent of the hydrochloride of diethyloctodecylamine hydrochloride, centrifuged and dried. (2) Viscose silk, dyed at the boil in a sodium sulphate bath containing Chlorantine red 8BN and washed, is treated in a bath containing 0,05 per cent of the cetyl ether of N-oxymethylpyridium chloride, centrifuged and dried. (3) Cotton, dyed with Direct sky-blue, green shade, is treated in a bath containing 1 per cent (on the weight of the cotton) of the oleic acid ester of oxyethylpyridinium chloride, centrifuged and dried. The Provisional Specification refers to the treatment of half-silk, silk, and half-wool goods and to printing. Dimethyl- and diethyloctodecylamines are obtained by interaction of dimethyl- and diethyl-amines with octodecyl bromide. Octodecyltrimethylammonium methyl sulphate is obtained by addition of dimethyl sulphate to dimethyloctodecylamine. Diethyloctodecenylamine is obtained by interaction of diethylamine with octodecenyl bromide. Pentadecyldihydroimidazole is obtained by interaction of p ethylenediamine with the iminoether of palmitic acid. The mixed ether of cetyl alcohol and N-oxymethylpyridinium chloride is obtained by addition of pyridine to the condensation product obtained by the action of hydrogen chloride gas on a mixture of formaldehyde and cetyl alcohol. The stearic acid esters of dimethyl- and diethylaminoethanols are obtained by the action of stearoyl chloride on dimethyl- and diethylaminoethanols. The stearic acid ester of benzyldimethyloxyethylammonium chloride is obtained by addition of benzyl chloride to the stearic acid ester of dimethylaminoethanol. The palmitic acid ester of 1-oxyphenyl-3-trimethylammonium methyl sulphate is obtained by addition of dimethyl sulphate to the product of reaction of palmitic acid with m-hydroxydimethylaniline. The stearic acid ester of N-oxyethylpyridinium chloride is obtained by the action of stearoyl chloride on N-o -oxyethylpyridinium chloride. Diethylaminoethyloctodecyl carbonate is obtained by reaction of diethylaminoethanol on the chlorocarbonic acid octodecyl ester obtainable by the action of phosgene on octodecyl alcohol.