Patent GB-496944-A (GB)
Title: Process for dyeing cellulose and cellulose derivatives
IPC: D06P5/22
Filed: 1937-06-03
Abstract: The fastness, especially to wet treatments, of dyeings with acid wool dyestuffs on animalized cellulosic or cellulose derivative materials, e.g. fibres, bands or films, is improved by incorporating with the materials, before, during or after the animalizing step, a practically colourless non-basic organic compound which is a mordant for basic dyestuffs and dyeing with an acid wool dyestuff before or after such incorporation, processes which include a treatment with an alkylating agent in the form of an ester of an inorganic or inorganic-organic acid or a reactive substitution product thereof being excepted.  The mordant, and, if desired, also the animalizing agent, may be incorporated in the solution from which artificial fibres are spun.  Specified animalizing agents are polyalkylenepolyamines, polyalkylene imines, urea and guanidine derivatives, basic products from phenol, formaldehyde and aliphatic mono- or di-amines, reaction products of halogenated hydrocarbons, esters, ketones, polymerizates, &c. with amines, ammonium, phosphonium or sulphonium compounds of high molecular weight and reaction products of aliphatic or aromatic acid esters of polyhydric alcohols, such as the toluenesulphonic acid ester of starch, with nitrogenous compounds.  Such animalizing agents may be applied as such or produced in or on the materials by interaction of components. Specified mordants are tannin, gall nut extract, phenol-sulphur condensation products and their metal compounds, condensation products of phenols with phenolsulphonic acids, of phenols or hydroxyarylsulphones with aldehydes and of phenols with acetylene. In examples: (1) a condensation product of chlorinated paraffin with ethylenediamine (cf. Specification 359,001) is added to a cuprammonium cellulose solution and artificial silk spun therefrom is impregnated for 2 minutes at 80-90 DEG  C., or for a longer time at a lower temperature, in an aqueous bath containing a phenol-sulphur condensation product (cf. Specification 173,313, [Class 15 (ii)]) and sodium carbonate, rinsed, dried and dyed with the dyestuff of the formula <FORM:0496944/IV/1> (cf. Specification 417,014) or with one of the following dyestuffs: sulphanilic acid --> 1-(21-chloro-61-methyl-41-sulpho) phenyl-3-methyl-5-pyrazolone, sulphonated 3-hydroxy-2-quinophthalone (cf. Specification 445,201), o-aminodiphenyl sulphone --> (acid) g -acid (cf. Specification 399,916), p-nitraniline-o-sulphoethylanilide --> (acid) g -acid with nitro group reduced (cf. Specification 164,218, [Class 2 (iii)]), 1 - hydroxy - 4 - (p - toluidino)anthraquinone sulphonated in the benzene nucleus (cf. Specification 21897/00, [Class 2]), the reaction product of 1-amino-4-bromoanthraquinone-2-sulphonic acid with p-aminoacetanilide, 4-chloro-2-aminophenol - 6 - sulphonic acid --> 1 : 5-dihydroxynaphthalene (cf. Specification 18569/02, [Class 2]), or sulphonated 4 : 41 - diamino - 1 : 11 - dianthraquinoxylamine (cf. Specification 201,575, [Class 2 (iii)]); (2) viscose staple fibre or artificial silk is similarly treated and dyed; (3) viscose or cuprammonium cellulose fibres treated as in (1) are dyed together with wool, either in the same dyebath, or as mixed yarn or mixed fabrics; (4) a condensation product of octodecyl bromide with polyethylene-imine is used as animalizing agent in (1) and the materials are dyed with 4-anilido-N-methylanthrapyridone sulphonated in the benzene nucleus (cf. Specification 486/08, [Class 2]); (5) spun viscose fibre containing octodecyl biguanide is treated with a phenol-sulphur compound as in (1) and similarly dyed together with wool; (6) a condensation product of stearic acid chloride with ethylenediamine is added to a cuprammonium cellulose solution and fibres spun therefrom are treated with an aqueous solution at 80-90 DEG  C. containing tannin or a tannin substitute, squeezed, rinsed, treated with a cold solution of tartar emetic and dyed with one of the dyestuffs of (1); (7) cellulose artificial fibre animalized as in (1) is treated with a tannin solution at 75 DEG  C., squeezed, treated with a solution of tartar emetic and dyed with the first dyestuff in (1); (8) acetate artificial silk is treated with a solution at 60-70 DEG  C. of the animalizing agent of (1) and in an acid or neutral solution at 50-60 DEG  C. of a sulphonated condensation product from chlorinated benzyl chloride and phenol (cf. Specification 332,960, [Class 2 (iii)]) and dyed with one of the dyestuffs of (1); (9) and (10) cuprammonium cellulose staple fibre, animalized as in (1), is treated with a solution at 90 DEG  C. of methylenedisalicylic acid or another condensation product from salicylic acid and formaldehyde or from dihydroxydiphenylsulphone and formaldehyde and dyed with an acid wool dyestuff; (11) and (12) a phenolsulphur condensation product is well kneaded into a cuprammonium cellulose or viscose solution containing an animalizing agent as in (1) and the staple fibre spun therefrom is dyed with an acid wool dyestuff; (13) animalized staple fibre as in (1) is treated with a solution of 1 - benzenesulphonaminobenzene - 3 : 5 - dicarboxylic acid - di - (41 - hydroxybenzene - 31 - carboxylic acid) amide (obtained by reaction of benzenesulphonic acid chloride with the compound obtained by reducing the nitro group of the condensation product of 1 mol. nitroisophthalic acid with 2 mols. aminosalicylic acid) and dyed with an acid wool dyestuff; (14) a product obtainable by precipitating the condensation product from chlorinated paraffin and ethylenediamine from its acid aqueous solution by adding a phenol-sulphur condensation product is added to a cuprammonium cellulose solution and fibres spun therefrom are dyed with an acid wool dyestuff; (15) viscose staple fibres spun from a solution incorporating an animalizing agent as in (1) are dyed with 1 - hydroxy - 4 - (p - toluidino) anthraquinone sulphonated in the benzene nucleus and after-treated with an aqueous solution at 60 DEG C. of a phenol-sulphur condensation product containing sodium chloride and sodium carbonate; (16) staple fibre spun from a cuprammonium cellulose solution containing a phenol-sulphur condensation product is treated with an aqueous emulsion at 80-90 DEG C. of the animalizing agent of (1) and dyed with the reaction product of 1 - amino - 4 - bromoanthraquinone - 2 - sulphonic acid with p-aminoacetanilide; (17) and (18) staple fibre from cuprammonium cellulose animalized as in (1) is treated with an aqueous caustic soda solution at 90-100 DEG  C. containing a resin obtainable by condensing formaldehyde (1 mol.) and phenol or a homologue thereof (0,8 mols.) in an acid medium, or containing a similar condensation product from acetylene and phenol, squeezed, treated with cold dilute acetic acid, rinsed, dried and dyed with an acid wool dyestuff such as Supra light yellow GL, Diamond black P2B, or Palatine fast blue BN.  The process described in Specification 484,984 is disclaimed.