Patent GB-609003-A (GB)
Title: Tinting of textile materials
IPC: D06P5/13
Filed: 1946-03-04
Abstract: Filaments, yarns, fabrics and like materials of organic derivatives of cellulose are marked for identification by a process comprising fugitive tinting by means of an aqueous tinting medium comprising an acid dyestuff and a cationic soap.  The invention is applicable to materials of esters and ethers of cellulose such as cellulose acetate, propionate, butyrate, acetate-propionate, acetate-butyrate, ethyl cellulose and benzyl cellulose.  Suitable cationic soaps are Fixanol C (Registered Trade mark) and other quaternary ammonium salts containing a long chain alkyl group such as hexadecyl and octadecyl pyridinium bromide or sulphate, and also the salts and quaternary salts of the mono-acyl-unsymmetrical-N-dialkylalkylene diamines in which the acyl group contains at least 12 carbon atoms such as the monooleoyl and mono-stearoyl-unsymmetrical-N-dimethyl-ethylene diamine hydrochlorides or metho-chlorides.  Suitable compounds on the market are Sapamine KW and Lissolamines A and V (Registered Trade Marks).  The selected compound should yield a clear solution in water with the dye.  Suitable dyes are Azo-Geranine 2GS, Naphthalene Orange 2GS, Xylene Fast Green B, Disulphine Blue FFS, Coomassie Acid Blue RLS and Brilliant Kiton Red B.  The quantity of cation-active soap should be at least equivalent to the dyestuff, and should preferably be from 2-5 times this amount. The dye/catonic soap complex may be applied in conjunction with various lubricants such as arachis oil, triethanolamine oleate and the like.  In addition, anti-static properties are imparted to the fibres.  The complex may be applied by padding or spraying. In an example, a cellulose acetate staple fibre roving is divided into two parts, one part being tinted and lubricated with an emulsion-containing triethanolamine oleate, lubricating oil and 4 grams of Azo-Geranine 2GS per litre, and the other portion tinted with the same emulsion with the addition of 169 per litre of Fixanol C.  Both are steamed for 15 minutes at 100 DEG C., and subsequently scoured in a bath containing per litre 2 g. of soap, 0.59 g. of soda ash and 3 ccs. of a mixture of one part of xylene to nine parts of turkey-red oil.  The first portion shows fixation of the dyestuff and the second is rendered colourless.ALSO:Filaments, yarns, fabrics and like materials of organic derivatives of cellulose are marked for identification by a process comprising fugitive tinting by means of an aqueous tinting medium comprising an acid dyestuff and a cationic soap.  The invention is applicable to materials of esters and ethers of cellulose such as cellulose acetate, propionate, butyrate, acetate - propionate, acetate - butyrate, ethyl cellulose and benzyl cellulose. Suitable cationic soaps are "Fixanol C" (Registered Trade Mark) and other quaternary ammonium salts containing a long-chain alkyl group such as hexadecyl and octadecyl pyridinium bromide or sulphate, and also the salts and quaternary salts of the mono-acyl-unsymmetrical-N-dialkyl-alkylene diamines in which the acyl group contains at least 12 carbon atoms such as the mono-oleoyl and mono-stearoyl-unsymmetrical-N-dimethyethylene diamine hydrochlorides or methochlorides.  Suitable compounds on the market are "Sapamine KW" and "Lissolamines A and V" (Registered Trade Marks).  The selected compound should yield a clear solution in water with the dye.  Suitable dyes are Azo-Geranine 2GS, Naphthalene Orange 2GS, Xylene Fast Green B, Disulphine Blue FFS, Coomassie Acid Blue RLS and Brilliant Kiton Red B.  The quantity of cation-active soap should be at least equivalent to the dyestuff, and should preferably be from 2-5 times this amount.  The dye/cationic coap complex may be applied in conjunction with various lubricants such as arachis oil, triethanolamine oleate and the like.  In addition, anti-static properties are imparted to the fibres.  The complex may be applied by padding or spraying.  In an example, a cellulose acetate staple fibre roving is divided into two parts, one part being tinted and lubricated with an emulsion containing triethanolamine oleate, lubricating oil and 4 grams of Azo-Geranine 2GS per litre, and the other portion tinted with the same emulsion with the addition of 16 g. per litre of Fixanol C.  Both are steamed for 15 minutes at 100 DEG  C., and subsequently scoured in a bath containing per litre 2 g. of soap, 0.59 g. of soda ash and 3 ccs. of a mixture of one part of xylene to nine parts of turkey red oil.  The first portion shows fixation of the dyestuff and the second is rendered colourless.