Treatment of fibers with arylating agents to enhance disperse dyeability
AssigneeWool Development International Limited
InventorDavid M. Lewis
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Abstract
A method for treating natural textile fibres and synthetic polyamide fibres to enhance their affinity for disperse dyestuffs which comprises treating the fibres with an aqueous solution or dispersion of an arylating agent. The arylating agent contains both a benzene or naphthalene ring and a reactive group, such as a halo-triazine group. The fibres may be treated by exhaustion from long liquors or by padding, and the affinity for disperse dyestuffs is considerably increased thereby.
Claims12
The method of treating cellulosic and wool fibres to enhance their affinity to disperse dyestuffs which comprises treating the fibres with an aqueous solution or a dispersion of an arylating agent selected from the group:
- 2,4 dichloro-s-triazin-6ylaminobenzene;
- 1-(2,4 dichloro-s-triazin-6ylamino)-4-butyl benzene;
- 2,chloro-4,6-dianilino-s-triazine;
- 1-(2,4-dichloro-s-triazin-6ylamino)-4-dodecyl benzene;
- N-(2,4-dichloro-s-triazin-6yl)diphenylamine;
- potassium benzenesulphonylethyl sulphate;
- benzene vinyl sulphone;
- sodium N-benzamidoaminobenzene-4-sulphato ethyl sulphone;
- sodium 1'-(2-chloro-4-anilino-s-triazin-6yl)-amino benzene 4'-sulphato ethyl sulphone;
- sodium 2-chloro-4,6-di(amino benzene 4'-sulphato ethyl sulphone)-s-triazine;
- sodium 2,4,6-tri(amino benzene 4'-sulphato ethyl sulphone)-s-triazine;
- sodium benzoyl thioglycollate;
- sodium 1-naphthoyl thioglycollate;
- disodio terephthaloyl-bis thioglycollate;
- benzene carboxymethylcarbodithioate;
- and sodium benzene carbamoyl sulphonate.
The method of treating cellulosic and wool fibres to enhance their affinity to disperse dyestuffs which comprises treating the fibres with an aqueous solution or a dispersion of an arylating agent selected from the group:
- ##STR4## wherein R is hydrogen, alkyl, alkoxy, 4-sulphatoethyl sulphone or halogen, M is a metal cation, and R.sup.1 is halogen or aminobenzene-4-sulphato ethyl sulphone.
Dependencies are inferred from the claim text.