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Title: Process for the dyeing of fibrous materials containing basic functions in dyeing baths based on organic solvents
Claims: What is claimed is: 1. A process for the dyeing of fibrous materials having basic functions which comprises dyeing said fibrous materials in a dye bath comprising an organic solvent, an acid dye, water, and emulsifying substance, an organic acid and an aliphatic amine having the general formula: ##STR3## wherein: R is hydrogen or a saturated or unsaturated aliphatic hydrocarbon radical with a linear or branched chain; and where R.sub.1, r.sub.2, and R.sub.3 are saturated or unsaturated aliphatic hydrocarbon radicals with either a linear or branched chain, and the sum of the carbon atoms of radicals R, R.sub.1, R.sub.2, and R.sub.3 is a whole number in the range from 11 to 29. 2. A process according to claim 1 wherein the organic solvent is a chlorinated solvent. 3. A process according to claim 1 wherein there are used acid dyes selected from the group consisting of azoic, anthraquinonic, stibenic, quinophthalonic, phtaloninic and metinic dyes, said dyes having groups selected from among carboxylic groups, sulphonic groups or both carboxylic and sulphonic groups. 4. A process according to claim 1 in which said amine is selected from among N-dodecenyl (trialkylmethyl) amine having from 24 to 28 carbon atoms, N-lauryl (trialkyl-methyl)-amine having from 24 to 28 carbon atoms and the primary trialkylmethyl amines having from 12 to 22 carbon atoms. 5. A process according to claim 1 in which water is present in quantities ranging from 5 to 60% with respect to the weight of the fibre, and the emulsifying substance is present in quantities ranging from 1% to 15% with respect to the weight of the fibre. 6. A process according to claim 1 in which the organic acid is selected from the group consisting of acetic, formic, dodecylbenzenesulphonic acid and anionic surfactants with non-salified acid functions. Other info: Inventors: DeFeo, Francesco (Milan, IT) Gemini, Vincenzo (Milan, IT) Floridia, Luigi (Florence, IT) Application Number: 736511 Filing Date: 1976-10-28 Publication_date: 1978-09-19 Assignee: Montedison S.p.A. (Milan, IT) Primary Class(es): 8/614 8/107, 8/658, 8/673, 8/938 Other Classes: US Patent Ref:
Other Refs:
Color Index, vol. 2 1971, p. 2005. | |