27-02-1933 дата публикации
Номер: GB388427A
Автор:
Artificial filaments, e.g. of cellulose acetate, are soaked in liquids comprising alkylolamines and/or their derivatives, the o -amino-alkylamides of fatty acids, di- or poly-hydric alcohol derivatives in which some of the hydroxy groups are esterified by fatty acids, or mixtures thereof, and cut into staple lengths, both wetting and cutting being carried out continuously with the production of the filaments. The treatment is stated to remove difficulties due to electrification of the fibres and slipping of the fibres over one another. Suitable substances are mono-, di-, or tri-ethanolamine, propanolamine, dioxypropylamine, hydroxyethylaniline, and the salts, soaps, esters, or acid amides of such compounds with higher fatty acids, e.g. capric, lauric, myristic, oleic, and stearic acids; also glycerol mono-oleate, glycerol di-oleate, ethylene glycol mono-oleate, diethylene glycol mono-oleate, or the corresponding esters of stearic, palmitic, or ricinoleic acid. Solutions of ethanolamines in paraffin oils are particularly mentioned. The fibres may be dried directly, or may be subjected to a preliminary centrifuging operation to bring the liquid content down to about 30-40 per cent, in which case a more concentrated alkylolamine &c. solution is used. Roughening media such as silica, barytes, lithopone, kieselguhr, or the soluble salts of Specification 372,797, and also a lubricant, e.g. olive oil, may be applied conjointly with or separately from the alkylolamines or the like. The bodies applied to the fibres may be removed immediately after spinning, or may be removed by the usual scouring operation applied to the fabric. The fibres may be spun alone or in admixture with other fibres, e.g. fibres of viscose, silk, cotton, or wool. Specifications 317,026, [Class 120 (iii), Yarns &c.], 359,511, [Group IX], 387, 003 and 387,004 also are referred to.
Подробнее
