Patent GB-641580-A (GB)
Title: Textile dressing materials
Inventor: OXLEY HORACE FINNINGLEY
IPC: D06M13/256
Filed: 1948-03-17
Abstract: Textile materials which may be composed of organic derivatives of cellulose, e.g. esters or ethers, are dressed with a diethyl-amine salt of an organic sulphonic acid which may be an aliphatic sulphonic acid, e.g. one in which the aliphatic radical is an unsubstituted saturated hydrocarbon radical containing more than eight carbon atoms and particularly ten, twelve or more carbon atoms in a straight chain arrangement.  The sulphonic acid may be lauryl, cetyl or stearyl sulphonic acid.  The diethylamine salt may be applied to the textile material together with a lubricating oil which may be mineral oil, an animal or vegetable oil or a mixture of a mineral oil and a vegetable oil.  The textile materials may be cellulose esters such as the acetate, propionate, aceto-propionate, or aceto-butyrate. Alternatively they may be natural fibres such as silk or synthetic polyamides such as those obtained by the self-condensation of aliphatic amino carboxylic acids (e.g. epsilon-amino-caproic acid), or by condensation of diamines with dicarboxylic acids, e.g. condensation of hexamethylene diamine with adipic acid, such as "Nylon 66."  The textile materials may be in the form of textile fibres such as continuous filaments, e.g. continuous filament, yarns, or in the form of staple fibres such as yarn, loose fibres, rovings or slivers.  The diethylamine salt may be applied in aqueous solution to the textile material and the latter then freed from any excess liquid and allowed to dry, and a lubricating oil may also be applied to the material in a separate operation. Alternatively the salt may be applied dissolved in a textile lubricating oil which may be a vegetable oil, such as coconut, olive or arachis oil or may be composed of esters of polymerized and/or oxidized unsaturated fatty acids, especially esters of monohydric alcohols such as cyclohexanol or methyl cyclohexanol, e.g. the polymerized and oxidized oleic acid ester of methyl cyclohexanol.  The solubility of the salts in lubricating oils may be increased by the addition of a higher fatty alcohol, particularly one containing twelve or more carbon atoms in the molecule, e.g. lauryl or oleyl alcohol.  Other hydroxyl compounds such as cyclohexanol or methylcyclohexanol may also be present. An example of a composition contains 5-10 per cent of diethylamine lauryl sulphonate, 5-10 of methyl cyclohexanol, 5 of oleyl alcohol, 42.5-37.5 of white medium viscosity mineral oil and 42.5-37.5 of arachis oil and/or olive oil.  In the example of a method of preparing a composition, 37 parts by weight of diethylamine lauryl sulphonate are dissolved in 52 of methylcyclohexanol (technical mixture of isomerides) and 7 of lauryl alcohol.  Sufficient triethanol amine (about 4 parts) is added to render the mixture slightly alkaline and the whole is then diluted with a mixture of equal parts of white mineral oil and arachis oil until the sulphonate content is about 7.5 per cent.  The resulting lubricant is then applied to dry spun cellulose acetate yarn.  The sulphonate may be prepared with a crude diethyl-amine containing a few per cent of triethylamine. The sulphonates are said to reduce the tendency of textile fibres to develop and retain electrostatic charges during manipulation.ALSO:Various types of textile materials (see Group IV (c)), are dressed with a diethylamine salt of an organic sulphonic acid and a lubricating oil.  The acid may be an aliphatic sulphonic acid, e.g. one in which the aliphatic radical is an unsubstituted saturated hydrocarbon radical containing more than eight, and particularly ten, twelve or more carbon atoms in a straight chain arrangement, such as lauryl, cetyl or stearyl sulphonic acid.  The lubricating oil may be a mineral oil, an animal oil or a vegetable oil such as coconut, olive or arachis oil or a mixture of a mineral oil and a vegetable oil.  Alternatively the lubricating oil may be composed of esters of polymerized and/or oxidized unsaturated fatty acids, especially esters of monohydric alcohols such as cyclohexanol or methylcyclohexanol, e.g. the polymerized and oxidized oleic acid ester of methyl cyclohexanol. The lubricating oil and the salt may be applied to the textile materials in separate operations, the salt being applied, for example, in aqueous solution.  Alternatively the salt may be applied in solution in the lubricating oil, and the solubility of the salt in the latter may be increased by the presence in the composition of a higher fatty alcohol, particularly one containing twelve or more carbon atoms in the molecule, e.g. lauryl or oley alcohol.  Other hydroxyl compounds such as cyclohexanol or methyl cyclohexanol may also be present.  An example of a composition is 5-10 per cent of diethylamine lauryl sulphonate, 5-10 of methyl cyclohexanol, 5 of oleyl alcohol, 42.5-37.5 of white medium viscosity mineral oil and 42.5-37.5 of arachis oil and/or olive oil.  In the example of a method of preparing a composition, 37 parts by weight of diethylamine lauryl sulphonate are dissolved in 52 of methylcyclohexanol (technical mixture of isomerides) and 7 of lauryl alcohol.  Sufficient triethanolamine (about 4 parts) is added to render the mixture slightly alkaline and the whole is then diluted with a mixture of equal parts of white mineral oil and arachis oil until the sulphonate content is about 7.5 per cent.  The sulphonate may be prepared with a crude diethylamine containing a few per cent of triethylamine.  The sulphonate functions as an anti-static.