Abstract: Chlorine-resistant elastic polyurethane urea fibers containing hydrotalcites coated with metal fatty acid salts which are useful in aqueous, chlorine-containing environments, such as for swimming pool liners, and process for their production.

Abstract: Described are a process for producing elastane yarn having a linear density of at least 2500 dtex by the wet spinning process and the thereby producible coarse linear density elastane yarn having a wide cross section and a low residual solvent content. The process comprises the steps of spinning an up to 35% strength by weight stable-viscosity elastane solution into a coagulation bath, washing and optionally drawing, drying by contact heating, setting, spin finishing and winding the yarn, the filaments leaving the coagulation bath passing around a diverting roller disposed just above the coagulation bath liquid, the as-spun filament linear density amounting to not more than 1% of the value of the final linear density, the jet stretch ratio being within the range from 0.5 to 50, the contact heating temperature being at least 220° C. and the contact time of the elastane yarn being at least 2 seconds.

Abstract: The invention describes elastane packages on cylindrical tubes which are provided with a finishing oil content varying over the filament length, and a method for the production thereof. Instead of being applied uniformly along the filament, the finishing oil is distinctly increased on the outermost part, constituting in particular at least 3%, of the filament wound onto the tubes such that the oil coat in this region is at least 1.2 times higher than in the remaining region of the package. This gives rise to a finishing coat gradient of the package from the outside (high) inwards (low).

Abstract: Method and device for producing elastane threads from spinning solutions using recycled elastane material.

Abstract: An elastance spool is described which comprises a winding of elastane threads having a titre of greater than 160 dtex, particularly from 160 dtex to 1400 dtex, and a bobbin weight of elastane threads of at least 1.5 kg, in which the elastane threads have a ribbon-shaped fiber cross-section, wherein the ratio of the width of the elastane threads to the thickness of the elastane threads in cross-section is at least three to one. The elastane spool is used for the production of textile sheet products and for the production of disposable articles of hygiene.

Abstract: Polyurethane urea fibers produced by a dry or wet spinning process and comprising, in finely dispersed or dissolved form, a mixture of polydimethylsiloxane, alkoxylated polydimethylsiloxane and a fatty acid salt; and a process for their production.

Abstract: Described is wet-spun plural-end elastane yarn having a yarn linear density of up to 2500 dtex, high surface luster and a ribbony cross section and formed from bonded-together individual filaments having an oval to circularly round cross section, the width of the elastane yarn in cross section being at least four times the thickness of the elastane yarn.

Abstract: There is described a method for the storing of elastan filaments with a titre of at least 2,500 dtex in drums with a filament line length of at least 10 km with the use of a displacing device, in which the filaments are stored meandering in layers, and in which the filaments are inlaid into the drum at a speed of at least eight per cent above the production speed of the filaments.

Abstract: Polyurethane-urea compositions are described, and, in particular, elastic polyurethane-urea fibers are described which result therefrom and which contain a dialkylsulphosuccinate as a finely dispersed or dissolved additive which considerably increases the strength of the fibers. Moreover, a method is described of producing polyurethane-urea fibers using a dialkylsulphosuccinate as an additive.

Abstract: Described are a process for producing elastane yarn having a linear density of at least 2500 dtex by the wet spinning process and the thereby producible coarse linear density elastane yarn having a wide cross section and a low residual solvent content. The process comprises the steps of spinning an up to 35% strength by weight stable-viscosity elastane solution into a coagulation bath, washing and optionally drawing, drying by contact heating, setting, spin finishing and winding the yarn, the filaments leaving the coagulation bath passing around a diverting roller disposed just above the coagulation bath liquid, the as-spun filament linear density amounting to not more than 1% of the value of the final linear density, the jet stretch ratio being within the range from 0.5 to 50, the contact heating temperature being at least 220° C. and the contact time of the elastane yarn being at least 2 seconds.

Abstract: Described are a process for producing elastane yarn having a linear density of at least 2500 dtex by the wet spinning process and the thereby producible coarse linear density elastane yarn having a wide cross section and a low residual solvent content. The process comprises the steps of spinning an up to 35% strength by weight stable-viscosity elastane solution into a coagulation bath, washing and optionally drawing, drying by contact heating, setting, spin finishing and winding the yarn, the filaments leaving the coagulation bath passing around a diverting roller disposed just above the coagulation bath liquid, the as-spun filament linear density amounting to not more than 1% of the value of the final linear density, the jet stretch ratio being within the range from 0.5 to 50, the contact heating temperature being at least 220° C. and the contact time of the elastane yarn being at least 2 seconds.

Abstract: An elastane multifilament yarn havig two to six individual filaments which, when being unwound from a bobbin, is splittable into individual filaments, is produced by a process wherein multihole spinning jets are deployed in the spinning head of a conventional dry spinning apparatus, laminarizing the spinning gas flow to prevent entanglement of the individual filaments and passing the resulting yarn through a thread guide with one opening per individual filament.

Abstract: Described is wet-spun plural-end elastane yarn having a yarn linear density of up to 2500 dtex, high surface lustre and a ribbony cross section and formed from bonded-together individual filaments having an oval to circularly round cross section, the width of the elastane yarn in cross section being at least four times the thickness of the elastane yarn.

Abstract: Described is wet-spun plural-end elastane yarn having a yarn linear density of up to 2500 dtex, high surface luster and a ribbony cross section and formed from bonded-together individual filaments having an oval to circularly round cross section, the width of the elastane yarn in cross section being at least four times the thickness of the elastane yarn.

Abstract: The invention relates to a coating compound for fibers and to a process for the production thereof The invention relates in particular to a preparation agent for elastanes, based on a dispersion of fatty-acid metal salts and an agglomeration inhibitor in polyorganosiloxanes and mineral oils. The preparations are produced by a precipitation process from which fined-particle and sedimentation-stable dispersions with a narrow particle size distribution are obtained which are free from agglomerates.

Abstract: This invention relates to biodegradable coating compositions based on readily biodegradable mineral oils. The invention furthermore relates to the use of the coating compositions for dressing plastic mouldings, fibers or yarns. In particular, the coating compositions exhibit advantages during further processing of elastic polyurethane fibers finished with the coating compositions or fabrics produced therefrom.

Abstract: A continuous process and apparatus for the production of melt-spun monofilaments having a diameter of 60 .mu.m to 2500 .mu.m from fiber-forming polymers, wherein the polymer melt is spun into air from a spinning head, laterally quenched in a spinning cabinet with a defined air velocity profile and then cooled in a liquid bath.

Abstract: A spinning noxxle apparatus for the production of elastane filaments from spinning solutions by the wet spinning method comprising a feed line (7) for the spinning solution, a filter unit (1) having a mixer element (2) and a filter element element (3), a spinning nozzle (5) for immersion in a precipation bath (11), and a connection piece (8) for the direct connection of the filter unit (1) and spinning nozzle (5), wherein the spinning nozzle (5) is joined to the connection piece (8) by a quick-release coupling connection (4), particularly a bayonet coupling (4).

Abstract: This invention relates to a new washing apparatus for the continuous production of elastane filaments which are produced by a wet-spinning process, which essentially consists of a stripping unit (10) and a washing unit (11) which are disposed in steps above the precipitation bath (1) of a wet-spinning device.

Abstract: The invention relates to a process for preparing multifilament, wet-spun elastane threads with increased spinning output, which is achieved by largely removing entrained water from the filaments after leaving the spinning bath and then fixing the threads on at least two rollers at a temperature of at least 200.degree. C. for at least 3 seconds.