Abstract: The present invention relates to a method of pulping cotton-based raw material for producing dissolving pulp. More specifically, the invention relates to a process for producing dissolving pulp under alkaline conditions in combination with a gaseous oxidizing agent. The present invention further relates to dissolving pulp obtainable by pulping cotton-based raw material, in particular dissolving pulp obtainable by the method of the present invention, the use of such dissolving pulp for producing regenerated cellulose molded bodies, and methods of producing lyocell or viscose including such dissolving pulp.

Abstract: The invention relates to flame-retardant cellulosic man-made fibers containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several amine groups whereby the fiber has a tenacity of more than 18 cN/tex in a conditioned state. Production process and the use of the fibers according to the invention are further objects of the invention.

Abstract: The invention relates to flame-retardant cellulosic man-made fibers containing a flame-retardant substance in the form of an oxidized condensate of a tetrakis hydroxyalkyl phosphonium salt with ammonia and/or a nitrogenous compound which contains one or several amine groups whereby the fiber has a tenacity of more than 18 cN/tex in a conditioned state. Production process and the use of the fibers according to the invention are further objects of the invention.

Abstract: The present invention relates to a phase-stable suspension of cellulose II in water, having a high water retention capacity and a cellulose concentration between 0.1 and 5.0% by weight, a method of its preparation, and its use.

Abstract: The present invention relates to a direct dissolving process for the production of polysaccharide fibers which contain ?(1?3)-glucan as a fiber-forming substance, with aqueous sodium hydroxide solution as a solvent, as well as to the fibers made thereby, and to their use.

Abstract: The present invention relates to a regenerated cellulosic fiber which contains an incorporated dye pigment and a fluorescent dye applied by overdying, the use of this fiber for the production of yarns and fabrics and a process for the production of these fibers. This fiber satisfies the demands of EN 471 in relation to luminance factor, the chromaticity coordinates and color fastness and possesses a light fastness (ISO 105-B02, process 2) of more than 5.

Abstract: The present invention relates to a cellulosic regenerated fiber which contains an incorporated luminous pigment and an incorporated color pigment and the use of these for the production of yarns, textile fabrics and an article of reflective clothing and a process for the production of these fibers. This fiber satisfies the demands of standard EN 471, standard EN 1150, standard CAN/CSA, standard ANSI/ISEA and standard BS 471 with regard to light density, the color space and fastness values.

Abstract: The present invention relates to cellulose fibers with an enhanced metering capability, a process for the production of these and the use of these for the reinforcement of compound materials, in particular thermoplastic polymers.

Abstract: The present invention relates to a flame-retardant cellulosic regenerated fiber for textile applications which for example also satisfies the demands of industrial dry cleaning, its use for the production of yarns and fabrics and a process for the production of these fibers.

Abstract: The invention relates to blends of high wet modulus cellulosic fibers and solvent spun cellulosic fibers and yarns and fabrics made thereof.

Abstract: The present invention relates to cellulosic particles, a suspension of cellulosic particles and a process for the production of a suspension of cellulosic particles, whereby the cellulosic material is never dried between the dissolution of the cellulose and the disintegration of the suspended cellulose fibers.

Abstract: The invention relates to a process for producing spherical, non-fibrillar cellulose particles with a particle size in the range of from about 1 ?m to about 400 ?m from a solution of cellulose in which the solution is cooled down to below its solidification temperature wherein it is flowing freely, the solvent is washed out, the solidified cellulose solution is disintegrated to form cellulose powder comprising particles, and the disintegrated and washed out particles are dried. The invention also relates to the cellulose powder and particles made in accordance with the process of the invention.

Abstract: The invention relates to yarns and fabrics containing nylon staple fiber and high-tenacity man-made cellulosic staple fiber, and garments made therefrom, and has particular reference to fabrics having a high resistance to wear whilst retaining a high comfort level.

Abstract: The present invention relates to a high-tenacity cellulosic regenerated fiber with an individual fiber titer of between 0.6 and 0.9 dtex and yarns and planar textile structures which contain regenerated fibers of this kind.

Abstract: A method of regulating the composition of the cellulose-containing extrusion solution in the production of cellulosic molded articles, whereby (a) cellulose is mixed with an aqueous amine oxide solution; (b) the mixture is converted to the extrusion solution by evaporation of water in vacuo at an elevated temperature and by input of shearing energy; (c) the extrusion solution is extruded, forming the cellulosic molded article, and is coagulated in a coagulation bath, and (d) the resulting molded article is washed to remove the residual amine oxide, characterized in that in step (a) the cellulose/amine oxide ratio is kept at a predetermined level by preregulation, and the water content of the extrusion solution is kept at a predetermined level by a main regulation after leaving step (b). This method allows accurate regulation of the composition of the solution.

Abstract: An unstretched first plastic foil is laminated with a longitudinally stretched second plastic foil by the application of heat and pressure. The second foil is preheated, thereupon stretched and thereafter tempered prior to being laminated with the first foil which is heated prior to lamination. The laminating step can coincide with the tempering step and immediately follows the stretching step so that the laminating step can be carried out by utilizing heat which is required for stretching of the second foil. The material of the first foil is or can be identical with the material of the second foil; in any event, the two materials are sufficiently compatible to permit bonding of the unstretched foil to the stretched foil by the application of heat and pressure alone, i.e., without resorting to an adhesive.

Abstract: To produce flame-retardant thermostable new homopolyimides having structural units of the general formula ##STR1## by reacting 3,3',4,4'-benzophenone tetracarboxylic acid dianhydride with an overall equimolar amount of 2,4- and/or 2,6-toluene diisocyanate, the reaction is carried out in the presence of a polymerization accelerator. The new homopolyimides have a glass transition point of at least 320.degree. C. and are processible to moulded articles exhibiting a similarly good structural strength as could hitherto be observed in mixed polyimides only. Furthermore, the new homopolyimides can be spun to fibres.

Abstract: A high-temperature resistant stacking support is composed of a, preferably self-supporting, core which at least partially is surrounded by a high-temperature resistant fiber composite made of polyimide fibers of the general formula ##STR1## wherein n is an integer larger than 1 and A represents a four-valent aromatic group.The stacking support can be produced by shrinking a polyimide fiber nonwoven consisting of polyimide fibers of the general formula (I) onto the core under heat exposure.These stacking supports are particularly useful for stacking heated aluminum sections.

Abstract: Surfaces are coated by flame spraying onto the surfaces a powder mixture including a high-temperature resistant plastic and a metal, the high-temperature resistant plastic being a polyimide having a glass transition point of above 250.degree. C. and containing low-molecular emittable components in an amount of at least 1.0% by weight, preferably of between 1.0 and 10% by weight.

Abstract: A protective sleeve, particularly for human arms and legs, uses a sack-like synthetic material film with a slip-in opening. A preferably adhesive, band-shaped sealing strip is fastened at the rim of the slip-in opening over a part of its circumference and projects over the rim of the film. The strip forms a freely projecting member of such length and such surface that the ends of the sealing strip, after enclosing a body part to be covered, overlap, one adhering on the other.