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WO/1997/030090A1 |
The invention pertains to a process for preparing a material having a high water and salt solutions absorbency, said material containing mainly cellulose, in which process cellulose is dissolved in a solvent containing phosphoric acid, a...
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WO/1997/028298A1 |
The invention pertains to a process for preparing a spinnable, isotropic solution containing 94-100 wt.% of the constituents cellulose, phosphoric acid and/or its anhydrides, and water, which solution is obtained by dissolving cellulose ...
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WO/1997/025463A1 |
The present invention relates to a method of producing polysaccharide fibres (8), wherein the polysaccharide is dissolved and the solution is sprayed into a bath (7) which contains a water-miscible organic solvent and a cross-linker. The...
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WO/1997/025462A1 |
The invention relates to a process for producing flexible cellulose fibres by spinning solutions of the cellulose through spinnerets over an air layer in an amine oxide-containing aqueous and/or alcoholic regenerating bath followed by dr...
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WO/1997/024476A1 |
The invention concerns a method of producing cellulose fibres, the method calling for a warm solution of cellulose in a tertiary-amine oxide to be spun into filaments which are passed across an air gap and then brought into contact with ...
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WO/1997/023667A1 |
The shape of elongate lyocell members such as fibres can be modified by applying a transverse deforming force to the member while it is in plasticised never-dried state. Possible modifications of this kind include the induction of crimp ...
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WO/1997/023666A1 |
The invention relates to a process for producing cellulose moulded articles of high brightness, the process being characterised by the following combination of measures: pulp is bleached with a bleaching agent which must not contain chlo...
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WO/1997/023668A1 |
An aqueous solution of an alkali metal hydroxide, preferably sodium hydroxide, containing from 0.2 to 3.85 percent by weight hydroxide ions is applied to a never-dried cellulosic article, for example fibre or film, being produced by the ...
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WO/1997/023669A1 |
A method is disclosed of reducing fibrillation tendency by providing a skin/core structure to a lyocell filament spun from a solution of cellulose in an amine oxide solvent. Such structure is achieved by passing the filament through a re...
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WO/1997/022739A1 |
A laminar flow process for preparing cellulose diacetate fibers is disclosed. In the process, a precipitation-acid stream and acid-dope stream are contacted in a zone having substantially laminar flow. The acid-dope stream is annularly d...
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WO/1997/019207A1 |
Process for the preparation of regenerated cellulose filaments from an anisotropic solution comprising cellulose formate, phosphoric acid, and formic acid in which the formed cellulose formate filaments are dried to a moisture content of...
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WO/1997/016586A1 |
A powdered resin of high absorption power (SAP) has heretofore been used as a water retentive material for sanitary products, such as sanitary napkin, a paper diaper and an incontinence pad. This water retentive material is used by being...
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WO/1997/014829A1 |
The invention relates to a process for producing cellulose fibres comprising the steps (A) dissolving a cellulose-containing material in an aqueous tertiary amine oxide to obtain a spinnable cellulose solution; (B) spinning the cellulose...
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WO/1997/013893A1 |
The invention concerns a method of producing a cellulose product by the amine oxide process, a suspension of cellulose in an aqueous tertiary-amine oxide being converted into a cellulose solution and the cellulose solution shaped and pas...
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WO/1997/011973A1 |
The invention relates to a thin-film treatment device with a cylindrical treatment vessel and a rotor fitted centrally therein and having agitators which are movable and are inclined at an angle 'alpha' to the rotor axis, in which the ro...
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WO/1997/012083A1 |
The invention concerns a process for transporting a cellulose solution in an aqueous tertiary amine oxide through a component, the cellulose solution flowing in the component at a variable speed. The process is characterized in that, at ...
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WO/1997/011213A1 |
The invention concerns a method of manufacturing a cellulose product, in particular cellulose fibres, a cellulose-containing material being placed in an aqueous solution of a tertiary-amine oyide and brought into suspension, and water be...
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WO/1997/010894A1 |
A method of forming a solution of a solid includes the steps of: (1) forming a dispersion which comprises (a) a liquid, (b) the solid dispersed in powder form and (c) a polymeric binder dissolved in the liquid, and (2) mixing the dispers...
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WO/1997/008370A1 |
Cellulose multifilament yarns comprising multifilament yarns of Lyocell fibers, which have a dry breaking tenacity of 2.8-4.0 g/d and a dry breaking elongation of 13-20 % and whose tenacity-elongation curves pass the region of the tenaci...
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WO/1997/007268A1 |
A process is disclosed for purifying a tertiary aminoxide aqueous solution that contains impurities that are in part dissolved and in part available in a non-dissolved, colloidal form. The process is characterised by the combination of t...
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WO/1997/007137A1 |
The invention relates to a process for producing an aqueous amine oxide solution used in the amine oxide process for producing a mouldable cellulose solution, in which aqueous amine oxide-containing solutions occurring in the amine oxide...
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WO/1997/007266A1 |
A process is disclosed for producing a cellulose shaped body by the aminoxide process. A suspension of cellulose in an aqueous tertiary aminoxide is transformed into a spinnable solution, is extruded through a spinneret and the thus obta...
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WO/1997/007138A1 |
The invention relates to a process for producing a solution of N-methyl morpholine-N-oxide in water, in which (a) an aqueous solution is used which contains N-methyl morpholine and morpholine and has a pH between 6.0 and 9.0, whereafter ...
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WO/1997/007267A1 |
The invention relates to a process for producing cellulose fibres by the amine oxide process in which a solution of cellulose is spun in an aqueous tertiary amine oxide into fibres and the fibres are brought into contact with a cross-lin...
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WO/1997/007059A1 |
The invention concerns a method of destroying N-nitrosomorpholine in an aqueous solution containing N-nitrosomorpholine and a peroxide oxidizing agent, the method being characterized in that the aqueous solution is irradiated with ultrav...
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WO/1997/006294A1 |
Cellulose formate fibre and a cellulose fibre regenerated from cellulose formate are disclosed. The fibres have high toughness and modulus properties combined with improved elongation at break and energy at break. Specifically, their elo...
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WO/1997/005305A1 |
The invention relates to a process for transporting a thermally unstable viscous compound through pipes, in which: (a) the compound is divided during transport into X1 partial streams T1, where X1 is calculated by the relation (I) X1 = Q...
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WO/1997/005329A1 |
A composition of paper comprising 99 to 10 weight percent cellulose fibers and 1 to 90 weight percent cored cellulose fibers that are uniformly dispersed within the paper. The cored cellulose fibers are composed of a cellulose sheath tha...
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WO/1997/004148A1 |
The invention relates to a process for producing modified viscose fibres by mixing a solution of cellulose carbamate with one of cellulose xanthate, spinning the resultant mixed solution and precipitating the solution in one or more prec...
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WO/1997/002292A1 |
A method for preparing a cellulose formate solution from cellulose slabs, particularly high-density slabs, without mechanically destroying said slabs in advance, is disclosed. The slabs are directly dissolved by impregnating the whole sl...
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WO/1997/002315A1 |
The invention concerns regenerated celluloses which are made flame-retardant and contain at least one compound of formula (I). The invention also pertains to the use of compounds of formula I as flame retardants specifically for regenera...
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WO/1997/001660A1 |
The present invention relates to a process for the preparation of a mixture of cellulosic fibers and microfibers. Said process comprises the preparation of a cellulosic solution (C); the extrusion of said solution (C) through the hole or...
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WO/1996/041911A1 |
A flameproof woven or knitted fabric to which deodorant function is imparted without impairing the flameproofness. Such a fabric is produced by applying a deodorant composition comprising an aluminosilicate comprising 5 to 80 mole % of S...
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WO/1996/038625A1 |
The invention relates to a process for crushing a cellulose material in which crushing takes place in at least two stages, where (1) the cellulose material is precrushed, whereby particles of various sizes are formed, (2) the particles p...
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WO/1996/037643A1 |
A process for producing coloured regenerated cellulose fibres is characterised in that a composition of a cationic polysaccharide and of an anionic dye is added to a viscose mass, alkaline cellulose or cellulose solution before spinning ...
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WO/1996/037641A1 |
Sulphonated regenerated cellulose fibres are produced by adding a modifier to a viscose mass or to an alkaline cellulose or cellulose solution and by spinning it into fibres. The modifier is starch etherified with C2-C5 alkyl sulphonic a...
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WO/1996/037642A1 |
Aminated regenerated cellulose fibres are produced by adding to a viscose mass, alkaline cellulose or cellulose solution one or several starches with a substitution degree from 0.1 to 3 etherified with C2-C5 alkylamines that may be furth...
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WO/1996/035008A1 |
The invention relates to a process for monitoring a flowing suspension of powdered cellulose in a liquid, aqueous tertiary amine oxide and features the combination of steps: (A) the suspension is inserted into a container with an inlet a...
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WO/1996/035010A1 |
A cellulose acetate fiber having excellent gloss and hand and comprising a mixture consisting essentially of (a): 100 parts by weight of cellulose acetate with (b) 5 to 40 parts by weight of a polymer material capable of plasticizing the...
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WO/1996/033934A1 |
The invention concerns a device for holding and discharging homogeneous suspensions of comminuted cellulose in a liquid, aqueous tertiary amine oxide, the device comprising: a cylindrical, substantially horizontally mounted mixing vessel...
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WO/1996/033302A1 |
The invention concerns an integrated cellulose foil and fibre manufacturing works according to the amine oxide process. The works substantially comprise a cellulose production plant, a mixer (B, B') for producing a low-consistency cellul...
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WO/1996/033221A1 |
A process is disclosed for producing a cellulose suspension in a liquid, aqueous tertiary amine oxide by mixing crushed cellulose with liquid, aqueous tertiary amine oxide. The process is characterised in that (A) crushed cellulose is co...
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WO/1996/030410A1 |
Described is a method of producing solutions of cellulose in water-containing tertiary-amine-N-oxides by preparing a mixture containing cellulose, water and tertiary-amine-N-oxides and subsequently reducing the water content of the mixtu...
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WO/1996/030411A1 |
The invention concerns a process for activating polysaccharides, wherein the polysaccharide starting material is brought into contact with liquid ammonia at an initial pressure which is higher than atmospheric pressure and at a temperatu...
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WO/1996/030566A1 |
The invention concerns a method of producing cellulose fibres by extruding a spinning solution containing dissolved cellulose in a gaseous medium over a predetermined gas section, subsequent immersion in and passage through a coagulation...
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WO/1996/027638A1 |
A composition contains fine solid particles provided with a coating or dispersed in a matrix. The particles are inert in relation to the coating or matrix. The coating or matrix consist of a homogeneous mixture of cellulose, tertiary ami...
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WO/1996/027035A1 |
The invention concerns a process for manufacturing cellulose moulded bodies in which a suspension of cellulose in an aqueous solution of a tertiary amine oxide is converted to a mouldable solution which is extruded using a shaping tool a...
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WO/1996/026220A1 |
Cellulose particles that have cationic groups also on the inside.
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WO/1996/021758A1 |
A method of manufacturing extruded articles of lyocell is described wherein a solution of cellulose in a tertiary amine N-oxide is extruded by way of a die (2) through an air-gap (3) into a coagulating bath (5), air being supplied to and...
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WO/1996/021678A1 |
A method is described for forming a solution of cellulose in a tertiary amine oxide (such as N-methylmorpholine N-oxide) and a non-solvent for cellulose (such as water). The method involves the preparation of a mixture containing excess ...
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