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Patent Searching and Data


Matches 651 - 700 out of 3,224

Document Document Title
WO/2000/022208A1
Methods of making polymeric fibers are provided and include spinning a solution containing at least one polymer, a modified pigment having attached at least one organic group, and a solvent. The polarity of the solvent and the polarity o...  
WO/2000/018991A1
The invention relates to a method for producing cellulosic fibers from solutions of the cellulose in an aqueous tertiary amine oxide. The extruded fibers are guided through a spinning bath and are then cut. The cut fibers are guided thro...  
WO/2000/017425A1
The invention relates to a method for producing cellulosic forms, especially fibres and filaments, by a) dissolving cellulose in an aqueous solution of a tertiary amine oxide, especially N-methylmorpholine-N-oxide, and b) extruding the c...  
WO/2000/017424A1
The invention relates to a method for producing cellulosic forms, such as fibres, filaments, films, membranes or tubes by a) extruding a solution of cellulose in a hydrous amine oxide, especially N-methylmorpholine-N-oxide, through a mou...  
WO/2000/015887A1
The invention relates to a method for preparing or purifying aqueous solutions of a tertiary amino oxide, especially process waters resulting from the production of cellulose shaped bodies, e.g. used precipitation baths, comprising separ...  
WO/2000/015692A1
A cellulosic ester has associated with the ester at least one near infrared fluorophore. A method for incorporating the near infrared fluorophore into the cellulosic ester is also provided. In the method, the near infrared fluorophore is...  
WO/2000/012790A1
The process of preparing the regenerated cellulose fiber according to the present invention comprises providing Na-cellulose by treating natural cellulose with an NaOH aqueous solution, aging the Na-cellulose by exposing to air, removing...  
WO/2000/009247A1
A cellulose acetate semipermeable membrane which exhibits a high filtration velocity, has a high mechanical strength and is unsusceptible to degradation by a microorganism, characterized in that it comprises a cellulose acetate having an...  
WO/2000/009563A1
A method for continuous production of a cellulose suspension in hydrous N-methylmorpholine-N-oxide, characterized in that (a) the cellulose is conveyed through a first shear area in the presence of N-methylmorpholine-N-oxide and is homog...  
WO/2000/006814A1
The invention relates to a method for producing a spunbonded nonwoven containing solvent-spun cellulosic fibres. Said method is characterized in that a cellulose solution in an aqueous tertiary amino-oxide is extruded through a nozzle (1...  
WO/1999/066110A1
The invention relates to a method for producing cellulose fibers during which a solution of cellulose is extruded in an aqueous tertiary amino oxide by a spinning device comprising a spinning nozzle. The invention is characterized in tha...  
WO/1999/064649A1
A method of manufacture of a nonwoven cellulose fabric involves the fibres being formed by extruding a solution of cellulose through at least one spinning jet and subjecting the extrudate fibre to a high velocity gas flow. The fibre pass...  
WO/1999/063136A1
The invention relates to a method for producing cellulosic shaped bodies, especially flat or tubular films and cellulosic membranes in the form of flat or tubular films. According to said method, a solution of cellulose in an aqueous ter...  
WO/1999/060026A1
Solutions are disclosed which comprise (a) cellulose, (b) a tertiary amine N-oxide solvent for the cellulose, (c) a solution processability-enhancing amount of at least one co-solvent, miscible with the tertiary amine N-oxide, which is a...  
WO/1999/055164A1
The invention relates to a method for producing coloured, tubular sleeves for food made of a non-woven material coated with regenerated cellulose. The invention is characterized in that an alkaline dye bath is added to the viscose soluti...  
WO/1999/049110A1
The invention relates to a spinneret for producing fibres, especially cellulose fibres, using the amine oxide process. Said spinneret comprises an essentially rotationally symmetrical nozzle body (1), a feed (18) for the material to be s...  
WO/1999/047733A1
The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization (D.P.). Further, the present...  
WO/1999/046434A1
The invention relates to a method for producing cellulosic moulded bodies, especially fibres, from solutions of cellulose in an aqueous, tertiary amine oxide by preparing the solution from a cellulose suspension in aqueous, tertiary amin...  
WO1999009250A9
Sheet material having a high specific surface area necessitated for increasing the rate of removing nicotinic and tarry components from air filter materials, particularly cigaret filter material, and a sheet strength sufficient for endur...  
WO/1999/037836A1
The invention relates to luminescent fibres consisting of at least one fibre-forming material in which at least one inorganic luminescent pigment is distributed. The inorganic luminescent pigment has a mean particle size of between 1 and...  
WO/1999/036604A1
Cellulosic fibrids can be made by mixing together under turbulent conditions viscose and a coagulating and regenerating liquor containing preformed fibrids to form a suspension of fibrids in a spent liquor, and collecting the fibrids fro...  
WO/1999/036603A1
Cellulosic fibrids can be made by mixing together under turbulent conditions viscose and a coagulating and regenerating liquor so as to form a suspension of soft macroscopic cellulosic particles in a spent liquor, collecting the particle...  
WO/1999/036601A1
The invention relates to textile products obtained by spinning a solution on a polymer basis and to products obtained by spinning said products, characterized in that they consist of a polymeric material the mass of which contains an eff...  
WO/1999/036602A1
Cationic cellulose particles useful in papermaking comprise from grater than 10 up to 50 percent by weight on cellulose of a polymeric amine of weight-average molecular weight in the range from 100,000 to 1,000,000 comprising monomeric u...  
WO/1999/034041A1
A nonwoven web and method of preparing a novel nonwoven web of superabsorbent fiber are disclosed. An aqueous solution of superabsorbent precursor polymer is extruded under defined conditions through a plurality of die orifices to form a...  
WO/1999/029938A1
The present invention relates to a method of reducing the clogging of nozzles and slits and diminishing the formation of deposits in the spin bath system in the process of making viscose filamentary and film materials by using an alkoxyl...  
WO/1999/029937A1
The invention relates to a method for producing cellulose fibers according to the viscose method, whereby reaction products of the nucleophilic ring opening of epoxides are added as modifiers. Said epoxides are comprised of formula (I) i...  
WO/1999/022051A1
The invention concerns a method for making regenerated cellulose yarn, which consists in spinning a solution derived from cellulose, or said cellulose derivative in molten state trough at least one extrusion die, then in regenerating the...  
WO/1999/015565A1
In the manufacture of viscose, and an elongate cellulose member such as standard viscose rayon fibre, with reduced alkali ratio from dissolving-grade cellulose such as wood pulp by irradiation with a high energy beam at a dose of 1-30 kG...  
WO/1999/007926A2
The invention relates to a method for producing a cellulose fibre having an extremely large surface area from hydrocellulose, which fibre is suitable for producing a tissue characterized by high absorbency, high liquid-holding capacity, ...  
WO/1999/004070A1
The present invention relates to a method of reducing the clogging of nozzles and slits and diminishing the formation of deposits in the spin bath system in the process of making viscose filamentary and film materials by using an amphote...  
WO/1999/004071A1
The invention relates to cellulose acetate filaments with trilobal cross section and with a degree of substitution of approximately 2.1 to 3.0. They have a filament titer of less than 3.3 dtex, a PE form factor of less than 0.320, and a ...  
WO/1999/000185A1
The invention relates to a device for draining or storing viscous materials which are, for example, removed from a process as a result of exothermic events. According to the invention, said device comprises at least one unit (1, 2, 3, 4)...  
WO/1998/059100A1
The invention concerns a method for preparing cellulose microfilaments, consisting in: preparing a cellulose solution (C); extruding the latter through the hole(s) of a die (1); said die (1) hole(s) having such diameter that in the absen...  
WO/1998/058102A1
The invention relates to a method for producing cellulose fibres. Cellulose is dissolved in an aqueous tertiary amino oxide giving a spinnable solution. This solution is spun into filaments using a spinneret, and the filaments are drawn ...  
WO/1998/058103A1
The invention relates to a method for producing cellulose fibres of the lyocell type by processing a spinnable solution of cellulose in an aqueous tertiary amino oxide, by the dry/wet spinning method. The inventive method is characterize...  
WO/1998/058104A1
A cellulose fiber containing 1 to 40 % by weight of fine particles of a polymer having 20 to 95 % by weight of repeating units having an aromatic ring, the polymer being prepared from a compound having an aromatic ring or a carbon atom a...  
WO/1998/058015A1
A composition suitable for adding to a mouldable solution of cellulose in an aqueous tertiary amine oxide consists of solid particles; a mixture of a tertiary amine oxide and water, in which the solid particles are dispersed; and at leas...  
WO/1998/055673A1
The invention relates to a regenerated cellulosic moulded body obtained using the viscose method, especially viscose fibres with a basic structure consisting of regenerated cellulose. The inventive moulded bodies are characterised in tha...  
WO/1998/051709A1
An aqueous cellulose solution containing chitosan and/or chitosan derivatives, or alternatively alginic acid and/or alginic acid derivatives, and water-soluble and antibacterial rayon fiber produced from the cellulose solution. The aqueo...  
WO/1998/047924A1
The present invention relates to a method of producing a viscose solution by a) irradiating an $g(a)-cellulose with ionizing particles, b) mercerizing the irradiated $g(a)-cellulose with alkali, c) xanthaling the irradiated mercerized $g...  
WO/1998/046814A1
Lyocell fibres contain elongated domains of polyester, polyamide or an olefin copolymer, the domains having an aspect ratio at least 1.5 and being aligned substantially parallel to the axis of the fibre. A process for the preparation of ...  
WO/1998/042902A2
This invention concerns a net-like, flat material out of a polymer which has threads joined to each other via connecting points formed by loops; the threads are at least partly fused at the connecting points, and the invention is charact...  
WO/1998/034719A1
A hollow fiber membrane which is excellent in material separation performance and performance of removing high molecular materials in blood, represented by $g(b)�2? microglobulin (molecular weight of 11,800 dalton) to suppress invasion...  
WO/1998/035078A1
The invention concerns cellulose formate fibre of liquid crystal origin with high breaking elongation and having the following features: a) under optical polarising microscope, its filaments have a ribbon structure characteristic of its ...  
WO/1998/030740A1
The invention pertains to a process for preparing low-fibrillate cellulose fibres from a solution containing cellulose and/or cellulose derivatives in which the solution is spun using a centrifugal spinning machine and the formed fibres ...  
WO/1998/030741A1
The invention pertains to a process for preparing fibres from an optically anisotropic solution containing cellulose and/or cellulose derivatives by extruding the solution through a non-corroding spinneret and coagulating the resulting e...  
WO/1998/028470A1
A process for spinning a fully water washed fluorinated olefinic polymer intermediate fiber structure from a mixture of an aqueous dispersion of particles of the fluorinated olefinic polymer and a solution of a cellulosic ether.  
WO/1998/026122A1
A method of manufacture of a nonwoven cellulose fabric is disclosed. The fabric is made from fibres formed by extrusion of a solution of cellulose through a spinning jet. The extruded fibre is attenuated with a high velocity gas flow, an...  
WO/1998/022642A1
High-quality regenerated cellulosic fibers reduced in fibrillation, which is believed to be a drawback of solvent-spun regenerated cellulosic fibers, and improved in dyeability and hand is produced from a dope which is obtained by dissol...  

Matches 651 - 700 out of 3,224