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WO/2000/032636A1 |
Disclosed is a method for producing low-viscuous water-soluble cellulose ethers by oxidative degradation of higher viscuous cellulose ethers with hydrogen peroxide. The higher viscuous cellulose ether is intensely mixed with an aqueous s...
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WO/2000/031114A1 |
Human heat-shock protein-binding proteins (HspBP-1 and HspBP-2) are disclosed with the polynucleotides which identify and encode them. Genetically engineered expression vectors and host cells comprising the nucleic acid sequences encodin...
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WO/2000/027886A1 |
A process for the preparation of cross-linked polysaccharides containing carboxy groups, allowing complete control of cross-linking degree as well as high reproducibility in terms of constant characteristics of the final product. The pro...
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WO/2000/025823A1 |
The present invention relates to muco-adhesive polymers that include no more than 10 different monomers and at least one thiol group not located at an end. This invention also relates to drugs containing these polymers.
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WO/2000/015667A1 |
The invention concerns cellulose microfibrils with modified surface, characterised in that the hydroxyl functions present at the surface of the microfibrils are etherified with at least an organic compound comprising at least a function ...
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WO/2000/015272A1 |
Process for providing immobilized living cells, said process comprising the steps of: mixing together under reactive conditions a polymer and an activator for said polymer, such as a cross-linking agent, so that the polymer is activated,...
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WO/2000/008059A1 |
Processes for the production of polysaccharide ethers, e.g. cellulose ethers, are disclosed wherein salts formed during the process, e.g., sodium nitrate or sodium acetate, are converted to their corresponding acids and bases by means of...
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WO/2000/008058A1 |
The present invention relates to associative cellulose ethers with improved thickening effects, especially in paint. The improvement depends on the presence of a hydrophobic modifying group of general formula (I), where R is an aliphatic...
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WO/2000/006656A1 |
A coating composition is composed of a water soluble polysaccharide composition comprising at least one hydrophobic group selected from aryl, alkyl, alkenyl, aralkyl and mixtures thereof and at least one quaternary ammonium salt group, b...
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WO/2000/001425A1 |
Carboxymethylated cellulosic articles having degree of substitution in the range from 0.12 to 0.35 and in which the carboxymethyl groups are believed to be predominantly within the amorphous regions to the exclusion of the crystalline re...
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WO/1999/061478A1 |
The invention relates to the preparation of a cellulose ether that is hydrophobically modified with an alkyl or alkenylketene dimer the general formula of which is (I), in which R¿1? and R¿2? are alkyl or alkenyl chain, such as one hav...
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WO/1999/061479A1 |
The invention relates to a cellulose ether that is hydrophobically modified with an alkyl or alkenylketene dimer of general formula (I), in which R¿1? and R¿2? are alkyl or alkenyl chain, such as one having 5 to 22, preferably 13 to 20...
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WO/1999/054361A1 |
The invention relates to a method for activating cellulose, to a method for derivatizing activated cellulose and to the cellulose derivatives hereby obtained. According to the invention, the activation step is carried out in the presence...
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WO/1999/038892A1 |
The invention concerns a parenchyma cellulose at least partially microfibrillated, consisting of cellulose I, characterised in that it is substituted with carboxyalkyl groups in acid form or in the form of carboxylate with degree of subs...
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WO/1999/032521A1 |
Disclosed are silicone polymers comprising: a) formulae (Ia), wherein [A]¿m? and [B]¿n?, individually, is a non-reacting polymeric substituent wherein m + n is an integer of 1 to about 100,000, where one of m or n can be 0; and at leas...
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WO/1999/026982A1 |
The invention relates to aqueous non-ionic cellulose ethers from the group of alkyl celluloses and hydroxyalkyl celluloses. The cellulose ethers are additionally substituted with butenyl groups. The invention also relates to their use as...
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WO/1999/020657A2 |
The invention relates to a method for producing an essentially fibre-free carboxy methyl cellulose with predominantly elastic properties. The invention also relates to the use thereof as super absorbent material and as an auxiliary agent...
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WO/1999/018132A1 |
The invention relates to a method for producing water-soluble, solubility-retarded polysaccharide derivatives and a water-soluble, solubility-retarded polysaccharide derivative without the addition of alkali. According to the invention, ...
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WO/1999/014245A1 |
Compositions and methods that utilize certain cellulosic based polymer or oligomer materials as fabric treatment agents which can impart fabric appearance and integrity benefits to fabrics and textiles laundered in washing solutions cont...
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WO/1999/010383A1 |
The invention relates to polysaccharide derivatives containing a) at least one hydrophobic agent and b) at least one substituent containing nitrogen. The derivative is especially a cellulose ether which, contains as a substituent, a) a t...
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WO/1999/009088A2 |
The invention relates to water-soluble polymeric thiosulfates, a method for the production thereof by polymer-analog addition of tetrathionate to the unsaturated polymers and to their use in surface coating.
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WO/1999/005178A1 |
The invention relates to water-soluble biodegradable hydroxyalkyl cellulose-2-hydroxycarboxylic acid esters with a molecular degree of substitution of the hydroxyalkyl group of less than 1.5 (MS¿hydroxyalkyl?$m(f)1.5) and a molecular de...
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WO/1999/003891A1 |
The invention relates to novel cellulose ethers with a specific substitution pattern. The cellulose ethers are predominantly substituted in the C3 position of the anhydroglucose unit of the cellulose.
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WO/1999/002568A1 |
According to the invention, samples of highly crystalline ($m(g)80 %) technical cellulose with a degree of polymerisation of approximately 1500 were enzymatically pre-treated with commercial endoglucansases under various conditions befor...
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WO/1998/058940A1 |
Reaction at the interface of an organic solution containing an acidic reactant and an aqueous alkaline solution containing nonreducing carbohydrates such as sucrose, sugar alcohols, cyclodextrines, and polysaccharides imparts a specifici...
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WO/1998/058688A1 |
A method of production of a highly absorbent, polysaccharide-based absorption material, wherein an aqueous solution containing a starting material in the form of a cross-linkable polysaccharide-based polymer is subjected to cross-linking...
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WO/1998/058686A1 |
A method of production of a highly absorbent, polysaccharide-based absorption material, wherein an aqueous solution containing a starting material in the form of a cross-linkable polysaccharide-based polymer is subjected to cross-linking...
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WO/1998/058011A1 |
The present invention relates to improved methods for making and using bioadhesive, bioresorbable, antiadhesion compositions made of intermacromolecular complexes of carboxyl-containing polysaccharides and polyethers, and to the resultin...
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WO/1998/056825A1 |
The invention relates to a hydrophobically modified anionic cellulose ether obtainable by a process comprising reacting an alkali metal cellulose with at least three alkylating reagents A, B, and C. Reagent A is selected from the group o...
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WO/1998/054396A1 |
Method for treating fibrous cellulosic materials using an aqueous cationic treating solution containing a cyclic polyhydroxy compound and choline chloride, by which dye uptake of the material, and the environmental effects of the subsequ...
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WO/1998/050200A1 |
Polishing with an abrasive comprising abrasive particles composed mainly of silica particles, water as a solvent, and water-soluble cellulose and having an alkali metal impurity content of not more than 5C ppm wherein C represents the co...
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WO/1998/049201A1 |
Galactosylated hydroxyalkyl polysaccharides wherein galactose moieties are bound to the hydroxyalkyl polysaccharide by galactosidic bonds, and a process for preparing the galactosylated hydroxyalkyl polysaccharides having the steps: a) p...
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WO/1998/049200A1 |
The invention concerns reactive cellulose, i.e. having in particular a very low degree of crystallinity obtainable with a high degree of purity. Said novel reactive cellulose is particularly used as raw material for making cellulose ethe...
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WO/1998/038328A1 |
Pulp is treated with a hemicellulase, e.g. a xylanase such as that derived from $i(Bacillus sp.) SD902, prior to being chemically modified. This results in excellent cellulose derivatives that could not be otbained by any conventional me...
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WO/1998/031710A1 |
The invention concerns a novel, particularly economical, process for preparing powdery polysaccharide derivatives, in particular cellulose derivatives with a thermal flocculation point. The process includes the swelling or dissolution of...
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WO/1998/029501A1 |
The present invention is directed to a method of producing methylated hydroxypropylcellulose (m-HPC). By controlling the degree of methylation, one can manipulate the lower critical solution temperature (LCST) of the m-HPC polymer to bel...
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WO/1998/028360A1 |
A cellulose sponge is disclosed, which is formed from coagulated cellulose solution having a mean degree of polymerisation (DP) which does not exceed 800. Preferably, the DP lies in the range 450-600. The sponge may be reinforced by disc...
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WO/1998/023647A1 |
Polysaccharide derivatives in which some or all of the hydroxyl groups have been substituted by hydrophobic substituent(s) (A) having as the partial structure a C�8-43? hydrocarbon group, and ionic hydrophilic substituent(s) (B) having...
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WO/1998/021246A1 |
Disclosed is a method for producing cellulose derivatives wherein cellulose is impregnated with an alkali solution, the impregnated cellulose is selectably pressed out, and the cellulose undergoes a substitution or addition reaction, whe...
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WO/1998/019534A1 |
The invention concerns thermoplastically processable active substances consisting of associates of polyelectrolytes which are produced by salt formation with amphiphilic low-molecular oppositely charged counter-ions. The invention furthe...
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WO/1998/013389A1 |
A polysaccharide derivative wherein a part or the whole of the hydrogen atoms of the hydroxyl groups of a polysaccharide or a derivative thereof are substituted by all of a group (A): -X-R?1�, a group (B): -X-R?2�, and a group (C): -...
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WO/1998/000446A1 |
The invention provides oligosaccharides having molecular weights in the range 1000 to 50,000 and obtained by partial hydrolysis of oxidized polysaccharides such as oxidized regenerated cellulose (ORC). The oligosaccharides are useful as ...
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WO/1997/034852A1 |
The invention concerns cycloalkyl derivatives of formula (I), where n is 0 to 4 and the other variables have the meaning given in claim 1. It also concerns a method for producing said derivatives and their use for producing compounds of ...
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WO/1997/031950A1 |
Carboxymethyl cellulose ethers having, as substituents, groups having the formula (I): R-(A)m-(B)n-, wherein: R = linear or branched C1-C30 alkyl or alkenyl group, A = O-CpH2p oxyalkylene group, linear or branched with p = 2-4, B = -CH(O...
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WO/1997/022627A1 |
An improved process for surface treating water-soluble cellulosic polymers with cross-linking agents to provide products which are more readily dispersible in cold water, and have longer viscosity delay times than can be achieved with po...
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WO/1997/016595A1 |
The invention relates to paper and similar products made with at least a portion of the papermaking furnish being essentially water insoluble carboxyethyl cellulose fibers. A cationic additive material, such as a polyamide epichlorohydri...
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WO/1996/040168A2 |
Hydroxyethyl starch (HES) and use thereof in methods are provided for reducing or preventing adhesion formation between tissue surfaces, e.g., organ surfaces, in body cavities following surgical procedures and for drug delivery. HES may ...
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WO/1996/038484A1 |
The invention relates to oxidized polymeric carbohydrate ethers or mixtures thereof with a degree of polymerization of at least 10. These compounds possess an excellent sequestering and anticrustation activity and are therefore used with...
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WO/1996/026220A1 |
Cellulose particles that have cationic groups also on the inside.
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WO/1996/015154A1 |
The invention relates to a cationic polysaccharide, preferably in fibrous form, having superabsorbent characteristics, the polysaccharides being substituted by quaternary ammonium groups and having a ds of at least 0.5, preferably 0.5 to...
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