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Matches 201 - 250 out of 945

Document Document Title
WO/2002/018448
The present invention relates to percarboxylated polysaccharide selected from the group consisting of gellan, carboxymethylcellulose, pectic acid, pectin and hyaluronic acid derivatives; the process for their preparation and their use in...  
WO/2002/006373
The present invention provides improved hydrogel films useful for therapeutic treatments. The invention also provides materials and methods for modification and polymerization of polysaccharides into hydrogel films, which swell after exp...  
WO/2002/006348
A method for reducing the molecular weight of polymer comprises subjecting a solid phase polymer to a dose of gamma irradiation sufficient to permit the desired molecular weight reduction to occur.  
WO/2001/087984
The invention relates to modified cellulose ethers, obtainable by reaction of cellulose ethers carrying free hydroxy groups with organic, di- and/or polyfunctional carboxylic acids that have been activated by reacting them with nitrogeno...  
WO/2001/087365
Disclosed are novel polysaccharide absorbents and method for providing a water-swellable, water-insoluble modified polysaccharide having preferred age-stable absorption properties. The novel polysaccharide absorbents and method provide a...  
WO/2001/085800
Product of esterified polysaccharides and the process of making such product. The process can be enzymatic where an enzyme is used as a catalyst for the reaction. The process can also be chemical where no enzyme is used. Novel products a...  
WO/2001/077183
The invention relates to a method for the production of at least alkylated, non-ionic cellulose ethers, whereby at least 10 % of all hydroxy groups contained therein are alkylated and which may flocculate in water, within a temperature r...  
WO/2001/068713
A superabsorbent polysaccharide can be obtained by crosslinking a polysaccharide or derivative thereof with at least 1 % by weight of a flexible spacer having a chain length of at least 9 chain atoms and having terminal activated couplin...  
WO/2001/066600
A derivatized microfibrillar cellulose, derivatized to contain a substituent that provides cationic charge. A method for producing a derivatized microfibrillar cellulose to include a substituent that provides cationic charge, which may i...  
WO/2001/060868
Single phase gels for preventing the formation of surgical adhesions are disclosed. The gels are prepared by reacting an aqueous solution of a polyanionic polysaccharide, such as hyaluronic acid or carboxymethyl cellulose, with divinyl s...  
WO/2001/055220
A condensation product of chitosan is formed by its reaction with a bisulfite addition compound HOCRR'SO¿3?A wherein: each of R and R' independently represents a hydrogen atom, or R represents a hydrogen atom and R' represents an option...  
WO/2001/051003
The invention provides novel methods for treating disease based on the medicinal use of lipids and phospholipids covalently bound to physiologically acceptable monomers or polymers. Phosphatidylethanolamine moieties conjugated to physiol...  
WO/2001/051063
Inhibitors against the absorption of sodium ion containing as the active ingredient metal salts (excluding sodium salt) of cellulose derivatives of the general formula (I): R-O-A, which effectively inhibit excess common salt existing in ...  
WO/2001/048021
Highly charged cationically modified cellulose ethers having cationic substitution levels of at least about 3.0 wt.% are disclosed. The cationically modified cellulose ethers are useful, for example, in personal care formulations, e.g., ...  
WO/2001/046265
A water insoluble, biocompatible gel is prepared by reacting carboxymethylcellulose and a carbodiimide, wherein the reaction is conducted in an aqueous medium containing a water miscible organic solvent, such as a lower alkanol, an alkyl...  
WO/2001/018062
The invention relates to low-viscous cellulose ethers that flocculate in hot water and that have a high degree of purity and whiteness. The invention also relates to a method of producing the same by acidic-catalyzed hydrolytic depolymer...  
WO/2001/009254
The invention relates to the use of sulfoalkyl-modified cellulose ethers, which are optionally substituted by hydroxyalkyl groups, as non-associatively active thickeners for aqueous coating systems such as dispersion paints, silicone res...  
WO/2001/000680
Disclosed is a process for making a low molecular weight cellulose ether. The process has the following steps: a) providing a high molecular weight cellulose ether of a viscosity of about 200 centipoise or more in a two percent aqueous s...  
WO/2000/073351
A polysaccharide derivative having a structure formed by replacing part or all of the hydrogen atoms of the hydroxyl groups in a polysaccharide or a derivative thereof with a group represented by the formula (1) -E?1¿-(OA)¿n?-E?2¿-R (...  
WO/2000/071586
Cellulose derivatives are formed by first crosslinking cellulose and subsequently reacting the crosslinked cellulose with a reagent capable of forming a cellulose ether or ester. Many crosslinking agents are suitable but those forming et...  
WO/2000/066090
The invention relates to the delivery of drug, peptide and protein pharmaceuticals using the folate-mediated uptake system. More particularly the invention relates to the amplification of drug/pharmaceutical delivery with the folate upta...  
WO/2000/066091
The invention relates to the delivery of drug, peptide and protein pharmaceuticals using the folate-mediated uptake system. More particularly the invention relates to the amplification of drug/pharmaceutical delivery with the folate upta...  
WO/2000/065145
The present invention provides a method of preparing cellulose ethers comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) converting the mercerized and recovered cellulose pulp into the cellulose ethers...  
WO/2000/063254
Disclosed is a cellulose ether composition having a low molecular weight cellulose ether of a viscosity of about 200 mPas or less in a two percent aqueous solution at 20°C. The composition has a sodium chloride content of about 0.3 weig...  
WO/2000/059947
In a first embodiment, the present invention is a process for producing methylcelluloses having greater gel strength than methylcelluloses of the prior art. According to the process of the present invention, methylcellulose is produced b...  
WO/2000/052059
The present invention provides a hydrophobically modified cellulose derivative selected from the group consisting of a hydrophobically modified hydroxyethyl cellulose, a hydrophobically modified methylhydroxyethyl cellulose and a hydroph...  
WO/2000/050463
A process for oxidising cellulose, in which a nitroxyl compound such as TEMPO is oxidised using an oxidising agent in the presence of a complex of a transition metal such as Mn, Fe, Cu, and a complexing agent such as a polyamine, or an o...  
WO/2000/047628
A method for producing derivatized microfibrillar polysaccharide, including but not limited to cellulose, derivatized by steric and/or electrostatic forces, where the electrostatic forces are provided by anionic charge or by a combinatio...  
WO/2000/047701
In one aspect, the invention provides methods for separating a corn fiber lipid fraction from corn fiber and novel corn fiber oils prepared therefrom. In another aspect, the invention provides methods of obtaining derivatizable cellulose...  
WO/2000/045804
A method for the prevention or reduction in the severity of abscess formation in a human subject involves the use of a dilute solution of a polyanionic polysaccharide, preferably a solution of hyaluronic acid or carboxymethyl cellulose, ...  
WO/2000/040618
A graft polymer comprises a carbohydrate polymer having pendant 3-amino-2-hydroxy propyl groups grafted thereon and may be employed as a retention aid and strengthening additive in paper manufacture. When the carbohydrate polymer is a co...  
WO/2000/039390
Disclosed is a method for producing kraft wood fiber having an alpha-cellulose content greater than 97 % and a viscosity greater than 40 centipoise. The method involves prehydrolyzing hardwood chips with water, kraft cooking, bleaching a...  
WO/2000/035957
The invention relates to an anionic cellulose ether obtainable by a process comprising reacting an alkali metal cellulose with one or more reagents A selected from the group consisting of haloacetic acids, alkali metal haloacetates, alka...  
WO/2000/032637
There is a process for making a cellulose ether. The process comprises the following: a) alkalyzing a cellulose pulp; b) etherifying the alkalyzed cellulose pulp to form a cellulose ether; c) washing the cellulose ether; d) drying the ce...  
WO/2000/032636
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...  
WO/2000/031114
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...  
WO/2000/027886
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...  
WO/2000/025823
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.  
WO/2000/015667
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 ...  
WO/2000/015272
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,...  
WO/2000/008059
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...  
WO/2000/008058
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...  
WO/2000/006656
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...  
WO/2000/001425
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...  
WO/1999/061479
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...  
WO/1999/061478
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...  
WO/1999/054361
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...  
WO/1999/038892
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...  
WO/1999/026982
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...  
WO/1999/020657
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...  

Matches 201 - 250 out of 945