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| Number | Title | Issue Date |
| 7319146 | Nonionic cellulose ether and its use The present invention relates to a nonionic methyl ethyl hydroxyethyl cellulose ether having a flocculation temperature of 70-95° C., a DS-methyl of 0.1-0.8 and a DS-ethyl of 0.1-0.7. The cellulose ether has versatile properties and may be used as a thickening agen... | 01/15/2008 |
| 7244840 | Admixture, extrudable hydraulic composition and method for the selection of admixture A nonionic water-soluble cellulose ether is characterized in that when 3 pbw of the nonionic water-soluble cellulose ether is added to a mixture of 90 pbw of cordierite, 10 pbw of ordinary Portland cement, and 33 pbw of water, immediately followed by kneading at 20Â... | 07/17/2007 |
| 7229977 | Composition for soluble films with a new hydrolyzed polysaccharide The invention is concerned with film-forming compositions containing hydrolysates of the exopolysaccharide YAS34 for the use in pharmaceutical, veterinary, food, cosmetic or other products like films for wrapping food, aspics or jellies, preferably for predosed form... | 06/12/2007 |
| 7151173 | Admixture, extrudable hydraulic composition and method for the selection of admixture A nonionic water-soluble cellulose ether is characterized in that when 3 pbw of the nonionic water-soluble cellulose ether is added to a mixture of 90 pbw of cordierite, 10 pbw of ordinary Portland cement, and 33 pbw of water, immediately followed by kneading at 20Â... | 12/19/2006 |
| 7041168 | Process for cement extrusion that makes use of crosslinked cellulose additives A method of preparing construction material systems is described. The process includes extruding a composition of construction materials and an irreversibly crosslinked cellulose derivative that is prepared by a particular process. ... | 05/09/2006 |
| 7022837 | Cellulose ethers and method of preparing the same The present inventors have discovered that the solution rheology of cellulose ethers prepared from cellulose pulp is altered by mercerizing and recovering cellulose pulp before preparing the cellulose ethers. For example, the solution viscosity of carboxymethyl cell... | 04/04/2006 |
| 7009046 | Low-substituted hydroxypropyl cellulose and agent serving both as binder and disintegrant for dry direct compression Provided is an agent serving as a binder and a disintegrant for dry direct compression having a high binding property and fluidity. More specifically, provided are low-substituted hydroxypropyl cellulose having coiled fibers; an agent serving both as a binder and a ... | 03/07/2006 |
| 7001872 | Subterranean formation treating fluid and methods of fracturing subterranean formations The present invention relates to methods and compositions for treating subterranean well formations, and more specifically, to improved subterranean formation treating fluid concentrates, treating fluids and methods of using such treating fluids in subterranean form... | 02/21/2006 |
| 6958393 | Cellulose derivatives having gel-like rheological properties and process for the preparation thereof A description is given of cellulose derivatives having gel-like rheological properties in aqueous solution characterized in that: a) cellulose is alkalized with aqueous alkali metal hydroxide solution in the presence of a suspensio... | 10/25/2005 |
| 6958394 | Cellulose ester film A cellulose ester film is disclosed which comprises a polyhydric alcohol ester, which is an ester of one or more kinds of monocarboxylic acids with an aliphatic polyhydric alcohol, wherein the cellulose ester film has a water vapor transmission rate of from 20 to 26... | 10/25/2005 |
| 6939961 | Method for the production of low-viscous water soluble cellulose ethers A process for preparing low-viscosity water-soluble cellulose ethers by the oxidative decomposition of higher-viscosity cellulose ethers with hydrogen peroxide is described. The process involves: (a) forming, under conditions of intensive mixing and at temperatures ... | 09/06/2005 |
| 6933381 | Method of preparing modified cellulose ether Process 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 an electric current, preferabl... | 08/23/2005 |
| 6914139 | Solution of cellulose acylate dissolved in mixed solvent of ketone and ester In a cellulose acylate solution, cellulose acylate is dissolved in an essentially non-chlorinated solvent. The essentially non-chlorinated solvent is a mixture of a ketone having a solubility parameter of 19 to 21 and an ester having a solubility parameter of 19 to ... | 07/05/2005 |
| 6884884 | Galactomannan compositions and methods for making and using same The present invention relates to a method for depolymerizing galactomannan and derivatives thereof. The present invention relates to compositions comprising galactomannan and derivatives thereof prepared according to the methods of this invention and uses for the co... | 04/26/2005 |
| 6730636 | Environmentally acceptable well cement fluid loss control additives, compositions and methods Environmentally acceptable well cement fluid loss control additives, cement compositions including the additives and methods of using the compositions are provided. The environmentally acceptable fluid loss control additives are comprised of ethoxylated hydroxyethyl... | 05/04/2004 |
| 6610669 | Water insoluble derivatives of polyanionic polysaccharides 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 pyrrolidone, DMSO... | 08/26/2003 |
| 6525192 | Low-substituted hydroxypropyl cellulose and process for producing same The present invention provides a low-substituted hydroxypropyl cellulose having a loose bulk density of not less than 0.40 g/mL and a tap bulk density of not less than 0.60 g/mL and a process for producing the same.... | 02/25/2003 |
| 6294008 | Haze-free cellulose ether capsules and process for making Disclosed is a cellulose ether composition having a low molecular weight cellulose ether of a viscosity of about 200 centipoise or less in a two percent aqueous solution at 20° C. The composition has a sodium chloride content of about 0.3 weight percent ... | 09/25/2001 |
| 6261218 | Process and apparatus for making low molecular weight cellulose ethers 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 cellulose ether; e) ... | 07/17/2001 |
| 6229009 | Polycarboxylic based cross-linked copolymers A cross-linked copolymer based on at least one non-crosslinked polycarboxylic polysaccharide and at least one second non-crosslinked polycarboxylic polymer which is not a polycarboxylic polysaccharide and a cross-linking agent having at least two amine fu... | 05/08/2001 |
| 6166119 | Flowability additive A cement pumpability-enhancing additive which confers good pumpability on cementitious compositions such as concrete consists essentially of (a) polyethylene glycol; (b) diethylene glycol monobutyl ether and/or a derivative thereof; (c) polysaccharide; and (d) a th... | 12/26/2000 |
| 6103704 | Therapeutic methods using hyaluronic acid A method of accumulating a drug and a form of hyaluronic acid in the skin and/or exposed tissue of a human includes topically administering a therapeutically effective dosage amount of a formulation which comprises at least 5 mg/cm2 of the form... | 08/15/2000 |
| 6069135 | Use of hyaluronic acid or its derivatives to enhance delivery of therapeutic agents A pharmaceutical composition is provided comprising: (1) an agent selected from a medicinal agent and a therapeutic agent and combinations thereof in a therapeutically effective amount to treat a disease or condition in humans who will benefit from the treatme... | 05/30/2000 |
| 6054511 | High solids low viscosity polysaccharides Hydroxyethylcellulose (HEC), hydrophobically modified hydroxyethylcellulose (HMHEC), hydroxypropylcellulose (HPC), methylhydroxypropylcellulose (MHPC), carboxymethylhydroxyethylcellulose (CMHEC), guar, starch, xanthan, hydroxypropylguar (HP Guar) or carbo... | 04/25/2000 |
| 6030958 | Water insoluble derivatives of hyaluronic acid A water insoluble, biocompatible composition that includes the reaction product of a polyanionic polysaccharide and an activating agent.... | 02/29/2000 |
| 5998606 | Mn(IV)-mediated crosslinking and functionalization of chromatography media Novel methods are described to synthesize chromatography media. The methods describe a crosslinking procedure utilizing the catalytic effect of MnO(OH)2 in obtaining a very rigid matrix. The mechanism of crosslinking is likely of free-radical t... | 12/07/1999 |
| 5985850 | Compositions comprising hyaluronic acid and drugs A dosage amount of a pharmaceutical composition comprising a therapeutically effective amount of an agent to treat a disease or condition involving underperfused tissue and pathological tissue in humans and a form of hyaluronic acid, wherein the form of h... | 11/16/1999 |
| 5792753 | Compositions comprising hyaluronic acid and prostaglandin-synthesis-inhibiting drugs A topically administrable pharmaceutical composition is disclosed which comprises a therapeutically effective amount of a drug which inhibits prostaglandin synthesis, and an amount of a form of hyaluronic acid sufficient to transport the composition throu... | 08/11/1998 |
| 5780616 | Cationic polymer The invention relates to a cationic polysaccharide, preferably in fibrous form, having superabsorbent characteristics. The polysaccharides are substituted by quaternary ammonium groups, have a ds of at least 0.5, preferably 0.5 to 2.5 and are cross-linked... | 07/14/1998 |
| 5770711 | Polysaccharides substituted with polycarboxylated moieties A derivatized polysaccharide in which at least a portion of the active hydrogens originally present in the polysaccharide are substituted by monovalent aliphatic groups containing at least two carboxylic acid groups to an extent sufficient to provide a de... | 06/23/1998 |
| 5639738 | Treatment of basal cell carcinoma and actinic keratosis employing hyaluronic acid and NSAIDs A method of treating a mammal for a condition of the skin or exposed tissue selected from the group consisting of basal cell carcinoma and actinic keratosis is provided. The method consists essentially of topically administering to the site of the conditi... | 06/17/1997 |
| 5612321 | Antioxidant grafted polysaccharides Grafted polysaccharide compositions comprising polysaccharides grafted with antioxidants on at least one hydroxyl group of the polysaccharide. The use of antioxidant grafted polysaccharides or antioxidant grafted crosslinked polysaccharides as a treatment... | 03/18/1997 |
| 5589589 | Process for screening cellulose ethers A process and apparatus for screening cellulose ethers which have a finely fibrous or wad-like or woolly structure, wherein the process comprises the following steps: a) applying the cellulose ether (material to be screened) to a sieve surface, b) dividin... | 12/31/1996 |
| 5583214 | Dual functional cellulosic additives for latex compositions Cellulose ether derivatives comprising a hydrophobic substituent having an unsaturated alkyl portion are disclosed. The unsaturation in the alkyl portion of the hydrophobic substituent can promote crosslinking of the cellulose ether derivative. The cellul... | 12/10/1996 |
| 5498705 | Modified polysaccharides having improved absorbent properties and process for the preparation thereof Disclosed is a method for producing a surface-crosslinked, modified polysaccharide having improved absorption properties. The method involves forming a mixture of water and a crosslinking agent, adding a generally water-soluble, modified polysaccharide to... | 03/12/1996 |
| 5480984 | Process of preparing high solids low viscosity polysaccharides Hydroxyethylcellulose (HEC), hydrophobically modified hydroxyethylcellulose (HMHEC), hydroxypropylcellulose (HPC), methylhydroxypropylcellulose (MHPC), carboxymethylhydroxyethylcellulose (CMHEC), guar, starch, xanthan, hydroxypropylguar (HP Guar) or carbo... | 01/02/1996 |
| 5470964 | Process for the preparation of modified polysaccharides having improved absorbent properties Disclosed is a method for producing a surface-crosslinked, modified polysaccharide having improved absorption properties. The method involves forming a mixture of water and a crosslinking agent, adding a generally water-soluble, modified polysaccharide to... | 11/28/1995 |
| 5181958 | Aqueous emulsions of polyisocyanates and process for preparing them Aqueous emulsions of polyisocyanates comprising at least one cellulose derivative dissolved in water, and at least one polyisocyanate having a low, medium and/or high molecular weight.... | 01/26/1993 |
| 5108507 | Aqueous emulsions of polyisocyanates and process for preparing them Aqueous emulsions of polyisocyanates comprising at least one cellulose deative dissolved in water, and at least one polyisocyanate having a low, medium and/or high molecular weight.... | 04/28/1992 |
| 4997935 | Modified cellulose for biocompatible dialysis membranes III and process for preparation thereof A modified cellulose for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein cell is cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R'... | 03/05/1991 |
