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| Number | Title | Issue Date |
| 8017766 | Methods for preparing alkali cellulose and cellulose ether Provided is a method for preparing alkali cellulose having alkali distributed uniformly therein. A uniform alkali distribution in the alkali cellulose makes it possible to prepare cellulose ether which has been substituted uniformly in an etherification reaction ste... | 09/13/2011 |
| 7402668 | Process of preparing alkylhydroxyalkylcellulose A process of preparing alkylhydroxyalkylcellulose (e.g., methylhydroxyethylcellulose and methylhydroxypropylcellulose) by reaction of cellulose in the presence of alkali metal hydroxide with an alkylating agent and a hydroxyalkylating agent is described. The process... | 07/22/2008 |
| 7365190 | Crosslinked polysaccharide, obtained by crosslinking with substituted polyethylene glycol, as superabsorbent New crosslinked polysaccharides useful as absorbents or superabsorbents alone or in a mixture are obtained by reacting polysaccharides (preferably containing carboxylates groups) with at least one crosslinker selected in the group constituted by activated polyethyle... | 04/29/2008 |
| 7361753 | Method for the production of easily wetted, water-soluble, powdered at least alkylated non-ionic cellulose ethers 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 range of 45 to 95° C. The inve... | 04/22/2008 |
| 7351422 | Hemostatic soluble cellulose fibers containing coagulating protein for treating wound and process for producing the same Proposed is a novel soluble trauma-healing and hemostatic cellulose fiber capable of absorbing and readily dissolving hemorrhaging trauma loci when applied thereto and of promoting the hemostatic action of blood platelets and fibrin and cell adhesion to the trauma s... | 04/01/2008 |
| 7288149 | Aqueous cement composition A fresh aqueous cement composition suitable for building purposes is described. It contains, besides a hydraulic cement, a methyl ethyl cellulose ether having a DS methyl of 0.4-2.2, a DS ethyl of 0.05-0.8 and a MS hydroxy-(C2-C3)-alkyl of 0-2.... | 10/30/2007 |
| 7285622 | Releasable linkage and compositions containing same A compound comprised of a hydrophilic polymer covalently yet reversibly linked to a amine-containing ligand through a dithiobenzyl linkage is described. ... | 10/23/2007 |
| 7276248 | Conjugate having a cleavable linkage for use in a liposome Conjugates of a hydrophobic moiety, such as a lipid, linked through a cleavable dithiobenzyl linkage to a therapeutic agent are described. The dithiobenzyl linkage is susceptible to cleavage by mild thiolysis, resulting in release of the therapeutic agent in its ori... | 10/02/2007 |
| 7262181 | Water soluble cellulose etherified derivatives styptic materials The present invention relates to hemostatic materials made of water-soluble cellulose ether derivatives, such as methylcellulose, ethylcellulose, hydroxyethylcellulose, and pharmaceutically acceptable salts of carboxymethylcellulose, especially to hemostatic materia... | 08/28/2007 |
| 7247722 | Polysaccharide aldehydes prepared by oxidation method and used as strength additives in papermaking Polysaccharide aldehydes are prepared using selective oxidation involving the use of nitroxyl radical mediated aqueous oxidation with a limited amount of oxidant and defined reaction conditions. These polysaccharide aldehyde derivatives having maximum effective alde... | 07/24/2007 |
| 7238368 | Releasable linkage and compositions containing same A conjugate comprised of a hydrophilic polymer covalently yet reversibly linked to a amine-, hydroxy- or carboxyl-containing ligand is described. The resulting conjugate is capable of releasing the parent amine, hydroxy, or carboxyl-containing compound via thiol-med... | 07/03/2007 |
| 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 |
| 7189306 | Process of treating lignocellulosic material to produce bio-ethanol This invention relates to a process of treating a lignocellulosic material to produce bio-ethanol. The process includes the steps of: (a) exposing the lignocellulosic material to conditions including a pH not less than about 8, and steam at a first pressure, to prod... | 03/13/2007 |
| 7101426 | Inorganic matrix composite reinforced by ionically crosslinked polymer An in situ ionic interaction between two additives, one a cationic strength enhancing additive and one an anionic crosslinking additive, is used to improve the mechanical properties of an article formed from a composite material. The composite has a discrete phase b... | 09/05/2006 |
| 7101928 | Polymeric thickeners for oil-containing compositions Novel thickeners for oil-containing compositions are crystalline polymers, preferably side chain crystalline polymers, which (a) have a crystalline melting point, Tp, and an onset of melting temperature, To, such that Tp−To | 09/05/2006 |
| 7049436 | Carbon dioxide compatible non-aqueous crosslinked fracturing fluids and methods for their use Alcohol based hydraulic fracturing fluids useful for treating oil and gas wells are disclosed. The fluids are compatible with carbon dioxide, and comprise an alcohol, a polymer, a crosslinking agent, and a breaker. Hydroxypropyl guar with a molar substitution of abo... | 05/23/2006 |
| 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 |
| 7034127 | Hydrophilic biopolymer-drug conjugates, their preparation and use Disclosed are methods of conjugating biologically active substances, particularly, alpha-interferon, with a hyaluronan or a mixture of a hyaluronan with at least one other hydrophilic polymer having a functional group capable of reacting with divinyl sulfone. Also d... | 04/25/2006 |
| 7026471 | Purification method of hydroxypropylmethyl cellulose phthalate The present invention relates to a purification method of hydroxypropylmethyl cellulose phthalate, more particularly to a method of preparing high-purity hydroxypropylmethyl cellulose phthalate through a simple crushing process which comprises: increasing fluidity o... | 04/11/2006 |
| 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 |
| 7012139 | Process of preparing delayed-dissolution cellulose ethers A process for preparing cellulose ethers having delayed dissolution in water is described. The process comprises: (a) treating a moist cellulose ether with a solution comprising a dialdehyde; (b) adding an aqueous salt solution to the moist cellulose ether, such tha... | 03/14/2006 |
| 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 |
| 6979462 | Stabilization of solid drug formulations Pharmaceutical formulations and dosage forms are provided having improved stability to moisture-induced degradation when compared with conventional dosage forms, especially tablets. The invention features low compression forms of drugs known to be susceptible to moi... | 12/27/2005 |
| 6960660 | Water-soluble cellulose ether having improved filtering characteristics and selection method A water-soluble cellulose ether is selected by judging whether the number of undissolved fibers having a size of 16–200 μm is up to 350 fibers/2 ml in a 0.1 wt % aqueous solution of the cellulose ether at 25° C. This water-soluble cellulose ether forms an aqueou... | 11/01/2005 |
| 6958314 | Alkylated alkyl polyglucoside non-ionic surfactants A petro-chemical free nonionic surfactant is prepared by the alkylation of an alkyl polyglucoside (APG). Under suitable alkylation reaction conditions, the surfactants are preferably prepared by the reaction of an APG with either alkyl halide or an alkyl tosylate. T... | 10/25/2005 |
| 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 |
| 6946204 | Paper/film composite structure and making method In a paper/film composite structure, the film is made of a low substituted cellulose ether having a molar degree of substitution with alkyl and/or hydroxyalkyl groups in the range of 0.05 to 1.3. The paper/film composite structure can be delivered to the waste paper... | 09/20/2005 |
| 6943247 | Building material compositions Described is a building material composition prepared from or having added thereto a particulate material selected from particulate polysaccharides or particulate polysaccharide derivatives. The particulate material of the building material composition is prepared b... | 09/13/2005 |
| 6939960 | Cellulose ethers A cellulose ether that is predominantly substituted in the C3 position of the anhydroglucose unit of the cellulose is described. In an embodiment of the present invention, the partial degree of substitution in the C3 position of the cellulose ether is ≧60%, based ... | 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 |
| 6924333 | Polyunsaturated fatty acids as part of reactive structures for latex paints: thickeners, surfactants, and dispersants The present invention is directed to a latex paint composition comprising polyunsaturated fatty acid containing additives derived from vegetable oils. In preferred embodiments, traditional water soluble additives such as thickeners, surfactants and dispersants are r... | 08/02/2005 |
| 6924369 | Water-soluble, sulfoalkyl-containing, hydrophobically modified cellulose ethers, process for preparing them, and their use as protective colloids in polymerizations The present invention relates to water-soluble ionic cellulose ethers from the group of the hydroxyalkylcelluloses which are substituted by on average from 0.001 to 1.0 alkyl group per anhydroglucose unit and which carry from 0.01 to 0.1 sulfoalkyl group per anhydro... | 08/02/2005 |
| 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 |
| 6911483 | Ion exchangers The present invention is related to a new quaternary amino (QA) anion exchanger comprising QA derivatized, hydroxy (C2-C4) alkylated and cross-linked regenerated cellulose, in which the level of derivitization with the QA-groups is 1.4 milli-eq... | 06/28/2005 |
| 6891035 | Process for bulk autoclaving Process for bulk autoclaving of polysaccharides, wherein the process includes: a) dissolving the polysaccharides in an aqueous solution and mixing until a homogeneous solution is obtained; b) filling the resulting solution in at least one container; c) placing the f... | 05/10/2005 |
| 6891034 | Process for preparing alkylhydroxyalkyl cellulose Described is a process of preparing alkylhydroxyalkyl cellulose, e.g., methylhydroxypropyl cellulose (MHPC). The process includes: (a) alkylating cellulose with an aqueous caustic solution containing from 1.5 to 5.5 equivalents of alkali metal hydroxide, e.g., NaOH,... | 05/10/2005 |
| 6884883 | Method for reducing pulp to powder and process for the production of a cellulose ether Pulp is ground by means of a vertical roller mill. The average particle diameter of the resulting powdered pulp is adjusted to 20-300 μm. The powdered pulp thus obtained is used as a starting material for the production of cellulose ethers. ... | 04/26/2005 |
| 6872820 | Finely divided polysaccharide derivatives Finely divided polysacharide derivatives are described. The finely divided polysacharide derivatives are prepared by a process comprising: a) forming an aqueous composition comprising a polysaccharide derivative and water, in which the polysaccharide derivative is s... | 03/29/2005 |
| 6849270 | Releasable linkage and compositions containing same A compound comprised of a hydrophilic polymer covalently yet reversibly linked to a amine-containing ligand through a dithiobenzyl linkage is described. ... | 02/01/2005 |
| 6849729 | Low-substituted cellulose ether powder and production process thereof Provided is a cellulose polymer having a water retention property, and good feeling upon use when applied to the skin and being suitably used as a carrier. More specifically, provided is a low-substituted cellulose ether powder comprising primary particles wherein a... | 02/01/2005 |
