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| Number | Title | Issue Date |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 7105587 | Method and composition for polymer-reinforced composite cementitious construction material A method and composition for polymer-reinforced composite cementitious construction materials is described. In one embodiment, a crosslinking component is mixed with a high molecular weight strengthening component and an inorganic cementitious material. The addition... | 09/12/2006 |
| 7098327 | Dual-functional ion exchange resins from agricultural by-products A process for the production of dual-functional ion exchange resins from lignocellulosic agricultural material involving anionization of the lignocellulosic agricultural material with citric acid and then cationization of the lignocellulosic agricultural material wi... | 08/29/2006 |
| 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 |
| 7005515 | Process for preparing alkyl hydroxyalkyl cellulose ethers The process for preparing an alkyl hydroxyalkyl cellulose ether comprises the steps of: a) alkalizing cellulose to obtain alkali cellulose, b) reacting alkali cellulose with an alkyl halogenide until an alkyl cellulose ether with a D.S.(alkyl) value of from 0.7 to 2... | 02/28/2006 |
| 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 |
| 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 |
| 6905694 | Hydrophobically modified polysaccharide in personal care products A personal care composition is composed of: (a) from about 0.1% to about 99% by weight of a vehicle system which comprises a hydrophobically modified nonionic water soluble polysaccharide polymer which comprises a water soluble pol... | 06/14/2005 |
| 6902797 | Gypsum-based composite materials reinforced by cellulose ethers A gypsum-based composite structure is prepared from a slurry comprising a mixture of calcium sulfate hemihydrate, a cellulose ether additive other than CMC and an amount of water that is sufficient to form a slurry. The calcium sulfate hemihydrate is hydrated by the... | 06/07/2005 |
| 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 |
| 6843845 | Admixture and extrudable hydraulic composition An admixture comprising (A) a nonionic water-soluble hydroxyethyl cellulose and/or hydroxyethyl ethyl cellulose having a viscosity of at least 500 mPa·s as measured in a 1 wt % aqueous solution at 20° C., and (B) another nonionic water-soluble cellulose ether havi... | 01/18/2005 |
| 6602994 | Derivatized microfibrillar polysaccharide 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 combination of both anionic ... | 08/05/2003 |
| 6531593 | Method for production of cellulose derivatives and the resulting products 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 ether linkages betwe... | 03/11/2003 |
| 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 |
| 6482876 | Agglomerates for the production of an aqueous binder system The invention relates to an agglomerate containing at least one of the following water-soluble or water-dispersible materials as a bonding base polymer: carboxylized and/or alkoxylized starch, cellulose ether and fully synthetic vinyl polymers and/or poly... | 11/19/2002 |
| 6380381 | Low-substituted hydroxypropyl cellulose The present invention provides low-substituted hydroxypropyl cellulose exhibiting good granulation characteristics and tablet properties. Specifically, there is provided low-substituted hydroxypropyl cellulose having a hydroxypropoxyl content in the range... | 04/30/2002 |
| 6320043 | Process for preparing fine-particle polysaccharide derivatives The invention relates to a new, particularly economic process for preparing pulverulent polysaccharide derivatives, in particular cellulose derivatives, having a thermal flocculation point; the process comprises soaking or dissolving the polysaccharide de... | 11/20/2001 |
| 6313287 | Water-soluble, sulfoalkyl-containing, hydrophobically modified cellulose ethers, processes for preparing them, and their use in emulsion paints Water-soluble sulfoalkyl-containing hydrophobically modified cellulose ethers, processes for preparing them, and their use in emulsion paints The present invention relates to water-soluble ionic cellulose ethers from the group of the hydroxyalkylcelluloses whi... | 11/06/2001 |
| 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 |
| 6248880 | Nonionic cellulose ether with improve thickening properties 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 the general formula ##STR1## where R is an aliphatic group of ... | 06/19/2001 |
| 6201070 | Method for enhancing the toughness of cycloaliphatic epoxide-based coatings Methods are disclosed for enhancing the toughness, e.g., resistance to cracking upon flexation, of coatings made from cycloaliphatic epoxide derivatives wherein the cycloaliphatic epoxide derivative is a cycloaliphatic epoxide ester of a hydroxy-functiona... | 03/13/2001 |
| 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 |
| 6111011 | Cellulose ethers containing butenyl groups and use thereof as protective colloids in polymerizations Water-soluble, nonionic cellulose ethers selected from the group consisting of alkylcelluloses and hydroxyalkylcelluloses which are additionally substituted by butenyl groups are used as protective colloids in the preparation of aqueous polymer dispersion... | 08/29/2000 |
| 6068697 | Polysaccharide derivatives and hydraulic compositions A polysaccharide derivative prepared by replacing all or part of the hydroxyl hydrogen atoms of a polysaccharide or polysaccharide derivative by (A) a hydrophobic substituent having a C8 -C43 hydrocarbon chain as the partial structur... | 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 |
| 5994531 | Cellulose ethers containing 2-propenyl groups and use thereof as protective colloids in polymerizations Water-soluble, nonionic cellulose ethers selected from the group consisting of alkylcelluloses and hydroxyalkylcelluloses having an average degree of polymerization of less than 900 which is substituted by, on average, from 0.01 to 0.04 2-propenyl groups ... | 11/30/1999 |
| 5898072 | Aqueous suspension of a cellulose ether, method for the production thereof, and composition The invention concerns an aqueous suspension of a non-ionic, water-soluble cellulose ether cross-linked with glyoxal, in the presence of an electrolytic salt which gives a pH value below 8.0 in water and at the concentration involved. Conveniently, the su... | 04/27/1999 |
| 5840882 | Process for preparing cellulose ethers with recovery of alkali Cellulose ethers which contain hydroxyalkyl groups are prepared, with the recovery of sodium hydroxide, by cellulose being etherified with alkylene oxide in a water-containing organic suspension medium in the presence of at least 1.0 mol of sodium hydroxi... | 11/24/1998 |
| 5837864 | Method for producing a suspension in water of a cellulose ether, and dry mixture suitable for use in the production of the suspension In a method of producing a suspension of a nonionic cellulose ether that has no turbidity point, the water forming part of the suspension is mixed with a dry mixture containing a cellulose ether, which is cross-linked with glyoxal, and an electrolyte salt... | 11/17/1998 |
| 5827835 | Thermally-gelling emulsions Thermally gelling emulsion compositions which reversibly increase in either loss modulus or storage modulus, or both, upon contact with the eye, skin, mucous membrane or body cavity are disclosed. The emulsion compositions contain one or more nonionic sub... | 10/27/1998 |
| 5814141 | Liquid crystalline cellulose (ether) ethers as interferentially effective chromophoric substances The invention relates to a liquid crystalline, photo cross-linkable main-chain polymer used as interferentially effective, chromophoric substance for colored paints, in which the main mesogenic groups are disposed at least approximately in a chiral-nemati... | 09/29/1998 |
| 5804166 | Low VOC hair sprays containing cellulose ethers Disclosed are hair spray compositions containing non-ionic cellulosic ethers in a solvent base containing water and volatile organic solvent wherein the level of volatile organic solvent in the composition is about 80% or less, and wherein the non-ionic c... | 09/08/1998 |
| 5770528 | Methylated hydroxypropylcellulose and temperature responsive products made therefrom 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 below room temperatur... | 06/23/1998 |
| 5743949 | Stable aqueous wax dispersions The present invention relates to stable aqueous wax dispersions comprising A) 5 to 65% by weight of microized wax and B) 0.01 to 7% by weight of polymeric carbohydrate derivatives as dispersing agent. The waxes are amide, montan and polyethylene waxes, and particul... | 04/28/1998 |
