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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 |
| 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 |
| 6764768 | Controlled release composition An alkanethiol of formula (1): HS—L—Q1—T—Q2—M—G—Z (1), may for a SAM. Under application of a potential to the surface, the leaving group —Z is released. ... | 07/20/2004 |
| 6656922 | Oral delivery of macromolecules Polysaccharides, which are widely used as an anticoagulation drugs, especially heparin, are clinically administered only by intravenous or subcutaneous injection because of their strong hydrophilicity and high negative charge. Amphiphilic heparin derivati... | 12/02/2003 |
| 6627751 | Hydrophobically modified anionic cellulose ethers 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 of haloacetic acids, alkali metal haloacetat... | 09/30/2003 |
| 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 |
| 6593468 | Essentially fiber-free cellulose ether with improved water retention, method for the production and use thereof This invention relates to a process for producing a substantially fiber-free carboxymethyl cellulose which predominantly exhibits elastic properties, to the use thereof as a superabsorbent material, and to the use thereof as an adjuvant substance for achi... | 07/15/2003 |
| 6589943 | Formulation of amphiphilic heparin derivatives for enhancing mucosal absorption Formulations for enhanced mucosal absorption of heparin are disclosed. In one embodiment, a powdered heparin composition is made by dissolving an amphiphilic heparin derivative including heparin covalently bonded to a hydrophobic agent in a water phase, d... | 07/08/2003 |
| 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 |
| 6245753 | Amphiphilic polysaccharide derivatives Polysaccharides, which are widely used as an anticoagulation drugs, especially heparin, are clinically administered only by intravenous or subcutaneous injection because of their strong hydrophilicity and high negative charge. Amphiphilic heparin derivati... | 06/12/2001 |
| 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 |
| 5986087 | Sulfonation of regenerated cellulose with sulfonated polymers and use of the thus modified fibres Sulfonated regenerated cellulose fiber obtained by adding a modifier to a viscose dope or alkali cellulose or cellulose solution and spinning fiber therefrom, wherefor the modifier is a starch etherified with C2 -C5 -alkylsulfonic ac... | 11/16/1999 |
| 5866387 | Method for immobilizing ligand or compound having ligand bonded thereto There is provided a method for immobilizing a ligand by reacting a solvent-insoluble carrier having aldehyde group with a compound shown by the general formula: ##STR1## wherein X is --S-- or --O--, R1, R2 and R6 are ... | 02/02/1999 |
| 5808052 | Use of cellulose mixed ethers as additives for earth pressure shields The present invention relates to water-soluble, particularly ternary, preferably ionic, cellulose mixed ethers, more particularly to anionic water-soluble cellulose mixed ethers, as additives for drilling fluid applications.... | 09/15/1998 |
| 5807997 | Method for immobilization of thiol compounds via activation of polymers, activated polymers, and products obtained by the method A method for the immobilization of an organic thiol compound, HS--R, in which R is an organic residue, to a water-insoluble polymer of non-polypeptide structure exhibiting a disulfide (--S--S--) group directly bound to a saturated carbon atom at each of i... | 09/15/1998 |
| 5591844 | Alkyl hydroxyalkyl cellulose ethers containing sulfoalkyl groups The present invention relates to alkyl hydroxyalkyl cellulose ethers which contain a sulfoalkyl group as a further substituent, to a process for the preparation of these cellulose ethers and to building material mixtures which are based on gypsum, hydrate... | 01/07/1997 |
| 5486606 | Cellulosic polymer, blood-treating device, and process for producing the same A cellulosic polymer wherein at least a part of the hydroxyl groups of the cellulosic polymer is modified as represented by the following general formula [I]: ##STR1## wherein R1 and R2 may be the same or different and each ... | 01/23/1996 |
| 5455341 | Highly substituted carboxymethyl sulfoethyl cellulose ethers (CMSEC), a process for their production and their use in textile printing The invention relates to certain highly substituted carboxymethyl sulfoethyl cellulose ethers (CMSEC), to a simplified and economic process for their production and to their use as thickeners in textile printing.... | 10/03/1995 |
| 5441932 | Sugar compounds for inhibition of the biosynthesis of sugar chains containing sialic acid An inhibitor of the biosynthesis of sugar chains containing sialic acid that is excellent in the suppression of inflammation or allergy, which comprises as an active ingredient a sugar compound of the formula (1): ##STR1## wherein R1 is a ... | 08/15/1995 |
| 5442054 | Highly substituted sulphoalkycellulose derivatives, especially sulphoethycellulose ether, a process for their preparation and their use as thickening agent for textile printing pastes The present invention relates to sulphoalkylcellulose derivatives, in particular sulphoethylcellulose, with a degree of substitution by sulphoethyl groups of 1.2 to 2.0 using a one- to three-step, preferably two-step process and the use of the sulphoalkyl... | 08/15/1995 |
| 5395930 | Alkyl hydroxyalkyl cellulose ethers containing sulfoalkyl substituents The present invention relates to alkyl hydroxyalkyl cellulose ethers which contain a sulfoalkyl group as a further substituent, to a process for the preparation of these cellulose ethers and to building material mixtures which are based on gypsum, hydrate... | 03/07/1995 |
| 5385607 | Water-soluble sulphoalkyl hydroxyalkyl derivatives of cellulose and their use in gypsum- and cement-containing compounds The invention relates to a new class of water-soluble ionic cellulose derivatives and their use as additive for gypsum- and cement-containing compounds.... | 01/31/1995 |
| 5358561 | Use of water-soluble sulphoalkyl derivatives of cellulose in gypsum-and cement-containing compounds The invention relates to water-soluble ionic cellulose derivatives and their use as additives for gypsum- and cement-containing compounds.... | 10/25/1994 |
| 5278304 | Water-soluble sulfoethyl cellulose ethers of very high solution quality and a process for their production The invention relates to water-soluble sulfoethyl cellulose ethers, more particularly methyl sulfoethyl cellulose ether (MSEC), of very high solution quality, to a process for its production and to the use of these products as thickeners, dispersants or b... | 01/11/1994 |
| 5245024 | Cellulose chromatography support This invention relates to an improved cellulose chromatography support and, in particular, to substantially spherical, high density cellulose particles. This invention also relates to a method of making these spherical, high density cellulose particles an... | 09/14/1993 |
| 5196527 | Porous ion-exchanged fine cellulose particles, method for production thereof, and affinity carrier This invention relates to ion-exchanged fine cellulose particles, porous fine cellulose particles which can be advantageously used as an affinity carrier, and methods of production thereof. These fine particles of the invention have the advantage that the... | 03/23/1993 |
| 5182380 | Dihydroxypropyl sulphoethyl celluloses, their preparation and their use Water-soluble, reversibly gelable cellulose ethers containing sulphoethyl groups (DS-sulphoethyl) and dihydroxpropyl groups (MS-dihydroxypropyl).... | 01/26/1993 |
| 5177199 | Water-soluble hydroxypropyl sulfoethyl cellulose derivatives (HPSEC) having a low degree of substitution and a process for their production Water-soluble hydroxypropyl sulfoethyl cellulose derivatives having an average degree of substitution (DS) with sulfoethyl groups of | 01/05/1993 |
| 5093489 | Modified chitin for biocompatible dialysis membranes IV and process for preparation of modified cellulose and modified chitin for use therewith A modified cellulose and/or chitin 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... | 03/03/1992 |
| 5093488 | Modified chitin for biocompatible dialysis membranes III and process for preparation of modified cellulose and modified chitin for use therewith A modified cellulose and/or chitin 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... | 03/03/1992 |
| 5093486 | Modified chitin for biocompatible dialysis membranes II and process for preparation of modified cellulose and modified chitin for use therewith A modified cellulose and/or chitin for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein cell is unmodified cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 ... | 03/03/1992 |
| 5008385 | Cellulose derivatives and fibers and membranes made therefrom Cellulose derivatives are disclosed which have the following formula: ##STR1## wherein Z is selected from the group consisting of alkylene, alkenylene, alkynylene, cycloalkylene or benzylene or xylylene radicals, which may or may not be substituted; ... | 04/16/1991 |
| 5001232 | Carboxymethylsulphoethyl celluloses and a process for their preparation Improved water soluble carboxymethylsulphoethyl celluloses may be obtained by suspending cellulose, adding compounds which transfer sulphoalkyl and carboxymethyl and then etherifying after alkalization.... | 03/19/1991 |
| 4992538 | Silated polysaccharides Silated polysaccharides having 0.0005 to 2.0 silyl molar substitution per anhydrosaccharide unit form water resistant films when cast from aqueous solution and dried in the presence of atmospheric carbon dioxide. These films are soluble in aqueous caustic... | 02/12/1991 |
| 4990609 | Sulfoethyl cellulose of high solution quality and a process for its production Sulfoethyl cellulose prepared by addition of an alkylating agent and subsequent addition of alkali shows particularly valuable properties.... | 02/05/1991 |
| 4972007 | Use of cellulose derivatives in drilling fluids Cellulose derivatives which are substituted in a specified manner by both carboxyalkyl groups and sulphoalkyl groups which are suitable in drilling fluids.... | 11/20/1990 |
| 4822681 | Activated polymer solid bodies and processes for the production thereof A chemically modified and activated, hydroxyl-group-containing, natural or synthetic, polymeric solid body surface is disclosed, as well as a process for the activation of such solid body surfaces by means of organo-silanes and, if necessary, homo- or het... | 04/18/1989 |
| 4694077 | Novel cellulose derivative, process for preparing the same and sulfur dioxide gas permselective membrane comprising the same Novel cellulose derivative, process for preparing the same and sulfur dioxide gas permselective membrane comprising said derivative. Hydrocarbysulfinylethyl cellulose represented by the formula (I): ##STR1## wherein, X may be the same or different and rep... | 09/15/1987 |
| 4272526 | Derivatives of chloral The present invention relates to a chloral derivative having the general formula ##STR1## in which Y' is a polysaccharide consisting of a chain of anhydroglucose, modified anhydroglucose or uronic acid units as substituent group and in which R i... | 06/09/1981 |
| 4178439 | Sulphated ion exchanger and method for preparation thereof The invention relates to a novel sulphated cationic ion exchanger and to a method for preparation thereof. In addition it relates to a method of improving the capacity of an exchange matrix to receive sulphated groups. Although the general attraction of s... | 12/11/1979 |
