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| Number | Title | Issue Date |
| 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 |
| 6686464 | 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 carboxy... | 02/03/2004 |
| 6669863 | Anionic cellulose ethers having temperature-dependent associative properties 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, alkali metal vinyl sulfonates, vinyl sulfonic a... | 12/30/2003 |
| 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 |
| 6541614 | Polysaccharide derivative Polysaccharide derivatives derived from a polysaccharide or a derivative thereof by substituting a part or all of the hydrogen atoms of the hydroxyl groups of the polysaccharide or the derivative thereof with the groups represented by the following formul... | 04/01/2003 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 5801239 | Process for the preparation of alkali salt of carboxy alkyl cellulose This invention relates to a process for the preparation of alkali salt of carboxyalkyl cellulose with good solubility in salt water which is useful for pertroleum drilling muds, which comprises (a) powdering high alpha cellulose obtained from fast growing... | 09/01/1998 |
| 5719274 | Process for the preparation of low molecular weight cellulose ethers Low molecular weight cellulose ethers which are suitable as a coating material for solid metered units and as an additive in ceramic compositions or cosmetics formulations or as a polymerization auxiliary are obtained by irradiation of a mixture of a high... | 02/17/1998 |
| 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 |
| 5541316 | Process for the production of polysaccharide-based polycarboxylates A process for the production of polycarboxylic acids or salts thereof from polysaccharides by oxidation with nitrogen dioxide/dinitrogen tetroxide with at least partial conversion of the primary alcohol groups of the polysaccharides into carboxyl groups a... | 07/30/1996 |
| 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 |
| 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 |
| 5463036 | Carboxymethylcellulose and its use in textile printing The present invention relates to carboxymethylcellulose (CMC) having a lower degree of substitution and to its use in textile printing.... | 10/31/1995 |
| 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 |
| 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 |
| 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 |
| 5346542 | Aqueous dispersion of enteric polymers and a method for producing the same A novel polymer aqueous dispersion of enteric cellulose derivatives without ester bonded substituents, of which anionic functional groups form salts with cations. The aqueous dispersion of the present invention is used as coating agents for foods and phar... | 09/13/1994 |
| 5346541 | Water dispersible formulations and materials and methods for influencing their water dispersibility The present invention relates to unexpected or surprising discoveries in the field of biodegradable, water-dispersible formulations and materials and methods for influencing their rate of dispersibility in water. In particular, the present invention relat... | 09/13/1994 |
| 5324717 | Therapeutical composition comprising hydrolyzed carboxylalkyl cellulose A therapeutical composition comprising hydrolyzed carboxyalkyl cellulose, wherein alkyl is methyl, ethyl or propyl, optionally in salt form, which hydrolyzed carboxyalkyl cellulose has a mass average molecular mass from about 200 to about 10,000. A method... | 06/28/1994 |
| 5247072 | Carboxyalkyl polysaccharides having improved absorbent properties and process for the preparation thereof Disclosed is a method for producing a water-swellable, generally water-insoluble, carboxyalkyl polysaccharide having improved absorption properties. The method involves forming a solution of carboxyalkyl polysaccharide and water, recovering the carboxyalk... | 09/21/1993 |
| 5218107 | Removal of undesirable material from water-soluble cellulose ether aqueous solutions This invention is a process of removing water-soluble impurities from a water-soluble cellulose ether aqueous solution containing such water-soluble impurities comprising treating an aqueous solution comprising a water-soluble cellulose ether and a water-... | 06/08/1993 |
| 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 |
| 5166336 | Method for production of a corn milling residue carboxymethyl ether salt A process for producing a corn milling residue carboxymethyl ether salt comprises reacting a corn milling residue with alkali in the presence of an aqueous carboxymethylating agent solution to give a corn milling residue carboxymethyl ether salt with an a... | 11/24/1992 |
| 5055570 | Cuprammonium-stable cellulose esters and carbamates for dialysis membranes A cellulose derivative comprising substitution-modified cellulose regenerated from a cuprammonium solution, the substituents being ester groups, wherein the acyl group represents one or more, optionally substituted, carbon chains with 10-36 carbon atoms, ... | 10/08/1991 |
| 5013832 | Process for working up water-soluble cellulose derivatives having high flocculation points A process for working up water-soluble cellulose derivatives, more especially with flocculation points above 85° C., after removal by condensation of readily volatile constituents of the crude product mixture resulting from an etherification reaction, by... | 05/07/1991 |
| 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 |
| 5001231 | Invert emulsion polysaccharide slurry Carboxymethylhydroxyethyl (CMHEC), starch and guar are preferred polysaccharides providing at least a 1% solution viscosity of 1000 cps at 25 C. An invert emulsion for oil drilling or paper manufacture comprises on a weight percent basis: ______... | 03/19/1991 |
| 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 |
| 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 |
| 4981959 | Modified cellulose for biocompatible dialysis membranes II and process for preparation thereof A modified cellulose 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 in the case of... | 01/01/1991 |
| 4981960 | Modified cellulose for biocompatible dialysis membranes IV 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'... | 01/01/1991 |
| 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 |
| 4940785 | Method of preparing cellulose ethers containing tertiary or quaternary nitrogen A method for preparing cellulose ethers containing tertiary or quaternary nitrogen by reacting alkylene epoxides with cellulose or its derivatives in an alkaline medium in the presence of water. Alkylene epoxides of the formulas ##STR1## or mixt... | 07/10/1990 |
| 4897473 | Homologation of carbonyloxy containing compounds This invention produces higher homologs, i.e., differing by at least a --CH2 -unit, of carbonyloxy-containing compounds by treating the carbonyloxy-containing compounds with carbon monoxide and hydrogen in the presence of a ruthenium-containing... | 01/30/1990 |
| 4883761 | Pertussis toxin gene: cloning and expression of protective antigen The complete nucleotide sequence of the pertussis toxin gene and the deduced amino acid sequences of the individual subunits have been determined. All five subunits are coded by closely linked cistrons and possibly expressed through a polycistronic mRNA, ... | 11/28/1989 |
