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| Number | Title | Issue Date |
| 5068321 | Carbonic acid esters of polysaccharides and a process for their production New polysaccharide carbonates are produced by acylation of polysaccharides with carbonic acid esters and have degrees of substitution of preferably 0.5 to 3.... | 11/26/1991 |
| 5026834 | Modified cellulose for biocompatible dialysis membranes A modified cellulose has a structure represented by the formula ##STR1## Cell is the framework of the unmodified cellulose molecule or of the chitin molecule, in each case without hydroxyl groups. Z is a nitrogen or sulfur atom. In the case where Z i... | 06/25/1991 |
| 5023246 | Betaine group-containing derivatives of carboxymethylcellulose, their synthesis and their use in cosmetic preparations Betain group-containing derivatives of carboxymethylcellulose are disclosed. They are characterized in that all or a portion of the carboxymethyl groups are or is replaced by groups of the general formula ##STR1## wherein R1 is hydrogen or... | 06/11/1991 |
| 4999425 | Cellulose aminomethanate by ion-exchange extraction This invention relates to an improvement to a process for synthesizing cellulose aminomethanate which comprises slurrying cellulose in an aqueous caustic solution, in the presence of urea; steeping the slurried mixture for a time sufficient to permit swel... | 03/12/1991 |
| 4997933 | Cellulose aminomethanate by acid neutralization This invention relates to an improvement to a process for synthesizing cellulose aminomethanate which comprises slurrying cellulose in an aqueous caustic solution, in the presence of urea; steeping the slurried mixture for a time sufficient to permit swel... | 03/05/1991 |
| 4988806 | Nitrogen-containing derivatives of carboxymethylcellulose, their synthesis and their use in cosmetic preparations Derivatives of carboxymethylcellulose are disclosed in which all or a portion of the carboxymethyl groups are replaced by groups of the general formula ##STR1## in which R1 is a hydrogen or methyl group, R2 is a divalent aliphat... | 01/29/1991 |
| 4983399 | Direct compression carrier composition Disclosed is a direct compression carrier composition comprising one or more cellulose carboxylic acid esters and a lubricant useful in the preparation of tablets containing a physiologically active compound. Also disclosed are direct compression tabletin... | 01/08/1991 |
| 4963664 | Processes for the preparation of amides and amines from a material having carboxyl-containing polysaccharides and products therefrom New amines and amides of carboxylated polysaccharides having the nitrogen of the amido and amino groups directly attached to the polysaccharides and method of making same, based on reacting in solution a material having carboxyl-containing polysaccharides... | 10/16/1990 |
| 4952684 | Processes for the preparation of amides and amines from a material having carboxyl-containing polysaccharides and products therefrom New amines and amides of carboxylated polysaccharides having the nitrogen of the amido and amino groups directly attached to the polysaccharides and method of making same, based on reacting in solution a material having carboxyl-containing polysaccharides... | 08/28/1990 |
| 4936865 | Catalysts and processes for formaldehyde-free durable press finishing of cotton textiles with polycarboxylic acids Catalysts for the rapid esterification and crosslinking of fibrous cellulose in textile form by polycarboxylic acids at elevated temperatures are disclosed. The catalysts are acidic or weakly basic salts selected from the alkali metal dihydrogen phosphate... | 06/26/1990 |
| 4923979 | Cellulose carbamate products of lowered carbamate content The carbamate content of cellulose carbamate products is reduced by treating such products with solutions of a base, which solution also contains one or several alkali metal salts, particularly carbonates, sulfates, phosphates, borates and acetates.... | 05/08/1990 |
| 4861874 | Method of lowering the carbamate content of cellulose carbamate products using a base/alkali metal salt mixture The carbamate content of cellulose carbamate products is reduced by treating such products with solutions of a base, which solution also contains one or several alkali metal salts, particularly carbonates, sulfates, phosphates, borates and acetates.... | 08/29/1989 |
| 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 |
| 4801699 | Polysaccharide esters containing acetal and aldehyde groups Polysaccharide esters containing aldehyde and acetal groups having the structural formulas ##STR1## are prepared by reacting a polysaccharide, such as a starch, gum, or cellulose, with an acetal-containing reagent which contains a functional gro... | 01/31/1989 |
| 4795714 | Compositions for controllably releasing alcohols or amines An adjustable accumulated thermal exposure indicator device, and method of use, for affixing to and indicating deterioration of perishable goods and the like, comprising (1) a reactant yielding material that reacts via one or more steps at a rate dependin... | 01/03/1989 |
| 4760368 | Moisture sensor A moisture sensitive material prepared by cross-linking cellulose acetate through at least one selected from the group consisting of compounds containing two or more isocyanate groups; compounds containing two or more epoxy groups; compounds containing tw... | 07/26/1988 |
| 4708951 | Anticoagulative high-molecular compositions Anticoagulative high-molecular composition which comprises a cellulosic polyelectrolyte complex formed from a polycationic cellulose derivative such as a quaternary ammonium salt of hydroxyalkyl cellulose, and a polyanionic cellulose such as sodium cellul... | 11/24/1987 |
| 4683298 | Process for the preparation of aminated polysaccharide derivatives A process for preparing an amino deoxy derivative of a polysaccharide. The process comprises oxidizing the polysaccharide with dimethyl sulfoxide in combination with acetic anhydride or acetic anhydride with paraformaldehyde in a first step. The product f... | 07/28/1987 |
| 4673754 | Platinum and palladium complexes Compositions of matter are provided wherein cis-platinum (II) and cis-palladium (II) moieties having amine substituents are bonded to anionic macromolecular entities. These compositions of matter may have improved solubility in the plasma and are effectiv... | 06/16/1987 |
| 4574151 | Amine salts and products containing them A water soluble salt is formed between an alkaloid and a polymeric acid and contains at least 40% by weight of the alkaloid. The alkaloid is generally nicotine and the polymeric acid is generally a polysaccharide that has been modified by carboxyalkyation... | 03/04/1986 |
| 4565857 | Radiation-curable cellulose coating Ethylenically unsaturated cellulose esters are provided. These ethylenically unsaturated cellulose esters are the reaction product of a cellulose ester having unreacted hydroxyl groups and a polymerizable ethylenically unsaturated compound having an isocy... | 01/21/1986 |
| 4557951 | Cellulosic organic solvent soluble products The invention provides an improved cellulosic ester or ether product with a degree of ester or ether substitution of between 2.0 and about 2.9 which is derivatized or further reacted by reaction with an acrylamide reactant to provide pendant acrylamide fu... | 12/10/1985 |
| 4491660 | Matrix polymers for binding endotoxins An endotoxin binding material affixed to a support is disclosed. One embodiment is a matrix material capable of binding endotoxins and comprising a polar, water-insoluble, high molecular weight polymer support to which is attached groups which adsorb endo... | 01/01/1985 |
| 4415552 | Composition for establishing immunological tolerance A water-soluble non-immunogenic carrier, namely carboxymethyl cellulose, is provided which, in attachment to allergens or other haptens, is capable of inducing an immunological tolerance in an individual of a mammalian species to the allergen or hapten. T... | 11/15/1983 |
| 4330440 | Activated matrix and method of activation The invention relates to the carbonylation of cross linked substituted and unsubstituted polysaccharides, their copolymers with macroporous synthetic polymers, macroporous synthetic polymers and rigid supports with pendant hydroxyalkyl groups. The carbony... | 05/18/1982 |
| 4294731 | Method for drying absorbent modified cellulosic polymers and the like A method for oven drying chemically modified cellulosic materials, especially fibers, having improved fluid absorbency involves incorporating into the cellulose structure while swollen an amphiphilic compound miscible with water which will not evaporate w... | 10/13/1981 |
| 4247657 | Process for the production of alkali metal-cellulose-silicates and their reaction products Small particles of cellulose-containing plants, fine granular oxidated, silicon compounds and an alkali metal hydroxide are mixed, then heated to 150° C. to 220° C. while agitating until the plant particles soften or melt, thereby producing an alkali me... | 01/27/1981 |
| 4243757 | Process for the production of alkali metal-cellulose-silicates and their reaction products Small particles of cellulose-containing plants, fine granular oxidated silicon compounds and an alkali metal hydroxide are mixed, then heated to 150° C. to 220° C. while agitating until the plant particles soften or melt, thereby producing an alkali met... | 01/06/1981 |
| 4241194 | Process for the production of alkali-metal-cellulose-silicate foams and their reaction products Small particles of cellulose-containing plants, fine granular oxidated silicon compounds and an alkali metal hydroxide are mixed, then heated to 150° C. to 220° C. while agitating until the plant particles soften or melt, thereby producing an alkali met... | 12/23/1980 |
| 4224439 | Activated matrix and method of activation Carbonylation of a polysaccharide and the product of that carbonylation. The carbonylated product can be used to prepare an affinity chromatography matrix which is an uncharged species of varying pH's. The carbonylated product is also useful for the prepa... | 09/23/1980 |
| 4200735 | Cellulosic ion exchange fibers and method for preparing same A cellulosic ion-exchange fiber having a functional group represented by the formula, ##STR1## wherein n is 1 or 2 and M is a hydrogen atom, alkali metal or ammonium residue, is produced by dipping a cellulosic fiber in an aqueous solution conta... | 04/29/1980 |
| 4172195 | Process for the separation and purification of oligo and polyhydroxy compounds and borate esters thereof A process for the separation and/or purification of oligo- and polyhydroxy compounds by introducing and subsequently eliminating protective groups, wherein oligo- and polyhydroxy compounds are reacted with bis(ethyl-pivaloyloxy)-diboroxane or ethylboroxin... | 10/23/1979 |
| 4137399 | Method of preparing functionalized celluloses Production of cellulose derivatives substituted by groups having functional moieties by reaction of a hydroxyl group(s) of the cellulose with an at least bifunctional reagent. The reagent is reacted with cellulose dissolved in dimethylsulfoxide containing... | 01/30/1979 |
| 4035569 | Preparation of cellulose nitrite Preparation of partially substituted nitrate and sulfate esters of polysaccharides or polyvinylalcohol, their esters containing a mixture of nitrite with sulfate or nitrate groups, aqueous media thickened with such esters, the simultaneous preparation of ... | 07/12/1977 |
| 3950282 | Polyanhydroglucose biodegradable polymers and process of preparation The biodegradable polymer having the formula: wherein M is a polyanhydroglucose block which does not contain any ester substituents and wherein W and Z are organic diisocyanates having the formula: ##EQU1## or ##EQU2## wherein R is an dival... | 04/13/1976 |
