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7485689 |
Tensio-active glucoside urethanes
Disclosed are glucoside alkyl urethanes composed of units of the formula: A(O—CO—NH—R) 3 wherein A represents a glucosyl unit of a starch hydrolysate molecule, the starch hydrolysate having...
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7459579 |
Method of separating optically active dihydroxy-heptenoic acid esters
An optically active dihydroxyheptenoic acid ester having an aromatic group is separated from a solution containing a mixture of optical isomers of digydroxyheptenoic acid ester by liquid...
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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...
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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...
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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...
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6987181 |
Oxidized polymeric carbohydrates and products made thereof
The present invention relates to a polysaccharide having functional groups, wherein said groups are aldehyde groups formed at positions C 2 and/or C 3 as well as at position C 6 of the...
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6951933 |
Superabsorbent polymer
The present invention provides a polymer derived from a cellulosic, lignocellulosic, or polysaccharide material having superabsorbent properties. Methods for making the polymer and personal care...
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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...
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6933380 |
Excipients containing low residual solvent and method for producing the same
The present invention provides low-residual-solvent containing excipients with residual solvent less than <3000 ppm. Most of the excipients are required to first be modified to become more water...
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6929884 |
Method for manufacture of films containing insoluble solids embedded in cellulose-based films
A film which slowly releases solids is prepared by dissolving cellulose in a solvent such as an alkali metal salt, for example L 1 Cl in a polar solvent such as DMAC, dispersing the solid in the...
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6761272 |
Filters consisting of filter paper or paper-type nonwoven material
Filters and methods for producing filter paper or paper-like nonwoven materially consisting partially or wholly of fibrous cellulose containing material. The filters provided are characterized by...
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RE38484 |
Cationized hydroxyalkylcellulose and process for producing the same
Cationized hydroxyalkylcelluloses, which are highly compatible with surfactants, are represented by the following formula (I): wherein R 1 , R 2 and R 3 represent a hydrogen atom or a group...
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6635754 |
Cellulose particles, method for producing them and their use
Cellulose particles are described that have cationic groups in their interior. In one aspect, at least 10%, and preferably 50% or more, of the cationic groups are present within the particle...
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6627749 |
Powdered oxidized cellulose
A controlled chemical method to produce oxidized cellulose in high yields (75-95%) and different levels of oxidation (carboxyl content <25.6%, w/w), suitable for use as an immobilizing matrix or...
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6624298 |
Esterified polysaccharide products and β-lactone ring opened ketene dimer products containing the compositions, and process of making the same
Esterified polysaccharides and the process of making such products are disclosed. The process can be enzymatic where an enzyme is used as a catalyst for the reaction. The process can also be...
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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...
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6590095 |
Method of preparing a cellulose carbamate solution
The present invention concerns a method of preparing a cellulose carbamate solution by dissolving cellulose carbamate in sodium hydroxide solution at temperatures of <10° C., wherein an 8% to...
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6579977 |
Biosorbents and process for producing the same
A process is disclosed for producing biosorbents by phosphorylation of cellulose-containing materials with phosphoric acid or ammonium phosphate in the presence of urea. Also disclosed are...
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6562961 |
Aminoalkyl trialkyl silyl cellulose and a method for coating surfaces
The invention relates to polysaccharide derivatives comprising a) at least one hydrophobic and b) at least one nitrogen-containing substituent; in particular, the derivative is a cellulose ether...
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6559134 |
Solid preparation containing low-substituted hydroxypropyl cellulose and production process thereof
Provided are a solid preparation which rapidly disintegrates in the oral cavity when taken together with the saliva in the oral cavity or a small amount of water, can be prepared easily and has...
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6548659 |
Process for ammoniating cellulosic materials
Process for enriching the organic nitrogen content of commercial scale quantities of cellulosic materials which includes the steps of: a) placing substantially dry or unwetted cellulosic material...
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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...
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6455691 |
Preparation of chemically reactive polysaccharides
This invention describes improvements in or relating to the production of polysaccharide derivatives; more particularly it relates to a method of converting insoluble polysaccharides to a form in...
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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...
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6362330 |
Polysaccharide-based thermoplastic material, process for preparing the same and method of use thereof
The present invention relates to novel thermoplastic materials based on polysaccharide ethers which are simultaneously substituted by carboxylic acid ester groups and carbamate groups, together...
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6242595 |
Process for the recovery of cellulose carbamate
The present invention comprises a process for the recovery from a reaction mixture of cellulose carbamate produced by conversion of cellulose with excess urea in an inert organic liquid reaction...
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6197951 |
Starch graft copolymer blast media
The invention discloses a starch graft poly(meth)acrylate blast media which is effective in paint removal. The media is superior to a physical blend of the components (i.e., starch and acrylic...
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6103885 |
Method of making amide modified carboxyl-containing polysaccharide and fatty amide-modified polysaccharide so obtainable
The Invention pertains to a process for the amidation of a material having at least one carboxyl-containing polysaccharide. The provided process involves a first step in which the carboxyl groups...
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6075166 |
Photolytically cleavable encoding and linking agents for use in combinatorial chemistry
The present invention is to novel photochemically cleavable aryl sulfonamides of the formula P--A 3 --A 2 --A 1 --S(O) 2 NR 1 R 2 wherein R 1 and R 2 are independently selected from...
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6071505 |
Cationic cellulose derivatives of controlled charge density useful in cosmetic preparations
Water-soluble quaternary ammonium cellulosic derivatives of controlled charge density are disclosed. These derivatives are useful in cosmetic preparations, such as hair and skin formulations, for...
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5948904 |
Process for the preparation of aromatic carbamoyl-substituted polysaccharide derivatives
The invention relates to a process for the preparation of polysaccharide-N-arylcarbamates in suitable form as supports for chromatography, which process comprises adding to polysaccharide...
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5906926 |
Method for modified manufacture of cellulose carbamate
A method for the manufacture of cellulose carbamate, whereby cellulose pulp is preliminarily activated by alkaline, hydrothermal and/or enzymatic treatment, then the activated cellulose pulp is...
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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...
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5831076 |
Production of cellulose carbamate with improved solubility properties
The invention comprises a process for producing cellulose carbamate with improved solubility properties comprising converting cellulose with urea in an inert, liquid, organic reaction carrier, at...
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5780619 |
Starch graft poly(meth)acrylate blast media
The invention discloses a starch graft poly(meth)acrylate blast media which is effective in paint removal. The media is superior to a physical blend of the components (i.e., starch and acrylic...
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5739304 |
Process for the preparation of water-soluble aminoalkyl derivatives of polysaccharides
Water-soluble polysaccharides which contain a) substituents selected from the group consisting of alkyl, hydroxyalkyl, carboxyalkyl and sulfoalkyl, b) N,N-disubstituted aminoalkyl groups, are...
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5734043 |
Separating agent for optical isomers
A separating agent which, when used as the packing material for reverse-phase liquid chromatography, has excellent baseline stability in the mobile phase and an increased number of steps of the...
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5708162 |
Process for the preparation of low molecular weight polysaccharide ethers
Process for the preparation of low molecular weight polysaccharide ethers which can be employed in binders for improving adhesive power and film-forming properties, by oxidative degradation of...
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H001704 |
Modified cellulose fiber having improved curl
Disclosed is a modified cellulose fiber having improved curl characteristics. Specifically, the present invention relates to oxidized or sulfonated cellulose fibers being highly curled, wherein...
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5663311 |
Polysaccharide derivative and separation agent
The present invention provides a novel polysaccharide derivative in which part or the whole of the hydroxyl groups or the amino groups contained in a polysaccharide are displaced by two or more...
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5627269 |
Process for the extraction of soluble polysaccharides
Soluble polysaccharides such as pectin and carrageenan are extracted from vegetable matter by passing an extraction fluid through a fixed bed of the polysaccharide-containing vegetable material to...
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5614616 |
Process for the production of polysaccharides
Polysaccharides corresponding to formula (I) ##STR1## in which S is a recurrent monosaccharide unit and B is a group of formula (Ia) attached to the monosaccharide unit S by an O atom ##STR2##...
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5612321 |
Antioxidant grafted polysaccharides
Grafted polysaccharide compositions comprising polysaccharides grafted with antioxidants on at least one hydroxyl group of the polysaccharide. The use of antioxidant grafted polysaccharides or...
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5589577 |
Applications and methods for the preparation of fatty acid esters of polysaccharides
The invention is related to highly substituted, water-insoluble, poorly water-permeable fatty acid esters of polysaccharides and compositions comprising said polysaccharides esters suitable for use...
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5543506 |
Polysaccharide derivative and separating agent
The present invention provides a novel polysaccharide derivative in which part or all of the hydroxyl groups or the amino groups contained in a polysaccharide are replaced by two or more kinds of...
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5490978 |
Block copolymers of polysaccharides and polyalkylene oxides
Polysaccharides (e.g., dextran) of different molecular weights were substituted at the anomeric carbon with polyalkylene oxides of different molecular weights to give novel diblock copolymers. The...
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5463034 |
Polysaccharides, process for their preparation and their use
New polysaccharides have recurring units I or a salt thereof. ##STR1##
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5378827 |
Process for the production of cellulose carbamate
A process for the production of cellulose carbamate from cellulose and urea through the conversion of the cellulose with excess urea in an inert liquid organic reaction carrier at a temperature in...
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5358679 |
Manufacture of regenerated cellulosic fiber by zinc free viscose process
A process for the production of rayon fibers. The viscose solution is spun into a spinbath which is acidic in character but has no zinc salt like conventional baths. The spin bath contains...
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5349089 |
Reagent for preparing polycationic polysaccharides
Cationic polysaccharide derivatives are prepared by reacting a polysaccharide with a polycationic reagent having one polysaccharide reactive group and at least two cationic groups. Suitable...
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