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| Number | Title | Issue Date |
| 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 |
| 4996309 | Process for preparing sucrose fatty acid ester powder A process for preparing sucrose fatty acid esters by reacting sucrose and a fatty acid alkyl ester in an aqueous reaction system in the presence of a catalyst, adding water to the reaction mixture to dissolve it, adjusting the reaction mixture to a neutra... | 02/26/1991 |
| 4996306 | Glycoside preparation directly from aqueous saccharide solutions or syrups Glycoside products are successfully prepared directly from aqueous saccharide solutions or syrups, and with acceptably low levels of undesired homopolymerized saccharide by-products, by dissolving same in the desired alcohol reactant or in an alcohol reac... | 02/26/1991 |
| 4992536 | Preparation of polycationic polysaccharides by site selective reaction Polycationic polysaccharide derivatives containing more than one cationic substituent per substituted hydroxyl group are prepared by a site selective reaction of a cationic polysaccharide derivative with a suitable cationic reagent at a pH from 7.0 to 9.0... | 02/12/1991 |
| 4992539 | High-viscosity cold-water-swellable granular starch A cold-water-swellable granular starch which affords aqueous solutions or dispersions having high-viscosity and/or excellent clarity is provided. In one embodiment, the granular starch is made cold-water swellable by contact with aqueous alcohol, then der... | 02/12/1991 |
| 4990605 | Method of manufacturing alkyloligoglycosides A method of manufacturing alkyloligoglycosides. Alkyloligoglycosides and alkylglycosides having alkyl groups with 8 to 24 carbon atoms, which products are of interest as surface active agents in home economics, and in the cosmetics industry, can be manufa... | 02/05/1991 |
| 4990603 | Sialic acid derivatives and process therefor The present invention relates to sialic acid derivatives. According to the present invention, there is provided sialic acid derivatives having the general formula (I): ##STR1## wherein, R1 represents hydrogen, an acetyl group, a trityl gro... | 02/05/1991 |
| 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 |
| 4987271 | Method for purifying a polyoxyalkylene alcohol A method for purifying a polyoxyalkylene alcohol, which comprises treating with a treating agent consisting essentially of a pH buffer, a polyoxyalkylene alcohol containing a double metal cyanide complex catalyst, synthesized by ring-opening polymerizatio... | 01/22/1991 |
| 4985551 | Process for purification of catalysts from polyols using ion exchange resins A process for the ion exchange of polyols for catalyst removal wherein said catalyst is an alkali hydroxide or alkoxide comprising the sequential steps of: (a) mixing the polyether molecule having a molecular weight of 500-10,000 with water, (b) blending ... | 01/15/1991 |
| 4983731 | Separation and purification of sugar esters The process uses two steps to separate the sugar ester from the crude sugar ester reaction product. The first step entails forming a precipitate of sugar ester from a mixture of alcohol, water and crude sugar ester reaction product. In a second subsequent... | 01/08/1991 |
| 4983727 | Palladium mediated reaction of organic disulfides with mercurated nucleic acid components A method of preparing C-5 substituted nucleotides by reacting a C-5 posit mercurated nucleoside with an alkyl or aryl disulfide in the presence of palladium(II) ion. The resulting new method for attaching linker arms to nucleic acids (DNA,RNA) provides a... | 01/08/1991 |
| 4980463 | Sucrose-6-ester chlorination A process for the chlorination of sucrose-6-esters to produce 6',4,1'-trichlorosucrose-6-esters which comprises the steps of: (a) adding at least seven molar equivalents of an acid chloride to a reaction mixture containing a sucrose-6-ester and a tertiary amid... | 12/25/1990 |
| 4980462 | Antiviral agents A second-step virus binding receptor is found in nature on the surface of animal and plant cells. This receptor is thought to be needed for virus penetration into target cells. The second-step receptor has been found to bind a wide variety of viruses belo... | 12/25/1990 |
| 4978751 | Low-calorie sweeteners of fructosyl oligosaccharides and the food or dietetic products or drinks containing them The present invention concerns the use of fructosyl oligosaccharides as low-calorie sweeteners, and the foods, dietetic products and drinks containing them.... | 12/18/1990 |
| 4977254 | Process for the chlorination of sugars Sugars and partly protected sugar derivatives are chlorinated by reaction of unprotected hydroxyl groups with thionyl chloride to form a persulphite followed by decomposition of the sulphite groups to form chlorosulphites, displacement of the chlorosulphi... | 12/11/1990 |
| 4973680 | Organosiloxane-containing polysaccharides Disclosed are a polysaccharide derivative having the structure: ##STR1## and a polysaccharide graft polymer having the structure: Sacch-O-(G)m -(M)-n, wherein Sacch- is a polysaccharide; m is zero or one; G is the residue of a p... | 11/27/1990 |
| 4973683 | Method of cross-linking a porous polysaccharide gel A porous polysaccharide gel is cross-linked in that (a) the gel is substituted with a monofunctional reagent having at least one functional group that can be activated, (b) the functional group of the reagent is activated, (c) the activated group is reacted, (d) th... | 11/27/1990 |
| 4973682 | Process for the synthesis of polyol fatty acid polyesters The invention pertains to a process for the synthesis of polyol fatty acid polyesters comprising a two-stage transesterification of polyol to polyester, involving a pressure control such that in the first stage the esterification is not allowed to proceed... | 11/27/1990 |
| 4968791 | Process for the preparation of polyol fatty acid esters The present invention relates to a process for the preparation of polyol fatty acid esters, in which fatty acid esters are reacted with a polyol having at least 4 hydroxyl groups, or an ester thereof, wherein the fatty acid soap comprises at least 75% of ... | 11/06/1990 |
| 4962237 | Catalytic process for the preparation of polyols A catalytic process for polymerizing epoxides using active hydrogen initiators forming polyols having low unsaturation levels and high primary hydroxyl levels. The catalysts useful in this process are prepared from catalyst precursors exemplified by hydro... | 10/09/1990 |
| 4960876 | Modified galactomannans and process for their preparation Modified galactomannans are described having a total molar substitution exceeding 0.7 and containing an average of between 0.7 and 4 hydrophilic substituents and between 0.0001 and 0.02 hydrophobic substituents per anhydroglycosidic unit, the molar ratio ... | 10/02/1990 |
| 4959214 | Processes for preparation of aloe products products produced thereby and compositions thereof Processes for producing aloe extracts including the separation of the leaves of the aloe plant into distinct portions. In particular, a first process is described for producing an aloe extract which is substantially free of anthraquinone-rich yellow sap a... | 09/25/1990 |
| 4954621 | Process for producing sucrose fatty acid polyester A process for producing a sucrose fatty acid polyester comprises reacting sucrose with fatty acid lower alcohol ester(s) in a solvent in the presence of an alkaline catalyst, wherein said fatty acid lower alcohol ester(s) are employed in an amount at leas... | 09/04/1990 |
| 4950746 | Process for synthesizing sucrose derivatives by regioselective reaction Sucrose is reacted with a 1,3-di(hydrocarbyloxy)-1,1,3,3-tetra(hydrocarbyl)distannoxane to produce a 1,3-di-(6-O-sucrose)-1,1,3,3-tetra(hydrocarbyl)distannoxane, which can be acylated to produce a sucross-6-ester.... | 08/21/1990 |
| 4923976 | Process for preparing surface-active glycosides and the use of the glycosides in cosmetic, pharmaceutical and household products Surface active glycosides are made by reaction of monose or polyose with an alcohol in the presence of an acid catalyst composition containing acid catalyst and reducing agent; the color properties of the glycosodes so made makes them attractive for use i... | 05/08/1990 |
| 4920214 | Process for producing modified cyclodextrins The present invention is directed to a process for modifying and increasing the water solubility of cyclodextrins in a moderate controlled progressive reaction and in particular to producing derivatives of cyclodextrins in a substantially anhydrous reacti... | 04/24/1990 |
| 4918056 | 2-substituted arabinopyranosyl nucleosides and nucleotides Novel arabinopyranosyl nucleoside derivatives having the heterocyclic moiety and fluorine at the 2' position of the sugar ring (pyranose configuration), which have antitumor, antiviral and antimicrobial properties, are prepared by condensation of a pyrimi... | 04/17/1990 |
| 4918181 | Tertiaryaminoalkyl-hydroxyalkyl ethers of polygalactomannans Dialkylaminoalkyl-hydroxyalkyl ethers of polygalactomannan are useful as thickening agents for aqueous fluids.... | 04/17/1990 |
| 4906745 | Process for making starch ethers A process for the dry etherification of granular starch is disclosed. The process is carried out in the presence of an alkaline catalyst and water, and in the presence of an organic acid in the solid state, which organic acid has a solubility at 25° C. r... | 03/06/1990 |
| 4902834 | Process for preparing capped polyoxyalkylene block polyethers A process is disclosed for the preparation of capped polyoxyalkylene block polyethers with exceptionally low hydroxyl numbers and correspondingly high capping efficiency. This improvement is accomplished through the use of cesium hydroxide catalysis durin... | 02/20/1990 |
| 4900816 | Hemoglobin complexes There is described a water soluble compound having a molecular weight of from about 70,000 to about 2,000,000 and having the formula I, B--X--(PS)--X--(H) I in which PS is a polysaccharide of molecular weight from about 2,000... | 02/13/1990 |
| 4898934 | Process for manufacturing light-colored alkyloligogycosides and alkylglycosides A process for manufacturing alkyloligoglycosides. Alkyloligoglycosides nand alkylglycosides having alkyl groups with 8 to 24 carbon atoms, which are of interest in home economics and in the cosmetics industry, can be manufactured by glycosidation and tran... | 02/06/1990 |
| 4874780 | Anticancer compounds Deuterated aromatic aldehydes of the formula: ##STR1## where Ar is substituted phenyl, and derivatives thereof represented by the formula: ##STR2## where Ar is substituted or unsubstituted phenyl, and X1 and X2 are sub... | 10/17/1989 |
| 4874852 | Glycosidation catalust and process for preparing glycoside derivatives Disclosed are a glycosidation catalyst comprising at least one of heteropoly acids represented by the formula Ha Xp Mq Or .multidot.bH2 O wherein X is P, As, Si or Ge, M is at least one species selected from th... | 10/17/1989 |
| 4870167 | Hydrophobically modified non-ionic polygalactomannan ethers Alkyl ethers of polygalactomannans wherein the alkyl groups contain 1 to 4 carbon atoms are further modified with long chain aliphatic epoxides wherein the long chains contain 8 to about 28 carbon atoms. The resulting derivatized polygalactomannans are pa... | 09/26/1989 |
| 4859769 | Antiviral agents A second-step virus binding receptor is found in nature on the surface of animal and plant cells. This receptor is thought to be needed for virus penetration into target cells. The second-step receptor has been found to bind a wide variety of viruses belo... | 08/22/1989 |
| 4847368 | Method of manufacturing alkyloligoglycosides A method of manufacturing alkyloligoglycosides. Alkyloligoglycosides and alkylglycosides having alkyl groups with 8 to 24 carbon atoms, which are of interest in home economics and in the cosmetics industry, can be manufactured by glycosidation and transgl... | 07/11/1989 |
| 4834903 | Alkylene oxide adducts of glycoside surfactants and detergent compositions containing same Remarkably good surfactancy characteristics are exhibited by alkylene oxide (e.g., ethylene oxide, propylene oxide, etc.) adducts of relatively low degree of polymerication, (D.P.), long chain glycoside compositions of the sort which are predominantly com... | 05/30/1989 |
| 4826965 | Metal complexes containing optically active sugar ligands, a process for their preparation and their use as chiral reactants for synthesis of alcohols and amines Compounds of the forulae I and Ia ##STR1## in which R1 is a group which can be transferred to carbonyl or imine compounds, for example alkyl, allyl, vinyl or the radical of an enol or enamine, R2 is, for example, cyclopentadieny... | 05/02/1989 |
