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| Number | Title | Issue Date |
| 7247722 | Polysaccharide aldehydes prepared by oxidation method and used as strength additives in papermaking Polysaccharide aldehydes are prepared using selective oxidation involving the use of nitroxyl radical mediated aqueous oxidation with a limited amount of oxidant and defined reaction conditions. These polysaccharide aldehyde derivatives having maximum effective alde... | 07/24/2007 |
| 7135557 | Hypochlorite free method for preparation of stable carboxylated carbohydrate products A method of making a carboxylated carbohydrate is disclosed, cellulose being a preferred carbohydrate material. Carboxylated cellulose fibers can be produced whose fiber strength and degree of polymerization is not significantly sacrificed. The method involves the u... | 11/14/2006 |
| 7109325 | Hypochlorite free method for preparation of stable carboxylated carbohydrate products A method of making a carboxylated carbohydrate is disclosed, cellulose being a preferred carbohydrate material. Carboxylated cellulose fibers can be produced whose fiber strength and degree of polymerization is not significantly sacrificed. The method involves the u... | 09/19/2006 |
| 6919447 | Hypochlorite free method for preparation of stable carboxylated carbohydrate products A method of making a carboxylated carbohydrate is disclosed, cellulose being a preferred carbohydrate material. Carboxylated cellulose fibers can be produced whose fiber strength and degree of polymerization is not significantly sacrificed. The method involves the u... | 07/19/2005 |
| 6884885 | Production of cyclodextrin complexes The process entails increasing the concentration of cyclodextrin to 15% (w/w) and above to form complexes through a precipitation process in order to increase the yield of complexes, increase the amount of guest complexed, and decrease the particle size of the compl... | 04/26/2005 |
| 6852852 | Method of producing regioselectively substituted esters of oligo- and polysaccharides A method of producing a cellueose ether that is predominantly substituted in the C2 position of the anhydroglucose unit of the cellulose is described. The regioselectively substituted saccharide ester produced according to the method of the present invention is sele... | 02/08/2005 |
| 6627752 | Lactide modified starch derivatives and the process of preparation thereof Starch lactide derivatives and the preparation of such derivatives wherein starch is reacted with lactide in an aqueous caustic media. Another embodiment involves the extrusion of the starch lactide derivatives to form starch based foam products having in... | 09/30/2003 |
| 6605715 | Process for the preparation of a starch ester Process for the preparation of a starch ester, in particular a starch acetate, wherein a starch-based feedstock is reacted with an organic carboxylic acid anhydride in the presence of a catalyst. The reaction of the starch-based feedstock and the anhydrid... | 08/12/2003 |
| 6596860 | Adhesive composition The invention relates to an adhesive composition comprising a derivative of a starch, which comprises at least 95 wt. % of amylopectin, based on dry substance of the starch, wherein the derivative is obtainable by cross-linking, etherification, esterifica... | 07/22/2003 |
| 6489468 | Regioselectively substituted esters of oligo- and polysaccharides and a method of producing them A regioselectively substituted member selected from the group consisting of oligo-saccharide ester and polysaccharide ester is disclosed. The ester has a partial average degree of substitution AS at the C2 position of its anhydroglucose unit of at least 9... | 12/03/2002 |
| 6387853 | Derivatization of polymers and well treatments using the same Polymers are derivatized and then may be introduced into a wellbore, such as in a hydraulic fracturing treatment. A polymer may be a guar powder that is mixed with a organic solvent and derivatized using a derivatizing agent, such as sodium chloroacetate.... | 05/14/2002 |
| 6369215 | Hydroxyalkylated starch ester and preparation and use thereof The invention concerns a hydroxypropyl starch ester (HPS ester), compositions containing it, and a process for the preparation thereof. According to the invention, the molar substitution in the HPS ester is 2 at the most and the substitution degree in the... | 04/09/2002 |
| 6222031 | Process for preparing water-soluble tricarboxypolysaccharide Disclosed is a process for preparing a water-soluble tricarboxypolysaccharide which includes the step of oxidizing an -bonding type polysaccharide with a ruthenium compound and an oxidizing agent. The water-soluble tricarboxypolysaccharide, having ... | 04/24/2001 |
| 6096524 | Chemically derived maltodextrins High solids maltodextrin syrups, some of which are useful as the base for remoistenable adhesives, are prepared by a high solids alpha amylase enzyme conversion process. They are characterized by their high solids content (at least 55 wt. %) and light col... | 08/01/2000 |
| 6063914 | Method of producing swellable, non-aging starch maleates, biologically degradable starch maleates as well as use The aging of swellable starch maleates is reduced by reacting with one or more singly and/or multiply functional nucleophiles as in a Michael condensation reaction. Mixtures of mercaptoethanol and 1,2-bis-(2-mercaptoethoxy)-ethane or mixtures of sodium bi... | 05/16/2000 |
| 6037466 | Method for preparing hydrophobic starch derivatives A method for preparing hydrophobic starch derivatives wherein starch and an anhydride are reacted in a slurry with the anhydride reagent being added to the slurry in pre-emulsified form to provide a significantly faster and more efficient reaction.... | 03/14/2000 |
| 6011149 | Photochemically cross-linked polysaccharide derivatives as supports for the chromatographic separation of enantiomers The present invention relates to photochemically cross-linked derivatives of general formulae (IA) and (IB), wherein R is a polysaccharide radical in which the OH groups have been esterified as OR' groups or converted into a carbamate (urethane), R1 | 01/04/2000 |
| 6008345 | Process for making polycarboxylic acid derived from polysaccharide composed of anhydrous glucose units and salts thereof There is described a polycarboxylic acid or a salt thereof obtained by oxidation of a polysaccharide containing an anhydrous glucose as a constituent unit, wherein the carboxyl group content thereof is high and the weight average molecular weight thereof ... | 12/28/1999 |
| 6001473 | Starch ester release coatings Release coating compositions comprising: a) a starch ester release agent having an ester component of 2 to 8 carbon atoms and a degree of substitution (DS) of from 1.0 to 2.2; b) a hydrophobic plasticizer; and c) water.... | 12/14/1999 |
| 5935826 | Glucoamylase converted starch derivatives and their use as emulsifying and encapsulating agents The present invention relates to modified starches which are prepared by enzymatic hydrolysis of a starch molecule using glucoamylase after the preparation of a starch derivative containing a hydrophobic group or both a hydrophobic and a hydrophilic group... | 08/10/1999 |
| 5869647 | Method of preparing biodegradable modified-starch moldable products and films A method of preparing biodegradable moldable products and films includes the steps of preparing biodegradable, hydrophobic, modified starch, and forming a thermoplastic product, comprising the modified starch, and optionally a miscible and biodegradable p... | 02/09/1999 |
| 5840883 | Dextrin ester of fatty acids and use thereof Disclosed are a dextrin ester of fatty acids in which dextrin has an average saccharide polymerization degree of 3 to 150, the fatty acids comprise a straight chain fatty acid having 8 to 22 carbon atoms and at least one fatty acid selected from the group... | 11/24/1998 |
| 5797984 | Water resistant starch based foams Biodegradable, expanded starch products are provided having increased resistance to water and high humidity and comprising low DS hydrophobic starch derivatives having the formula: ##STR1## where ST is starch, R is a dimethylene group, R' is a substi... | 08/25/1998 |
| 5789570 | Swellable starch ester and methods of its production and use A biodegradable, swellable starch ester, containing more than 50% by weight of water-insoluble components and having a retention capacity of >500% for 0.9% (by weight) aqueous NaCl solution, and methods of its production and use.... | 08/04/1998 |
| 5731430 | Cationic polysaccharides esterified by a discarloxylic acid anhydride substituted with a branched carbon chain The invention relates to a new composition for sizing paper and board, containing a cationic polysaccharide esterified by a dicarboxylic acid anhydride, characterized in that the said dicarboxylic acid anhydride is substituted with a carbon chain, saturat... | 03/24/1998 |
| 5720978 | Encapsulated products Improved encapsulated products comprising a matrix of a starch hydrolyzate acid ester having a water-insoluble material encapsulated therein. In preferred embodiments, a reducing sugar is employed in the encapsulating process and the starch hydrolyzate es... | 02/24/1998 |
| 5719214 | Polyester-grafted starch-polymer alloy A polyester-grafted starch-polymer alloy is capable of imparting practical flexibility and toughness to moldings with no or only a little plasticizer. The polyester-grafted starch-polymer alloy comprises a blend of a polyester-grafted starch (a starch whi... | 02/17/1998 |
| 5717087 | Thermoplastic and biodegradable polysaccharide esters/polysaccharide ether esters containing maleic acid addition product groups The present invention relates to thermoplastic and biodegradable polysaccharide esters/polysaccharide ether esters, which are characterised in that they can be represented by the general structure ##STR1## wherein Polysaccharide-O represents the subs... | 02/10/1998 |
| 5714540 | Esterified, polyvinyl ester-grafted starch A starch derivative which, when incorporated with no or only a little plasticizer, yields moldings having good flexibility, toughness, and water-relating properties for practical use comprises an esterified, polyvinyl ester-grafted starch derivative which... | 02/03/1998 |
| 5710269 | Method of making starch acetate using an acid catalyst Methods of synthesizing starch acetate containing at least 20% high molecular weight carbohydrates using a MSA catalyst alone, or in combination with a co-catalyst promoting cross-linking, such a phosphoric acid, are described. The MSA is desirably added ... | 01/20/1998 |
| 5703226 | Method for acylation of starch A process for the uniform acylation of starch comprising preconditioning the starch with a base for at least six hours, adjusting the pH to a suitable range for acylation, adding the desired acylation agent and isolating the acylated starch. A continuous ... | 12/30/1997 |
| 5667803 | Starch acetate composition with modifiable properties, method for preparation and usage thereof The present invention is related to a novel type of composition with modifiable properties and suitable for controlled release of active ingredients in industrial use. The composition contains an active ingredient and starch acetate in the form of a compa... | 09/16/1997 |
| 5656292 | Composition for pH dependent controlled release of active ingredients and methods for producing it The present invention is related to a composition for pH dependent or pH regulated controlled release of active ingredients especially drugs. The composition consists of a compactible mixture of the active ingredient and starch molecules substituted with ... | 08/12/1997 |
| 5635609 | Particles prepared by transacylation reaction between an esterified polysaccharide and a polyamine, methods of preparation therefor and compositions containing same Particles, preparation methods therefor, and compositions containing same. The particles include at least one esterified polysaccharide and at least one polyamine, as well as at least one gellable polysaccharide when neither the esterified polysaccharide ... | 06/03/1997 |
| 5633368 | Partially acylated ଲ-cyclodextrins Partially acylated cyclodextrins of the formula I ##STR1## where R denotes hydrogen or R1, wherein R1 can be identical or different and denotes acetyl, propionyl, butyryl, 2-alkoxyacetyl, 2-chloroacetyl, 2-fluoroacetyl, 2-N-acetylaminoacetyl, methacr... | 05/27/1997 |
| 5629416 | Method of preparing crosslinked starch esters A process for preparing biodegradable, high humidity resistant crosslinked starch esters comprising reacting starch with monocarboxylic acid anhydride in a caustic catalyzed system to a DS of about 1.3 to 2.7 and crosslinking the starch ester in the same ... | 05/13/1997 |
| 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 antioxidant grafted crosslinked polysaccharides as a treatment... | 03/18/1997 |
| 5587412 | Esterified starch composition According to the present invention there is provided a composition as obtained from a melt comprising esterified starch, preferably having an amylose content of at least about 50% by weight with respect to that of the starch, and being substituted to a de... | 12/24/1996 |
| 5521292 | Compositions comprising neutralized polysaccharide derivatives The present invention provides: (1) a polysaccharide derivative having hydrophilic functional groups and nitrate groups per one repeating unit in the following range: 0.2ࣘXࣘ1.5, 0.4ࣘYࣘ2.2, X+Y | 05/28/1996 |
| 5514790 | Starch intermediate product, a process for producing a starch intermediate product, and a process for further processing of a starch intermediate product A process for producing a starch intermediate product in which the reactive hydroxy groups are activated by swelling and disintegrating starch with dilute aqueous-alkali lye, precipitating the disintegrated starch from an aqueous-alkali solution by adding... | 05/07/1996 |
