Esters Patents (Class 536/107)
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Patent number: 9617223Abstract: The present invention provides a base generator having the structure of formula (1): wherein R1, R2, R3, R4, R5, and Y{circle around (?)} are defined as in the specification. The base generator of the present invention can be used for imidization of a polyimide precursor, promoting crosslinking of epoxy monomers, or crosslinking of polyurethane or polyurea.Type: GrantFiled: December 21, 2012Date of Patent: April 11, 2017Assignee: Eternal Materials Co., Ltd.Inventors: Pi-Chen Cheng, Meng-Yen Chou, Chuan Zong Lee, Chung-Jen Wu
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Patent number: 8895533Abstract: The invention relates to a compound, comprising a) a first starch derivative selected from the group consisting of hydroxyalkyl starch, carboxyl alkyl starch, ester starch and arbitrary mixtures thereof, wherein the starch derivative has a mean relative molar mass Mw1 and a degree of molar substitution MS1, and b) a second starch derivative selected from the group consisting of hydroxyalkyl starch, carboxyl alkyl starch, ester starch and arbitrary mixtures thereof, having a mean relative molar mass Mw2 and a degree of molar substitution MS2, characterized in that Mw1 is greater than Mw2 (Mw1>Mw2) and MS2 is greater than MS1 (MS2>MS1).Type: GrantFiled: December 6, 2010Date of Patent: November 25, 2014Assignee: B. Braun Melsungen AGInventors: Bernd Meier, Iris Theresia Jankowiak-Meier, Nele Meier, Clara Meier
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Patent number: 8853386Abstract: Starch esters are made by: reacting a starch with an esterifying agent in the presence of a catalyst in a solvent for the starch ester, the esterifying agent including a mixture of at least two esterifying agents; or pre-treating a starch in a bath being free of an esterifying agent, and reacting the pre-treated starch with an esterifying agent in the presence of a catalyst. Articles are made by blending cellulose ester and starch ester, may be cross-linked, and may include internal plasticizers.Type: GrantFiled: December 18, 2006Date of Patent: October 7, 2014Assignee: Celanese Acetate LLCInventors: Linfu Wang, Henry P. Stogner, Billy C. Batson
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Publication number: 20130296548Abstract: Surface-treated carboxyalkylated polysaccharides comprising a biobased content of at least 82% are described herein. The surface-treated carboxyalkylated polysaccharides comprise a CRC of at least 18 g/g, a FSC of at least 26 g/g, and an AUL at 0.7 psi of at least 14 g/g. Processes for the manufacture of surface-treated carboxyalkylated polysaccharides are also described herein.Type: ApplicationFiled: May 23, 2013Publication date: November 7, 2013Inventors: Danick Godin, George Koutlakis, Nicolas Nourry, Oscar Suarez-Hernandez, Andre Laforest, Isabelle Bolduc, Shoujia Dong, Caroline Lavergne
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Publication number: 20130251996Abstract: A modified starch material is arranged for biocompatible hemostasis, biocompatible adhesion prevention, tissue healing promotion, absorbable surgical wound sealing and tissue bonding, when applied as a biocompatible modified starch to the tissue of animals. The modified starch material produces hemostasis, reduces bleeding of the wound, extravasation of blood and tissue exudation, preserves the wound surface or the wound in relative wetness or dryness, inhibits the growth of bacteria and inflammatory response, minimizes tissue inflammation, and relieves patient pain. Any excess modified starch not involved in hemostatic activity is readily dissolved and rinsed away through saline irrigation during operation. After treatment of surgical wounds, combat wounds, trauma and emergency wounds, the modified starch hemostatic material is rapidly absorbed by the body without the complications associated with gauze and bandage removal.Type: ApplicationFiled: May 14, 2013Publication date: September 26, 2013Inventors: Xin JI, Cheng Xing, Xueshen Shi, Jianping Chen
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Patent number: 8466277Abstract: The invention relates to a method for coupling low-molecular weight substances to a starch-derived modified polysaccharide. The binding interaction between the modified polysaccharide and the low-molecular weight substance is based on a covalent bond which is the result of a coupling reaction between the terminal aldehyde group or a functional group of the modified polysaccharide molecule resulting from the chemical reaction of this aldehyde group and a functional group of the low-molecular weight substance which reacts with this aldehyde group or with the resulting functional group of the polysaccharide molecule. The bond directly resulting from the coupling reaction can be optionally modified by a further reaction to the aforementioned covalent bond. The invention further relates to pharmaceutical compositions that comprise conjugates formed in this coupling process and to the use of said conjugates and compositions for the prophylaxis or therapy of the human or animal body.Type: GrantFiled: February 28, 2003Date of Patent: June 18, 2013Assignee: Fresenius Kabi Deutschland GmbHInventors: Michele Orlando, Jurgen Hemberger, Klaus Sommermeyer, Wolfram Eichner, Sven Frie, Katharina Lutterbeck, Cornelius Jungheinrich, Roland Scharpf
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Patent number: 8444819Abstract: There are disclosed cationic crosslinked waxy starch products having a Brookfield viscosity of about 700 cps to about 2500 cps and a method for preparing the starch products. Also disclosed is the use of the cationic crosslinked waxy starch products having a Brookfield viscosity of about 700 cps to about 2500 cps in the production of paper products.Type: GrantFiled: June 16, 2004Date of Patent: May 21, 2013Assignee: Cargill, IncorporatedInventors: Kevin R. Anderson, David E. Garlie, James D. Steinke
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Patent number: 8277554Abstract: The invention relates to a hot melt adhesive, comprising at least one polysaccharide ester gained by a reaction of a polysaccharide with an imidazolide in melted imidazole. The invention relates, further, to a process for producing the hot melt adhesive, in which imidazole is melted, and an acid chloride and/or an acid anhydride and/or a lactone is reacted in and with the melted imidazole to form an imidazolide, whereby at least one polysaccharide is added to the melted imidazole, whereby the polysaccharide is reacted with the imidazolide to form a polysaccharide ester.Type: GrantFiled: November 16, 2010Date of Patent: October 2, 2012Assignees: Innovent e.V., Friedrich-Schiller-UniversitatInventors: Bernd Grünler, Andreas Heft, Marion Homuth, Thomas Heinze, Tim Liebert
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Publication number: 20120172586Abstract: The present invention relates to a process for preparing a chemically modified polysaccharide, preferably starch, by using a microdevice. It further relates to the use of a microdevice for the chemical reactions of polysaccharides in heterogeneous mixtures. Examples of chemical modifications are acetylation, oxidation, hydroxypropylation and the like.Type: ApplicationFiled: August 19, 2010Publication date: July 5, 2012Applicant: CARGILL INCORPORATEDInventors: Marc Charles Florent Berckmans, Rita Maria Delrue, Bruno Frédéric Stengel
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Publication number: 20120088909Abstract: Process for esterifying, etherifying or silylating polysaccharide or derivatives thereof by means of an esterifying reagent, etherifying reagent or silylating reagent in the presence of an ionic liquid, in which (a) the process is carried out under heterogeneous reaction conditions, and (b) the amount of ionic liquid is 2% to 25% by weight, based on the polysaccharide or derivatives thereof.Type: ApplicationFiled: March 2, 2010Publication date: April 12, 2012Applicant: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung E.V.Inventors: André Lehmann, Bert Volkert
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Patent number: 8119792Abstract: The invention relates to novel transglycosylation products and their preparation. The transglycosylation products according to the invention are prepared from starch derivatives, such as esters or ethers of starch. The products are obtained by reacting a starch derivative with an alcohol in the presence of an acid catalyst. The forming product is separated by precipitation or by removing any unreacted alcohol by evaporation. In the products according to the invention the good properties of starch derivatives, such as the excellent water resistance of esters, are combined with the versatility of transglycoside products. The products can be used as adhesives, in which case they are formulated, for example as hot-melt adhesives, and as comonomers, prepolymers or macroinitiators in the preparation of polymers.Type: GrantFiled: February 17, 2003Date of Patent: February 21, 2012Assignee: Valtion Teknillinen TutkimuskeskusInventors: Soili Peltonen, Hannu Mikkonen, Thomas Gädda
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Publication number: 20110180760Abstract: The invention relates to a hot melt adhesive, comprising at least one polysaccharide ester gained by a reaction of a polysaccharide with an imidazolide in melted imidazole. The invention relates, further, to a process for producing the hot melt adhesive, in which imidazole is melted, and an acid chloride and/or an acid anhydride and/or a lactone is reacted in and with the melted imidazole to form an imidazolide, whereby at least one polysaccharide is added to the melted imidazole, whereby the polysaccharide is reacted with the imidazolide to form a polysaccharide ester.Type: ApplicationFiled: November 16, 2010Publication date: July 28, 2011Inventors: Bernd Grünler, Andreas Heft, Marion Homuth, Thomas Heinze, Tim Liebert
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Patent number: 7829600Abstract: The present invention relates to a starch emulsifier product prepared by sufficiently solubilizing a starch and subsequently sufficiently derivatizing the sufficiently solubilized starch product, in one embodiment by reacting the sufficiently solubilized starch with an alkenyl succinic anhydride. Such starch emulsifier products are useful as emulsifying and/or encapsulating agents, particularly in systems where high load and retention of the active ingredient, low surface oil exposure, and excellent oxidation resistance is desired.Type: GrantFiled: January 14, 2010Date of Patent: November 9, 2010Assignee: Brunob II B.V.Inventors: Ralph Trksak, Afaf Makarious
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Patent number: 7683167Abstract: The present invention provides a separating agent for enantiomeric isomers exhibiting high separation power. That is, the present invention provides a separating agent for enantiomeric isomers including, as an active ingredient, a polysaccharide derivative having at least part of hydrogen atoms of hydroxyl groups of a polysaccharide such as cellulose or amylose substituted by at least one of atomic groups represented by the following general formulae (I) and (II): (in the formulae, R represents a substituted or unsubstituted aromatic group, or a linear, branched, or cyclic aliphatic group).Type: GrantFiled: April 22, 2004Date of Patent: March 23, 2010Assignee: Daicel Chemical Industries, Ltd.Inventors: Yoshio Okamoto, Chiyo Yamamoto
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Publication number: 20100029928Abstract: The invention relates to an emulsifier, a method for preparing said emulsifier, and to its use in various applications, primarily food and cosmetic applications. The invention also relates to the use of said emulsifier for the creation of an elastic, gelled foam. An emulsifier according to the invention is based on a starch which is enzymatically converted, using a specific type of enzyme, and modified in a specific esterification reaction.Type: ApplicationFiled: July 10, 2006Publication date: February 4, 2010Inventors: Hendrik Jan De Vries, Cindy Semeijn, Pieter Lykle Buwalda
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Publication number: 20090255441Abstract: A material which is suitable as filler or coating pigment for a fibrous web and a method for manufacturing thereof. According to the method, a feed comprising organic polymer material is cooled to at least approximately ?50° C., after which it is refined in a jet refiner to a desired particle size. The present invention generates uniform pigment particles which comprise, for instance, starch esters, and which particles have a porous surface structure, in which case they are suitable for instance as coating pigments and fillers for offset and ink-jet papers.Type: ApplicationFiled: August 17, 2006Publication date: October 15, 2009Applicant: Valtion Teknillinen TutkimuskeskusInventors: Hannu Mikkonen, Mauno Miettinen, Kirsi Kataja, Saija Luukkanen, Soili Peltonen, Pia Qvintus-Leino
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Publication number: 20080300400Abstract: A starch thinning and etherification process is provided comprising the steps of (a) mixing a starch substrate with a thinning agent, an alkalizing agent and an etherification agent; (b) drying the mixture of step (a); and (c) allowing the dried mixture to react with the etherification agent, wherein: the thinning agent consists of one or more hypochlorites; step (a) is carried out at an alkaline pH and does not involve any artificial heating; and step (b) is carried out before the mixture of step (a) reaches the starch substrate's gelatinisation temperature.Type: ApplicationFiled: December 21, 2006Publication date: December 4, 2008Inventors: Marc Charles Florent Berckmans, Dogan Sahin Sivasligil
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Publication number: 20080146792Abstract: Starch esters are made by: reacting a starch with an esterifying agent in the presence of a catalyst in a solvent for the starch ester, the esterifying agent including a mixture of at least two esterifying agents; or pre-treating a starch in a bath being free of an esterifying agent, and reacting the pre-treated starch with an esterifying agent in the presence of a catalyst. Articles are made by blending cellulose ester and starch ester, may be cross-linked, and may include internal plasticizers.Type: ApplicationFiled: December 18, 2006Publication date: June 19, 2008Inventors: Linfu Wang, Henry P. Stogner, Billy C. Batson
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Patent number: 7244839Abstract: The present invention is directed to a starch comprising a novel percentage of actual amylose. A grain comprising the starch is also embodied by the present invention. The present invention is also directed to a plant comprising the novel starch.Type: GrantFiled: March 26, 2003Date of Patent: July 17, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard W. Pearlstein, Karen E. Broglie, Christopher F. Hines
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Patent number: 7157573Abstract: The invention relates to a process for preparing a hydrophobic starch, comprising etherification, esterification or amidation of a root or tuber starch comprising at least 95 wt. % of amylopectin, based on dry substance of the starch, or a derivative thereof, with a substituent comprising an alkyl chain having from 4–24 carbon atoms. The invention further relates to a hydrophobic starch obtainable by said process.Type: GrantFiled: August 17, 2005Date of Patent: January 2, 2007Assignee: Cooperatie Avebe U.A.Inventors: Pieter Lykle Buwalda, Ronald Peter W. Kesselmans, Augustinus Arnoldus M. Maas, Hylke Hotze Simonides
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Patent number: 7064113Abstract: A resin composition, which comprises a biodegradable polymer and a biodegradable liquid crystalline polymer. The resin composition is useful for producing molded resin articles having good recyclability.Type: GrantFiled: March 13, 2002Date of Patent: June 20, 2006Assignee: Canon Kabushiki KaishaInventor: Hiroshi Maehara
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Patent number: 7015200Abstract: The present invention provides compositions comprising at least one GHB moiety bonded to at least one physiologically compatible carrier molecule. The compositions can enhance the uptake of the drug, deliver effective therapeutic doses in a time-delayed fashion, or can target specific organs.Type: GrantFiled: September 21, 2001Date of Patent: March 21, 2006Assignee: Orphan Medical, Inc.Inventors: Mortimer Mamelak, William C. Houghton, Dayton T. Reardan, Brian L. Miller
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Patent number: 6900295Abstract: The present invention is an enzyme-decomposable polymer compound having recyclable decomposition products. The polymeric compound is a glycopolymer of a saccharide having only glucopyranose rings and a second component. In addition, the glycopolymer may contain molecular chains having at least one type of repeating unit, which chains are crosslinked by a saccharide having only glucopyranose rings.Type: GrantFiled: November 13, 2001Date of Patent: May 31, 2005Assignee: Canon Kabushiki KaishaInventors: Hiroyoshi Kishi, Toyoko Kobayashi, Kiyoshi Sakai, Norio Kaneko, Kazumi Tanaka, Chieko Mihara, Toshihiko Takeda, Yoshihiko Kikuchi
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Patent number: 6872820Abstract: Finely divided polysacharide derivatives are described. The finely divided polysacharide derivatives are prepared by a process comprising: a) forming an aqueous composition comprising a polysaccharide derivative and water, in which the polysaccharide derivative is soaked or dissolved; b) converting the polysaccharide derivative of the aqueous composition into finely divided solid particles by, (i) contacting the aqueous composition with superheated water vapor in a dryer-pulverizer; or (ii) causing the polysaccharide derivative of the aqueous composition to flocculate; and c) optionally drying the finely divided solid particles of step b). The primary structures of the polysaccharide starting material are largely removed, and the product has a shape factor of less than 5 and greater than or equal to 1.Type: GrantFiled: October 1, 2001Date of Patent: March 29, 2005Assignee: Wolff Walsrode AGInventors: Gunter Weber, Detmar Redeker, Bernd Klinksiek, Jürgen Hinderer, Benno Ulfik
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Patent number: 6852852Abstract: 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 selected from the group consisting of oligo-saccharide ester and polysaccharide ester, having a partial average degree of substitution (AS) at the C2 position of its anhydroglucose unit of at least 90% relative to the total AS. Also described is a blood plasma expander comprising the regioselectively substituted ester.Type: GrantFiled: October 17, 2002Date of Patent: February 8, 2005Assignee: Wolff Walsrode AGInventors: Erik-Andreas Klohr, Wolfgang Koch, Dieter Klemm, René Dicke
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Patent number: 6828018Abstract: This article is a self-wound, water dissolvable tape. The tape is substantially removable with water, and may be wound onto a spool without an interleaving layer of release coated material. The tape comprises a water dissolvable, continuous phase substrate having a first surface and a second surface, a water dissovable, continuous phase adhesive layer on the first surface of the substrate, and a water dissolvable, continuous phase abherent layer on the second surface of the substrate.Type: GrantFiled: December 6, 2001Date of Patent: December 7, 2004Assignee: CMC Daymark CorporationInventors: Mark C. Waterbury, Jeffrey Palmer
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Publication number: 20040068108Abstract: Synthetic polysaccharides are disclosed containing 8-24 monosaccharide units made up of a concatenation of disaccharides consisting of a uronic acid and a hexose, wherein the hydroxyl groups of the polysaccharides are etherified with a C1-6 alkyl group or esterified in the form of a sulpho group, each disaccharide being at least monoetherified; and salts thereof, are disclosed.Type: ApplicationFiled: October 2, 2003Publication date: April 8, 2004Inventors: Philippe Duchaussoy, Jean Marc Herbert, Guy Jaurand, Maurice Petitou, Constant Van Boeckel
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Publication number: 20040009140Abstract: This invention relates to skin pore tighteners each of which comprises, as an active ingredient, a compound represented by the following formula:Type: ApplicationFiled: April 14, 2003Publication date: January 15, 2004Inventors: Takafumi Nishijima, Shinya Amano, Tsutomu Fujimura
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Patent number: 6670470Abstract: The present invention relates to a process for the preparation of a stable, chlorine free modified starch which is useful in paper coating and sizing. In the process, starch is degraded by catalyzed hydrogen peroxide oxydation, and stabilized by acetyl esterification, combined with crosslinking of the starch.Type: GrantFiled: March 10, 2000Date of Patent: December 30, 2003Assignee: Raisio Chemicals Ltd.Inventors: Hannu Ketola, Peggy Hagberg
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Patent number: 6632940Abstract: The invention concerns a method for preparing Laminaribiose comprising a step for glycoside binding between a donor and an acceptor of glycosyl. The invention is characterized in that the glycosyl donor is in pyranose form and corresponds to formula (II); the glycosyl acceptor is in furanose form and corresponds to formula (III); said binding step is performed in solution in an anhydrous organic solvent, at a temperature ranging between −80° C. and 40° C., for a time interval ranging between 1 minute and 8 hours, in the presence of a suitable promoter.Type: GrantFiled: October 13, 2000Date of Patent: October 14, 2003Assignee: Laboratoires GoemarInventors: Jean-Claude Yvin, Frank Jamois, Vincent Ferrieres, Daniel Plusquellec
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Publication number: 20030162745Abstract: 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 90% relative to the total AS. Also disclosed is a method of producing the regioselectively substituted ester. The method entails reacting in the presence of a catalyst a dissolved or a highly swollen oligo-saccharide or polysaccharide with an esterification reagent.Type: ApplicationFiled: October 17, 2002Publication date: August 28, 2003Inventors: Erik-Andreas Klohr, Wolfgang Koch, Dieter Klemm, Rene Dicke
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Patent number: 6605715Abstract: 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 anhydride is performed at an excess pressure of about 0.1 to 50 bar in an essentially anhydrous medium containing 10% by weight of water at the most. As catalyst, sodium acetate, sodium hydroxide or sulphuric acid is used, and as the reaction medium, acetic acid or excess acetanhydride is used. By means of the invention, the duration of the esterification reaction can be significantly shortened, the separation of the product can be facilitated, and the recirculation of the waste solutions can be rendered more efficient.Type: GrantFiled: August 18, 1999Date of Patent: August 12, 2003Assignee: Valtion Teknillinen TutkimuskeskusInventors: Geert Lammers, Pertti Tiitola, Jani Vuorenpää
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Patent number: 6596860Abstract: 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, esterification or a combination thereof, of the starch. The invention further relates to a process for preparing the adhesive composition and to the use thereof for adhering wallpaper or billposter to a substrate.Type: GrantFiled: March 12, 2001Date of Patent: July 22, 2003Assignee: Cooperatieve Verkoop-en Productievereniging van Aardappelmeel en Derivaten AVEBE B.A.Inventors: Ronald Peter W. Kesselmans, Ido Pieter Bleeker, Willem Kamminga
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Publication number: 20030109698Abstract: The present invention relates to a starch ester having short- and long-chain acyl groups wherein hydrogens in reactive hydroxyl groups in the same starch molecule have been replaced by C2-4 short-chain acyl groups and C6-18 long-chain acyl groups. The degree of substitution by the short- and long-chain acyl groups are regulated so as to make the starch ester thermo-plasticized and moldable even in the absence of a plasticizer. Accordingly, the starch ester of the present invention can be used as a biodegradable thermoplastic plastic material which can be thermo-plasticized in the absence of a plasticizer.Type: ApplicationFiled: December 6, 2002Publication date: June 12, 2003Inventor: Hideyuki Tanaka
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Publication number: 20030045706Abstract: The invention concerns a novel method for preparing by chemical process functionalised &bgr;-(1,3)-glucan derivatives, enabling to obtain free oligosaccharides or comprising specific groups such as, for instance, sulphate, phosphate, methyl, in predetermined positions. Said method consists in reacting a glycosyl donor of formula (Ia) or (Ib) with a glycosyl scavenger of formula (II), as defined in the claims. The invention is useful for preparing biologically active principles for use in the agricultural, cosmetic or pharmaceutical field.Type: ApplicationFiled: August 1, 2002Publication date: March 6, 2003Inventors: Jean-Claude Yvin, Frank Jamois, Vincent Ferrieres, Daniel Plusquellec
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Patent number: 6528644Abstract: A product of acetoacetylated saccharide and the process of making such a product. The process is enzymatic where an enzyme is used as a catalyst for the reaction. The enzymatic process provides better yields and milder process conditions compared to other chemical synthesis process without any enzyme.Type: GrantFiled: September 26, 2001Date of Patent: March 4, 2003Assignee: Hercules IncorporatedInventors: Peng George Wang, Wenhua Xie, Lei Qiao, Robert G. Nickol, Huai N. Cheng
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Patent number: 6495679Abstract: The present invention relates to a starch ester having short- and long-chain acyl groups wherein hydrogens in reactive hydroxyl groups in the same starch molecule have been replaced by C2-4 short-chain acyl groups and C6-18 long-chain acyl groups. The degree of substitution by the short- and long-chain acyl groups are regulated so as to make the starch ester thermo-plasticized and moldable even in the absence of a plasticizer. Accordingly, the starch ester of the present invention can be used as a biodegradable thermoplastic plastic material which can be thermo-plasticized in the absence of a plasticizer.Type: GrantFiled: October 16, 2000Date of Patent: December 17, 2002Assignee: Japan Corn Starch Co., Ltd.Inventor: Hideyuki Tanaka
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Patent number: 6489468Abstract: 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 90% relative to the total AS. Also disclosed is a method of producing the regioselectively substituted ester. The method entails reacting in the presence of a catalyst a dissolved or a highly swollen oligo-saccharide or polysaccharide with an esterification reagent.Type: GrantFiled: February 29, 2000Date of Patent: December 3, 2002Assignee: Wolff Walsrode AGInventors: Erik-Andreas Klohr, Wolfgang Koch, Dieter Klemm, René Dicke
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Patent number: 6475991Abstract: The present invention embraces methods and compositions which employ antimicrobial compositions which are &agr;-alkylglucosides and esters thereof.Type: GrantFiled: November 23, 1998Date of Patent: November 5, 2002Assignee: UliceInventors: Emmanuel Boures, Arnaud Messager
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Patent number: 6455285Abstract: Protease enzyme from Bacillus subtilis and Bacillus sp. Catalyzes the acylation of organic solvent-insoluble macromolecules in isooctane solution containing vinyl esters of fatty acids, lactones or lactides as acyl donors. The reaction occurs only when the enzyme is solubilized via ion-pairing with the anionic surfactant dioctylsulfosuccinate, sodium salt (AOT). Enzyme based acylation was demonstrated in macromolecules such as silk proteins. These macromolecules are reactive either as cryogenically milled powder suspended in the organic solvent or as a thin film deposited onto ZnSe slides. This selective acylation approach represents the first attempt at using enzymes to modify organic-insoluble macromolecules in nonaqueous media.Type: GrantFiled: August 14, 2000Date of Patent: September 24, 2002Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Joseph A. Akkara, Ferdinando F. Bruno
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Publication number: 20020132310Abstract: Disclosed are derivatized malto-oligosaccharides and methods for the preparation thereof. In accordance with the disclosed invention, a malto-oligosaccharide is hydrogenated to thereby obtain a hydrogenated malto-oligosaccharide, and the resulting hydrogenated malto-oligosaccharide is derivatized, such as via oxidation, esterification, etherification, or enzymatic modification. The derivatization of such hydrogenated malto-oligosaccharides results in a surprisingly low level of a formation of by-products and products of degradation. In a particularly preferred embodiment of the invention, a mixture of malto-oligosaccharides is catalytically hydrogenated under reaction conditions suitable to substantially preserve the degree of polymerization (DP) profile of the mixture. The resulting malto-oligosaccharide mixture then is derivatized to form a derivatized malto-oligosaccharide mixture.Type: ApplicationFiled: December 13, 2001Publication date: September 19, 2002Applicant: Grain Processing CorporationInventors: Richard L. Antrim, Frank W. Barresi
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Patent number: 6448050Abstract: Protease enzyme from Bacillus subtilis and Bacillus sp. Catalyzes the acylation of organic solvent-insoluble macromolecules in isooctane solution containing vinyl esters of fatty acids, lactones or lactides as acyl donors. The reaction occurs only when the enzyme is solubilized via ion-pairing with the anionic surfactant dioctylsulfosuccinate, sodium salt (AOT). Enzyme based acylation was demonstrated in macromolecules such as silk proteins. These macromolecules are reactive either as cryogenically milled powder suspended in the organic solvent or as a thin film deposited onto ZnSe slides. This selective acylation approach represents the first attempt at using enzymes to modify organic-insoluble macromolecules in nonaqueous media.Type: GrantFiled: August 14, 2000Date of Patent: September 10, 2002Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Joseph A. Akkara, Ferdinando F. Bruno
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Patent number: 6369215Abstract: 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 ester group is at least 1. The HPS ester is prepared by hydroxypropylating a starch-containing base material in an aqueous alkanol medium. A starch component can be prepared of the HPS ester containing 90 to 60% by weight HPS ester and 10 to 40% by weight of a plasticizer. Compositions which are suited for, e.g., coating board or paper and for use as a component in labelling adhesives or paint, can be made from the starch component by combining it with auxiliaries known as such within the polymer and plastics technology.Type: GrantFiled: August 19, 1999Date of Patent: April 9, 2002Assignee: Valtion teknillinen tutkimuskeskusInventors: Soili Peltonen, Pertti Tiitola, Jani Vuorenp{umlaut over (aa)}, Harri Happonen, Pertti Törmälä
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Publication number: 20020038004Abstract: A reagent having the general formula of General Formula I: 1Type: ApplicationFiled: June 4, 2001Publication date: March 28, 2002Inventors: Mark L. Stolowitz, Guisheng Li, Jean P. Wiley
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Patent number: 6316606Abstract: The present invention is an enzyme-decomposable polymer compound having recyclable decomposition products. The polymeric compound is a glycopolymer of a saccharide having only glucopyranose rings and a second component. In addition, the glycopolymer may contain molecular chains having at least one type of repeating unit, which chains are crosslinked by a saccharide having only glucopyranose rings.Type: GrantFiled: June 18, 1997Date of Patent: November 13, 2001Assignee: Canon Kabusiki KaishaInventors: Hiroyoshi Kishi, Toyoko Kobayashi, Kiyoshi Sakai, Norio Kaneko, Kazumi Tanaka, Chieko Mihara, Toshihiko Takeda, Yoshihiko Kikuchi
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Publication number: 20010037018Abstract: The invention covers a process to manufacture biodegradable starch esters which can be processed into extrudates, formed parts and sheeting. The starch is activated with a carboxylic acid/carboxylic anhydride mixture through partial swelling and the onsetting esterification reaction at simultaneous conversion of the water entrained in the starch and partially esterified with a carboxylic anhydride up to the desired degree of substitution with progressing swelling and disintegration.Type: ApplicationFiled: February 22, 1999Publication date: November 1, 2001Inventors: ROLF KAKUSCHKE, INNO RAPTHEL, HARTMUT STOYE, GUNTER SCHMOZ
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Patent number: 6306376Abstract: Arbutin monoesters are employed in a composition for topical application, as a depigmenting and/or bleaching agent for human skin, hair and/or head hair. The invention relates to a method of manufacturing a composition of at least one arbutin monoester in a physiologically acceptable medium for depigmenting and/or bleaching human skin, hair and/or head hair.Type: GrantFiled: July 8, 1998Date of Patent: October 23, 2001Assignee: L'OrealInventor: Michel Philippe
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Patent number: 6162920Abstract: The invention relates to pharmacologically active compounds that have the ability to influence the polymerisation and depolymerisation of tubulin.A range of natural mitosis toxins are used as anti-tumor agents or are in the process of being clinically tested. There are various classes of such mitosis toxins that either demonstrate their cytotoxic action by inhibiting the polymerisation of microtubules in the spindle system (for example, Vinca alkaloids, colchicine) or achieve their cytotoxic action by a GTP-independent increase in the polymerisation of the tubulin and by preventing the depolymerisation of microtubules (for example, taxol, taxoters).Owing to their physico-chemical properties, hitherto not understood, and as a result of the characteristics of neoplastic cells, mitosis toxins have a certain selectivity for tumor cells, but there still remains a not inconsiderable cytotoxicity towards non-transformed cells.Type: GrantFiled: July 30, 1998Date of Patent: December 19, 2000Assignee: Schering AktiensgesellschaftInventors: Ulrich Klar, Gunter Neef, Hermann Graf
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Patent number: 6096524Abstract: 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 color. A granular chemically derivatized, optionally converted, starch having a degree of substitution of greater than about 0.01 and less than about 0.5 is used as the starting material. The maltodextrins have a reducing sugar content of about 5-19 dextrose equivalent and a distinct polymodal molecular weight distribution. When a granular highly esterified starch (D.S. of 0.5-1.8) is used as the starting material in the high solids process, the resulting enzyme-converted, esterified maltodextrins are characterized by their improved water dispersibility.Type: GrantFiled: May 14, 1998Date of Patent: August 1, 2000Assignee: National Starch and Chemical Investment Holding CorporationInventors: Yong-Cheng Shi, James L. Eden, James J. Kasica
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Patent number: RE39339Abstract: Compositions, methods, and systems for manufacturing articles, particularly containers and packaging materials, having a fiber-reinforced, starch-bound cellular matrix. Suitable mixtures used to form the articles are prepared by first preparing a viscous preblended mixture comprising water, a gelatinized starch-based binder, and fibers having an average length greater than about 2 mm. The highly viscous preblended mixture effectively transfers the shearing forces of the mixer to the fibers. The final moldable mixture is then prepared by mixing into the preblended mixture the remaining starch-based binder, water, and other desired admixtures, e.g., mold-releasing agents, inorganic filler rheology-modifying agents, plasticizers, coating materials, and dispersants, in the correct proportions to form an article which has the desired performance criteria.Type: GrantFiled: September 2, 1999Date of Patent: October 17, 2006Assignee: E. Khashoggi Industries, LLCInventors: Per Just Andersen, Simon K. Hodson