Mixed Esters Patents (Class 536/36)
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Patent number: 8212062Abstract: The present invention relates to a method for producing fatty acid alkyl esters as well as cellulosic simplified sugars, shortened protein polymers, amino acids, or combination thereof resulting from the simultaneous esterification and hydrolysis, alcoholysis, or both of algae and other oil containing materials containing free fatty acids (FFA), glycerides, or combination thereof as well as polysaccharides, cellulose, hemicellulose, lignocellulose, protein polymers, or combination thereof in presences of an alcohol and an acid catalyst.Type: GrantFiled: April 2, 2008Date of Patent: July 3, 2012Assignee: Inventure Chemical, Inc.Inventors: William Wes Berry, Mark G. Tegen, Stephen L. Hillis
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Patent number: 7071326Abstract: An anionic cellulose nitrate derivative is described, which has: (i) a degree of acid group substitution (DS (acid)) in the range of 0.01 to 0.2; and (ii) a nitrogen content of 10.7 wt. % to 12.3 wt. %, based on the weight of cellulose nitrate derivative. The anionic cellulose nitrate derivative is prepared by a process which includes esterifying cellulose nitrate feed material with at least one dicarboxylic acid anhydride (e.g., maleic anhydride). Aqueous dispersions according to the present invention include: (a) at least on anionic cellulose nitrate derivative according to the present invention; and (b) at least one base.Type: GrantFiled: November 30, 2005Date of Patent: July 4, 2006Assignee: Wolff Cellulosics GmbH & Co. KGInventors: Carsten Hüttermann, Thomas Wagner, Klaus Nachtkamp
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Patent number: 6646119Abstract: The starting pyroxylin is subjected to an acetylation reaction while it is dispersed in a dispersion medium such as toluene and kept in a solid phase state, and acetylated pyroxylin is then separated from a reaction solution by means of filtration, so that an extra portion of anhydrous acetic acid taking no part in the reaction can be immediately recovered. This dispenses with the precipitation process required for a prior art solution reaction, and so eliminates an unstable quality factor due to product particle size variations. In addition, the process of washing the post-reaction crude acetylated pyroxylin is designed to include a washing step at a high temperature of 60° C. to 105° C. and a washing step using a stabilizer-containing washing agent, so that acetylated pyroxylin having improved heat resistance and stability can be provided.Type: GrantFiled: October 4, 2000Date of Patent: November 11, 2003Assignee: Daicel Chemical Industries, Ltd.Inventors: Tokuji Tanaka, Kazuhiro Nishioka
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Patent number: 6417345Abstract: The invention provides a method for producing acetylated pyroxylin with safety yet at low cost, using inexpensive water-wetted pyroxylin rather than expensive alcohol-wetted pyroxylin. The acetylated pyroxylin is produced by dehydrating the water-wetted pyroxylin in the presence of a nonalcoholic non-solvent for pyroxylin, and then permitting an acetylating agent to act on the dehydrated pyroxylin. According to the first dehydration process, the water-wetted pyroxylin is dispersed in a dispersing medium comprising a nonalcoholic non-solvent for pyroxylin, and then dehydrated by distillation. According to the second dehydration process, a replacing agent comprising a nonalcoholic non-solvent for pyroxylin is added to the water-wetted pyroxylin, and the wetted pyroxylin is then dehydrated by filtration. With either one of these processes, the water-wetted pyroxylin can be dehydrated with safety.Type: GrantFiled: October 8, 1999Date of Patent: July 9, 2002Assignee: Daicel Chemical Industries, Ltd.Inventors: Tokuji Tanaka, Noboru Kamei, Hideo Yabune
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Patent number: 6417344Abstract: The starting pyroxylin is subjected to an acetylation reaction while it is dispersed in a dispersion medium such as toluene and kept in a solid phase state, and acetylated pyroxylin is then separated from a reaction solution by means of filtration, so that an extra portion of anhydrous acetic acid taking no part in the reaction can be immediately recovered. This dispenses with the precipitation process required for a prior art solution reaction, and so eliminates an unstable quality factor due to product particle size variations. In addition, the process of washing the post-reaction crude acetylated pyroxylin is designed to include a washing step at a high temperature of 60 to 105° C. and a washing step using a stabilizer-containing washing agent, so that acetylated pyroxylin having improved heat resistance and stability can be provided.Type: GrantFiled: July 9, 1999Date of Patent: July 9, 2002Assignee: Daicel Chemical Industries, Ltd.Inventors: Tokuji Tanaka, Kazuhiro Nishioka
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Patent number: 6365732Abstract: The present invention includes a process for extracting a stereoisomer fro biomass. The method comprises providing biomass and subjecting the biomass to substantially instantaneous pressurization and depressurization to separate cellulose, hemicellulose, and lignin from the biomass. The hemicellulose is hydrolyzed to form hemicellulose hydrolysates. The hydrolysates are separated using chromatography.Type: GrantFiled: July 10, 2000Date of Patent: April 2, 2002Assignee: Sweet Beet IncorporatedInventor: Doug Van Thorre
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Publication number: 20010007027Abstract: The present invention relates to evenly substituted polysaccharide derivatives having the general structure:Type: ApplicationFiled: April 2, 1997Publication date: July 5, 2001Inventors: JURGEN ENGELHARDT, JOACHIM SIMON, HANNS-PETER MULLER, RAINHARD KOCH, DIRK-JACQUES DIJKSTRA
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Patent number: 5589577Abstract: 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 in hot-melt adhesives and as coatings for the controlled release of active ingredients, especially fertilizers. A convenient method for preparing said polysacharide esters using e.g. dimethylformamide as a solvent is also disclosed.Type: GrantFiled: October 26, 1994Date of Patent: December 31, 1996Assignee: Alko Group Ltd.Inventors: Soili Peltonen, Kai Harju
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Patent number: 5538018Abstract: This invention provides a cigarette product which releases vanillin or ethylvanillin aroma in sidestream smoke under cigarette smoking conditions. The paper wrapper of the cigarette product has a content of a flavorant-release additive which is a novel 3-vanillyl-2-hydroxypropyl or 3-ethylvanillyl-2-hydroxypropyl substituted ether derivative of cellulose.Type: GrantFiled: April 5, 1995Date of Patent: July 23, 1996Assignees: Philip Morris Incorporated, Philip Morris Products Inc.Inventors: W. Geoffrey Chan, Yoram Houminer, Ernst K. Just, Makram H. Meshreki, Susan S. Tafur
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Patent number: 4849514Abstract: This invention is an improved process of making azidodeoxycellulose a hig energetic ingredient for use in a propellant. The process is accomplished by nitrating cellulose to nitrocellulose, converting the nitrocellulose in sequence to the iodine derivative, and finally reacting the iodine derivative of cellulose with sodium azide to produce azidodeoxycellulose having up to about 1.5% residual nitrogen as nitrate groups.Type: GrantFiled: March 7, 1988Date of Patent: July 18, 1989Assignee: The United States of America as represented by the Secretary of the ArmyInventor: Everett E. Gilbert
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Patent number: 4487926Abstract: A fluorine-containing cellulose derivative which is represented by the general formula: ##STR1## wherein R is acetyl group which may be partially replaced by propionyl or butyryl group, x is 1.7-2.5, y is 0.05-0.6, p is 0,1,2 or 3 and n is the degree of polymerization, to be usable for the material of fibers, moldings, films, semipermeable membranes, coatings or the like.Type: GrantFiled: January 12, 1984Date of Patent: December 11, 1984Assignee: Daicel Chemical Industries, Ltd.Inventors: Nobuo Ishikawa, Hiroki Taniguchi
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Patent number: 4256613Abstract: A composition and process are provided for making precipitated biconstituent nylon-cellulose shaped articles by dissolving a nylon having an amide group index of less than about 145, in a mixture of a tertiary amine oxide solvent and water, containing from about 0.5% to about 11% water based on the weight of the solution; separately forming a solution of cellulose in a tertiary amine oxide solvent containing from about 0.8 to about 29% water based on the weight of the solution and then interdispersing the two solutions to form a biconstituent dispersion. Shaped articles can be formed from the biconstituent dispersions of the invention.Type: GrantFiled: July 2, 1979Date of Patent: March 17, 1981Assignee: Akzona IncorporatedInventors: Neal E. Franks, Julianna K. Varga
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Patent number: 4249000Abstract: Polymers from the group consisting of cellulose and its ester and ether derivatives, of polyvinyl alcohol and its ester derivatives, polymers with vinyl esters and homopolymers and copolymers of acrylates and methacrylates are modified with monofunctional or difunctional cyclic .beta.-ketonic acids or their esters, in particular with succinylsuccinic acid or its ester derivatives. The modified polymers are particularly suitable for obtaining semi-permeable membranes for osmotic separation methods.Type: GrantFiled: February 21, 1979Date of Patent: February 3, 1981Assignee: Ciba-Geigy CorporationInventors: Hans Batzer, Joel Sinnreich
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Patent number: 4242506Abstract: Cellulose sulfate esters are cross-linked with tetravalent metal ions at a threshold pH of about 3.0 or higher. The cross-linked products have a higher aqueous viscosity and are more highly pseudoplastic than the precursor cellulose sulfate and may also exhibit a relatively high yield point. The products may be employed in forming thickened aqueous compositions and cohesive gel-like compositions.The presence of other metallic ions, in addition to the tetravalent metal ions, is beneficial and enhances the viscosity increase produced by cross-linking of the cellulose sulfate with the tetravalent metal ions.Type: GrantFiled: July 5, 1979Date of Patent: December 30, 1980Inventor: Richard G. Schweiger
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Patent number: 4138535Abstract: A polysaccharide or polyvinyl alcohol containing a mixture of nitrite ester groups with sulfate or nitrate ester groups with the mixture of ester groups being substantially uniformly distributed among the polymer units of the polysaccharide or polyvinyl alcohol.A nitrite ester of a polysaccharide alcohol having a degree of substitution of less than about 2.0. A nitrite ester of polyvinyl alcohol having a degree of substitution of 1.0 or less.Type: GrantFiled: April 18, 1977Date of Patent: February 6, 1979Inventor: Richard G. Schweiger
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Patent number: 4056400Abstract: A composition which consists essentially of a mixture of oligomeric and polymeric oxidation products of cellulose, hemicellulose and lignin containing carboxy, ether and hydroxy groups as obtained by the direct oxidation of a woody plant material, preferably in an aqueous suspension thereof, using alkali hypohalite in a one stage oxidation procedure or nitrogen dioxide, alkali periodate or lead tetraacetate followed by alkali chlorite or alkali hypochlorite in a two stage oxidation procedure. The resulting oxidation products as obtained by one of these specific processes are especially valuable as additives to a surface active detergent or cleaning agent.Type: GrantFiled: July 28, 1975Date of Patent: November 1, 1977Assignees: Michael Diamantoglou, Helmut Magerlein, Rainer ZielkeInventors: Michael Diamantoglou, Helmut Magerlein, Rainer Zielke, Emery George Philomena Cornelissens
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Patent number: 4000127Abstract: Carboxymethylated derivatives of polysaccharide compounds such as starch are disclosed which have improved sequestering properties and are useful as water softeners as well as detergency builders in detergent compositions. The compounds are water-soluble and have from 0.5 to 3 hydrogen atoms of the hydroxyl groups per monomeric six carbon glucose unit entirely or partially substituted with at least 2 neutralized or non-neutralized carboxyl groups.Built detergent compositions containing the water-soluble carboxymethylated derivatives of polysaccharide compounds with organic water soluble surfactants are also disclosed. The compositions exhibit improved sequestering power.Type: GrantFiled: December 21, 1973Date of Patent: December 28, 1976Assignee: Akzo N.V.Inventors: Emery G. P. Cornelissens, Jan J. H. Ploumen
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Patent number: RE30459Abstract: A polysaccharide or polyvinyl alcohol containing a mixture of nitrite ester groups with sulfate or nitrate ester groups with the mixture of ester groups being substantially uniformly distributed among the polymer units of the polysaccharide or polyvinyl alcohol.A nitrite ester of a polysaccharide alcohol having a degree of substitution of less than about 2.0. A nitrite ester of polyvinyl alcohol having a degree of substitution of 1.0 or less.Type: GrantFiled: April 26, 1979Date of Patent: December 23, 1980Inventor: Richard G. Schweiger