41
William A Farone, John E Cuzens: Method for the production of levulinic acid and its derivatives. Arkenol, Knobbe Martens Olson & Bear, April 25, 2000: US06054611 (26 worldwide citation)

A method of producing dehydration products from one more 5-carbon or 6-carbon sugars includes reacting said one or more sugars at 40-240.degree. C. for 1 to 96 hours in the presence of 5-90% sulfuric acid, separating the reaction products, and recovering levulinic acid. The sugars are can be generat ...


42
Milford Hanna, Gerald Biby, Vesselin Miladinov: Production of microcrystalline cellulose by reactive extrusion. University of Nebraska Lincoln, Shook Hardy & Bacon, May 8, 2001: US06228213 (26 worldwide citation)

This process involves feeding cellulose into an extruder with an acid solution. The extruder is comprised of a screw and a barrel. The screw is rotated so as to pressurize the cellulose, and the cellulose undergoes acid hydrolysis and forms microcrystalline cellulose. The invented process can be acc ...


43
Roger D Hester, George E Farina, Srikanth Nanguneri: Process for separating acid-sugar mixtures using ion exclusion chromatography. Tennessee Valley Authority, Robert A Petrusek, April 18, 1995: US05407580 (26 worldwide citation)

A process for effectively and economically separating an ionic component such as acid from a nonionic component such as sugar in polar solutions using ion exclusion technology whereby the viability of using hydrolysis to convert wood and agricultural waste products such as corn stover into fuel alco ...


44
George T Tsao, Michael R Ladisch, Arindam Bose: Acid hydrolysis of cellulose to yield glucose. Purdue Research Foundation, John R Nesbitt, November 20, 1979: US04174976 (26 worldwide citation)

A process to yield glucose from cellulose through acid hydrolysis. Cellulose is recovered from cellulosic materials, preferably by pretreating the cellulosic materials by dissolving the cellulosic materials in Cadoxen or a chelating metal caustic swelling solvent and then precipitating the cellulose ...


45
Valerie Niddam, Ramy Lidor Hadas, Revital Lifshitz, Eti Ishai: Hydrolysis of [R(R*,R*)]-2-(4-fluorophenyl)-&bgr;,&dgr;-dihydroxy-5-(1-methylethyl)-3-phenyl-4-[(phenylamino) carbonyl]-1H-pyrrole-1-heptanoic acid esters with calcium hydroxide. Teva Pharmaceutical, Kenyon & Kenyon, March 4, 2003: US06528661 (26 worldwide citation)

The present invention provides a process for preparing atorvastatin hemi-calcium from an atorvastatin ester derivative with calcium hydroxide. The process is conveniently incorporated into a process for preparing atorvastatin hemi-calcium from an acetonide protected, ester protected &bgr;,&dgr;-dihy ...


46
Saka Shiro, Nakamori Kenichi: Method for treating biomass through combination of dissolution by cellulose solvent and hydrolysis. Hitachi Zosen, Saka Shiro, August 31, 2006: JP2006-223152 (26 worldwide citation)

PROBLEM TO BE SOLVED: To provide a method for treating biomass to efficiently and easily produce monosaccharides or oligosaccharides, optionally polysaccharides.SOLUTION: The method comprises a combination of the step of dissolving polysaccharide-based biomass in cellulose solvent(s) and the step of ...


47
Otavio Vianna Carvalho, Ronaldo Mendonca Mansur, Sandro da Silva Aguiar, Jane Hitoni Fujiyama, Antonio Luiz Ribeiro de Castro: Malonic acid and esters thereof. Trikem, Birch Stewart Kolasch & Birch, May 28, 2002: US06395931 (25 worldwide citation)

A process for preparing malonic acid from the hydrolysis of cyanoacetic acid in the presence of aqueous hydrochloric acid, the process conditions being such that they allow high yields in malonic acid product. The product of said acid hydrolysis is a mixture of malonic acid and ammonium chloride by- ...


48
James L Gaddy, Edgar C Clausen: Method of separation of sugars and concentrated sulfuric acid. Dorsey & Whitney, August 26, 1986: US04608245 (24 worldwide citation)

A method of recovering concentrated sulfuric acid from the product obtained from the acid hydrolysis of a cellulose-containing material such a biomass. The method involves contacting the product with an extraction solvent comprising one or more of the C.sub.4 -C.sub.7 alcohols as the major component ...


49
Roger D Hester, George E Faina: Process for separating acid-sugar mixtures using ion exclusion chromatography. Tennessee Valley Authority, Robert A Petrusek, July 23, 1996: US05538637 (24 worldwide citation)

A process for effectively and economically separating an ionic component such as acid from a nonionic component such as sugar in polar solutions using ion exclusion technology whereby the viability of using hydrolysis to convert wood and agricultural waste products such as corn stover into fuel alco ...


50
Lawrence J Russo Jr: Method for the separation of acid from sugars. Controlled Environmental Systems Corporation, Sterne Kessler Goldstein & Fox P L L C, July 16, 2002: US06419828 (24 worldwide citation)

A method for separating acid and sugars obtained from liquids resulting from the acid hydrolysis of a material containing at least one of cellulose and hemicellulose is disclosed, comprising adding the liquids to a separation unit comprising a bed of anionic exchange or exclusion chromatographic mat ...



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