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| Number | Title | Issue Date |
| 7271210 | Stabilized ester compositions and their use in film-forming compositions This invention relates to a composition comprising, consisting of or alternatively consisting essentially of a stabilized furfural or glycol ester of a vegetable oil fatty acid and an antioxidant such as butylated hydroxy toluene. This invention also relates to late... | 09/18/2007 |
| 7173142 | Gaseous acid catalysis A method of gaseous acid catalysis which finds particular applications in the manufacture of furfural includes the steps of introducing a solid reactant containing one or more hydroxyl groups into a reactor (1); introducing superheated steam from a superheate... | 02/06/2007 |
| 6955743 | Method for producing furfural, acetic acid and formic acid from spent pulp-cooking liquor The invention relates to a process for recovering and producing chemicals in a pulp production process where organic chemicals, such as formic acid and acetic acid, are used as cooking chemicals. The process of the invention is based on regeneration of cooking acids... | 10/18/2005 |
| 6603026 | Heterocyclic compounds produced from biomass Sugars derived from acidic hydrolysis of biomass consist of glucose and xyloses which are subjected to dehydration, within the hydrolysis environment, to form heterocyclic compounds, furfural and hydroxymethylfurfural. By providing a vessel for hydrolysis... | 08/05/2003 |
| 6441237 | Substituted 3-phenoxy- and 3-phenylalkyloxy-2-phenyl-propylamines The present patent application relates to new substituted 3-phenoxy- or 3-phenylalkyloxy-2-phenyl-propylamines of general formula 1, processes for preparing them and their use as pharmaceutical compositions. ##STR1##... | 08/27/2002 |
| 6441202 | Heterocyclic compounds extracted by a hydrocarbon Sugars derived from acidic hydrolysis of biomass consist of glucose and xyloses which are subjected to dehydration, within the hydrolysis environment, to form heterocyclic compounds, furfural and hydroxymethylfurfural. By providing a vessel for hydrolysis... | 08/27/2002 |
| 6420188 | Screening assay for the identification of inhibitors for macrophage migration inhibitory factor The present invention encompasses assays to identify compounds that inhibit the enzymatic activity of MIF which catalyzes the tautomerization of MIF-substrates, such as D-dopachrome to DHICA. In general, the assay is conducted in vitro by adding, mixing o... | 07/16/2002 |
| 6384249 | Compounds and methods for stabilization of furfural compositions Inhibitor compounds containing a moiety according to this invention are used to inhibit air oxidation and thermal polymerization of furfural or furfural derivatives. A process is provided for use of the inhibitors in the solvent refining of lubricating oi... | 05/07/2002 |
| 5788812 | Method of recovering furfural from organic pulping liquor This invention provides for the recovery of lignin and other by-products from the pulping of fibrous plant material. In accordance with this invention, solvents and filtrates are recovered and recycled for reuse. This results in significant solvent and en... | 08/04/1998 |
| 5608105 | Production of levulinic acid from carbohydrate-containing materials A continuous process for producing levulinic acid from carbohydrate-containing materials in high yields is described. According to the process, a carbohydrate-containing material is supplied continuously to a first reactor and hydrolyzed at between 210° ... | 03/04/1997 |
| 5453519 | Process for inhibiting oxidation and polymerization of furfural and its derivatives Dialkylphenylenediamines are used to inhibit oxidation and polymerization of furfural or furfural derivatives. The preferred use of the inhibitor is in the solvent refining of lubricating oils using furfural to extract constituents from the lubricating oi... | 09/26/1995 |
| 5332842 | Process for inhibiting oxidation and polymerization of furfural and its derivatives Dialkylphenylenediamines are used to inhibit oxidation and polymerization of furfural or furfural derivatives. The preferred use of the inhibitor is in the solvent refining of lubricating oils using furfural to extract constituents from the lubricating oi... | 07/26/1994 |
| 5011611 | Method of separation of furfural from diluted aqueous solutions Furfural is separated from a dilute aqueous solution by contacting the solution with a polymer adsorbent which comprises porous crosslinked copolymers of styrene and derivatives thereof, having an internal surface area greater than 30 m2 /g and... | 04/30/1991 |
| 4971657 | Combined process for thermally and chemically treating lignocellulose-containing biomass and for producing furfural and cellulose-containing fiber masses A process for the thermal and chemical treatment of lignocellulose-containing biomass and for the production of furfural and cellulose-containing fiber masses. In order to ensure a high yield of furfural: lignocellulose-containing biomass is continuously ... | 11/20/1990 |
| 4916242 | Combined process for thermally and chemically treating lignocellulose-containing biomass and for producing furfural In a combined process for the thermal and chemical treatment of lignocellulose-containing biomass and for the production of furfural, biomass is supplied to a cooker in batches, is heated in the cooker under the addition of cooking liquor, and cellulose o... | 04/10/1990 |
| 4897497 | Lignocellulose degradation to furfural and levulinic acid A process for producing furfural and levulinic acid from lignocellulose includes subjecting a sample of lignocellulose to acid degradation at an elevated temperature for a minute or less, during which time at least fifty percent of the furfural that theor... | 01/30/1990 |
| 4433155 | Inhibitors for furfurals Furfural or derivatives thereof, especially 5-chloromethyl furfural, is inhibited against the formation of resinous decomposition products by addition of epoxy compounds such as the reaction product of epichlorohydrin and bisphenol A.... | 02/21/1984 |
| 4401514 | Method for the recovery of furfural, acetic acid and formic acid A method of recovering or extracting chemicals, such as furfural, formic acid, acetic acid and other organic compounds from acidic hydrolysates of plants or vegetable matter, especially spent sulfite liquors after conversion of the pentosans into pentoses... | 08/30/1983 |
| 4088660 | Method for the separation and recovery of furfural and organic volatile acids, such as acetic acid and formic acid, from the process of preparation of furfural The object of the present invention is a method for the separation and recovery of furfural and organic volatile acids from a vapor mixture obtained in the process of preparation of furfural. According to the method, from a vapor mixture containing water ... | 05/09/1978 |
| 4016180 | Chemical concentration by adsorption A low cost, two-stage adsorption-desorption method of concentrating dilute supplies of chemicals is provided which uses a minimum of energy in the form of process steam and yields highly concentrated supplies of end products which are suitable for reuse o... | 04/05/1977 |
