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| Number | Title | Issue Date |
| 8134032 | Crystalline modifications of (1R,2R)-3-(3-dimethylamino-1-ethyl-2-methyl-propyl)-phenol Crystalline modifications of (1R,2R)-3-(3-dimethylamino-1-ethyl-2-methyl-propyl)-phenol, pharmaceutical compositions which contain these modifications, and the use thereof to treat pain or other conditions. ... | 03/13/2012 |
| 8013191 | Method for removing impurities from phenol A two-step method of crude phenol treatment from impurities, wherein a first step comprises oxidizing hydroxyacetone and aldehydes impurities, in phenol medium by air oxygen with the use of a heterogeneous catalyst which contains transition metals, and a second step... | 09/06/2011 |
| 7977516 | Process of obtainment of trans-resveratrol and/or emodin and nutraceutical compositions containing them Processes for the separation and purification of polyphenol trans-resveratrol and/or anthraquinone emodin from Polygonum cuspidatum and/or Rumex acetosa, by means of solvent selective extraction. Products obtained by this process present high level of ... | 07/12/2011 |
| 7781623 | Method for producing cardanol (II) A process for the production of a color-stable composition containing cardanol, including (a) subjecting crude, cashew nutshell liquid to distillation to obtain a distillate; (b) reacting the distillate with acetic anhydride to obtain a reaction mixture; and (c) sub... | 08/24/2010 |
| 7351567 | Enzymatic resolution of selective estrogen receptor modulators The present invention relates to a process for preparing 5-substitued-6-cyclic-5,6,7,8-tetrahydronaphthalen-2-ol compounds useful as an estrogen agonist. ... | 04/01/2008 |
| 7244772 | Process for preparing polyurethane polyol and rigid foams therefrom We describe a process for the preparation of polyurethane polyol from CARDANOL 3-(8pentadecenyl)phenol, derived from cashew nut shell liquid (CNSL), a renewable resource material. The polyol is made by oxidation with peroxy acid generated in situ to give epoxidised ... | 07/17/2007 |
| 7153394 | System to isolate dianhydrides A process to isolate dianhydride from an exchange reaction comprises extracting a bisimide/anhydride exchange reaction aqueous phase with an organic solution comprising an exchange catalyst at a first temperature and pressure to form an extracted aqueous phase compr... | 12/26/2006 |
| 7034192 | Method for removal of acetol from phenol A method is provided for the efficient, low cost removal of acetol from a phenol stream. The method results in removal of substantially all of the acetol from the phenol stream without the formation of substantial amounts of additional methylbenzofuran. The method a... | 04/25/2006 |
| 6946055 | Method for recovering an organic solvent from a waste stream containing supercritical CO2 An organic solvent is separated from a waste stream containing supercritical CO2, an organic solvent and etchant contaminants. The process includes separating the supercritical CO2 by subjecting the waste stream to elevated temperature and/or r... | 09/20/2005 |
| 6660884 | Catalysts, methods for making said catalysts, and methods for making chiral compounds with high enantioselectivity The present invention relates to compounds useful as catalysts in asymmetric synthesis of chiral compounds, methods for the synthesis of said catalysts, and methods for synthesizing chiral compounds with high enantioselectivity.... | 12/09/2003 |
| 6586639 | Functional alcohol releasing substance This invention discloses a substance which is a betaine ester of a functional alcohol that has an amido bond in its molecule and releases the functional alcohol.... | 07/01/2003 |
| 6491795 | Process for recovering benzyl benzoate High-purity benzyl benzoate is recovered by distilling the residue remaining after removal of unreacted toluene and benzoic acid from a reaction mixture produced by the oxidation of toluene by molecular oxygen in the presence of a metal catalyst thereby s... | 12/10/2002 |
| 6437176 | Method for preparing aromatic carboxylic acids, aromatic aldehydes, and aromatic alcohols An aromatic carboxylic acid, aromatic aldehyde, and aromatic alcohol are simultaneously and efficiently prepared by liquid phase oxidizing an aromatic compound represented by formula (I) with a gas containing molecular oxygen, in a presence of a catalyst ... | 08/20/2002 |
| 6423290 | Method for recovering an organic solvent from an acidic waste stream such as in integrated chip manufacturing An organic solvent is separated from a waste stream comprising hydrofluoric acid, an organic solvent and etchant contaminants. The process comprises separating the hydrofluoric acid by subjecting the waste stream to at least one of the following processes... | 07/23/2002 |
| 6361983 | Process for the isolation of 1,3-propanediol from fermentation broth The invention concerns a process for the isolation of polyols, such as 1,3-propanediol, from a fermentation broth. Specifically, the invention discloses a process of adding base to the fermentation broth to raise the pH to a suitable level for reduction o... | 03/26/2002 |
| 6218581 | Process of producing optically active alcohol The present invention relates to a process of producing optically active alcohol having high optical purity by performing an enzyme conversion reaction on a raw material serving as the substrate, examples of which include racemic alcohol, ketone and the a... | 04/17/2001 |
| 6207867 | Method for purifying ଲ-phenylethyl alcohol A method for purifying ଲ-phenylethyl alcohol, comprising an extractive distillation process in which crude ଲ-phenylethyl alcohol is extractive-distilled using an extraction solvent (A), and an extracting process in which the extraction solvent (A) after... | 03/27/2001 |
| 6197994 | Silica gel supported bis-cinchona alkaloid derivatives and a preparation method and use thereof The present invention relates to silica gel supported bis-cinchona alkaloid compounds of the formula: ##STR1## wherein Q is dihydroquininyl or dihydroquinindinyl; X is a compound having 4 carbon atoms; and R is methoxy, ethoxy or methyl; and methods of ... | 03/06/2001 |
| 6187965 | Process for recovering high boiling solvents from a photolithographic waste stream comprising at least 10 percent by weight of monomeric units A method of recovering benzyl alcohol, gamma butyrolactone, or propylene carbonate from an impure effluent stream of an industrial process is provided. The effluent waste stream contains greater than about 10 percent by weight of monomeric units that are ... | 02/13/2001 |
| 6166260 | Tandem reduction and host-guest complexation The present invention relates to a tandem process of reduction and host-guest complexation using metal-hydride complexes to reduce chemical entities bearing carbonyl groups or their equivalents, and host-guest complexation to achieve improved optical reso... | 12/26/2000 |
| 5994597 | Process for recovering high boiling solvents from a photolithographic waste stream comprising less than 10 percent by weight monomeric units A method of recovering solvents from an impure effluent stream of an industrial process. The effluent waste stream contains less than about 10 percent by weight of monomeric units that are reacted to form larger oligomers and polymers. The waste stream co... | 11/30/1999 |
| 5986095 | Enantioselective preparation of halophenyl alcohols and acylates A process is described for preparing a compound of the formula or the S-enantiomer thereof, wherein: R is alkyl, aryl, cycloalkyl, aralkyl, or cycloalkylalkyl, R1 is halogen; R2 is halogen, alkyl, cycloalkyl, aryl or ##STR1## wherein... | 11/16/1999 |
| 5981807 | Production of optically active 2-halo-1-(substituted phenyl)ethanol and substituted styrene oxide A process for producing optically active 2-halo-1-(substituted phenyl)ethanol of a formula (Ia) or optically active styrene oxide of a formula (Ib). The process comprises the steps of reacting a compound of a formula (II) with phthalic anhydride to give a... | 11/09/1999 |
| 5965780 | Method for extracting 2-phenylethanol The invention relates to a method for extracting 2-phenylethanol, in which the 2-phenylethanol is extracted from the distillation residues obtained during the production of alcohol.... | 10/12/1999 |
| 5919991 | Solid phase extraction of phenethyl alcohol A method for isolating phenethyl alcohol in high yield is provided by fermenting L-phenylalanine within a fermentation bath to provide phenethyl alcohol. The fermented phenethyl alcohol is then contacted with an ion-exchange resin to extract the phenethyl... | 07/06/1999 |
| 5888400 | Process for preparing low-salt preparations of condensation products A process for preparing low-salt preparations of condensation products based on A) sulphonated aromatics, B) aldehydes and/or ketones and optionally C) one or more compounds selected from the group consisting of nonsulphonated aromatics, urea and urea derivati... | 03/30/1999 |
| 5756862 | Production of optically active 2-halo-1-(substituted phenyl)ethanol and substituted styrene oxide A process for producing optically active 2-halo-1-(substituted phenyl)ethanol of a formula (Ia) or optically active styrene oxide of a formula (Ib). The process comprises the steps of reacting a compound of a formula (II) with phthalic anhydride to give a... | 05/26/1998 |
| 5714642 | Resolution of immixtures of stereoisomeric alcohols Immixture of stereoisomeric alcohols is resolved by selectively enzymatically acylating one of the stereoisomers thereof, in the presence of a catalytically effective amount of a hydrolase, for example a lipase, esterase or acylase, in a biphasic hydroorg... | 02/03/1998 |
| 5679766 | Purification process of novolar resins using acid treated chelating cation exchange resin The invention is for a process of removal of dissolved cation contaminants from a resin solution. The process of the invention involves providing a chelating ion exchange resin modified by treatment with an acid and contact of said solution with said modi... | 10/21/1997 |
| 5600027 | Process for producing optically active alcohol containing phenyl group A process for producing an optically active alcohol having a phenyl group is disclosed, comprising the step of carrying out interesterification between (a) a monoester between a racemic alcohol having a phenyl group and a fatty acid or a diester between a... | 02/04/1997 |
| 5538599 | Phenol separation A process is provided whereby phenol is separated from 1-phenyl ethanol, acetophenone or mixtures by extractive distillation with sulfolane as extractive distillation agent which decreases phenol volatility relative to 1-phenyl ethanol and acetophenone.... | 07/23/1996 |
| 5449841 | Process for purifying polyols A process for reducing the level of metal ions and/or metal compounds in a polyoxyalkylene monool or polyol having a number average molecular weight of above 500-25000 by bringing the monool or polyol into contact with an extracting compound which is a po... | 09/12/1995 |
| 5395985 | Compound and separating agent A compound represented by the general formula (I) and a separating agent comprising the same: ##STR1## wherein Ar and Ar' are each an aromatic group; and the positional relationship of the two substituents on the central benzene ring may be any ... | 03/07/1995 |
| 5395983 | Process for producing 1-phenyl-1,3-propanediols having high optical purtiy R or S-1-phenyl-1,3-propanediols having optical purity of 100% ee were obtained by recrystallization of R or S-1-phenyl-1,3-propanediols having optical purity of 20% ee to below 100% ee, the last diols are represented by the formula, ##STR1## It... | 03/07/1995 |
| 5312950 | Method for purification of alcohols A method for the purification of alcohols from organic soluble impurities has been discovered comprising treating the crude alcohol with a cyclic anhydride followed by an aqueous base and extracting the corresponding half-ester into aqueous solution leavi... | 05/17/1994 |
| 5262571 | Cycloalkyl-based chiral auxiliaries and method making the same A process of synthesizing enantiomerically pure compounds defined by Formula V, ##STR1## which are useful as chiral auxiliaries is disclosed. The process comprises, first, combining a base of Formula Y- Z+ (Formula I), whe... | 11/16/1993 |
| 5233103 | Preparation of organoaluminum compounds and linear alcohols derived therefrom This invention povides to a process for making an aluminum trialkyl product which process comprises reacting a mixture comprising, (i) an aluminum alkyl feed which contains one or more aluminum alkyls represented by the formula R3 Al, where R r... | 08/03/1993 |
| 5171868 | Epoxidate treatment Caustic requirements are substantially reduced in the treatment of epoxidate from olefin/ethylbenzene hydroperoxide epoxidation by treating the epoxidate products with an aqueous stream comprised of alkali metal carbonate, separating a phenol-containing 1... | 12/15/1992 |
| 5095155 | Process for the separation of isomers of diastereomeric alcohols Closely boiling diastereomeric isomer alcohols are separated by converting them to esters having disparate boiling points, separating the ester isomers by distillation and saponifying the separate ester isomers to obtain the individual alcohol isomers.... | 03/10/1992 |
| 5081319 | Process for the preparation of 1,1-bis(4-chlorophenyl)-2,2,2-trichloroethanol 1,1-bis(4-chlorophenyl)-2,2,2-trichloroethanol is separated from a mixture comprising by way of the formation of an addition compound between 1,1-bis(4-chlorophenyl)-2,2,2-trichloroethanol and a moderately electron donating compound, preferably selected f... | 01/14/1992 |
