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| Number | Title | Issue Date |
| 7687621 | Process for regenerating catalyst for producing e-caprolactam and process for producing e-caprolactam The present invention provides a process for regenerating a catalyst for producing e-caprolactam comprising the steps of adsorbing a silicon compound on a zeolite catalyst that had been used for a Beckmann rearrangement reaction of cyclohexanone oxime and contacting... | 03/30/2010 |
| 7547778 | Process for the preparation of MFI-type zeolitic catalysts The present invention relates to a process for the preparation of zeolitic catalysts of the MFI type in spheroidal form. The process consists in emulsifying and consolidating in paraffinic hydrocarbons, in the presence of a non-ionic surface-active agent or a... | 06/16/2009 |
| 7332089 | Method of extracting metal ions from an aqueous solution utilizing an antimony silicate sorbent The invention provides a use of a material comprising antimony silicate as a sorbent in the removal of metal ions, e.g. radioactive metal ions, from an acidic liquid medium. The metal ions may be selectively removed from amongst other ions such as Na, K, Mg, and Ca ... | 02/19/2008 |
| 7270752 | Process for purifying lactams A process is described for purifying lactams, in particular the lactams obtained by cyclizing hydrolysis of an aminoalkylnitrile, and more particularly to the purification by crystallization of ε-caprolactam obtained by cyclizing hydrolysis of aminocapronitrile. Th... | 09/18/2007 |
| 7238803 | Method for producing epsilon-caprolactam ε-Caprolactam is produced by the method comprising the step of introducing a gas comprising cyclohexanone oxime into a layer of solid catalyst particles through a plurality of holes of a gas diffusion plate so that the solid catalyst particles are brought into cont... | 07/03/2007 |
| 7232784 | Metal oxide-containing kenyaite catalyst, method for preparing the same, and method for preparing ε-caprolactam using the same Disclosed are a kenyaite catalyst containing a metal oxide between layers of a layered silicate having kenyaite structure, a method for preparing the same, and a method for preparing ε-caprolactam from cyclohexanone oxime by applying the catalyst to gas phase Beckm... | 06/19/2007 |
| 7214637 | Process for the preparation of MFI-type zeolitic catalysts The present invention relates to a process for the preparation of zeolitic catalysts of the MFI type in spheroidal form. The process consists in emulsifying and consolidating in paraffinic hydrocarbons, in the presence of a non-ionic surface-active agent or a... | 05/08/2007 |
| 7189845 | Method for producing ε-caprolactam The invention provides a method for producing ε-caprolactam comprising the steps of: a reaction process which subjects cyclohexanone oxime to a Beckmann rearrangement reaction in the presence of a solid catalyst; and a catalyst regeneration process which regenerate... | 03/13/2007 |
| 7169348 | Method of making metal oxide nanoparticles in an exfoliated silicate framework A method of producing metal oxide nanoparticles in an exfoliated silicate framework by forming an aqueous exfoliated silicate suspension by mixing a layered clay into water until clear. To which is added an acidic hydrated metal species precursor solution, formed by... | 01/30/2007 |
| 7148381 | Process for the activation of zeolitic catalysts containing titanium and their use in oxidation reactions A process is described for the activation of zeolitic catalysts containing titanium having the formula: xTiO2(1-x)SiO2 wherein x ranges from 0.0001 to 0.4, which consists in treating said materials with a solution of an ammonium salt of a carbo... | 12/12/2006 |
| 7084269 | Process for producing lactam It is an object of the present invention to provide an efficient method of continuously producing a lactam in high-temperature high-pressure water, and the present invention relates to a method of producing a lactam characterized by efficiently synthesizing the lact... | 08/01/2006 |
| 7063825 | Synthetic platy magadiite and octasilicate A method for producing synthetic magadiite, including the step of: heating a liquid aqueous colloidal silica suspension, the liquid aqueous colloidal silica suspension having a mole ratio of sodium hydroxide to silica and a mole ratio of water to silica effective to... | 06/20/2006 |
| 7060645 | Method for manufacturing zeolite and method for manufacturing ε-caprolactam The present invention provides a method for manufacturing a zeolite comprising following steps of: (1): calcining crystals obtained by hydrothermal synthesis reaction of a silicon compound; (2): contact treating a calcined product obtained ... | 06/13/2006 |
| 7045622 | Process for producing lactam It is an object of the present invention to provide a method of continuously producing a lactam in high-temperature high-pressure water, and the present invention relates to a method for producing a lactam characterized by selectively synthesizing the lactam without... | 05/16/2006 |
| 7026474 | Method for producing ε-caprolactam and method for reactivating catalyst for production of ε-caprolactam A method for producing ε-caprolactam and a method for reactivating a zeolite catalyst for the production are provided. In the reactivation step, a zeolite catalyst is allowed to contact a gas containing a carboxylic acid, water and a compound selected from ammonia ... | 04/11/2006 |
| 7022844 | Amide-based compounds, production, recovery, purification and uses thereof Methods are disclosed of producing and purifying at least one amide. In accordance with one of the methods disclosed herein, the at least one amide is produced by providing an organic liquid comprising at least one oxime, providing at least one catalyst, adding the ... | 04/04/2006 |
| 6946553 | Process for producing ε-caprolactam and catalyst for the production Improved processes for producing an ε-caprolactam using a solid catalyst and for producing a catalyst which can be used in the production of ε-caprolactam are provided. In the present invention, a solid catalyst such as a zeolite is treated with an aqueous solutio... | 09/20/2005 |
| 6894163 | Process for preparation of epsilon-caprolactam ε-Caprolactam is produced by contacting cyclohexanone oxime with a solid acid catalyst in the gaseous phase to effect a rearrangement reaction of the cyclohexanone oxime. The solid acid catalyst is produced by calcining a dried catalyst precursor that can be a zeol... | 05/17/2005 |
| 6768013 | Intrinsically safe oxidation process A novel process for the direct oxidation of hydrogen and hydrocarbons is disclosed, where the explosion risks inherent in gas phase oxidations are substantially eliminated. Gaseous oxidation reactants are soluble in a first reaction solvent phase such as a perfluoro... | 07/27/2004 |
| 6750336 | Method of production of lactam A method for producing a lactam by using an organic solvent as a substrate solution, which makes it possible to introduce a high-concentration oxime into flowing high-temperature and high-pressure water, thereby allowing the high-concentration lactam to be synthesiz... | 06/15/2004 |
| 6703501 | Layered silicate catalysts pillared with metal oxide The present invention relates to porous catalysts comprising layered silicate and metal oxides, and a method of preparing &3xb5;-caprolactam from cyclohexanone oxime using the catalyst. This new catalyst can resolve the environmental and safety problems a... | 03/09/2004 |
| 6531595 | Method for producing &3xb5;-caprolactam and reactor for the method A method is provided for producing &3xb5;-caprolactam from cyclohexanone oxime by using a zeolite or non-zeolitic material as a catalyst under gas phase reaction conditions. The method comprises a reaction step converting cyclohexanone oxime into &3xb5;-c... | 03/11/2003 |
| 6482945 | Process for producing epsilon-caprolactam and apparatus for the process A process is provided for producing &3xb5;-caprolactam from cyclohexanone oxime. The process comprises a evaporation step of a mixture of cyclohexanone oxime and a solvent by introducing the mixture into a fluidized bed in which inert particles is fluidiz... | 11/19/2002 |
| 6469163 | Method for production of hydroxylamine sulfate in the conventional process for the synthesis of caprolactam An improvement in the conventional process for the production of caprolactam. The process involves: (a) reacting air with ammonia gas in an ammonia conversion zone to produce nitric oxide; (b) oxidizing a portion of the nitric oxide to nitrogen dioxide to prod... | 10/22/2002 |
| 6432982 | Benzothiophenes, and formulations and methods using same The invention provides novel benzothiophenes of the formula: ##STR1## wherein R1 is --H, --OH, --O(C1 -C4 alkyl), --O--CO(C1 -C6 alkyl), --OSO2 (C4 -C6 alkyl, or --OCOAr wh... | 08/13/2002 |
| 6333411 | Method for production of hydroxylammonium phosphate in the synthesis of caprolactam A method for production of caprolactam. The method involves: (a) reacting air with ammonia gas in an ammonia conversion zone to produce nitric oxide; (b) oxidizing at least a portion of the nitric oxide to nitrogen dioxide to produce an NOx -rich pr... | 12/25/2001 |
| 6291484 | Benzothiophenes This invention provides novel benzothiophene compounds of the formula I: ##STR1## which are useful for the treatment of the various medical conditions associated with postmenopausal syndrome, as well as estrogen dependent diseases including cancer of the ... | 09/18/2001 |
| 6265574 | Process for producing &3xb5;-caprolactam A process for producing &3xb5;-caprolactam is provided which comprises the steps of subjecting cyclohexanone oxime to a gaseous phase Beckmann rearrangement reaction in a fluidized bed system using a solid catalyst and re-generating the catalyst, wherein ... | 07/24/2001 |
| 6258949 | Apparatus and process for producing &3xb5;-caprolactam An apparatus for the production of &3xb5;-caprolactam is provided which comprises (i) a fluidized bed reactor having a solid catalyst therein for subjecting cyclohexanone oxime to a rearrangement reaction to obtain a reaction product containing unreacted ... | 07/10/2001 |
| 6258826 | Pharmaceutical formulations and applications thereof for the treatment of estrogen deprivation syndrome Formulations and applications thereof are described which are useful for the inhibition of various medical conditions associated with estrogen deprivation syndrome including osteoporosis and hyperlipidemia utilizing compounds of structure I represented by... | 07/10/2001 |
| 6251921 | Antithrombotic diamines This application relates to the use as thrombin inhibitors, coagulation inhibitors and thromboembolic disorder agents of diamines of formula I as defined herein. It also provides novel compounds of formula I, processes and intermediates for their preparat... | 06/26/2001 |
| 6252065 | Process for the preparation of lactams from the corresponding cycloalkanone oximes For the preparation of lactams comprising 6 to 12 carbon atoms from the corresponding cycloalkanone oximes by rearrangement according to the Beckmann reaction in the presence of acid, the process is characterized in that use is made of methanesulphonic ac... | 06/26/2001 |
| 6051706 | Method of producing &3xb5;-caprolactam A method is disclosed of producing &3xb5;-caprolactam by the Beckmann rearrangement of cyclohexanone oxime using (B) ଲ zeolites as catalyst.... | 04/18/2000 |
| 5994547 | Process for preparing benzo[b]thiophenes The preparation of benzo[b]thiophenes by the acylation of alkoxy protected starting materials followed by demethylation using essentially odorless thiol compounds are provided herewith. Demethylation may be carried out in the same reaction vessel without ... | 11/30/1999 |
| 5942613 | Process for the preparation of amides from oximes Process for the preparation of amides via the catalytic rearrangement of oximes which comprises putting an oxime in vapor phase in contact with a catalyst selected from a mesoporous silica-alumina having a molar ratio SiO/Al2 O2 of b... | 08/24/1999 |
| 5914398 | Process for the preparation of amides from oximes Process for the preparation of caprolactam by the catalytic rearrangement of cyclohexanone oxime in which a vapour phase oxime is contacting a catalyst selected from an essentially amorphous, micro-mesoporous silica-alumina having a molar ratio SiO2 | 06/22/1999 |
| 5900482 | Process for the preparation of &3xb5;-caprolactam The present invention provides a method for producing &3xb5;-caprolactam, which comprises subjecting cyclohexene to a hydration reaction to obtain cyclohexanol, subjecting the cyclohexanol to a dehydrogenation reaction to obtain cyclohexanone, subjecting ... | 05/04/1999 |
| 5741904 | Method of producing &3xb5;-caprolactam, MFI zeolite catalysts on whose surface symmetrically arranged OH groups are present and to a method of producing them A method of producing &3xb5;-caprolactam from cyclohexanone in the gaseous phase using MFI catalysts on whose surface symmetrically arranged OH groups are present.... | 04/21/1998 |
| 5525725 | Process for producing a high purity caprolactam A process for producing a high purity caprolactam is disclosed in which a crude caprolactam obtained by a catalytic rearrangement of cyclohexanone oxime is subjected (1) to mixing, while stirring, with at least one hydrocarbon selected from the group cons... | 06/11/1996 |
| 5510357 | Benzothiophene compounds as anti-estrogenic agents The present invention provides pharmaceutically active compounds of formula I ##STR1## wherein R1 is --H, --OH, --O(C1 -C4 alkyl), --OCOC6 H5, --OCO (C1 -C6 alkyl), or --OSO... | 04/23/1996 |
