| Patents for C07D 201 - Preparation, separation, purification, or stabilisation of unsubstituted lactams (2,192) |
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| 12/29/1999 | CA2337137A1 Method for evaporating aminonitrile |
| 12/23/1999 | WO1999065873A1 Separation of epsilon caprolactam from isomers |
| 12/23/1999 | CA2335114A1 Separation of epsilon caprolactam from isomers |
| 12/21/1999 | US6004948 Derivatives of benzosulphonamides as inhibitors of the enzyme cyclooxygenase II |
| 12/01/1999 | CN1237158A Method for treating lactams |
| 11/30/1999 | US5994565 Process for producing purified ε-caprolactone |
| 11/25/1999 | WO1999040068A3 2-aminoquinoline derivatives having d4-agonistic activity |
| 11/24/1999 | EP0958278A1 Process to separate epsilon-caprolactam from 6-aminocaproamide and 6-aminocaproamide oligomers |
| 11/23/1999 | US5990351 Process for separating pivalic acid from spent reaction mixtures |
| 11/23/1999 | US5990306 Process for the purification of caprolactam obtained from the depolymerization of polyamide-containing carpet |
| 11/18/1999 | WO1999051568A3 A CONVERGENT SYNTHESIS OF α-ARYL-β-KETONITRILES |
| 11/18/1999 | DE19821700A1 Production of epsilon-caprolactam useful in nylon 6 production |
| 11/17/1999 | CN1235595A Preparation of 'epsilon'-caprolactam |
| 11/16/1999 | US5986092 Dehydrohalogenation, basification and phase transfer catalyst |
| 11/04/1999 | WO1999055671A1 PROCESS FOR PRODUCING ε-CAPROLACTAM |
| 11/02/1999 | US5977356 Process for preparing caprolactam |
| 11/02/1999 | US5977193 Reclaiming epsilon-caprolactam from nylon 6 carpet |
| 10/26/1999 | US5973143 Process to prepare ε-caprolactam from 6-aminocaproic acid |
| 10/14/1999 | WO1999051568A2 A CONVERGENT SYNTHESIS OF α-ARYL-β-KETONITRILES |
| 10/05/1999 | US5962681 Passing the aqueous extracts continuously through an evaporator in such a way that the inorganic contaminants become deposited on the heat exchanger surfaces of the evaporator and the caprolactam monomer and oligomer is |
| 10/05/1999 | US5962680 Hydroxycarbonylation of alkadienes, neutralization of resulting pentenoic acid, hydrkoformylation, reductive amination of resulting formylvaleric acid |
| 09/30/1999 | WO1999048867A1 PROCESS FOR THE CONTINUOUS PURIFICATION OF CRUDE ε-CAPROLACTAM |
| 09/30/1999 | CA2324305A1 Process for the continuous purification of crude .epsilon.-caprolactam |
| 09/23/1999 | WO1999047500A1 Method for producing lactams using oligophosphate catalysts |
| 09/23/1999 | DE19811880A1 Preparation of lactam by gas phase cyclizing hydrolysis of aminonitrile, useful e.g. as solvent and in polyamide production |
| 09/23/1999 | CA2323616A1 Method for producing lactams using oligophosphate catalysts |
| 09/22/1999 | EP0943608A1 Process for the continuous purification of crude epsilon--caprolactam |
| 09/15/1999 | EP0794943B1 Method for preparing caprolactam |
| 09/15/1999 | CN1228766A Process for separation of ketoxime or aldoxime from amide |
| 09/14/1999 | US5952493 Comprising reacting crude caprolactam with complex hydride of boron or of aluminum |
| 09/07/1999 | US5948908 Process for depolymerizing polycaprolactam processing waste to form caprolactam |
| 09/01/1999 | EP0938473A1 Method for treating lactams |
| 09/01/1999 | CN1227541A Method for purifying lactams |
| 08/26/1999 | WO1999042440A1 PROCESS FOR THE PREPARATION OF ε-CAPROLACTAM |
| 08/26/1999 | CA2320901A1 Process for the preparation of .epsilon.-caprolactam |
| 08/25/1999 | EP0937712A1 Process for the preparation of E-caprolactam |
| 08/25/1999 | EP0937039A1 Preparation of caprolactam |
| 08/25/1999 | CN1226553A Process for producing high purity caprolactam |
| 08/24/1999 | US5942613 Epsilon-caprolactam produced via the catalystic rearrangement of cyclohexanone oxime in vapor phase with a silica-alumina catalyst having a specific x-ray diffraction pattern, molar ratio, high surface area and high pore volume; selectivity |
| 08/12/1999 | WO1999040068A2 2-aminoquinoline derivatives having d4-agonistic activity |
| 08/11/1999 | EP0934265A1 Amidinophenyl-pyrrolidines, -pyrrolines, and -isoxazolidines and derivatives thereof |
| 08/11/1999 | CN1225628A Process for preparing caprolactam from 6-aminocapronitrile |
| 08/10/1999 | US5936114 Preparation of lactams from aliphatic α, ω-dinitriles |
| 08/03/1999 | US5932724 Process for depolymerizing nylon-containing waste to form caprolactam |
| 07/28/1999 | EP0931061A1 Process for the separation of a ketoxime or aldoxime from an amide |
| 07/27/1999 | US5929234 Process for depolymerizing nylon-containing whole carpet to form caprolactam |
| 07/20/1999 | US5925754 Epsilon caprolactam compositions |
| 07/13/1999 | US5922589 Preparation of lactams from aliphatic α,ω-Dinitiles |
| 07/07/1999 | EP0927160A1 PROCESS FOR THE PREPARATION OF $g(e)-CAPROLACTAM |
| 07/07/1999 | CN1222143A Method of purifying 'epsilon'-caprolactam |
| 06/22/1999 | US5914398 Catalytic rearrangement |
| 06/16/1999 | EP0922027A1 Method for purifying lactams |
| 06/10/1999 | WO1999028296A1 Method for producing lactams |
| 06/10/1999 | DE19856205A1 Production of high-purity caprolactam from cyclohexene via cyclohexanol |
| 06/10/1999 | DE19753377A1 Preparation of epsilon-caprolactam with low dimer and water content |
| 06/10/1999 | CA2311668A1 Method for producing lactams |
| 06/09/1999 | CN1219167A Preparation of Lactams from aliphatic alpha, omega-dinitriles |
| 06/02/1999 | DE19753301A1 Verfahren zur Herstellung von Lactamen Process for the preparation of lactams |
| 06/01/1999 | US5908954 Chemical intermediate |
| 05/26/1999 | CN1217712A Recovery of epsilon-caprolactam |
| 05/12/1999 | CN1216529A Process for the preparation of a mixture of 'epsilon'-caprolactam, 6-aminocaproic acid and 6-aminocaproic amide |
| 05/12/1999 | CN1216528A Process to prepare 'epsilon'-caprolactam from 6-aminocaproic acid |
| 05/06/1999 | EP0912508A1 Process for preparing caprolactam from 6-aminocapronitrile |
| 05/04/1999 | US5900482 Hydration of cyclohexene to cyclohexanol, dehydration tocyclohexanone, forming cyclohexanone oxime, beckmannrearragement; by-product inhibition |
| 05/04/1999 | CA2003552C Preparation of caprolactam |
| 05/04/1999 | CA2003352C Preparation of caprolactam |
| 04/07/1999 | EP0906277A1 Method of purifying epsilon-caprolactam |
| 04/06/1999 | US5892036 Process for the preparation of 2-bromo- and 2-nitroxy derivatives of 3-bromo- and 3,3-dibromo-4-oxo-azetidines |
| 03/31/1999 | EP0742788B1 Process for the preparation of a linear formyl compound |
| 03/31/1999 | EP0729454B1 Process for manufacturing caprolactam |
| 03/24/1999 | EP0797571B1 Method of obtaining caprolactam by hydrolytic splitting of molten polycaprolactam |
| 03/17/1999 | EP0901468A1 PREPARATION OF LACTAMS FROM ALIPHATIC $g(a),$g(v)-DINITRILES |
| 03/17/1999 | CN1210855A Depolymerisation of polyamides |
| 03/11/1999 | WO1999011616A1 A process for the purification of caprolactam obtained from the depolymerization of polyamide-containing carpet |
| 03/11/1999 | WO1999011615A1 Mouldable materials which can be used as a catalyst |
| 03/11/1999 | WO1999011614A1 Caprolactam production process |
| 03/11/1999 | WO1999011613A1 Use of shaped bodies as a catalyst for the production of caprolactam |
| 03/11/1999 | CA2302441A1 Mouldable materials which can be used as a catalyst |
| 03/11/1999 | CA2302440A1 Caprolactam production process |
| 03/11/1999 | CA2302439A1 Use of shaped bodies as a catalyst for the production of caprolactam |
| 03/10/1999 | EP0900187A1 Processes for producing hydroxyaldehydes |
| 03/04/1999 | WO1999010519A1 Process for preparing enantiomerically enriched n-derivatised lactams |
| 03/04/1999 | DE19738464A1 Verwendung von Formkörpern als Katalysator zur Herstellung von Caprolactam The use of moldings as a catalyst for the production of caprolactam |
| 03/04/1999 | DE19738463A1 Verfahren zur Herstellung von Caprolactam A process for the preparation of caprolactam |
| 03/04/1999 | CA2295017A1 Process for preparing enantiomerically enriched n-derivatised lactams |
| 03/02/1999 | US5877314 Process to continuously prepare an aqueous mixture of episilon caprolactum and episilon caprolactum precursors |
| 02/23/1999 | US5874575 Preparation of caprolactam |
| 02/09/1999 | US5869654 Contacting polycaprolactam waste with superheated steam, removing formed vapor stream, separating caprolactam, purifying, polymerizing |
| 01/27/1999 | EP0892782A1 Process for depolymerizing polycaprolactam processing waste to form caprolactam |
| 01/20/1999 | EP0891969A1 Depolymerisation of polyamides |
| 01/20/1999 | EP0891327A2 Recovery of epsilon-caprolactam from aqueous mixtures |
| 01/20/1999 | CN1205691A Process for simultaneously preparing caprolactan and hexamethylene diamine |
| 01/20/1999 | CN1205330A Depolymerization of polymides |
| 01/14/1999 | CA2243126A1 Depolymerization of polyamides |
| 01/12/1999 | US5858736 Contacting dinitrile in aqueous mixture with enzyme catalyst having aliphatic nitrilase activity or combination of nitrile hydratase and amidase activity, contacting product with hydrogen and hydrogenation catalyst to produce lactam |
| 12/15/1998 | CA1340253C B-lactam antibiotics |
| 12/09/1998 | EP0882710A1 Method for the preparation of caprolactam and preparation of catalysts for this method |
| 12/09/1998 | EP0882018A1 Process for the preparation of a mixture of epsilon-caprolactam, 6-aminocaproic acid and 6-aminocaproic amide |
| 12/09/1998 | EP0882017A1 Process to prepare epsilon-caprolactam from 6-aminocaproic acid |
| 12/08/1998 | US5847119 2-bromo-and derivatives of 3-bromo-and 3,3-dibromo-4-oxo-azetidines, processes for the preparation thereof and use thereof |