| Patents for C07D 201 - Preparation, separation, purification, or stabilisation of unsubstituted lactams (2,192) |
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| 10/01/1997 | EP0797571A1 Method of obtaining caprolactam by hydrolytic splitting of molten polycaprolactam |
| 10/01/1997 | EP0797570A1 Obtaining caprolactam by cleavage of molten polycaprolactam |
| 09/25/1997 | WO1997034868A1 Process for depolymerizing polycaprolactam processing waste to form caprolactam |
| 09/25/1997 | WO1997030028A3 Recovery of epsilon-caprolactam from aqueous mixtures |
| 09/23/1997 | US5670638 2-bromo- and 2-nitroxy derivatives of 3-bromo- and 3,3-dibromo-4-oxo-azetidines, and preparation |
| 09/23/1997 | CA2129649C Process for producing pyrrolidone and n-alkyl pyrrolidones |
| 09/17/1997 | EP0794943A1 Method for preparing caprolactam |
| 09/16/1997 | US5668277 Depolymerization of polyamides |
| 09/10/1997 | EP0793651A1 Process for preparing caprolactam |
| 09/10/1997 | EP0793650A1 Method of producing caprolactam |
| 08/28/1997 | WO1997030974A1 PROCESS FOR THE PREPARATION OF A MIXTURE OF ε-CAPROLACTAM, 6-AMINOCAPROIC ACID AND 6-AMINOCAPROIC AMIDE |
| 08/28/1997 | WO1997030973A1 PROCESS TO PREPARE ε-CAPROLACTAM FROM 6-AMINOCAPROIC ACID |
| 08/28/1997 | CA2247463A1 Process to prepare .epsilon.-caprolactam from 6-aminocaproic acid |
| 08/21/1997 | WO1997030028A2 Recovery of epsilon-caprolactam from aqueous mixtures |
| 08/21/1997 | CA2246459A1 Recovery of .epsilon.-caprolactam from aqueous mixtures |
| 08/12/1997 | US5656757 Monomer recovery from multi-component materials |
| 07/29/1997 | US5652362 From aminohexanoic acid or ester |
| 07/24/1997 | WO1997026300A1 Combinatorial process for preparing substituted indane libraries |
| 07/24/1997 | WO1997025983A1 Indane derivatives for antipsychotic compositions |
| 07/24/1997 | CA2243717A1 Indane derivatives for antipsychotic compositions |
| 07/24/1997 | CA2243500A1 Combinatorial process for preparing substituted indane libraries |
| 07/23/1997 | EP0785188A1 Process for the preparation of epsilon-caprolactam |
| 07/09/1997 | CN1154104A Process for producing cyclic lactames |
| 07/08/1997 | US5646277 Preparation of caoprolactam |
| 07/03/1997 | WO1997023454A1 Process for simultaneously preparing caprolactam and hexamethylene diamine |
| 07/01/1997 | CA2064658C Reclaiming e-caprolactam from nylon 6 carpet |
| 06/26/1997 | DE19548289A1 Verfahren zur gleichzeitigen Herstellung von Caprolactam und Hexamethylendiamin Process for the simultaneous preparation of caprolactam and hexamethylenediamine |
| 06/18/1997 | EP0664787B1 Depolymerization of nylon 6,6 (and optionally) nylon 6 to obtain hexamethylene diamine (and caprolactam) |
| 06/12/1997 | WO1997020813A1 Process for depolymerizing nylon-containing waste to form caprolactam by superheated steam in the absence of catalysts |
| 06/10/1997 | US5637700 Purification of caprolactam |
| 06/10/1997 | US5637581 Preparations containing 2-bromo- and 2-nitroxy derivatives of 3-bromo- and 3,3-dibromo-4-oxo-azetidines |
| 06/03/1997 | CA2084865C Method of recovering caprolactam from mixed waste |
| 04/23/1997 | EP0769004A1 Process for producing cyclic lactames |
| 02/20/1997 | WO1997006137A1 Recovery of caprolactam from nylon-6 scrap |
| 02/06/1997 | WO1997003956A1 PROCESS FOR THE PREPARATION OF ε-CAPROLACTAM |
| 02/06/1997 | WO1997003953A1 Derivatives of benzosulphonamides as inhibitors of the enzyme cyclo-oxygenase ii |
| 02/06/1997 | CA2230036A1 Derivatives of benzosulphonamides as inhibitors of the enzyme cyclooxygenase ii |
| 01/30/1997 | WO1997003048A1 Process for the recovery of caprolactam from waste containing nylon by extraction with alkyl phenols |
| 01/30/1997 | CA2226850A1 Process for the recovery of caprolactam from waste containing nylon |
| 01/29/1997 | CN1141626A Process for mfg. caprolactam |
| 01/29/1997 | CN1141290A Depolymerization of polyamides |
| 01/29/1997 | CN1141289A Process for prepn. of epsilon-caprolactam |
| 01/16/1997 | WO1997001525A1 Process for separating pivalic acid from spent reaction mixtures |
| 01/16/1997 | CA2224806A1 Process for separating pivalic acid from spent reaction mixtures |
| 01/14/1997 | US5594137 Process for the preparation of caprolactam |
| 01/14/1997 | US5594134 Reacting a lactam with anhydride in the presence oflithium salt and amine base |
| 01/09/1997 | WO1997000846A1 Nitric acid hydrolysis of polyamides |
| 01/08/1997 | CN1139920A Process for manufacturing caprolactam |
| 12/25/1996 | CN1138578A Method for preparation of lactan |
| 12/25/1996 | CN1138577A Process for preparation of epsilon-caprolactam and epsilon-caprolactam |
| 12/25/1996 | CN1138576A Method for producing epsilon-caprolactam |
| 12/18/1996 | EP0748797A1 Process for the preparation of caprolactam from aminocapronitrile |
| 12/18/1996 | CN1138319A Process for the preparation of an aldehyde |
| 12/05/1996 | WO1996038407A1 Process for producing cyclohexanonoxim and caprolactam |
| 12/05/1996 | DE19520271A1 Verfahren zur Herstellung von Cyclohexanonoxim und Caprolactam A process for the preparation of cyclohexanone oxime and caprolactam |
| 11/28/1996 | DE19503963C1 Prodn. of caprolactam from waste polyamide-6 |
| 11/21/1996 | WO1996036601A1 Process for producing caprolactam |
| 11/21/1996 | WO1996036600A1 Titanium dioxide-catalysed cyclisation in the liquid phase of 6-amino caproic acid nitrile to caprolactam |
| 11/21/1996 | DE19517823A1 Verfahren zur Herstellung von Caprolactam A process for the preparation of caprolactam |
| 11/21/1996 | DE19517821A1 Verfahren zur Herstellung von Caprolactam A process for the preparation of caprolactam |
| 11/21/1996 | CA2218132A1 The preparation of caprolactam |
| 11/21/1996 | CA2218130A1 Preparation of caprolactam |
| 11/20/1996 | EP0742788A1 Process for the preparation of a linear formyl compound |
| 11/07/1996 | DE19608660A1 Prodn. of epsilon-caprolactam from cyclohexanone oxime |
| 11/06/1996 | EP0740648A1 Lewis acid catalyzed ammonolysis of nylon |
| 11/05/1996 | US5571913 Rearrangement of alicyclic ketoxime in the presence of lactim-o-sulfonic acid in the presence of acid cation exchanger |
| 10/30/1996 | EP0739889A1 Process for the continuous production of macrocyclic compounds |
| 10/29/1996 | CA2106797C Semi-continuous depolymerization of nylon 6 polymer |
| 10/16/1996 | EP0737666A1 Depolymerization of polyamides |
| 10/15/1996 | CA2174059A1 Depolymerization of polyamides |
| 09/17/1996 | US5556890 Reclaiming ε-caprolactam from carpet waste |
| 09/04/1996 | EP0729944A2 Process for the preparation of epsilon-caprolactam |
| 09/04/1996 | EP0729943A2 Process for the preparation of epsilon-caprolactam and epsilon-caprolactam precursors |
| 09/04/1996 | EP0729454A1 Process for manufacturing caprolactam |
| 09/04/1996 | EP0729453A1 Process for manufacturing caprolactam |
| 09/04/1996 | CN1130181A Method for producing amide acetate and caprolactam |
| 09/02/1996 | CA2170706A1 Process for the preparation of ¹-caprolactam and ¹-caprolactam precursors |
| 09/02/1996 | CA2170705A1 Process for the preparation of ¹-caprolactam |
| 08/01/1996 | WO1996022974A1 Method for preparing lactam |
| 07/23/1996 | US5539106 Catalytic hydrogenation for purification |
| 07/16/1996 | US5536831 Obtaining caprolactam by cleavage of molten polycaprolactam |
| 07/11/1996 | WO1996020931A1 Method of simultaneously preparing caprolactam and hexamethylene diamine |
| 07/11/1996 | WO1996020923A1 Process for continuously cleaning raw caprolactam made from 6-amino capronitrile |
| 07/11/1996 | DE19500222A1 Verfahren zur gleichzeitigen Herstellung von Caprolactam und Hexamethylendiamin Process for the simultaneous preparation of caprolactam and hexamethylenediamine |
| 06/20/1996 | WO1996018614A1 Obtaining caprolactam by depolymerization of molten polycaprolactam |
| 06/20/1996 | WO1996018613A1 Method of obtaining caprolactam by hydrolytic splitting of molten polycaprolactam |
| 06/20/1996 | WO1996018612A1 Obtaining caprolactam by cleavage of molten polycaprolactam |
| 06/20/1996 | CA2208222A1 Obtaining caprolactam by depolymerization of molten polycaprolactam |
| 06/13/1996 | WO1996017826A1 Method for preparing caprolactam |
| 06/11/1996 | US5525725 Process for producing a high purity caprolactam |
| 06/06/1996 | WO1996016937A1 Process for preparing caprolactam |
| 06/06/1996 | WO1996016936A1 Method of producing caprolactam |
| 06/06/1996 | CA2207315A1 Preparation of caprolactam |
| 06/05/1996 | DE4443125A1 Verfahren zur Herstellung von Caprolactam A process for the preparation of caprolactam |
| 05/23/1996 | DE4440685A1 New 4-substd. epsilon caprolactam(s), useful as monomers |
| 04/24/1996 | EP0625142B1 Process for producing pyrrolidone and n-alkyl pyrrolidones |
| 04/02/1996 | US5504260 Selective reaction with elemental oxygen in presence of carbon monoxide and palladium-copper catalyst |
| 03/26/1996 | US5502185 Cyclization, catalyst |
| 03/26/1996 | US5502184 Catalytic hydrogenation |
| 03/05/1996 | US5496941 Process for continuous purification of crude caprolactam prepared from 6-aminocapronitrile |