| Patents for C07D 201 - Preparation, separation, purification, or stabilisation of unsubstituted lactams (2,192) |
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| 10/17/2001 | CN1318034A Method for distilling ammonia |
| 10/17/2001 | CN1317994A Method for reactivating catalyst for cyclizing hydrolysis of aminoitrile into lactam and use of regenerated catalyst for making lactams |
| 10/16/2001 | US6303099 Process for producing pentacyl-type crystalline zeolites and a process for producing ε-caprolactam using the same |
| 10/10/2001 | EP1142871A1 OXIDE CATALYSTS AND PROCESS FOR PRODUCING $g(e)-CAPROLACTAM BY USING THE SAME |
| 10/10/2001 | EP1142858A1 Process for producing aliphatic aldehydic acid and/or aliphatic dicarboxylic acid and catalyst for the production |
| 10/10/2001 | CN1316996A Method for joint production of cyclic lactam and cyclic amine |
| 10/10/2001 | CN1316301A Method for preparing zeolite catalyst |
| 10/10/2001 | CN1072648C Process for preparation of amides from oximes |
| 10/09/2001 | US6300496 Processes for producing epsilon caprolactams |
| 10/04/2001 | WO2001072697A2 Process for the carbonylation of pentenenitrile |
| 10/04/2001 | EP0805801B1 Method for preparing lactam |
| 10/04/2001 | CA2403183A1 Process for the carbonylation of pentenenitrile |
| 10/03/2001 | CN1315941A Process to continuously prepare aqueous mixture of epsi-caprolactam and epsi caprolactam precursors |
| 09/19/2001 | EP0793651B1 Process for preparing caprolactam |
| 09/19/2001 | CN1071305C Preparation of linear chain omega-formyl pentanoic acid or correspondant linear chain formyl nitrile compounds |
| 09/12/2001 | EP1131287A1 Method for treating lactams and method for purifying a lactam |
| 09/12/2001 | EP0906277B1 Method of purifying epsilon-caprolactam |
| 09/12/2001 | CN1312798A Separation of epsilon caprolactam from isomers |
| 09/12/2001 | CN1312797A Method for evaporating aminonitrile |
| 09/05/2001 | CN1070476C Process for prepn. of caprolactam |
| 08/29/2001 | EP0968185B1 Process to continuously prepare an aqueous mixture of (e)-caprolactam and (e)-caprolactam precursors |
| 08/29/2001 | CN1070182C Process for producing caprolactam |
| 08/28/2001 | US6281216 2-aminoquinoline derivatives having d4-agonistic activity |
| 08/09/2001 | WO2001056984A1 PROCESS FOR THE PREPARATION OF ε-CAPROLACTAM |
| 08/09/2001 | WO2001056956A1 A process for the crystallization of non-sucrose substances |
| 08/09/2001 | CA2399220A1 Process for the preparation of e-caprolactam |
| 08/08/2001 | EP1122293A2 Controlled catalytic and thermal sequential pyrolysis and hydrolysis of mixed polymer waste streams to sequentially recover monomers or other high value products |
| 08/08/2001 | EP1122241A1 Process for the preparation of epsilon-caprolactam |
| 08/08/2001 | CN1069313C Method of obtaining caprolactam by hydrolytic splitting of molten polycaprolactam |
| 07/25/2001 | EP0801643B1 Process for continuously cleaning raw caprolactam made from 6-amino capronitrile |
| 07/25/2001 | CN1068875C Process for preparation of epsilon-caprolactam and epsilon-caprolactam |
| 07/24/2001 | US6265574 Subjecting cyclohexanone oxime to gaseous phase beckmann rearrangement in fluidized bed system using solid catalyst, regenerating catalyst by withdrawing from reaction, treating with oxygen-containing gas at elevated temperature, returning |
| 07/18/2001 | EP0968184B1 Process for the preparation of caprolactam in the absence of catalysts by contacting 6-aminocaproic acid derivatives with superheated steam |
| 07/17/2001 | US6262259 Method for preparing lactam |
| 07/12/2001 | WO2001049665A2 Method for purifying lactames |
| 07/12/2001 | CA2396025A1 Method for purifying lactames |
| 07/11/2001 | EP1114034A1 Method for the joint production of a cyclic lactam and a cyclic amine |
| 07/11/2001 | EP1114026A1 Method for simultaneously producing a cyclic lactam and a cyclic amine |
| 07/11/2001 | CN1068311C Process for continuously cleaning raw caprolactam made from 6-amino capronitrile |
| 07/11/2001 | CN1068310C Process for producing cyclic lactames |
| 07/10/2001 | US6258949 Beckmann rearrangement of cyclohexanone oxine using catalyst |
| 07/04/2001 | CN1067990C Process for preparation of amides from oximes |
| 06/27/2001 | EP1109781A1 Process to continuously prepare an aqueous mixture of epsilon-caprolactam and epsilon-caprolactam precursors |
| 06/27/2001 | CN1301252A Method for producing lactams using oligophosphate catalysts |
| 06/26/2001 | US6252068 Crystallization; hydrogenation |
| 06/26/2001 | US6252065 Process for the preparation of lactams from the corresponding cycloalkanone oximes |
| 06/13/2001 | EP1106576A1 Process for the preparation of zeolitic catalysts |
| 06/13/2001 | EP1105374A1 Lactam dehydration method |
| 06/12/2001 | US6245907 Process for producing a high purity caprolactam |
| 06/07/2001 | WO2001040179A2 Process for recovering monomeric units of a nylon from whole carpet |
| 06/07/2001 | WO2001040178A1 Process for the preparation of a carboxylic acid derivative |
| 06/07/2001 | US20010002991 Mixing suspension resulting from synthesis of zeolite with an oligomeric silica sol obtained from the hydrolysis of a tetra-alkyl ortho silicate in the presence of a tetra-alkylammonium hydroxide, rapid spray drying |
| 06/06/2001 | EP1104753A1 Process for recovering monomeric units of a nylon from whole carpet |
| 06/06/2001 | CN1298388A Process for producing epsilon-caprolactam |
| 05/30/2001 | EP1102720A1 Method for distilling ammonia |
| 05/30/2001 | CN1297434A Process for preparation of epsilon-caprolatam |
| 05/30/2001 | CN1297433A Processes for producing epsilon-caprolactams |
| 05/24/2001 | US20010001792 Depolymerizing multi- component waste material comprising polycaprolactam and non-polycaprolactam to form caprolactam comprising contacting waste material with superheated steam at prefered pressure to form caprolactam vapor stream |
| 05/23/2001 | EP1101735A1 Method for the removal of the templating agent from synthetic zeolites |
| 05/23/2001 | CN1296473A Convergent synthesis of alpha-aryl-beta-ketonitriles |
| 05/22/2001 | CA2200892C Process for preparing lauryllactam through photonitrosation of cyclododecane in the presence of trichloronitrosomethane |
| 05/16/2001 | EP1098875A1 Method for cyclizing hydrolysis of an aminonitrile compound into lactam |
| 05/16/2001 | EP1098705A1 Method for reactivating a catalyst for cyclizing hydrolysis of an aminonitrile into a lactam and use of the regenerated catalyst for making lactams |
| 05/09/2001 | EP0892782B1 Process for depolymerizing polycaprolactam processing waste to form caprolactam |
| 05/09/2001 | CN1065530C Process for prepn. of epsilon-caprolactam |
| 05/02/2001 | CN1293660A Process for continuous purification of crude epsi-caprolactam |
| 04/24/2001 | US6222033 Method for producing cyclic lactams |
| 04/18/2001 | CN1064677C Process for preparing caprolactam |
| 04/17/2001 | US6218535 Caprolactam production process |
| 04/12/2001 | WO2001025195A1 Processes for producing epsilon caprolactams |
| 04/11/2001 | EP1089972A1 Method for evaporating aminonitrile |
| 04/11/2001 | CN1064353C Method for simultaneously preparing caprolactam and hexamethylene diamine |
| 04/04/2001 | EP1087942A1 Separation of epsilon caprolactam from isomers |
| 03/29/2001 | WO2001021305A1 Layered silicate catalysts pillared with metal oxide |
| 03/27/2001 | US6207827 Process to separate ε-caprolactam from 6-aminocaproamide and 6-aminocaproamide oligomers |
| 03/27/2001 | US6207824 Using macroporous cation exchange resin |
| 03/20/2001 | US6204379 Reacting pentenoic acid with carbon monoxide, hydrogen and ammonia in presence of a catalyst |
| 03/14/2001 | CN1063171C Process for producing lauryllactam by photonitrosation of cyclododecane in presence of trichloronitrosomethane |
| 02/28/2001 | EP1078669A1 Process and crystallizer for purifying materials or mixtures thereof |
| 02/28/2001 | CN1062558C Mehtod for producing epsilon-caprolactem |
| 02/27/2001 | US6194572 Process to prepare ε-caprolactam |
| 02/27/2001 | US6194570 Process for the preparation of lauryllactam by photonitrosation of cyclododecane and beckmann rearrangement in the presence of methanesulphonic acid |
| 02/22/2001 | WO2001012549A1 Process for treating a mixture comprising an ammonium sulfate solution phase and an aqueous lactam phase |
| 02/20/2001 | US6191274 Recovery of ε-caprolactam |
| 02/14/2001 | EP1076054A1 PROCESS FOR PRODUCING $g(e)-CAPROLACTAM |
| 02/14/2001 | CN1284062A Method for producing lactams |
| 02/14/2001 | CN1061976C Process for prepn of caprolactam |
| 02/13/2001 | US6187917 Depolymerizing carpet in presence of steam to obtain crude caprolactam, condensing or distilling to form aqueous crude caprolactam, removing floating oil, removing water, distilling, crystallizing overheads |
| 02/06/2001 | CA2138884C Process for the preparation of lactame |
| 01/31/2001 | CN1281849A Method for preventing hydroxylamine from decomposing in inorganic solution for preparing caprolactam by using hydroxylamine phosphate oximation method |
| 01/31/2001 | CN1281826A Method for treating benzene extraction waste liquor in production of caprolactam |
| 01/10/2001 | EP1066255A1 Method for producing lactams using oligophosphate catalysts |
| 01/10/2001 | EP1066250A2 A convergent synthesis of alpha-aryl-beta ketonitriles |
| 01/03/2001 | EP1065167A1 A process for producing pentacyl-type crystalline zeolites and a process for producing epsilon-caprolactam using the same |
| 01/03/2001 | CN1278792A A process for the purification of caprolactam obtained from depolymerization of polyamide-containing carpet |
| 12/27/2000 | EP1062203A1 PROCESS FOR THE CONTINUOUS PURIFICATION OF CRUDE $g(e)-CAPROLACTAM |
| 12/07/2000 | WO2000050394A3 A process for recovering caprolactam and steam |
| 11/29/2000 | EP1054864A1 Process for the preparation of epsilon-caprolactam |
| 11/29/2000 | EP1054863A2 2-aminoquinoline derivatives having d4-agonistic activity |
| 11/22/2000 | CN1273971A Method and equipment for prodn. of epsilon-hexanolactam |