PROCESS TO CONTINUOUSLY PREPARE AN AQUEOUS MIXTURE OF (PERMITTIVY)-CAPROLACTAM AND (PERMITTIVY)-CAPROLACTAM PRECURSORS

• Main Authors: ROBERT PESTMAN, FRANK EDWARD HERKES, JEROEN ANTONIUS FRANCISCUS BOOGERS
• Format: Patent
• Language: English
• Published: 31.05.2004
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL METHODS OF ORGANIC CHEMISTRY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

THIS CONTINUOUS PROCESS FOR PREPARING AN AQUEOUS MIXTURE OF Î-CAPROLACTAM AND 6-AMINOCAPROIC ACID AND/OR 6-AMINOCAPROAMIDE WHICH INVOLVES, AS THE REDUCTIVE AMINATION STEP, CONTINUOUSLY CONTACTING 5-FORMYLVALERIC ACID OR AN ALKYL 5-FORMYLVALERATE IN WATER AS SOLVENT WITH HYDROGEN AND AN EXCESS OF AMMONIA IN THE PRESENCE OF A RUTHENIUM ON CARRIER, AS A CATALYST, WHEREIN THE CARRIER IS AT LEAST ONE OF TITANIUM OXIDE OR ZIRCONIUM OXIDE. THE AQUEOUS MIXTURE CAN BE USED TO PREPARE Î- CAPROLACTAM.