Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...
Patent
1989-04-14
1990-05-22
Bond, Robert T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Unsubstituted hydrocarbyl chain between the ring and the -c-...
540535, C07D20104
Patent
active
049279246
ABSTRACT:
A process is provided for catalytically converting cyclohexanone oxime to epsilon caprolactam. The conversion is characterized by exceptionally high selectivity and reduced rate of catalyst aging, even at single pass conversion above 90 percent. The conversion catalyst is a medium pore size crystalline zeolite exemplified by ZSM-5 which has low acid activity. Recycling unconverted oxime provides excellent ultimate yield of caprolactam.
REFERENCES:
patent: 3503958 (1970-03-01), Landis
patent: 4359421 (1982-11-01), Bell et al.
patent: 4697010 (1987-09-01), McMahon
patent: 4709024 (1987-11-01), Sato et al.
Bell Weldon K.
Haag Werner O.
Bond Robert T.
McKillop Alexander J.
Mobil Oil Corp.
Santini Dennis P.
Speciale Charles J.
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