PROCESS FOR PREPARATION OF $g(e)-CAPROLACTAM

Title:

PROCESS FOR PREPARATION OF $g(e)-CAPROLACTAM

Document Type and Number:

WIPO Patent Application WO/2002/064560

Kind Code:

A1

Abstract:

A process for preparing $g(e)-caprolactam by bringing cyclohexanone oxime into contact with a solid acid catalyst under gas-phase reaction conditions to conduct the rearrangement of cyclohexanone oxime, characterized in that the solid acid catalyst is one obtained by firing a dry catalyst precursor comprising zeolite, crystalline clay minerals, and an inorganic oxide of a Group 4, 13, or 14 element of the periodic table which is different from the oxides contained in crystalline clay minerals in the form of crystalline structures and/or a compound capable of forming such an inorganic oxide through firing or in that the above rearrangement is conducted in the presence of a polyhydric alcohol derivative represented by the general formula: R?1¿- O- R?2¿- OH (wherein R?1¿ is C¿1-5? alkyl or phenyl; and R?2¿ is C¿2-5? alkylene).

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Inventors:

TSUNODA TAKASHI (JP)
AKAGISHI KENJI (JP)
SEKIGUCHI MITSUHIRO (JP)

Application Number:

PCT/JP2002/001270

Publication Date:

August 22, 2002

Filing Date:

February 14, 2002

Export Citation:

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Assignee:

ASAHI CHEMICAL IND (JP)
TSUNODA TAKASHI (JP)
AKAGISHI KENJI (JP)
SEKIGUCHI MITSUHIRO (JP)

International Classes:

B01J29/035; C07D201/04; B01J21/16; B01J29/40; (IPC1-7): C07D201/04; B01J29/035

Foreign References:

US5741904A	1998-04-21
JPH07324070A	1995-12-12
EP0057136A2	1982-08-04
EP0236092A2	1987-09-09
EP0056698A2	1982-07-28
EP0388070A1	1990-09-19
JPH06107627A	1994-04-19
EP0544531A1	1993-06-02
EP0544530A1	1993-06-02

Other References: