Method for producing ε-caprolactam and method for...

Details Method for producing ε-caprolactam and method for... Method for producing ε-caprolactam and method for...

2006-04-11

2006-04-11

Kifle, Bruck (Department: 1624)

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

Reexamination Certificate

active

07026474

ABSTRACT:
A method for producing ε-caprolactam and a method for reactivating a zeolite catalyst for the production are provided. In the reactivation step, a zeolite catalyst is allowed to contact a gas containing a carboxylic acid, water and a compound selected from ammonia and amines. In accordance with the present invention, the catalytic activities of a zeolite catalyst used for the Beckmann rearrangement reaction of cyclohexanone oxime can be effectively restored. Consequently, ε-caprolactam may be produced with a high production yield for a long period of time by reusing the catalyst by the method described above.

REFERENCES:
patent: 100 10 189 (2000-09-01), None
patent: 0 494 535 (1992-07-01), None
patent: 0 494 535 (1992-07-01), None
patent: 0 544 531 (1993-06-01), None
patent: 0 570 136 (1993-11-01), None
patent: 1 352 902 (2003-10-01), None

Affiliated with

Also associated with

Rating

Method for producing ε-caprolactam and method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing ε-caprolactam and method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing ε-caprolactam and method for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3537854