Invention Grant
- Patent Title: Process for preparing m-chloroaromatics
- Patent Title (中): 制备m-氯代芳族化合物的方法
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Application No.: US232550Application Date: 1994-04-22
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Publication No.: US5466881APublication Date: 1995-11-14
- Inventor: Michael Pies , Helmut Fiege , Lothar Puppe , Josef Kasbauer
- Applicant: Michael Pies , Helmut Fiege , Lothar Puppe , Josef Kasbauer
- Applicant Address: DEX Leverkusen
- Assignee: Bayer Aktiengesellschaft
- Current Assignee: Bayer Aktiengesellschaft
- Current Assignee Address: DEX Leverkusen
- Priority: DEX4314299.0 19930430
- Main IPC: B01J29/40
- IPC: B01J29/40 ; C07B61/00 ; C07C17/358 ; C07C25/02 ; C07C25/08 ; C07C17/00 ; C07C25/00
Abstract:
In the preparation of m-chloroaromatics by isomerizing corresponding o- and/or p-chloroaromatics in the liquid phase over zeolites, the activity of the zeolites remains at a high level for a particularly long time if the process is carried out in the presence of from 1 to 30 mol % of hydrogen, based on the chloroaromatics used.
Public/Granted literature
- US6117332A Method for using a center core cartridge feeder insert Public/Granted day:2000-09-12
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