Title:
高温ラクタム中和
Document Type and Number:
Japanese Patent JP2013533246
Kind Code:
A
Abstract:
The invention relates to a method for preparing a lactam in a continuous process, comprising forming the lactam and ammonium sulphate by contacting a lactam sulphate contained in an acidic liquid with ammonia, during which forming of lactam heat of reaction is generated, which heat is partially or fully recovered, wherein ammonia is brought into contact with the acidic liquid as part of a liquid aqueous ammonia solution, and wherein the contacting takes place at a temperature of at least 120° C., and wherein the average residence time at a temperature of at least 120° C. is at most 15 minutes, and wherein the ammonium sulphate remains dissolved in a liquid phase during said residence time.
Inventors:
Overing, Hendrick
Guy, Rudolph Phillips Maria
Henrix Anna Christian, Baua
Guy, Rudolph Phillips Maria
Henrix Anna Christian, Baua
Application Number:
JP2013517086A
Publication Date:
August 22, 2013
Filing Date:
July 01, 2011
Export Citation:
Assignee:
DSM IP ASSETS B.V.
International Classes:
C07D201/04; C07D201/16; C07D223/10
Attorney, Agent or Firm:
Ikeda adult
Kazuhiro Yamaguchi
Masakazu Noda
Yoshinori Shimizu
Kazuhiro Yamaguchi
Masakazu Noda
Yoshinori Shimizu