Invention Grant
US08399658B2 Method for isolation of laurolactam from a laurolactam synthesis process stream
有权
从十二内酰胺合成工艺流中分离十二内酰胺的方法
- Patent Title: Method for isolation of laurolactam from a laurolactam synthesis process stream
- Patent Title (中): 从十二内酰胺合成工艺流中分离十二内酰胺的方法
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Application No.: US12951289Application Date: 2010-11-22
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Publication No.: US08399658B2Publication Date: 2013-03-19
- Inventor: Axel Hengstermann , Ralf Meier , Daniel Demicoli , Martin Roos , Bernd Guenzel , Frank Huebner
- Applicant: Axel Hengstermann , Ralf Meier , Daniel Demicoli , Martin Roos , Bernd Guenzel , Frank Huebner
- Applicant Address: DE Essen
- Assignee: Evonik Degussa GmbH
- Current Assignee: Evonik Degussa GmbH
- Current Assignee Address: DE Essen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102009046910 20091120
- Main IPC: C07D201/16
- IPC: C07D201/16
Abstract:
A process for purifying laurolactam by means of integrated connection of distillation and crystallization is provided. The crystallization is performed as a solution or melt crystallization. The process reduces thermal stress applied to the laurolactam stream and improved yields are obtained. Raw materials are recovered and recycled in the production sequence.
Public/Granted literature
- US20110124855A1 METHOD FOR ISOLATION OF LAUROLACTAM FROM A LAUROLACTAM SYNTHESIS PROCESS STREAM Public/Granted day:2011-05-26
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