Invention Grant
- Patent Title: Process for manufacturing N, N-dialkyl lactamide
- Patent Title (中): 制备N,N-二烷基乳酰胺的方法
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Application No.: US13121275Application Date: 2009-09-30
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Publication No.: US08440860B2Publication Date: 2013-05-14
- Inventor: Jan Van Krieken
- Applicant: Jan Van Krieken
- Applicant Address: NL Gorinchem
- Assignee: Purac Biochem BV
- Current Assignee: Purac Biochem BV
- Current Assignee Address: NL Gorinchem
- Agency: Oliff & Berridge, PLC
- Priority: EP08165639 20081001
- International Application: PCT/EP2009/062683 WO 20090930
- International Announcement: WO2010/037776 WO 20100408
- Main IPC: C07C231/02
- IPC: C07C231/02

Abstract:
A process for manufacturing dialkyl lactamide including reacting lactide and dialkylamine selected from one or more of dimethylamine, diethylamine, and methylethylamine to form a reaction mixture which includes dialkyl lactamide selected from N,N-dimethyl lactamide, N,N-diethyl lactamide, and N,N-methylethyl lactamide, N,N-dialkyl lactoyl lactamide, and dialkylamine, subjecting the reaction mixture to a separation step to form a product stream including N,N-dialkyl lactamide, a first recycle stream including dialkylamine and a second recycle stream including N,N-dialkyl lactoyl lactamide, feeding the recycle streams to the reaction step, and isolating the product stream. The process allows the manufacture of N,N-dimethyl lactamide, N,N-diethyl lactamide, and N,N-methylethyl lactamide on a commercial scale.
Public/Granted literature
- US20110178339A1 PROCESS FOR MANUFACTURING N, N-DIALKYL LACTAMIDE Public/Granted day:2011-07-21
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