Patent · US Active

Process for manufacturing N, N-dialkyl lactamide

US8440860B2 · kind B2 · utility

2Cited by
0References
11Claims
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Assignee

Inventor

Key dates

Filing dateSep 30, 2009
Grant dateMay 14, 2013
Priority date
Expiry dateJun 5, 2030

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C231/02
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.