A kind of preparation method of sodium n-methyl taurate

Abstract

The invention provides a preparation method of sodium N-methyl taurate, which is prepared by reacting sodium isethionate and methylamine in the presence of a catalyst with ionic liquid as the reaction medium, wherein the catalyst is Zr and W-modified HY molecular sieves. The preparation method of sodium N-methyl taurate provided by the invention can greatly improve the yield and selectivity of sodium N-methyl taurate, catalyst and ionic liquid are all easy to recycle and reuse, and the cost is low, and the temperature in the reaction process And pressure is lower, and process condition is milder, and reaction time obviously shortens, and aftertreatment process is easy, and therefore, the preparation method of sodium N-methyl taurate provided by the invention is particularly suitable for large-scale industrial production.

Description

technical field

[0001] The invention relates to the field of preparation of chemical intermediates, in particular to a preparation method of sodium N-methyl taurate. Background technique

[0002] Sodium N-methyl taurate, also known as sodium methyl taurate, is an important derivative of taurine, which can be used as daily chemicals and pharmaceutical intermediates. In the field of daily chemicals, it can be used to synthesize sodium cocoyl-N-methyl taurate, sodium polyacryloyl dimethyl taurate, polydimethylsiloxane PEG-7 acetyl methyl taurine Sodium acrylate, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer and other high value-added products, these products are generally used as mild surfactants due to their mild properties. With the increasing demand for personal care, the market of mild surfactants shows a rapid growth trend, and the importance of N-methyl taurine sodium series surfactants is also becoming more and more prominent.

[0003] In the synthesi...

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