METHOD FOR PRODUCING N-ETHYL-DIISOPROPYLAMINE

摘要

A process for preparing N-ethyldiisopropylamine by reacting acetaldehyde with diisopropylamine and hydrogen at elevated temperature and under pressure in the presence of a heterogeneous hydrogenation catalyst, the catalyst being a supported transition metal catalyst comprising Pd and/or Pt as catalytically active metal, wherein the diisopropylamine used has a purity of 58% to 94% by weight and impurities as follows:;3% to 20% by weight of water, 3% to 20% by weight of isopropanol, 0% to 2% by weight of others.

主权项

1. A process for preparing N-ethyldiisopropylamine comprising reacting acetaldehyde with diisopropylamine and hydrogen at elevated temperature and under pressure in the presence of a heterogeneous hydrogenation catalyst, the catalyst being a supported transition metal catalyst comprising Pd and/or Pt as catalytically active metal,
wherein the diisopropylamine is obtained as a by-product of a reaction of isopropanol with ammonia to form monoisopropylamine, the diisopropylamine having a purity of 58% to 94% by weight and impurities that include 3% to 20% by weight of water, and 3% to 20% by weight of isopropanol.