| 摘要 |
Described is a process for producing an ethanolamine mixture of low diethanolamine content, the process comprising a first ethoxylation reaction using aqueous ammonia and an excess of ethylene oxide, also including the elimination of the residual water and ammonia, and a second ethoxylation reaction performed over the product obtained from the first ethoxylation. The product thus obtained has a high content of TEA and an important amount of amine glycol ether which, along with the ethanolamines generate a composition that is useful for the manufacture of softeners, as an intermediary for the manufacture of detergents and it is widely used in the cosmetic industry. As an alternative, the ethoxylation stage may be applied over a pure ethanolamine or a mixture thereof, and obtain a product with properties similar to those products obtained from ammonia and ethylene oxide. |
