| 摘要 |
The ethoxylation catalyst is in the form of a visually homogeneous, liquid suspension or a homogeneous paste and contains the following: calcium salts of low molecular carboxylic or hydroxycarboxylic acids or hydrates of the former, sulfuric acid and an alcohol and/or an ester, or products of their reciprocal reactions, being formed during homogenization, the calcium salt and sulfuric acid having a total concentration in the range 10-65 % by weight. In the method to manufacture the alkoxylenation catalyst, the calcium salt of a low molecular carboxylic or hydrocarboxylic acid or a hydrate (I) of the former is mixed with sulfuric acid (II), and alcohol and/or ester (III) at a temperature in the range 283-368 K, the components (I) and (II) at concentrations in the range form 10 % to 65 % by weight, as well as their proportions, temperatures, time and intensity of mixing eing so selected as to obtain a product in the form of a visually homogeneous, liquid suspension or a visually homogeneous paste, for use as a catalyst in the process of alkoxylenation. |
