| 摘要 |
<p>The invention relates to a process for the (continuous) preparation of aspartic acid by decomposition of ammonium aspartate in which a concentrated aqueous solution of ammonium aspartate is constantly introduced into a diluent in which water has a low solubility, which diluent is maintained at a temperature at which ammonium aspartate decomposes into aspartic acid and ammonia, and in which the water and the formed ammonia are continuously removed. The invention also relates to a (continuous) process for preparing polysuccinimide starting from fumaric or maleic acid and ammonia involving said process for preparing aspartic acid from ammonium aspartate.</p> |
