Process for the preparation of polycondensates of aspartic acid and use of the polycondensates

摘要

Diclosed is a method for producing condensation polymers of aspartic acid by means of condensation polymerization of aspartic acid at temperatures of 140 to 300 DEG C in the presence of a sulfuric acid catalyst partially neutralized with ammonia and/or amines and the use of the reaction mixtures thus produced or of the reaction mixtures neutralized with alkali metal bases or alkaline earth metal bases as additives in phosphate-free or low-phosphate detergents and cleaners.