Cross-linked polymine and use thereof for the immobilization of acidic or electrophilic compounds present in a solution

摘要

The invention relates to a process for immobilizing acidic or electrophilic compounds in a solution. The process is characterized in that it consists in bringing a crosslinked polyimine, which is insoluble in the medium and in which the imino groups are -NH-groups, into contact with said compounds and in then separating, by filtration, the modified polyimine obtained. The crosslinked polyimine comprises linear segments composed of -HN-R¹-NH-R²-Ar-R³-units in which R¹, R² and R³ are identical or different alkylene or alkenylene groups and Ar represents an aromatic group. The process is of use for fixing undesirable compounds or for purifying acidic compounds.