| abstract |
The invention relates to the preparation of (meth)acrylate di-ammonium saltsnresponding to formula (I)n nwherein R 1 represents hydrogen or methyl, each R 2 , independently, represents annalkyl comprising from 1 to 4 carbon atoms, each R 3 , independently, represents annalkyl or an aralkyl and each X - , independently, represents an anion; nhaving a high purity and their use as monomers for the synthesis of polymers usefulnas cationic flocculants in water treatment. |