| abstract |
The invention relates to the preparation of (meth)acrylate di-ammonium salts responding to formula (I) wherein R1 represents hydrogen or methyl, each R2 , independently, represents an alkyl comprising from 1 to 4 carbon atoms, each R3, independently, represents an alkyl or an aralkyl and each X- , independently, represents an anion; having a high purity and their use as monomers for the synthesis of polymers useful s cationic flocculants. |