Strong cationic polyelectrolytes in powder form based on acrylamide and quaternized or salified dimethylaminoethyl acrylate for flocculation of solid material suspensions and coalescence of emulsions

摘要

Strong cationic polyelectrolytes in powder form based on acrylamide and quaternized or salified dimethylaminoethyl acrylate; and the use thereof for flocculation of solid material suspensions and coalescence of emulsions. Such polyelectrolytes contain in molar proportions more than 50% of cationic units uniformly distributed along the copolymer chains. They are used for flocculating colloidal suspensions and/or coalescing emulsions, especially, in sewage water purification installations.