The quaternary ammonium salt, N,N-diallyl-N-carboethoxymethyl-N-methylammon
ium chloride (7), has been synthesised in excellent yield. The monomer (7),
on polymerisation in water solution using ammonium persulfate as an initia
tor, afforded the polyelectrolyte 8. The polyelectrolyte (8), on acidic hyd
rolysis, gave the polyampholyte 9 in excellent yield. The solution properti
es of these polymers are discussed in detail. The polyampholyte 9 showed 'a
ntipolyelectrolyte' behaviour. (C) 1999 Elsevier Science Ltd. All rights re
served.