POLYMERIZATION OF WATER-SOLUBLE CATIONIC VINYL MONOMERS

This paper summarizes investigations on the radical polymerization of cationic vinyl monomers with respect to the peculiarities of the react ion in aqueous solution, the synthesis of model polymers and polyelect rolytes with regular structure as well as to a new process of stabiliz ed precipitation polymerization. The rate of polymerization depends on the ionic strength of the solution. Random copolymers of diallyldimet hylammonium chloride and acrylamide with variable charge density but e qual molecular weight were synthesized by a feeding technique. Block c opolymers consisting of charged and uncharged monomeric units with dif ferent hydrophilicity are available using macroazoinitiators. The nove l polymers are powerful stabilizers in the precipitation polymerizatio n of water soluble cationic vinyl monomers in aqueous salt solution le ading to a dispersion of fine polymer particles. Polyampholytes with a lternating positively and negatively charged monomeric units in the ba ckbone were obtained by cyclocopolymerization of diallylamine compound s and derivatives of maleic acid.