Reactions of an antiseptic, Katamin AB, and its individual analogs, di
methylbenzylalkylammonium chlorides, with water-soluble copolymers of
N-vinyl-2-pyrrolidone with methacrylic, acrylic, and crotonic acids in
aqueous and aqueous-salt solutions was studied by potentiometric titr
ation, turbidimetry, viscometry, and polarized luminescence. Factors w
ere revealed which determine the stability of the resulting dimethylbe
nzylalkylammonium complexes. Equilibrium dissociation constants of the
se complexes in aqueous solutions were determined.