Clouding of a cationic hydrophobically associating comb polymer

A novel cationic hydrophobically associating comb polymer, containing poly(oxyethylene) chains in the back-bone, is described and investigated with respect to the aqueous solubility by cloud point measurements. Cloud points were investigated as a function of polymer charge, poly(oxyethylene) chain length and concentrations of added NaCl and could be interpreted in terms of the aqueous behavior of poly(oxyethylene) chains, general electrostatic effects, salting-out effects for nonionic polymer chains and polymer association.