Polyion complex and process for preparation thereof

Claim 1

A process for preparing a polyion complex, which comprises reacting at 0° to 100°C a. a polyanion selected from the group consisting of polymers expressed by the following general formula ##SPC11## wherein p, l and n are the same as defined in section b) below m is 0 or 1; M is --H, an ammonium group, an alkali metal, or an alkaline earth metal; R' is H, or --SO 3 -M + , M + or a combination thereof; OR' is para or meta to the vinyl group of the starting hydroxystyrene; and (CM)' is styrene, methyl methacrylate, methyl acrylate, acrylonitrile, or maleic anhydride, polystyrene sulfonic acid, polyvinyltoluene sulfonic acid, polyvinylsulfonic acid, and alkali metal salts or alkaline earth metal salts of the above acid-type polyanions; with b. a polycation with a polycation of the following general formula ##SPC12## wherein OH is para or meta to --CH--CH 2 , each of R 1 , R 2 and R 3 is an alkyl group, cycloalkyl group, alkenyl group, benzyl group, substituted benzyl group, or any of these groups in which a hydroxyl group has been introduced; ##EQU4## forms a nitrogen-containing or oxygen-containing heterocyclic group, or represents a dialkanolamine or N-alkylalkanolamine; R 3 is CH 2 COOH, H, or O forming a coordination bond with N of a quaternary ammonium group; X is halogen or ROSO 3 , wherein R is a lower alkyl group; p is above 0 but below 2, p' is at least 0 but below 2, and the sum of p and p' is above 0 but below 2; n is at least 3; (CM) represents a vinyl monomer; and l is any number including 0 in a solvent wherein the concentration of the polycation and the polyanion in the solvent is 0.01 to 80% by weight.