Stable aqueous dispersions based on hydrosoluble polymers containing a cationic dispersing agent with hydrophobic groups

摘要

Dispersing agents for aqueous dispersions of water soluble polymers, prepared by co-polymerization of a water soluble monomer, a hydrophobic monomer, and optionally an amphiphilic monomer. The dispersing agents contain (a) 15-99 mol.% of groups derived by polymerization of water soluble monomer A which is selected from amine and quaternary ammonium group-containing compounds of formula (I), monomers containing carboxylic groups such as (meth) acrylic acid groups, and (meth) acrylamides, N-alkyl acrylamides, and N,N'-dialkyl (meth) acrylamides of 1-6C; (b) 1-85 mol.% of groups derived from a hydrophobic monomer (B) containing ethylenic, vinylic, or 1 - 32C alkyl (meth)acrylates, diene monomers, or fluorinated monomers such as vinylidene chloride or vinylidene fluoride; and (c) 0-30 mol.% of an amphiphilic monomer (C). R1 = H or methyl; Z1 = O, NH or NR2; R2 = 1-6C alkyl or hydroxy alkyl; L = -R3-N(L1)(L2) or -R3-N<+)<L1)(L2)-(L3).X<->; R3 = 1-6C alkyl or hydroxy alkyl; L1, L2, L3 = H, 1-6C alkyl, 5-12C cycloalkyl, or 6-12C aryl or aralkyl; and X = a monovalent anion such as Cl or SNC.