Non-aqueous dispersions based on capped stabilizers and reactants comprising polyfunctional monomers II

摘要

Crosslinked, preferably acrylic, polymer particles characterized in that the particles are formed by free radical addition polymerization of: (a) between about 0.8 and about 20 weight percent each of first and second ethylenically unsaturated monomers each bearing functionality capable of crosslinking reaction with the other; and (b) between about 98.4 and about 60 weight percent of at least one other monoethylenically unsaturated monomer; in the presence of (I) an organic liquid which is a solvent for the polymerizable monomers, but a non-solvent for the resultant polymer, and (II) polymeric dispersion stabilizer wherein the reaction is carried out at elevated temperatures such that the dispersion polymer forms and then is crosslinked the stabilizer comprises the reaction product of an acrylic polymer-hydrocarbon molecule adduct having hydroxyl functionality with unsaturated monoisocyanate.