AQUEOUS COATING COMPOSITION, PROCESS FOR THE PRODUCTION THEREOF AND AQUEOUS COATING

摘要

An aqueous coating composition comprised of an aqueous resin obtained by neutralizing, with a volatile base, a copolymer comprised of (a) 5 to 65 % by weight of hydroxyalkylacrylate or methacrylate in which the alkyl group has 1 to 5 carbon atoms, (b) 5 to 50 % by weight of diacrylate or dimethacrylate of alkylene glycol or polyoxyalkylene glycol, (c) 2 to 20 % by weight of .alpha.,.beta.-monoethylenically unsaturated carboxylic acid, and (d) 20 to 88 % by weight of a vinyl monomer copolymerizable with the above components (a), (b) and (c), and an aqueous amine formaldehyde condensate; and a process for the production of the above aqueous coating composition which comprises copolymerizing the above components (a) to (d) in an organic solvent in the presence of a polymerization initiator to convert these components to a precrosslinked ungelled copolymer, neutralizing said copolymer by adding a volatile base to obtain an aqueous resin, then mixing an aqueous amineformaldehyde condensate with said aqueous resin and thereafter distilling off the organic solvent.