C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
400/5475
C09D 133/00 (2006.01) C09D 133/06 (2006.01) C09D 161/00 (2006.01) C08L 61/20 (2006.01)
Patent
CA 1336630
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.
565478
Inoue Akira
Nakamura Tetsuhisa
Ohno Isamu
Ueno Masanori
Smart & Biggar
Toyo Ink Manufacturing Co. Ltd.
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