| abstract |
Disclosed is an aqueous emulsion composition of a copolymeric resin having excellent storage stability and capable of forming a coating film of the resin on a substrate surface with excellent adhesion by virtue of introduction of a moiety of the monomeric units having an alkoxy-containing organosilyl group to serve as a silane coupling agent. The organosilyl group-containing moiety is introduced into the resin by the copolymerization of an organosilane compound represented by the general formula Vi--R 1 --SiMe 3-n (OR 2 ) n , in which Vi is a vinyl group, Me is a methyl group, R 1 is a divalent hydrocarbon group having 4 to 12 carbon atoms, R 2 is a monovalent hydrocarbon group having 1 to 6 carbon atoms and n is 1, 2 or 3. As a consequence of isolation of the vinyl group from the silicon atom with intervention of the group R 1 , the organosilane compound has good copolymerizability with other ethylenically unsaturated organic monomers. |