PCT No. PCT / JP96 / 03476 Sec. 371 Date Jul. 22, 1997 Sec. 102(e) Date Jul. 22, 1997 PCT Filed Nov. 28, 1996 PCT Pub. No. WO97 / 20004 PCT Pub. Date May 6, 1997The present invention relates to a curable resin composition for use in water-based
coating materials which includes as essential components an
emulsion polymer (A) containing
tertiary amino groups obtained by carrying out
emulsion polymerization of a vinyl
monomer containing a
tertiary amino group with another copolymerizable vinyl
monomer in a water-based medium, and a compound (B) containing, at least, an
epoxy group and a hydrolyzable silyl group, with this composition preferably also including a water-based compound (C) obtained by adding a neutralizing agent to a
vinyl polymer (I) containing acidic groups and / or
tertiary amino groups so as to neutralize at least 10% of the acidic groups and / or the tertiary amino groups, and then dispersing or dissolving in water, and / or a compound (D), which is not included in compound (B), and contains hydrolyzable silyl group and / or a
silanol group. The
coating material provided by the composition of the present invention is curable at ambient temperatures and demonstrates excellent
coating properties. Moreover, the cured coating obtained from the composition of the present invention offers superior resistance to
weathering, solvents, chemicals and water, and is not problematic with respect to conservation of the environment.