| 摘要 |
PURPOSE:To obtain the titled paint containing resin component dispersed in the form of fine and uniform particles and suitable for the coating of a can for canned food, by dissolving and dispersing an acrylic resin in an organic solvent solution of a paint resin and emulsifying the dispersion using a phase- conversion emulsification method. CONSTITUTION:The objective paint can be obtained by producing (A) an organic solvent solution containing (i) a resin for paint and (ii) 3-30wt.% (based on the component i) acrylic resin having an acid value of 35-350 and mixing the component A with (B) ammonia or an amine and water, thereby converting the carboxyl group in the component (ii) to ammonium salt or amine salt and, at the same time, self-emulsifying the resin component in the solution to an O/W-type emulsion. The component ii is preferably a resin mixture containing an epoxy resin, especially a bisphenol A epoxy resin having an epoxy equivalent of 400-20,000 and a number-average molecular weight of 1,000-20,000 and a hardener resin for epoxy resin, especially a resol-type phenolic resin at a weight ratio of 95:5-40:60.
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