| 摘要 |
PURPOSE:To obtain an epoxy resin compsn. for powder coating, which has improved impregnation properties, by incorporating a hardener for epoxy resins in a mixture of a bisphenol S-type epoxy resin and other epoxy resin in a specified ratio. CONSTITUTION:A resin compsn. contains a bisphenol S-type epoxy resin (A) of the formula (wherein n is 0-2), an epoxy resin (B) other than component A, which contains epoxy groups and is solid at room temp. and a hardener (C) in a quantity sufficient to cure components A and B, said component B being used in such a proportion that the quantity of component B accounts for 0-50wt% of the combined quantity of components A and B. When n exceeds 2 in the compd. of the formula, the m.p. of the bisphenol S-type epoxy resin is elevated and paints obtd. from a compsn. contg. such a component have disadvantages in that its curing time is extended, curing energy is increased and impregnation properties are poor.
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