PURPOSE: To achieve protection of the hold in collier from corrosion with coating film of high performance, excellent heat and chemical resistance, and high mechanical strength, by applying a coating formulation comprising glass flakes and an epoxy resin containing both unsaturated polyester and vinyl ester resins.
CONSTITUTION: A coating composition is first prepared by incorporating (A) 100 parts by wt. of an epoxy resin (pref. with an epoxy equivalent of 160W500) containing, (i) an unsaturated polyester resin (e.g. an isophthalic unsaturated one) and (ii) a vinyl ester resin (epoxy acrylate) with (B) 10W100 parts by wt. of glass flakes etc. The objective corrosionproof treatment is carried out by using a coating formulation prepared by adding, just before application, (C) a curing agent (e.g. a polyamide amine), or both curing catalyst and accelerator to the above composition.
SANO SHIYUNICHI
OKAJIMA MASATO
