| 摘要 |
PROBLEM TO BE SOLVED: To obtain a room temperature curing one-pack epoxy resin coating composition having coating film performances equivalent to those of a room temperature curing two-pack epoxy resin coating composition and improved storage stability and driability by incorporating a specified epoxy resin, a ketimine, a liquid fatty acid, and a dehydrating agent. SOLUTION: An epoxy resin having an epoxy equivalent of 240-700 is mixed with such an amount of a ketimine of formula I as to give 0.7-1.0 equivalent of active hydrogen atoms per equivalent of the epoxy groups, 0.5-2 mol per mol of the ketimine, of a liquid fatty acid, and at least 10 pts.wt. per 100 pts.wt. ketimine, dehydrating agent of formula II. In the formulae, R1 to R4 are each H, a 1-4C alkyl, or an alkyl-containing or -free phenyl; R5 is hydroxyl-containing alkyl or an alkyl-containing or -free phenyl; Y1 and Y2 are each a 2-6C alkylene; (n) is 0-2; and R is H or methyl. This composition may further contain a coloring pigment such as titanium oxide or red iron oxide, a rust preventive, and an extender pigment such as talc, clay or calcium carbonate.
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