| 摘要 |
PROBLEM TO BE SOLVED: To provide a curable flux capable of surely joining with soldering, retaining electrical insulating properties even in high-temperature and high- humidity atmosphere and enabling joining with soldering having high joining strength and reliability. SOLUTION: This curable flux is obtained by compounding, as essential components, (A) an epoxy resin with (B) a resin having at least one or more hemiacetal ester skeletons producing a carboxy group-containing compound and a vinyl ether resin.
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