Resin composition for soldering, core solder, flux coat solder and liquid flux

摘要

The present invention provides a resin composition which has improved wettability and is excellent in reliability and processability, and core solder, flux coat solder and liquid flux which use this resin composition. A resin composition comprises a dimer acid which is a reactant of oleic acid and linoleic acid, a trimer acid which is a reactant of oleic acid and linoleic acid, and a dimer acid which is a reactant of oleic acid and linoleic acid. Either hydrogenated dimer acid added or hydrogenated trimer acid obtained by adding hydrogen to trimer acid which is a reactant of oleic acid and linoleic acid, or dimer acid which is a reactant of oleic acid and linoleic acid, oleic acid and Trimeric acid which is a reaction product of linoleic acid, hydrogenated dimer acid obtained by adding hydrogen to dimer acid which is a reaction product of oleic acid and linoleic acid, and water obtained by adding hydrogen to trimer acid which is a reaction product of oleic acid and linoleic acid The total of two or more of the added trimer acid is 1 wt% or more and 40 wt% or less, and the rosin is 30 wt% or more and 99 wt% or less. 【Selection chart】 None