| 摘要 |
PROBLEM TO BE SOLVED: To provide a flux composition for soldering and a solder paste, which are excellent in soldering wettability, suppress the generation of voids in a soldered part, and are excellent in joint reliability and electric reliability. SOLUTION: The flux composition for soldering contains A: a resin that is obtained by bringing a polyhydric alcohol (a1) and a cyclic acid anhydride (a2) having a six-membered carbocyclic ring structure into a ring-opening half esterification reaction, and B: a silicon compound expressed by the formula (1). In the formula (1), r is 2 or 3, and X is a radical group, which is selected from a hydrogen atom, a bromine atom, a chlorine atom, and hydroxy groups and may be identical to or different from each other. COPYRIGHT: (C)2008,JPO&INPIT
|
