Patent ID: 8900376

Claim:
A flux composition for soldering containing a compound of formula (4): wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 independently of one another are a hydrocarbon group or hydrogen atom, R 8 , R 9 and R 10 independently of one another are hydrogen atom, or a hydrocarbon group, an aromatic ring group, a heterocyclic group, or a derivative thereof, and A 4 , A 5 and A 6 independently of one another are hydroxy group or an organic group of formula (5): wherein R 11 is a divalent C 1-12 hydrocarbon group, and at least one of A 4 , A 5 and A 6 is an organic group of formula (5), a is a number of formula (5) present in formula (4).