Patent ID: 8211845
Filing Date: 2012-07-03
Classification: B23K,C11D,H05K

Abstract:
1. A cleaner composition for lead-free soldering flux, comprising: (A) glycol ethers, comprising: (a1) 30 to 49 wt % of a glycol ether having a solubility of less than 2% in water at 20° C. and a specific gravity of 0.98 or less, (a2) 3 to 30 wt % of a glycol ether having a solubility of 2 to 10% in water at 20° C. and a specific gravity of 0.98 or less, and (a3) 21 to 60 wt % of a glycol ether soluble in water at 20° C. and having a specific gravity of 0.98 or less; (B) a polyoxyalkylene amine represented by General Formula (1): wherein R (C) a chelating agent that is at least one member selected from the group consisting of (c1) aliphatic hydroxycarboxylic acid chelating agents and (c2)(poly)phosphoric acid chelating agents.