WATER-SOLUBLE SOFT-BRAZING AID

摘要

A water-soluble soft-brazing aid which has a group exhibiting the action of a water-insoluble soft-brazing aid as a hydrophobic group, and has a hydrophilic group in accordance with this hydrophobic group. Also disclosed is a water-soluble soft-brazing aid for general-purpose use, obtained by the addition of a material capable of reinforcing its property as a soft-brazing aid.