FLUX FOR LOW-TEMPERATURE SOLDERING Russian patent published in 2012 - IPC B23K35/363 

FIELD: process engineering.

SUBSTANCE: proposed flux may be used wiring radioelectric components and IC on p.c.b. operated in harsh environment. Proposed flux contains the following components, in wt %: rosin ester-base synthetic resin - 10-20, activator consisting of carboxylic acid - 2-10, organic solvent representing mix of alcohols (40-60) and glycols (20). All components are ecologically safe and based on natural biodegradable stock. Solder does not contain amines, surfactants and water.

EFFECT: high surface electrical resistance.

4 tbl, 1 ex