Halogen-free foam fluxes

Details Halogen-free foam fluxes Halogen-free foam fluxes

1985-10-23

1987-11-24

Rosenberg, Peter D.

Metal treatment

Compositions

Fluxing

148 26, B23K 3534

Patent

active

047087510

ABSTRACT:
Halogen-free foam fluxes for mechanized soft soldering of heavy metals consisting of a solvent, an activator based on one or more dicarboxylic acids having from 4 to 12 carbon atoms, optionally rosin and/or further additives, and a foaming agent having an activator content of less than 3.5% by weight, a content of rosin and/or further conventional additives of less than 2% by weight, a content of the foaming agent of from 0.2 to 3% by weight, and a total contents of solids and foaming agent of less than 6% by weight.

REFERENCES:
patent: 4042731 (1977-08-01), Chay
patent: 4216035 (1980-08-01), Bakos
patent: 4278479 (1981-07-01), Anderson
patent: 4428780 (1984-01-01), Shedroff

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