Additive for fluxes and soldering pastes

Details Additive for fluxes and soldering pastes Additive for fluxes and soldering pastes

1990-07-31

1992-07-07

Rosenberg, Peter D.

Metal treatment

Compositions

Fluxing

148 24, B23K 3534

Patent

active

051279681

ABSTRACT:
An additive contains a deactivation agent functioning at soldering temperature. This novel additive is used for fluxes and soldering pastes. In the course of soldering, the deactivation agent in the additive deactivates an activator such as organic acids contained in the flux and the soldering paste in order for removal of an oxide film from a metallic base used for electric circuit. By use of the additive, corrosion of the metallic base with the activator is prevented even though the activator remains on the base. The additive enables one to omit an unnecessary washing step from a preparation of electric circuit.

REFERENCES:
patent: 4000016 (1976-12-01), Lazzarini
patent: 4428780 (1984-01-01), Shedroff
patent: 4478650 (1984-10-01), Zado
patent: 4619715 (1986-10-01), Hwang

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