Wax-flux composition containing a diester of sulfomalic acid for

Details Wax-flux composition containing a diester of sulfomalic acid for Wax-flux composition containing a diester of sulfomalic acid for

1975-01-31

1976-08-17

Rosenberg, Peter D.

Metal treatment

Compositions

Fluxing

148 22, 228207, B23K 3534

Patent

active

039752160

ABSTRACT:
Wax-flux compositions for use in low-temperature soldering processes comprise (A) a major amount of a wax and (B) an effective amount to cause fluxing, at or below the soldering temperature of the piece to be soldered, of a wax-soluble diester of sulfomalic acid. A process for soldering electrical components to a printed circuit board comprises (A) applying a molten wax-flux composition as described above to the metal pattern side of the board, (B) allowing the wax-flux composition to solidify, (C) trimming the components leads, and (D) soldering the components to the printed circuit board.

REFERENCES:
patent: 2664370 (1953-12-01), Snell
patent: 2672479 (1954-03-01), Doerr
patent: 2700628 (1955-01-01), De Rosa
patent: 2898255 (1959-08-01), Thompson
patent: 3459606 (1969-08-01), Becker
patent: 3832242 (1974-08-01), Cuthbert

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