Solder cleaning and coating composition

Details Solder cleaning and coating composition Solder cleaning and coating composition

1975-12-08

1977-03-29

Pitlick, Harris A.

Metal treatment

Compositions

Heat treating

134 3, 134 41, 252136, 252142, 252149, C23F 712, C23F 708, C11D 708

Patent

active

040147150

ABSTRACT:
Relates to a composition and method for cleaning and coating metal surfaces comprising a mineral acid, a phosphoric acid concentrate having a P.sub.2 0.sub. 5 content of about 72-80% formed by heating 54% phosphoric acid with a mono- or polysaccharide, a dibasic acid such as succinic acid, thiourea and a wetting agent.

REFERENCES:
patent: 2318559 (1943-05-01), Percival
patent: 3181984 (1965-05-01), Tillis
patent: 3249547 (1966-05-01), Fisher
patent: 3296149 (1967-01-01), Cook et al.
patent: 3689292 (1972-09-01), Preston

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