Precleaner system and soldering flux

Details Precleaner system and soldering flux Precleaner system and soldering flux

1985-05-10

1986-02-04

O'Keefe, Veronica

Metal treatment

Compositions

Fluxing

148 25, B23K 3534

Patent

active

045683956

ABSTRACT:
An improved activator system for a precleaner is formulated by combining either a carboxyl substituted pyridine or a carboxylamine substituted pyridine with a polyprotic acid. The preferred precleaner activator system combines nicotinic acid and phosphoric acid. An improved activator system for a soldering flux is formulated by combining an alkylamine with either a hydroxyl containing organic acid or a small molecular weight keto acid. The preferred flux activator system combines tetrahydrofurfurylamine and hydroxyacetic acid. A method for preparing and soldering metal surface using the precleaner and flux is carried out at relatively low temperatures and relatively short times.

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