Compositions: coating or plastic – Coating or plastic compositions – Natural resin or derivative containing
Patent
1991-06-20
1993-01-05
Brunsman, David
Compositions: coating or plastic
Coating or plastic compositions
Natural resin or derivative containing
148 23, 228211, C08L 9304
Patent
active
051767490
ABSTRACT:
A preflux composition suitable for use as a preflux for protecting the solderability of copper during a heating cycle comprising rosin, antioxidant, and a solvent system comprised of glycol ether and terpene and further including a dibasic acid, process for protecting the solderability of copper which is to be subjected to a heating cycle prior to soldering comprising using said preflux composition, and articles comprising printed circuits or wiring boards which have copper areas coated with said preflux composition.
REFERENCES:
patent: 2733155 (1956-01-01), Williams et al.
patent: 3352701 (1967-11-01), Goetz
patent: 3366499 (1968-01-01), Liebscher
Costello Bernard J.
Harkins Robert
Langan James
Argus International
Brunsman David
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