BATHS FOR ELECTROLYTIC DEPOSITION OF TIN-LEAD ALLOYS, CONTAINING A COMBINATION OF AROMATIC AMINE, AROMATIC ALDEHYDE, ALIPHATIC ALDEHYDE AND A NON-IONIC SURFACTANT

摘要

P AN IMPROVED ELECTROLYTIC COATING BATH FOR DEPOSITING GLOSSY TIN-LEAD ALLOYS ONTO SUBSTRATES, OR SOLUBLE TIN AND LEAD SALTS, WITH COMPATIBLE ACIDS, ARE USED IN CONNECTION WITH A PARTICULAR COMBINATION D 'ADDITIVES COMPRISING 1. AN AROMATIC AMINE, 2. AN AROMATIC ALDEHYDE, 3. AN ALIPHATIC ALDEHYDE AND 4. A NON-IONIC SURFACTANT, TO ENSURE THE HIGH-SPEED OPERATIONS, AS WELL AS THE BRIGHTNESS AND THE UNIFORMIZATION REQUIRED. / P