BINDEMITTEL FUER DIE KATHODISCHE ELEKTROTAUCHLACKIERUNG

摘要

The present invention relates to binders for cathodic electrodeposition which are water-dilutable as a result of protonation with acids and contain… A) 50 to 95% by weight of a polymer, polycondensate or polyadduct having an average molecular weight of 200 to 20,000, containing primary and/or secondary hydroxyl groups and primary, secondary and/or tertiary amino groups and having an amine number of 30 to 150 and… B) 5 to 50% by weight of a mixture of… (a) blocked polyisocyanates and/or urea condensates and… (b) one or more phenolic Mannich bases, obtainable from… b1) one or more polynuclear polyphenols,… b2) formaldehyde or a formaldehyde donor and… b3) one or more secondary aliphatic amines, and their use.