VERFAHREN ZUR BESCHICHTUNG ELEKTRISCH LEITFAEHIGER SUBSTRATE, NACH DIESEM VERFAHREN BESCHICHTETE SUBSTRATE UND WAESSRIGE ELEKTROTAUCHLACKBAEDER
The invention concerns a cathodic electrophoretic enamelling process using electrophoretic enamelling baths containing a cationic amine-modified epoxide resin obtained by conversion of: (A) a diepoxide compound having an epoxy equivalent weight less than 2000 (B) a compound which reacts monofunction...
Saved in:
Main Authors | , , , , |
---|---|
Format | Patent |
Language | German |
Published |
27.07.1989
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The invention concerns a cathodic electrophoretic enamelling process using electrophoretic enamelling baths containing a cationic amine-modified epoxide resin obtained by conversion of: (A) a diepoxide compound having an epoxy equivalent weight less than 2000 (B) a compound which reacts monofunctionally with epoxide groups and contains an alcoholic OH group, a phenolic OH group or an SH group, (C) an amine. The molar ratio of components (A) and (B) is between 10:1 and 1:1, preferably between 4:1 and 1.5:1, and the positive charges are introduced by protonation and/or use of amine salts as components (C). The electrophoretic enamelling baths are characterized in that they contain at least 7.5 wt. % of a polyoxyalkylene polyamine, the percentage by weight being expressed with respect to the total binder content in the electrophoretic enamelling bath. |
---|---|
Bibliography: | Application Number: DE19883801786 |