PROCESS FOR COATING ELECTRICALLY CONDUCTIVE SUBSTRATES, AQUEOUS ENAMEL, PROCESS FOR PRODUCING AN ADDUCT CONTAINING URETHANE GROUPS AND ADDUCT CONTAINING URETHANE GROUPS

• Main Authors: HEIMANN, ULRICH, OSLOWSKI, HANS-JOSEF, OTT, GUENTHER, REITER, UDO, SANTURE, DAVID, J
• Format: Patent
• Language: English; German
• Published: 21.02.1991
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention relates to a cathodic electrophoretic enamelling process characterized in that the electrophoretic enamel contains an adduct containing urethane groups. The adduct is obtained by reacting a polyester or polyether polyol, a polyisocyanate and a compound containing a hydroxyl group and at least one ketimine group in the molecule. L'invention concerne un procédé de trempage électrophorétique cathodique caractérisé en ce que la laque électrophorétique utilisée renferme un additif contenant des groupes uréthanes. Cet additif s'obtient par réaction d'un polyol de polyester ou de polyéther d'un polyisocyanate et d'un composé contenant un groupe hydroxyl et au moins un groupe cétimine dans la molécule.