PROCEDURE FOR COATING ELECTRICAL CONDUCTING SUBSTRATES, WATER-BASED LACQUER AND CROSSLINES WITH CONTENT IN NCO BLOCKED GROUPS.

摘要

THE INVENTION CONCERNS A METHODIC ELECTRO-IMMERSION ENAMELING PROCEDURE, WHICH IS CHARACTERIZED BECAUSE THE ELECTRO-IMMERSION PAINTING CONTAINS A RETICULATING AGENT THAT IS OBTAINED: (I) IN A FIRST STAGE (A) TRANSFORMING DIPHENYLMETHANIUM ANYZYZIDE MONOALCOHOLES IN AN INTERMEDIATE PRODUCT (A) CONTAINING ISOCYANATE GROUPS AND THIS INTERMEDIATE PRODUCT (A): (II) IN A SECOND STAGE IT IS TRANSFORMED WITH (C) A POLYOL OR A MIXTURE OF POLIOLS IN AN INTERMEDIATE PRODUCT (B) CONTAINING GROUPS HYDROXYL, WHICH (III) IN A THIRD STAGE OR IS TRANSFORMED WITH (D) A CYCLOALIFATIC POLYISOCIANATE, ALYPHATIC OR ARALIPHATHIC OR A MIXTURE OF SUCH POLYISOCIANATES AND (E) A MONOFUNCTIONAL AGENT WITH A GAS OR A ) A PARTIALLY BLOCKED POLYISOCIANATE PRODUCED FROM (D) AND (E) IN A FREE CROSSLINKING AGENT FROM ISOCYANATE GROUPS.