Method for producing water-dilutable epoxy ester resins containing copolymers of vinyl and/or vinylidene compounds

Abstract

Abstract The invention relates to a process for the production of improved water-dilutable epoxy resin esters which are prepared as follows: A. PARTIAL ESTERS WITH HYDROXYL GROUPS AND EPOXY GROUPS ARE FIRST FORMED BY PARTIAL ESTERIFICATION OF COMPOUNDS CONTAINING EPOXY OR HYDROXYL GROUPS WITH MIXTURES OF MONOCARBOXYLIC ACIDS CONSISTING MAINLY OF UNSATURATED ALIPHATIC STRAIGHT CHAIN MONOCARBOXYLIC ACIDS; B. THE RESULTING PARTIAL ESTERS ARE THEN REACTED WITH POLYBASIC CARBOXYLIC ACIDS IN SUCH A MANNER THAT THE EPOXY RESIN ESTERS WITH FREE CARBOXYL AND FREE HYDROXYL GROUPS ARE RENDERED WATERDILUTABLE BY NEUTRALIZATION WITH AQUEOUS AMMONIA OR STRONG ORGANIC NITROGEN BASES; C. EPOXY RESIN ESTERS ARE THEN REACTED WITH AQUEOUS AMMONIA AND/OR STRONG ORGANIC NITROGEN BASES IN THE PRESENCE OF WATER, UNTIL THEY ARE CONVERTED INTO SUFFICIENTLY WATER-DILUTABLE SYNTHETIC RESINS, THE IMPROVEMENT COMPRISING: 1. THE EPOXY RESIN ESTERS IN STEP (A) AND/OR 2. IN STEP (B), AND/OR 3. THE UNSATURATED ALIPHATIC MONOCARBOXYLIC ACIDS ADDED IN STEP (A), AND/OR 4. ADDUCTS OF -UNSATURATED DICARBOXYLIC ACIDS ON UNSATURATED MONOCARBOXYLIC ACIDS, PREFERABLY ADDED IN STEP (B), AND/OR 5. THE MONOCARBOXYLIC ACIDS THAT ARE USED FOR THE PRODUCTION OF THESE ADDUCTS, ARE COPOLYMERIZED WITH AT LEAST ONE POLYMERIZABLE VINYL AND/OR VINYLIDENE COMPOUND BY HEATING IN THE PRESENCE OF POLYMERIZATION CATALYSTS.

Inventors

• 👤 Rolf Guldenpfennig

Bibliographic Details