Abstract:
A WATER-SOLUBLE ALKYL RESIN COMPOSITION AND A 2-STEP PROCESS FOR THE PREPARATION THEREOF COMPRISING THE PRODUCT OF THE REACTION OF AN ALIPHATIC MONOCARBOXYLIC ACID WITH DI- OR TRIPENTAERYTHRITOL, WHICH PRODUCT IS THEN REACTED WITH PHTHALIC ANHYDRIDE TO AN ACID NUMBER OF 70-100, THEN NEUTRALIZED. THE COMPOSITION IS USEFUL IN THE FORMULATION OF PROTECTIVE COATINGS, ESPECIALLY THOSE INTENDED FOR APPLICATION BY THE ELECTRO-DEPOSITION PROCESS.