Baking polyester resin

Claim 1

A BAKING RESIN PREPARED BY THE REACTION OF (I) A POLYESTER PRODUCT OF THE CONDENSATION REACTION OF (A) AN ACIDIC MEMBER SELECTED FROM THE CLASS CONSISTING OF TRIMETLITIC ACID, TRIMELLIC ANHYDDRIDE TRIMESIC ACID, HEMIMETALLITIC ACID AND HEMMIMELLITIC ANHYDRIDE WITH (B) A MEMBER SELECTED FROM THE CLASS CONSISTING OF (I) ALKYLENE OXIDES CONTAINING 2-4 CARBON ATOMS AND (II) ALKYLENE GLYCOLS CONTAINING 2-6 CARBON ATOMS TO OBTAIN A PRODUCT CHARACTERIZED BY AN ACID NUMBER OF ABOUT 25-100 AND HYDROXYL NUMBER OF ABOUT 100-200 WITH (II) HEXAMETHOXYMETHYL MELAMINE AND (III) AN ALCOHOLS AN ERHER-ALKANOLS, SAID CLASS CONSISTING OF ALKANOLS AND ETHER-ALKANOLS, SAID ALKANOLS CONTAINING NOT MORE THAN ABOUT 22 CARBON ATOMS, SAID REACTANT I, II, AND III BEING CHARGED TO THE REACTION ZONE IN PROPORTIONS, AS PARTS BY WEIGHT OF EACH OF SAID REACTANTS, I, 40-90; II, 5-50; AND III, 10-60, SAID REACTANTS BEING MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 100* F. AND 350*F. UNTIL A BAKING RESIN PRODUCT IS OBTAINED WITHIN THE REACTION ZONE IN THE FROM OF A SINGLE PHASE LIQUID PRODUCT.