Epoxy-resin, polycarboxylic acid polyamine reaction products

Claim 1

A PROCESS FOR THE MANUFACTURE OF A RESIN SOLUTION SUITABLE AS RAW MATERIAL FOR MAKING LACQUERS BAKEABLE AT HIGH TEMPERATURES AND YIELDING VERY HEAT RESISTANT COATINGS, AND PREPARED FROM A RESINOUS DERIVATIVE OF A POLYHYDRIC PHENOL, WHICH DERIVATIVE CONTAINS AT LEAST TWO ETHYLENE OXIDE GROUPS AND WHICH IS OBTAINED BY REACTION OF A CHLORHYDRIN SELECTED FROM THE GROUP CONSISTING OF EPICHLORHYDRIN AND DICHLORHYDRIN ON THE POLYHYDRIC PHENOL IN AN ALKALINE MEDIUM, IN WHICH PROCESS A QUANTITY OF THE ETHYLENE OXIDE DERIVATIVE WHICH CONTAINS 1 MOL OF BOUND POLYHYDRIC PHENOL IS HEATED IN THE PRESENCE OF AN ORGANIC SOLVENT FREE FROM CARBOXYL GROUPS WITH FROM ABOUT 1/8 TO AT MOST 6/5 OF ONE EQUIVALENT OF A SUBSTANCE OF THE GROUP CONSISTING OF A POLYBASIC CARBOXYLIC ACID, OF WHICH THE CARBOXYL GROUPS ARE SEPARATED FROM ONE ANOTHER BY AT LEAST TWO CARBON ATOMS, AND AN ANHYDRIDE OF SUCH AN ACID, AND WITH 0.03 TO 0.3 MOL OF A POLYAMINE CONTAINING TWO -NH2 GROUPS SEPARATED FROM ONE ANOTHER BY AT LEAST TWO CARBON ATOMS AND WHEREIN THE HEATING IS CARRIED OUT ALSO IN THE PRESENCE OF AN ALKYL ETHER OF A FORMALDEHYDE CONDENSATION PRODUCT OF A SUBSTANCE OF THE GROUP CONSISTING OF MELAMINE UREA, DICYANDIAMIDE AND PHENOL.