Unsaturated acidic polyester ethoxyline resinous compositions

Claim 1

THE PRODUCT OF HEAT INTERACTION OF A MIXTURE OF INGREDIENTS CONSISTING ESSENTIALLY OF (1) AN ACIDIC POLYMERIZABLE POLYESTER HAVING AN ACID NUMBER BETWEEN 75 AND 200 AND CONTAINING A FREE CARBOXYL GROUP, AND COMPRISING THE PRODUCT OF REACTION OF A MIXTURE OF INGREDIENTS CONSISTING ESSENTIALLY OF (A) A DIHYDRIC ALCOHOL SELECTED FROM THE CLASS CONSISTING OF ETHYLENE GLYCOL, DIETHYLENE GLYCOL, PROPYLENE GLYCOL AND DIPROPYLENE GLYCOL AS THE SOLE POLYHYDRIC ALCOHOL AND (B) AN ETHYLENICALLY ALPHA UNSATURATED ALPHA, BETA DICARBOXYLIC ACID SELECTED FROM THE CLASS CONSISTING OF MALEIC AND FUMARIC ACIDS AS THE SOLE POLYCARBOXYLIC ACID, THE LATTER ACIDS BEING THE SOLE SOURCE OF UNSATURATION IN THE AFORESAID ACIDIC POLYESTER AND THERE BEING PRESENT FROM 1 TO 2 MOLS OF THE DICARBOXYLIC ACID PER MOL OF DIHYDRIC ALCOHOL, AND (2) A COMPLEX EPOXIDE RESIN CONTAINING EPOXY GROUPS AND COMPRISING A POLYETHER DERIVATIVE OBTAINED BY REACTING EPICHLOROHYDRIN WITH A POLYHYDRIC PHENOL CONTAINING AT LEAST TWO PHENOLIC HYDROXY GROUPS, THERE BEING PRESENT IN THE REACTION MIXTURE FROM 0.8 TO 1.2 POLYESTER ACID EQUIVALENTS FOR EACH EQUIVALENT OF EPOXIDE.