Oil-modified acidic polyester-ethoxyline resinous compositions

Claim 1

THE PRODUCT OF REACTION UNDER HEAT OF A MIXTURE OF INGREDIENTS CONSISTING ESSENTIALLY OF (1) AN OIL-MODIFIED ACIDIC POLYESTER SUBSTANTIALLY FREE OF ALCOHOLIC HYDROXYL GROUPS AND HAVING AN ACID NUMBER OF FROM 20 TO 200 AND CONTAINING FROM 1 TO 2 FREE CARBOXYL GROUPS PER MOLECULE, THE SAID POLYESTER HAVING BEEN OBTAINED BY EFFECTING REACTION BETWEEN A MIXTURE OF INGREDIENTS CONSISTING ESSENTIALLY OF (A) A TRIHYDRIC ALCOHOL ESTER OF A LONG CHAIN MONOCARBOXYLIC FATTY ACID CONTAINING AT LEAST TWO UNESTERIFIED ALCOHOL HYDROXY GROUPS AND (B) A DICARBOXYLIC ACID FREE OF POLYMERIZABLE UNSATURATION, THERE BEING PRESENT IN THE REACTION MIXTURE MORE THAN ONE MOL OF THE DICARBOXYLIC ACID PER MOL OF TRIHYDRIC ALCOHOL ESTER, ANY UNSATURATION IN THE ACIDIC POLYESTER BEING DUE SOLELY TO THE AFORESAID MONOCARBOXYLIC ACID USED TO MAKE THE TRIHYDRIC ALCOHOL ESTER, AND (2) A COMPLEX EPOXIDE RESIN CONTAINING EPOXY GROUPS AND COMPRISING A POLYETHER DERIVATIVE OBTAINED BY REACTING EPICHLOROHYDRIN WITH A POLYHYDRIC ORGANIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF POLYHYDRIC ALCOHOLS AND PHENOLS CONTAINING AT LEAST TWO PHENOLIC HYDROXY GROUPS THERE BEING PRESENT IN THE AFORESAID COMPLEX EPOXIDE RESIN FROM ONE TO TWO EPOXIDE EQUIVALENTS PER CARBOXYL EQUIVALENT IN THE ACIDIC OILMODIFIED POLYESTER, THE ACIDIC POLYESTER COMPRISING, BY WEIGHT, FROM 5 TO 70 PER CENT OF THE TOTAL WEIGHT OF THE LATTER AND THE EPOXIDE RESIN.