Poly(esterurethane) coating cured with an aminoplast on a solid substrate

Claim 1

A coated article comprising a solid substrate having thereon a cured coating comprising the reaction product of: A. an ungelled hydroxyl-containing urethane reaction product of an organic polyisocyanate and a polyhydric material, wherein a major portion of said polyhydric material is a saturated polyester polyol; said polyester polyol being selected from the class consisting of: 1. condensates of i. an alcohol component having an average functionality of at least about 1.9, and ii. a saturated acid component consisting essentially of 1 or more monomeric carboxylic acids or anhydrides having 2 to 14 carbon atoms per molecule, said component having an average functionality of at least about 1.9; and 2. a lactone-polyester formed from reacting lactones or mixtures of lactones in which the lactone has the following structural formula: ##EQU2## wherein n is at least 4, at least n + 2R's are hydrogen, and the remaining R's are substituents selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkoxy and single ring aromatic hydrocarbon radicals with a polyol or a hydroxy acid; said polyhydric material containing a total of not more than one gram-mole of compounds having a functionality of 3 or more per 500 grams of polyhydric material; said urethane reaction product having a hydroxyl value of at least 10; and b. an amine-aldehyde condensate.