Curable compositions

摘要

This invention relates to a curable composition comprising a solvent solution of a mixture comprising: (i) at least one hydroxy-functional acrylic polymer having a Tg of about 25° C. or lower; and (ii) at least one hydroxy-functional polyester having a Tg of 0° C. or lower; (iii) at least one polyisocyanate having an average functionality of >=4; (iv) a metal catalyst, such as a tin compound, for accelerating the isocyanate/hydroxyl reaction; and (v) optionally a pot-life extending amount of propionic acid.