Coating composition containing polytrimethylene ether diol useful as a primer composition

   
   

A coating composition comprising a film forming binder of a. an acrylic polymer having pendant groups that are reactive with isocyanate moieties and having a glass transition temperature (Tg) of 10 to 80.degree.C.; b. a polytrimethylene ether diol having a Mn (number average molecular weight) of 500 to 5,000; and c. an organic polyisocyanate crosslinking agent; wherein the coating composition contains pigments and cures at ambient temperatures or elevated temperatures and forms a coating that is sandable and when used in combination with a top coat, for example, a colored base coat and clear coat or a pigmented mono-coat forms a chip resistant multi-layer coating useful for refinishing or repairing automotive and truck bodies and parts.

 
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