can this product be used on vinyl?

I believe it can. I had synthetic corner trim on the project I just finished and this paint did cover it. I did apply a second coat just on these corners to be sure I had even coverage.. I was able to do this within 20 min from the first application.

Thank you for your interest in Valspar. Valspar Interior/Exterior Latex Enamel can be applied to some vinyl surfaces. For additional information please contact our Consumer Relations Team directly at 1-877-825-7727 at your earliest convenience as they are standing by to assist you.