The present invention is directed to a rheology control agent for coating compositions. The rheology control agent includes a compound having the Formula (I) including isomers or mixtures of isomers thereof: ##STR00001## wherein p is 0, 1, 2, or 3; and R.sup.2, R.sup.3, R.sup.4, X and Y groups are described in the specification. The solvent-borne coating compositions containing the rheology control agent have improved rheology control on application and are useful for OEM, refinishing or repainting the exterior of automobile and truck bodies and parts thereof.