Coating compositions of an alkyd-acrylic graft copolymer

摘要

A coating composition containing as the film forming binder a graft copolymer having an acrylic backbone and alkyd resin chains; wherein the acrylic backbone of the graft copolymer is of polymerized acrylic monomers and contains about 0.1-20% by weight of polymerized isocyanato alkyl acrylates or methacrylates and the alkyd resin side chains are attached to the acrylic backbone by an isocyanato group that reacts with a hydroxyl or carboxyl group of the alkyd resin. An alkyd resin and plasticizer are usually added to the coating composition. The coating composition can be diluted with water or solvents for application and is particularly useful as a finish for automobiles and trucks and other equipment and can be used to refinish and repair automobile and truck finishes.