An adhesion promoter is used as an additive or as a primer to promote adhesion of coatings, inks, or adhesives to the substrate of interest. An adhesion promoter usually has an affinity for the substrate and the applied coating, ink, or adhesive. Without the adhesion promoter, the properties of the applied coating may not be sufficient to meet the performance requirements needed for the end product such as a painted automotive plastic surface. In automotive coatings, the term adhesion promoter refers to the primer, which achieves adhesion of the subsequent paint layer to TPO substrate. This adhesion promoter is usually comprised of chlorinated polyolefin (CPO) as the active adhesion-promoting component, other resins, and pigment. sourcensave is an Online One Stop Shop for all Adhesives and Adhesion promoters and allows you to shop from a variety of Top Genuine Brands like Wacker, 3M, Araldite, Metlok etc. sourcensave aims to bring about a significant transformational change in the Indirect material supply chain by cutting down inefficiencies and bringing in predictability through a suite of value added services.