The copolymers synthesized by AddiCo bear a dormant free radical at the end of the polymer chains; this enables them to graft into a variety of polyolefin backbones selected polyolefins backbones. This technology protected under a US patent and patent applications. AddiCo copolymers are grafted to polyolefins in a reactive extrusion process to generate additives, which are very compatible with polyolefins