PVC Processing Aid - CM-85 CM-85 is a design alternative based on CPE135A performance defects. It is a high-performance material developed by nano-polymerization compound technology. CM-85 is an interpenetrating network copolymer(IPN) with the structure of CPE grafted polyacrylate, its main function is to enhance the impact strength of PVC finished products under low temperature and to promote the fusion property of PVC blend.