New polymer additives, 3. Telechelic additives for polyolefins

Abstract

AbstractA series of telechelic additives with molecular weights of 500–1500 for polyolefins was prepared by reaction of telechelic polyolefins with amino‐, carboxy‐and aldehyde end groups were obtained by hydrogenation of the corresponding telechelic polybutadienes which were prepared by radical polymerization of butadiene with appropriate functional initiators as well as by anionic polymerization of butadiene and termination with carbon dioxide, ethylene oxide and chloroacetaldehyde dimethyl acetal. Oligomeric polyolefins with stabilizer end groups attached by non‐hydrolyzable CC‐bonds were obtained by end‐capping of living polybutadiene with appropriate functional additive components and subsequent hydrogenation. Preliminary tests of some of the telechelic additives demonstrated excellent compatibility with polypropylene and efficiencies similar to low‐molecular standard additives.