Novel Tailor-Made Ethylene-Phenolic Antioxidant Copolymerization using Ni (II) α-diimine Catalyst: I. Copolymerization State

Here in, the synthesis of hyper-branched polyethylene (HBPE) based sterically hindered phenolic antioxidant (SHPA) as a macromolecular stabilizer with highly suppressed leaching to the surroundings was reported. Ethylene copolymerization with SHPA monomer was conducted via coordination polymerization utilizing methylaluminoxane activated Ni(II) α-diimine catalyst. Chemical composition analysis of HBPE-SHPA copolymer manifests 0.6wt% SHPA incorporation with a conversion of about 80% and a hyper-branched architecture, containing 123 branches per 1000 carbon atoms, with AFM images resembling an ellipsoidal topology

Keywords:

tailor-made copolymers , late transition metal catalyst , Phenolic antioxidant