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Updated: Jun 1, 2026

Ethylene Polymerizations Using Parallel Pressure Reactors and a Kinetic Analysis of Chain Transfer Polymerization
Published on: November 27, 2015
Copolymerization of ethylene with sterically hindered 3,3-dimethyl-1-butene using a chain-walking pd-diimine catalyst
1School of Engineering, Laurentian University, Sudbury, Ontario P3E 2C6, Canada.
Abstract:
In this Communication, the copolymerization of ethylene with a sterically hindered α-olefin comonomer, γ-trisubstituted 3,3-dimethyl-1-butene (DMB), using a chain-walking Pd-diimine catalyst, [(ArNC(Me)(Me)CNAr)Pd(CH(3) )(NCMe)]SbF(6) (Ar2,6-(iPr)(2) C(6) H(3) ) (1) is reported. In spite of its high steric bulkiness in the close proximity of the double bond, appreciable DMB incorporations (up to 3 mol-%) are successfully achieved in the copolymers. The chain microstructure of the copolymers is elucidated, and the effect of DMB incorporation on polymer topology and thermal properties are examined. This work thus demonstrates the high capability of the Pd-diimine catalyst in incorporating sterically encumbered α-olefins.
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