Synthesis of functionalized alternating olefin copolymer and modification to graft copolymer by hydrosilylation

Alternating Copolymers of Ethylene and Diolefins Containing Pendent Functional Groups

“…A publication by Soga33 reports the synthesis of a highly alternating copolymer (ED + DE diads = 98.2%) of ethylene and 1,9‐decadiene using catalyst 2 and MAO. The copolymers obtained showed no evidence of crosslinking or cyclization.…”

Alternating Copolymerization of Ethylene and Propylene: Evidence for Selective Chain Transfer to Ethylene

“…The properties of ethylene copolymers depend on the number and identities of comonomer units in the chain; incorporation of 1-butene, 1-hexene, and 1-octene comonomers is commonly used to control the density and crystallinity of polyethylene. ,, One of the advantages of metallocene and other single-site catalysts is their ability to generate random copolymers with uniform compositions. These new well-defined catalysts also present additional opportunities to develop catalyst systems for generating polymers of defined sequence distributions such as alternating ,− ,, or blocky 1,4,5 copolymers.…”

“…Recently, several classes of metallocene catalysts have emerged which are able to generate alternating copolymers of ethylene and α-olefins such as propylene, hexene, and octene. − , Two strategies have emerged for the synthesis of such copolymers: the first involves catalysts based on C s -symmetric fluorenyl-ligated metallocenes. Alternating ethylene−propylene copolymers can be obtained from ansa -bisfluorenylmetallocenes ,,, or Me 2 C(3,4-Me 2 Cp)(fluorenyl)ZrCl 2 .…”

“…1,2,25 One of the advantages of metallocene and other single-site catalysts is their ability to generate random copolymers with uniform compositions. These new well-defined catalysts also present additional opportunities to develop catalyst systems for generating polymers of defined sequence distributions such as alternating 1,[7][8][9][10][11][12]26,27 or blocky 1,4,5 copolymers.…”

Cyclopolymerizations: Synthetic Tools for the Precision Synthesis of Macromolecular Architectures

“…Me 2 Si-(Flu) 2 ZrCl 2 /MAO brings about alternating copolymerization of ethylene with 1,9-decadiene without cyclization or crosslinking to give polymer having pendant octenyl group, which can be used for polymer reaction such as hydrosilylation. 228 The copolymerization of diallylsilanes with ethylene catalyzed by zirconocenes allows the corresponding copolymers to have silacyclohexane units (Figure 44). 230 Bridged zirconocenes showed higher activity than nonbridged zirconocenes.…”