A Greener Approach for Synthesis of Functionalized Polyolefins by Introducing Reactive Functionality into Ethylene Copolymers

Apisuk, Wannida; Tsutsumi, Keisuke; Kim, Hyun Joon; Kim, Dong Hyun; Nomura, Kotohiro

doi:10.4236/gsc.2014.43018

Cited by 5 publications

(1 citation statement)

References 44 publications

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“…Copolymerizations of norbornene (NBE) with 1-octene (OC) using Cp′TiCl 2 (NC t Bu 2 ) [Cp′ = t BuC 5 H 4 ( 1 ), Cp ( 2 )]–MAO catalysts were conducted in the presence of 1,7-octadiene (OD) (Scheme ). As demonstrated previously in polymerization of OC, or in ethylene copolymerization with OC or styrene in the presence of OD using aryloxo-modified half-titanocenes, Cp′TiCl 2 (O-2,6- i Pr 2 C 6 H 3 ) [Cp′ = C 5 Me 5 (Cp*), t BuC 5 H 4 , 1,2,4-Me 3 C 5 H 2 ], an introduction of reactive functionality (terminal olefin) into the polymer side chain by incorporation of OD would be expected by adopting this approach. − The results are summarized in Table .…”

Section: Resultsmentioning

confidence: 89%

Copolymerizations of Norbornene and Tetracyclododecene with α-Olefins by Half-Titanocene Catalysts: Efficient Synthesis of Highly Transparent, Thermal Resistance Polymers

Zhao

Nomura

2015

Macromolecules

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Highly efficient synthesis of cyclic olefin (CO) copolymers with high glass transition temperatures (T g ) as well as high catalytic activity have been attained not only by copolymerization of norbornene (NBE) with α-olefins (1hexene, 1-octene, 1-dodecene), but also by copolymerization of tetracyclododecene (TCD) with α-olefins using halftitanocene catalysts, Cp′TiCl 2 (NC t Bu 2 ) [Cp′ = t BuC 5 H 4 (1), Cp (2)] in the presence of MAO. Linear relationships between the T g values and the NBE or TCD contents were observed in all cases; T g values in poly(TCD-co-α-olefin)s were higher than those in poly(NBE-co-α-olefin)s with the same CO contents. NBE and TCD incorporations in these copolymerization under high NBE or TCD feed conditions (especially by 2) were not affected by α-olefin (number of methylene units in the side chain) employed. An introduction of terminal olefinic double bond into the polymer side chain could be attained, if the copolymerization of NBE with 1-octene by 1 was conducted in the presence of 1,7-octadiene.

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Section: Resultsmentioning

confidence: 89%

Copolymerizations of Norbornene and Tetracyclododecene with α-Olefins by Half-Titanocene Catalysts: Efficient Synthesis of Highly Transparent, Thermal Resistance Polymers

Zhao

Nomura

2015

Macromolecules

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Efficient introduction of aromatic vinyl group by incorporation of divinylbiphenyl, p -divinylbenzene in syndiospecific styrene polymerization using aryloxo-modified half-titanocene catalysts

Apisuk

Nomura

2016

J. Polym. Sci. Part A: Polym. Chem.

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An efficient introduction of aromatic vinyl group into syndiotactic polystyrene has been achieved by incorporation of 3,3 0 -divinylbiphenyl, p-divinylbenzene (DVB) in syndiospecific styrene polymerization using aryloxo-modified half-titanocenes, Cp 0 TiCl 2 (O-2,6-i Pr 2 C 6 H 3 ) (Cp 0 5 t BuC 5 H 4 , 1,2,4-Me 3 C 5 H 2 ), in the presence of MAO. The resultant polymers possessed high molecular weights with uniform molecular weight distributions, and the DVB contents could be varied by the initial feed molar ratios (6-23 mol %) without decrease in the M n values. The syndiotactic stereo-regularity and presence of the vinyl groups were confirmed by NMR spectra.

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Transition metal complex catalysts promoting copolymers of cycloolefin with propylene/higher olefins

Wang

et al. 2023

Coordination Chemistry Reviews

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A Greener Approach for Synthesis of Functionalized Polyolefins by Introducing Reactive Functionality into Ethylene Copolymers

Abstract: Abstract

Cited by 5 publications

References 44 publications

Copolymerizations of Norbornene and Tetracyclododecene with α-Olefins by Half-Titanocene Catalysts: Efficient Synthesis of Highly Transparent, Thermal Resistance Polymers

Copolymerizations of Norbornene and Tetracyclododecene with α-Olefins by Half-Titanocene Catalysts: Efficient Synthesis of Highly Transparent, Thermal Resistance Polymers

Efficient introduction of aromatic vinyl group by incorporation of divinylbiphenyl, p -divinylbenzene in syndiospecific styrene polymerization using aryloxo-modified half-titanocene catalysts

Transition metal complex catalysts promoting copolymers of cycloolefin with propylene/higher olefins

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