Metallocene-Catalyzed Copolymerization of Ethylene and Isobutylene to Substantially Alternating Copolymers

Shaffer, Timothy D.; Canich, Jo Ann M.; Squire, Kevin R.

doi:10.1021/ma980196b

Cited by 74 publications

(51 citation statements)

References 8 publications

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“…As already reported, the complex 6 bearing cyclododecylamido and 2,7-di-tert-butylfluorenyl ligands exhibited relatively high activity and the highest IB-incorporation (48 mol%) to give E-IB alternating copolymer [5]. [3,11]. f) Reported in the previous paper [5].…”

Section: Copolymerization Of Ethylene With Isobutylenesupporting

confidence: 59%

“…The use of borate cocatalyst (run 17) resulted in higher activity and somewhat lower IBincorporation in comparison with dMMAO (run 9). [3,11]. e) Reported in the previous paper [5].…”

Section: Copolymerization Of Ethylene With Isobutylenementioning

confidence: 94%

“…Among them, Shaffer and coworkers have reported that an ansa-(cyclopentadienyl)(cyclododecylamido) complex of titanium, Me2Si(C5Me4)(N-c-C12H23)TiMe2 (1), was highly effective for the copolymerization of ethylene (E) with isobutylene (IB) to give alternating copolymers (IB-content ~45%) [3]. On the other hand, we have reported that the fluorenyl analogues of CGCs, Me2Si(η 3 -R)(N t Bu)TiMe2 (R = fluorenyl (2), 2,7-t Bu 2 fluorenyl (3), 3,6-t Bu 2 fluorenyl (4)) (Scheme 1), were highly effective for homo-and co-polymerization of higher α-olefins and cyclic olefins [4].…”

Section: Introductionmentioning

confidence: 99%

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Copolymerization of Ethylene with Isobutylene and Limonene Catalyzed by Titanium Complexes with Various ansa-(Fluorenyl)(alkylamido) Ligand

Nakayama

Sogo

Tanaka

et al. 2013

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Abstract.A series of titanium complexes bearing ansa-(fluorenyl)(amido) ligands with cyclohexylamido, isopropylamido, and isobutylamido groups were synthesized and their catalytic behaviors for the copolymerization of ethylene with isobutylene were compared with those with cyclododecylamido and tert-butylamido groups. The effects of cocatalyst on the ethylene-isobutylene copolymerization by a titanium complex having ansa-(fluorenyl)(cyclododecylamido) ligand were examined. The catalytic activity of the titanium complex for ethylene-limonene copolymerization was also further investigated.

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Section: Copolymerization Of Ethylene With Isobutylenesupporting

confidence: 59%

“…The use of borate cocatalyst (run 17) resulted in higher activity and somewhat lower IBincorporation in comparison with dMMAO (run 9). [3,11]. e) Reported in the previous paper [5].…”

Section: Copolymerization Of Ethylene With Isobutylenementioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Copolymerization of Ethylene with Isobutylene and Limonene Catalyzed by Titanium Complexes with Various ansa-(Fluorenyl)(alkylamido) Ligand

Nakayama

Sogo

Tanaka

et al. 2013

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“…The spectrum of PCL-g-MAH showed a sixth peak at =1.8-2.0 ppm and a seventh at =2.2-2.4 ppm. These two extra peaks are supposedly due to the grafting of MAH onto the main or branch chain of the PCL skeleton [22,25,26]. In addition, the FTIR spectra of PCL/starch (20 wt.%) and PCL-g-MAH/starch (20 wt.%) [in Fig.…”

Section: Characterization Of Pcl-g-mah/starchmentioning

confidence: 99%

Physical properties and biodegradability of maleated-polycaprolactone/starch composite

2003

Polymer Degradation and Stability

216

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“…4 ] catalyst system, possessed low molecular weight with broad molecular weight distributions (M n = 10780, M w /M n = 5.9, 2M1P content 9.0 mol%) [121], although the ethylene/IB copolymerization (MAO cocatalyst) afforded a copolymer with 45 mol% IB content under certain conditions (ethylene 0.34 bar, M n = 13200, M w / M n = 2.5) [121].…”

Section: Copolymerizations Of Ethylene With 2-methyl-1-pentenementioning

confidence: 99%

Olefin Polymerization with Half-Metallocene Catalysts

Nomura

Liu

2014

Organometallic Reactions and Polymerization

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In this chapter, recent development of half-sandwich titanium complexes containing anionic donor ligands as the catalyst precursors for olefin polymerization has been described. These catalysts display unique characteristics especially for synthesis of new ethylene copolymers by incorporation of new monomers that are very difficult or impossible to be incorporated in ethylene copolymerization by conventional Ziegler-Natta and ordinary metallocene catalysts. Both cyclopentadienyl fragment and anionic donor ligand play an essential key role for both the catalytic activity and the comonomer incorporation in the copolymerization.

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Metallocene-Catalyzed Copolymerization of Ethylene and Isobutylene to Substantially Alternating Copolymers

Cited by 74 publications

References 8 publications

Copolymerization of Ethylene with Isobutylene and Limonene Catalyzed by Titanium Complexes with Various ansa-(Fluorenyl)(alkylamido) Ligand

Copolymerization of Ethylene with Isobutylene and Limonene Catalyzed by Titanium Complexes with Various ansa-(Fluorenyl)(alkylamido) Ligand

Physical properties and biodegradability of maleated-polycaprolactone/starch composite

Olefin Polymerization with Half-Metallocene Catalysts

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