Effect of ligand in ethylene/styrene copolymerization by [Me2Si(C5Me4)(NR)]TiCl2 (R = tert-Bu, cyclohexyl) and (1,3-Me2 C5H3) TiCl2(O-2,6- iPr2C6H3)-MAO catalyst system

Kotohiro Nomura; Hiroshi Okumura; Takashi Komatsu; Naofumi Naga; Yukio Imanishi

doi:10.1016/S1381-1169(02)00223-6

Effect of ligand in ethylene/styrene copolymerization by [Me₂Si(C₅Me₄)(NR)]TiCl₂ (R = tert-Bu, cyclohexyl) and (1,3-Me₂ C₅H₃) TiCl₂(O-2,6- ⁱPr₂C₆H₃)-MAO catalyst system

Kotohiro Nomura, Hiroshi Okumura, Takashi Komatsu, Naofumi Naga, Yukio Imanishi

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

Copolymerization of ethylene with styrene using linked cyclopentadienyl-amide titanium(IV) complexes, [Me₂Si(C₅Me₄) (R)]TiCl₂ [R = tert-Bu (1), cyclohexyl (2)], and non-bridged (1,3-Me₂ C₅H₃) TiCl₂(O-2,6-ⁱPr₂C₆H₃) (3)-MAO catalysts have been explored. Although the catalytic activity by 2 was lower than 1, 2 showed more efficient styrene incorporation than 1 under the same conditions. Moreover, the resultant copolymer prepared by 2 possessed completely different microstructure from those by 1, indicating that the nature of amide ligand affects both styrene incorporation and monomer sequence.

Original language	English
Pages (from-to)	225-234
Number of pages	10
Journal	Journal of Molecular Catalysis A: Chemical
Volume	190
Issue number	1-2
DOIs	https://doi.org/10.1016/S1381-1169(02)00223-6
Publication status	Published - 2002 Dec 2
Externally published	Yes

Keywords

Constrained geometry catalyst
Ethylene/styrene copolymerization
Titanium

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology
Physical and Theoretical Chemistry

Access to Document

10.1016/S1381-1169(02)00223-6

Cite this

Effect of ligand in ethylene/styrene copolymerization by [Me₂Si(C₅Me₄)(NR)]TiCl₂ (R = tert-Bu, cyclohexyl) and (1,3-Me₂ C₅H₃) TiCl₂(O-2,6- ⁱPr₂C₆H₃)-MAO catalyst system. / Nomura, Kotohiro; Okumura, Hiroshi; Komatsu, Takashi et al.

In: Journal of Molecular Catalysis A: Chemical, Vol. 190, No. 1-2, 02.12.2002, p. 225-234.

Research output: Contribution to journal › Article › peer-review

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abstract = "Copolymerization of ethylene with styrene using linked cyclopentadienyl-amide titanium(IV) complexes, [Me2Si(C5Me4) (R)]TiCl2 [R = tert-Bu (1), cyclohexyl (2)], and non-bridged (1,3-Me2 C5H3) TiCl2(O-2,6-iPr2C6H3) (3)-MAO catalysts have been explored. Although the catalytic activity by 2 was lower than 1, 2 showed more efficient styrene incorporation than 1 under the same conditions. Moreover, the resultant copolymer prepared by 2 possessed completely different microstructure from those by 1, indicating that the nature of amide ligand affects both styrene incorporation and monomer sequence.",

keywords = "Constrained geometry catalyst, Ethylene/styrene copolymerization, Titanium",

author = "Kotohiro Nomura and Hiroshi Okumura and Takashi Komatsu and Naofumi Naga and Yukio Imanishi",

note = "Funding Information: The present project is partly supported by the Grant-in-Aid from the Ministry of Education, Science, Sports and Culture of Japan (no. 13555253). K.N. would like to express his heartfelt thanks to Tosoh Finechem Corporation for donating MAO (PMAO-S). K.N. also thanks to Dr. N. Tomotsu (Idemitsu Petrochemical Co. Ltd.) for helpful discussions.",

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AU - Okumura, Hiroshi

AU - Komatsu, Takashi

AU - Naga, Naofumi

AU - Imanishi, Yukio

N1 - Funding Information: The present project is partly supported by the Grant-in-Aid from the Ministry of Education, Science, Sports and Culture of Japan (no. 13555253). K.N. would like to express his heartfelt thanks to Tosoh Finechem Corporation for donating MAO (PMAO-S). K.N. also thanks to Dr. N. Tomotsu (Idemitsu Petrochemical Co. Ltd.) for helpful discussions.

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N2 - Copolymerization of ethylene with styrene using linked cyclopentadienyl-amide titanium(IV) complexes, [Me2Si(C5Me4) (R)]TiCl2 [R = tert-Bu (1), cyclohexyl (2)], and non-bridged (1,3-Me2 C5H3) TiCl2(O-2,6-iPr2C6H3) (3)-MAO catalysts have been explored. Although the catalytic activity by 2 was lower than 1, 2 showed more efficient styrene incorporation than 1 under the same conditions. Moreover, the resultant copolymer prepared by 2 possessed completely different microstructure from those by 1, indicating that the nature of amide ligand affects both styrene incorporation and monomer sequence.

AB - Copolymerization of ethylene with styrene using linked cyclopentadienyl-amide titanium(IV) complexes, [Me2Si(C5Me4) (R)]TiCl2 [R = tert-Bu (1), cyclohexyl (2)], and non-bridged (1,3-Me2 C5H3) TiCl2(O-2,6-iPr2C6H3) (3)-MAO catalysts have been explored. Although the catalytic activity by 2 was lower than 1, 2 showed more efficient styrene incorporation than 1 under the same conditions. Moreover, the resultant copolymer prepared by 2 possessed completely different microstructure from those by 1, indicating that the nature of amide ligand affects both styrene incorporation and monomer sequence.

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