Preparation of polyethylene with controlled bimodal molecular weight distribution using zirconium complexes

Junseong Lee; Youngjo Kim

Journal of Industrial and Engineering Chemistry, Vol.18, No.1, 429-432, January, 2012

DOI10.1016/j.jiec.2011.11.105 Export Citation

Preparation of polyethylene with controlled bimodal molecular weight distribution using zirconium complexes

Junseong Lee, and Youngjo Kim^{1, †}

Department of Chemistry, School of Basic Science, Chonnam National University, Gwangju 500-757, Republic of Korea
¹Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea

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Four zirconium complexes containing fully deprotonated 2-(2H-benzo[d][1,2,3]triazol-2-yl)-4,6-di-tertpentylphenol were used as catalysts for the polymerization of ethylene. In the presence of methylalumoxane (MAO) as a cocatalyst, the precursors were highly active for polyethylene with bimodal or multimodal molecular weight distribution.

Keywords:Zirconium;Phenoxybenzotriazole;Bidentate ligands;Polyethylene;Bimodal molecular weight distribution;Broad molecular weight distribution

[References]

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Tohi Y, Makio H, Matsui S, Onda M, Fujita T, Macromolecules, 36(3), 523 (2003)
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Owen CT, Bolton PD, Cowley AR, Mountford P, Organometallics., 26, 83 (2007)
Kim Y, Han Y, Lee MH, Yoon SW, Choi KH, Song BG, Do Y, Macromol. Rapid Commun., 22(8), 573 (2001)
Muller C, Lilge D, Kristen MO, Jutzi R, Angew. Chem. Int. Ed., 39, 789 (2000)
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Shriver DF, The Manipulation of Air-Sensitive Compounds, McGraw-Hill, New York (1969)
Armarego WLF, Chai CLL, Purification of Laboratory Chemicals, 6th ed., Elsevier, New York (2009)
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[1] Gibson VC, Spitzmesser SK, Chem. Rev., 103, 283 (2002)

[2] Kim HL, Rana D, Kwag H, Choe S, J. Ind. Eng. Chem., 6(2), 115 (2000)

[3] Lim JW, Choi Y, Yoon HS, Park YK, Yim JH, Jeon JK, J. Ind. Eng. Chem., 16(1), 51 (2010)

[4] Kim JW, Suh KD, J. Ind. Eng. Chem., 14(1), 1 (2008)

[5] Tohi Y, Makio H, Matsui S, Onda M, Fujita T, Macromolecules, 36(3), 523 (2003)

[6] D’Agnillo L, Soares JBP, Penlidis A, Macromol. Chem. Phys., 199, 955 (1998)

[7] Murtuza S, Casagrande OL, Jordan RF, Organometallics., 21, 1882 (2002)

[8] Owen CT, Bolton PD, Cowley AR, Mountford P, Organometallics., 26, 83 (2007)

[9] Kim Y, Han Y, Lee MH, Yoon SW, Choi KH, Song BG, Do Y, Macromol. Rapid Commun., 22(8), 573 (2001)

[10] Muller C, Lilge D, Kristen MO, Jutzi R, Angew. Chem. Int. Ed., 39, 789 (2000)

[11] Sun JQ, Nie YJ, Ren H, Xiao XH, Cheng ZZ, Schumann H, Eur. Polym. J., 44, 2980 (2008)

[12] Li X, Zhao XT, Zhu BC, Lin F, Sun JQ, Catal. Commun., 8, 2025 (2007)

[13] D’Agnillo L, Soares JBP, Penlidis A, Polym. Int., 47, 351 (1998)

[14] D'Agnillo L, Soares JBP, Penlidis A, J. Polym. Sci. A: Polym. Chem., 36(5), 831 (1998)

[15] Soares JBP, Kim JD, J. Polym. Sci. A: Polym. Chem., 38(9), 1408 (2000)

[16] Kim JD, Soares JBP, Rempel GL, Macromol. Rapid Commun., 19(4), 197 (1998)

[17] Blom R, Dahl IM, Macromol. Chem. Phys., 202, 719 (2001)

[18] Chu KJ, Soares JBP, Penlidis A, Macromol. Chem. Phys., 201, 552 (2000)

[19] Chung JS, Cho HS, Ko YG, Lee WY, J. Mol. Catal. A: Chem., 144, 61 (1999)

[20] Lee KM, Yoon S, Lee J, Kim J, Do Y, You TS, Kim Y, Polyhedron., 30, 809 (2011)

[21] Shriver DF, The Manipulation of Air-Sensitive Compounds, McGraw-Hill, New York (1969)

[22] Armarego WLF, Chai CLL, Purification of Laboratory Chemicals, 6th ed., Elsevier, New York (2009)

[23] Britovsek GJP, Gibson VC, Wass DF, Angew. Chem. Int. Ed., 38, 428 (1999)