Copolymerization of styrene and methyl methacrylate with nickel acetylacetonate/methylaluminoxane catalyst system

Coutinho, Fernanda M. B.; Monteiro, Luciene F.; Costa, Marcos Heil; Maria, Luiz C. Santa; Menezes, Sônia Maria Cabral de

doi:10.1007/s002890050272

Cited by 4 publications

(1 citation statement)

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“…Collins et al achieved the controlled polymerization of MMA with a two-component system consisting of a cationic zirconocenium complex Cp 2 ZrMe(THF) + BPh 4 À and a neutral zirconocene Cp 2 ZrMe 2 with a lower amount of syndiotactic dyads ([rr] = 80%) [4]. Since then, important research has been conducted with late transition metal-mediated polymerization, especially nickel-based catalysts: Ni(acac) 2 -MAO was first found to be an effective catalyst for the atactic polymerization of MMA [5,6]. Syndiotactic PMMA ([rr] = 72%) produced via late transition metal catalysts was first described with Cp 2 Ni-MAO [7].…”

Section: Introductionmentioning

confidence: 99%

N-tripodal ligands to generate copper catalysts for the syndiotactic polymerization of methyl-methacrylate: Crystal structures of copper complexes

Lansalot-Matras

Bonnette

Mignard

et al. 2008

Journal of Organometallic Chemistry

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Section: Introductionmentioning

confidence: 99%

N-tripodal ligands to generate copper catalysts for the syndiotactic polymerization of methyl-methacrylate: Crystal structures of copper complexes

Lansalot-Matras

Bonnette

Mignard

et al. 2008

Journal of Organometallic Chemistry

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Homopolymerization and copolymerization of tert‐butyl methacrylate and norbornene with nickel‐based methylaluminoxane catalysts

Huang

Wang

Kuo

et al. 2004

J of Applied Polymer Sci

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ABSTRACT:The homopolymerization and copolymerization of tert-butyl methacrylate (tBMA) and norbornene (NB) with nickel(II) acetylacetonate in combination with methylaluminoxane were systematically investigated. This catalytic system showed high activity toward the homopolymerization of both NB and tBMA. For these copolymerizations, activity was gradually lost with an addition of tBMA to NB or of NB to tBMA. This result was qualitatively explained with the trigger coordination mechanism. Furthermore, the determination of the reactivity ratios indicated a significantly higher reactivity for NB than for tBMA (r NB ϭ 4.14 and r tBMA ϭ 0.097), and this was interpreted by the coordination mechanism. The synthesized acrylate/NB copolymers exhibited glass-transition temperatures of 100 -250°C. The absence of crystallinity and the homogeneous repartition of the monomer units along the main chain yielded products with high transparency and high stability

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Homo- and copolymerisation of norbornene and styrene with nickel bis(acetyl acetonate)/methylaluminoxane system

Zhao¹,

Ribeiro²,

Portela³

et al. 2001

European Polymer Journal

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Copolymerization of styrene and methyl methacrylate with nickel acetylacetonate/methylaluminoxane catalyst system

Cited by 4 publications

References 0 publications

N-tripodal ligands to generate copper catalysts for the syndiotactic polymerization of methyl-methacrylate: Crystal structures of copper complexes

N-tripodal ligands to generate copper catalysts for the syndiotactic polymerization of methyl-methacrylate: Crystal structures of copper complexes

Homopolymerization and copolymerization of tert‐butyl methacrylate and norbornene with nickel‐based methylaluminoxane catalysts

Homo- and copolymerisation of norbornene and styrene with nickel bis(acetyl acetonate)/methylaluminoxane system

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