High polymerization of methyl methacrylate with organonickel/MMAO systems

Ihara, Eiji; Fujimura, Takenori; Yasuda, Hajime; Maruo, Tatsuya; Kanehisa, Nobuko

doi:10.1002/1099-0518(200012)38:1+<4764::aid-pola150>3.0.co;2-b

Cited by 22 publications

(6 citation statements)

References 43 publications

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“…The use of other organometallics as initiators seems necessary, especially for the random copolymerization of polar monomers with nonpolar monomers, because rare‐earth‐metal complexes exhibit high oxophilicity, which shows high catalytic activity for polar monomers. As a result of the polymerization of MMA, we found new catalyses of organo‐nickel29 and organo‐palladium complexes30 coupled with methylalumoxane, whereas we failed to do so in the random copolymerization of polar monomers with nonpolar monomers. We are performing further studies with organo‐V, ‐Cr, ‐Fe, ‐Ru, ‐W, and ‐Mo 31…”

Section: Polymerizations With Other Organometallicsmentioning

confidence: 79%

Rare‐earth‐metal‐initiated polymerizations of (meth)acrylates and block copolymerizations of olefins with polar monomers

Yasuda¹

2001

J. Polym. Sci. A Polym. Chem.

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The organo-rareearth-metal-initiated living polymerization of methyl methacrylate (MMA) was first discovered in 1992 with (C 5 Me 5 ) 2 LnR (where R is H or Me and Ln is Sm, Yb, Y, or La) as an initiator. These polymerizations provided highly syndiotactic (Ͼ96%) poly(methyl methacrylate) (PMMA) with a high number-average molecular weight (M n Ͼ 1000 ϫ 10 3 ) and a very narrow molecular weight distribution [weight-average molecular weight/number-average molecular weight (M w /M n ) Ͻ 1.04] quantitatively in a short period. Bridged rare-earth-metallocene derivatives were used to perform the block copolymerization of ethylene or 1-hexene with MMA, methyl acrylate, cyclic carbonate, or ⑀-caprolactone in a voluntary ratio. Highly isotactic (97%), monodisperse, high molecular weight (M n Ͼ 500 ϫ 10 3

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Section: Polymerizations With Other Organometallicsmentioning

confidence: 79%

Rare‐earth‐metal‐initiated polymerizations of (meth)acrylates and block copolymerizations of olefins with polar monomers

Yasuda¹

2001

J. Polym. Sci. A Polym. Chem.

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“…However, this will cause a decrement in the molecular weight. According to the literature [57][58][59][60][61][62][63][64][65][66][67][68][69], temperature range from 30 • C to 80 • C might be conducive to the synthesis of high molecular weight PMMA in a coordination polymerization. The cocatalyst (AlR 3 ) is also a key factor for the polymerization of MMA.…”

Section: Coordination Polymerizationmentioning

confidence: 99%

Development of Synthesis and Application of High Molecular Weight Poly(Methyl Methacrylate)

2022

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Poly(methyl methacrylate) (PMMA) is widely used in aviation, architecture, medical treatment, optical instruments and other fields because of its good transparency, chemical stability and electrical insulation. However, the application of PMMA largely depends on its physical properties. Mechanical properties such as tensile strength, fracture surface energy, shear modulus and Young’s modulus are increased with the increase in molecular weight. Consequently, it is of great significance to synthesize high molecular weight PMMA. In this article, we review the application of conventional free radical polymerization, atom transfer radical polymerization (ATRP) and coordination polymerization for preparing high molecular weight PMMA. The mechanisms of these polymerizations are discussed. In addition, applications of PMMA are also summarized.

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“…Similar observation was also reported for the homoand copolymerization of norbornene and styrene with a binuclear Ni and Pd based diimine complexes [29]. It has also been reported that too high and low steric bulk leads to decrease the catalytic activity in MMA polymerization [30].…”

Section: Mma and Pmma Characterizationsmentioning

confidence: 89%

Polymerization of Methyl Methacrylate with Nickel(II) and Palladium(II) Iminopyridyl Mononuclear Bimetallic Complexes

et al. 2008

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Methyl methacrylate polymerizations with a series of Pd(II) or Ni(II) bimetallic catalysts having general formula [(2-C 5 (2,6-C 6 H 2 R 2 ) 2 CH(4-C 6 H 5 ); R = Me, iPr, MX 2 = PdCl 2 , NiBr 2 } in combination with methylaluminoxane showed that bimetallic Pd(II) catalysts are much more active than their bimetallic Ni(II) nickel and monometallic analogs to give syndiorich poly(methyl methacrylate) with moderate molecular weight.

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High polymerization of methyl methacrylate with organonickel/MMAO systems

Cited by 22 publications

References 43 publications

Rare‐earth‐metal‐initiated polymerizations of (meth)acrylates and block copolymerizations of olefins with polar monomers

Rare‐earth‐metal‐initiated polymerizations of (meth)acrylates and block copolymerizations of olefins with polar monomers

Development of Synthesis and Application of High Molecular Weight Poly(Methyl Methacrylate)

Polymerization of Methyl Methacrylate with Nickel(II) and Palladium(II) Iminopyridyl Mononuclear Bimetallic Complexes

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