Characteristics of rare earth systems as polymerization initiators

Characteristics of rare earth systems as polymerization initiators

The first example of high molecular weight poly(methyl methacrylate) (PMMA) with unusually low polydispersity is reported. The polymer was realized through the unique initiating function of organo-lanthanide(III) or (II) complexes such as LnR'(C sub 5 R sub 5 ) sub 2 or Ln(C sub 5 Me sub 5 ) su...

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Veröffentlicht in:Progress in polymer science 1993, Vol.18 (6), p.1097-1139
Hauptverfasser: Yasuda, Hajime, Tamai, Hisashi
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymerization
Preparation, kinetics, thermodynamics, mechanism and catalysts
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Zusammenfassung:The first example of high molecular weight poly(methyl methacrylate) (PMMA) with unusually low polydispersity is reported. The polymer was realized through the unique initiating function of organo-lanthanide(III) or (II) complexes such as LnR'(C sub 5 R sub 5 ) sub 2 or Ln(C sub 5 Me sub 5 ) sub 2 . The initiator used in the polymerization was derived from [SmH(C sub 5 Me sub 5 ) sub 2 ] sub 2 and MMA. The complex has an enolate structure and exhibits high catalytic activity towards MMA.
ISSN:0079-6700
1873-1619
DOI:10.1016/0079-6700(93)90011-Z