Living copolymerization of ethylene with norbornene by fluorinated enolato-imine titanium catalyst (Articolo in rivista)

Type
Label
  • Living copolymerization of ethylene with norbornene by fluorinated enolato-imine titanium catalyst (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/pola.26182 (literal)
Alternative label
  • Ravasio A.; Boggioni L.; Scalcione G.; Bertini F.; Piovani D.; Tritto I. (2012)
    Living copolymerization of ethylene with norbornene by fluorinated enolato-imine titanium catalyst
    in Journal of polymer science. Part A, Polymer chemistry
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ravasio A.; Boggioni L.; Scalcione G.; Bertini F.; Piovani D.; Tritto I. (literal)
Pagina inizio
  • 3867 (literal)
Pagina fine
  • 3874 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://onlinelibrary.wiley.com/doi/10.1002/pola.26182/pdf (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 50 (literal)
Rivista
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Consiglio Nazionale Ric ISMAC CNR, Ist Studio Macromol, I-20133 Milan, Italy (literal)
Titolo
  • Living copolymerization of ethylene with norbornene by fluorinated enolato-imine titanium catalyst (literal)
Abstract
  • Complex [Ti(?2-N,O-{2,6-F2C6H3N?C(Me)C(H) ?C(CF3) O})2Cl2] (1) was evaluated as catalyst for living copolymerization of ethylene (E) with norbornene (N) upon activation with dried methylaluminoxane (d-MAO) at temperatures between 25 and 90 degrees C. Copolymerization performed at different [N]/[E] feed ratios afforded stereoirregular alternating high molar mass P(E-co-N) with narrow molar mass distribution. The living nature of E-co-N copolymerization by 1/d-MAO was demonstrated by kinetics at 50 degrees C. This catalyst system was used for the synthesis of block copolymers such as polyethylene (PE)-block-P(E-co-N) with a crystalline PE block and an amorphous P(E-co-N) block as well as P(E-co-N)1-block-P(E-co-N)2, having different norbornene contents in the segments and thus having different Tg values. (literal)
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