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Macromolecular Chemistry and Physics
Volumn 196, Issue 2, 1995, Pages 491-498
Propene polymerization in the presence of MgCl2‐supported Ziegler‐Natta catalysts, 5. Microstructural characterization of the “isotactic” (heptane‐insoluble) polypropene fractions
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EID: 84988150568     PISSN: 10221352     EISSN: 15213935     Source Type: Journal    
DOI: 10.1002/macp.1995.021960205     Document Type: Article
Times cited : (52)
References (24)
  • 8
    • 84988152755 scopus 로고    scopus 로고
    • The terms “isotactoid” and “syndiotactoid” are used hereby to indicate macromolecules or sequences of monomeric units with statistical distributions of configurations such that the content of m diads or of r diads, respectively, is significantly higher than 50% (typically, in the interval 70–90%), but not equal or nearly equal to 100% (in which cases the terms “isotactic” and “syndiotactic” can be applied).
  • 12
    • 84988172492 scopus 로고    scopus 로고
    • The resonances associated with the rmmr and rmrm pentads are either undetectable or too weak to be measured with accuracy.
  • 16
  • 20
    • 84988172487 scopus 로고    scopus 로고
    • 2‐supported catalysts with Lewis base molecules, the latter are commonly defined “internal donors” when used during the preparation of the solid catalyst and “external donor” when added to the Al‐alkyl co‐catalyst.

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