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Volumn 21, Issue 9, 2002, Pages 1882-1890

Ethylene polymerization behavior of tris(pyrazolyl)borate titanium(IV) complexes

Author keywords

[No Author keywords available]

Indexed keywords

COMPLEXATION; ETHYLENE; MOLECULAR WEIGHT; POLYMERIZATION;

EID: 0000273921     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om010530j     Document Type: Article
Times cited : (117)

References (95)
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    • note
    • Solid 9c can be isomerized to 9b by heating at 236 °C for l h (ref 16c). However, the isomerization of 9b to 9c has not been reported.
  • 53
    • 0038361822 scopus 로고    scopus 로고
    • note
    • Titan, version 1.0.1 (Wavefunction), PM3/tm method. The mesityl groups were fixed perpendicular to the pyrazolyl rings. This method was tested for 10a, and the calculated structural parameters agreed well with the X-ray crystallographic results (ref 19).
  • 58
    • 0000150342 scopus 로고    scopus 로고
    • The use of different lots of MAO resulted in substantially different activities (e.g., Table 3, entry 7 vs Table 4, entry 10), although structure/activity trends remained unchanged. Increased aging of MAO resulted in increased activity, and the use of the MAO stored at low temperature and then heated for 2 h at 80 °C resulted in higher activity than use of MAO simply stored at low temperature. Others have noted that the source and aging of MAO can impart different cocatalytic characteristics. See: Tritto, I; Méalares, C.; Sacchi, M. C.; Locatelli, P. Macromol. Chem. Phys. 1997, 198, 3963.
    • (1997) Macromol. Chem. Phys. , vol.198 , pp. 3963
    • Tritto, I.1    Méalares, C.2    Sacchi, M.C.3    Locatelli, P.4
  • 63
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    • Fink, G., Mülhaupt, R., Brintzinger, H. H., Eds.; Springer-Verlag: Berlin
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  • 79
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    • note
    • Polyethylenes produced by 10a/MAO and l0e/MAO also exhibited broad polydispersities. See ref 11a.
  • 80
    • 0038700135 scopus 로고    scopus 로고
    • note
    • n and (mol total Al-Me)initial/(chains produced) are as follows: Entry 10: 17,100; 43. Entry 13: 63,100; 18. Entry 14: 15,900; 360. Entry 15: 102,700; 56. Entry 16: 3,120; 420.
  • 86
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    • note
    • Because the upper limit of the molecular weight distribution falls outside the range of the calibration standards, these data are only approximate. The shape and intensity of this minor peak also varied between runs.
  • 87
    • 0038700129 scopus 로고    scopus 로고
    • note
    • 3)initial/(mol chains produced) are as follows: entry 10: 4; entry 13: 2; entry 14: 35; entry 15: 0; entry 16: 130.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.