Abstract
Weight watching: In ethylene polymerization, approximately 70 fold increases in molecular weight are achieved with C1-Zr2 compared to ethylene-bridged C2-Zr2 (see scheme). With MAO as the cocatalyst, approximately 600 fold increases in polyethylene (PE) molecular weight are achieved with C2-Zr2Cl4 and C1-Zr2Cl 4 compared to a mononuclear analogue. These results support the argument that Zr-Zr proximity significantly influences chain-transfer rates, and such effects are highly cocatalyst-sensitive.
| Original language | English |
|---|---|
| Pages (from-to) | 4937-4940 |
| Number of pages | 4 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 43 |
| Issue number | 37 |
| DOIs | |
| Publication status | Published - Sep 20 2004 |
Keywords
- Cooperative effects
- Copolymerization
- Homogeneous catalysis
- Zirconium
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)
Fingerprint Dive into the research topics of 'Polynuclear olefin polymerization catalysis: Proximity and cocatalyst effects lead to significantly increased polyethylene molecular weight and comonomer enchainment levels'. Together they form a unique fingerprint.
Cite this
Li, H., Li, L., & Marks, T. J. (2004). Polynuclear olefin polymerization catalysis: Proximity and cocatalyst effects lead to significantly increased polyethylene molecular weight and comonomer enchainment levels. Angewandte Chemie - International Edition, 43(37), 4937-4940. https://doi.org/10.1002/anie.200460288