✦ LIBER ✦
Stereoblock Isotactic-Hemiisotactic Poly(propylene)s and Ethylene/Propylene Copolymers Obtained with ansa-Cyclopenta[1,2-b;4,3-b′]dithiophene Catalysts
✍ Scribed by John A. Ewen; Robert L. Jones; Michael J. Elder; Isabella Camurati; Hans Pritzkow
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 139 KB
- Volume
- 205
- Category
- Article
- ISSN
- 1022-1352
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Summary: Stereoblock, isotactic‐hemiisotactic poly(propylene) is produced with C~1~‐symmetric Me~2~C(η^5^‐3‐(2‐adamantyl)‐C~5~H~3~)(η^5^‐C~9~H~4~S~2~)ZrCl~2~ (1). Ethylene/propylene copolymerization data with the C~s~‐symmetric Me~2~C(η^5^‐C~5~H~4~)(η^5^‐C~9~H~4~S~2~)ZrCl~2~ (2) metallocene reveals that it is highly propylene‐specific and that it produces more random ethylene/propylene copolymers than its fluorenyl analog.
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