Control of composition in ethylene copolymerizations using magnesium chloride supported Ziegler–Natta catalysts
Abstract
Incorporation of a sterically hindered phenol (2,6‐di‐tert‐butyl‐4‐methylphenol) during the preparation of MgCl 2‐supported titanium catalysts coupled with the use of an aluminum alkyl activator modified with the same phenol and an electron donor such as ethyl benzoate allows the systematic modification of the reactivity ratios of ethylene and 1‐olefin copolymerizations. The polymers obtained tend to be largely random with a tendency toward alternating at high comonomer incorporation. Very low density LLDPE copolymers have been prepared in stable slurry polymerizations. The same catalysts allow the preparation of copolymers with dienes.
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References 20 · Cited by 43
- Authors
- Mulhaupt, R., Ovenall, D. W., & Ittel, S. D.
- Affiliations
- DuPont (United States) (US)
- Corresponding author
- Ittel, Steven D.
- Venue
- Journal of Polymer Science Part A: Polymer Chemistry
- Publisher
- Wiley
- Published
- 1988-08-20
- Volume
- 26
- Issue
- 9
- Pages
- 2487-2500
- ISSN
- 0887-624X (ISSN-L)
- 1099-0518
- OpenAlex
- W2033673235
- Cited by
- 43
- References
- 20
- Citations by year
- 2024: 2 · 2021: 3 · 2019: 1 · 2018: 5 · 2017: 4 · 2012: 1
- FWCI
- 2.47
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Polymer Science Part A Polymer Chemistry (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Organic Chemistry › Organometallic Complex Synthesis and Catalysis
- Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Keywords
- ethylene copolymerization, Ziegler-Natta catalysts, magnesium chloride-supported catalysts, titanium catalysts, 2,6-di-tert-butyl-4-methylphenol, ethyl benzoate, reactivity ratios, copolymer composition control, low-density polyethylene, slurry polymerization, alternating copolymers
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