Group 4 Metallocenes: Supported and Unsupported

Autor: Olagoke Olabisi, Muhammad Atiqullah, Walter Kaminsky
Rok vydání: 1997
Předmět:
Zdroj: Scopus-Elsevier
ISSN: 1520-5746
1532-1797
DOI: 10.1080/15321799708018374
Popis: The global thermoplastics industry is made up of 74% commodity resins, one-third of which is accounted for by polyethylene alone [1]. It was only in 1933 that polyethylene was discovered by Fawcett and Gibson [2] and it was not until 1953 that Karl Ziegler [3–5], Guilio Natta [6–8], and Paul Hogen [9] discovered the revolutionary first-generation Ziegler-Natta transition metal catalyst system. The second-generation MgCI, and/or donorsupported Ziegler-Natta transition metal catalyst system, which was at least 100 times more active, led to the development of the low-pressure polymerization process for polyolefins and synthetic elastomers [10]. This revolutionary catalyst system resulted in the development of simplified gas-phase low-pressure polymerization plant operation without the need for the removal of residual trace catalyst from the polymer.
Databáze: OpenAIRE