Multiple catalyst and reactor system for olefin polymerization and polymers produced therefrom

340 240 Disclosed is a process for producing branched polymers including at least 50 mol % C-Colefins. The process may include: (1) feeding a first catalyst, an activator, and one or more C-Colefins into a first reaction zone at a temperature of greater than 70° C. and a residence time of 120 minute...

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Bibliographic Details
Main Authors Abhari, Ramin, Sims, Charles Lewis, Jiang, Peijun, Johnsrud, David Raymond, Canich, Jo Ann Marie
Format Patent
LanguageEnglish
Published 29.05.2007
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Summary:340 240 Disclosed is a process for producing branched polymers including at least 50 mol % C-Colefins. The process may include: (1) feeding a first catalyst, an activator, and one or more C-Colefins into a first reaction zone at a temperature of greater than 70° C. and a residence time of 120 minutes or less to produce a product; (2) feeding the product a second catalyst, and an activator into a second reaction zone at a temperature of greater than 70° C., and a residence time of 120 minutes or less. One of the catalysts should be chosen to produce a polymer having a weight average molecular weight of 100,000 or less and a crystallinity of 20% or less. The other catalyst should be chosen to producing a polymer having a weight average molecular weight of 100,000 or less and a crystallinity of 20% or more.