Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in tubular or loop reactor
Patent
1998-05-28
2000-12-26
Wu, David W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in tubular or loop reactor
526 65, 526129, 526160, 526351, 526904, 526907, 526943, C08F 442
Patent
active
061661538
ABSTRACT:
The invention provides a process for commercial production of syndiotactic polyolefins using a metallocene catalyst supported on silica treated with MAO. The invention includes contacting the supported metallocene catalyst with an aluminum alkyl and aging the catalyst prior to polymerization. In addition, the catalyst is prepolymerized in a tubular reactor prior to being introduced into the polymerization reaction zone.
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Brintzinger et al., Stereospecific olefin polymerization with chiral metallocene catalysts, Ang. Chem. Int. Ed. Eng., vol. 34, pp. 1146-1147, 1995.
Bauch Christopher G.
McGovern Kevin P.
Rauscher David J.
Reddy B. Raghava
Shamshoum Edwar S.
Fina Technology, Inc.
Rabago Roberto
Wheelington Jim D.
Wu David W.
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