Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2005-07-26
2005-07-26
Lorengo, J. A. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
C502S110000, C502S114000
Reexamination Certificate
active
06921734
ABSTRACT:
The present invention relates to a titanocene complex and a catalyst comprising the same and an alkylaluminoxane for preparing syndiotactic polystyrene. The catalyst is applicable to the industrial production of the syndiotactic polymerization of styrene. The titanocene complex has a general formula of R1Ti(OR2R3)3, where R1is Cp or Cp containing 1-5 C1-4alkyls, R2is an aryl containing 6-12 carbon atoms, R3is a halogen, OR2R3is a halogenated aryloxy ligand.
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Lin Shang'an
Shen Zhigang
Xie Zaiku
Zhang Huiming
Zhou Wenle
China Petroleum & Chemical Corporation
Cohen & Pontani, Lieberman & Pavane
Lorengo J. A.
Pasterczyk J.
Shanghai Research Institute of Petrochemical Tech.
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