Catalyst system for alpha-olefin oligomerization
It is disclosed a new catalyst system, having high catalytic activity in the oligomerization of alpha-olefins, comprising a bridged bis-amido Group 4 metal compound of formula (I):wherein M is Ti, Zr or Hf; Y is Si, Ge or Sn; X is a hydrogen, halogen or an hydrocarbon radical; R1, R2, R3, R4, R5 and...
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Main Authors | , , , |
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Format | Patent |
Language | English |
Published |
16.04.2002
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | It is disclosed a new catalyst system, having high catalytic activity in the oligomerization of alpha-olefins, comprising a bridged bis-amido Group 4 metal compound of formula (I):wherein M is Ti, Zr or Hf; Y is Si, Ge or Sn; X is a hydrogen, halogen or an hydrocarbon radical; R1, R2, R3, R4, R5 and R6 are hydrocarbon radicals, optionally containing Si, Ge, O, S, P, B or N atoms; Q is a neutral Lewis base; and m is 0-2; in association with a boron activating compound, and with one or more branched alkylaluminiums and/or alumoxanes of branched alkylaluminiums; said catalyst system allows oligomers to be obtained in high yields, with a high selectivity towards alpha-oligomers. |
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Bibliography: | Application Number: US19990292139 |