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US 6,958,408 B2Granted
Ligands with at least a fluorosilcone substituent useful for preparing metal-locenes
AssigneeTotal Petrochemicals France
InventorsVirginie Cheron, Jean-Luc Couturier, Hendrik Hagen, Gerard Van Koten, Berth Jan Deelman
Life of this patent
Estimating the term…
Abstract
The invention concerns ligands with at least a fluorosilicone substituent of general formulae (I) and (II); a method for preparing them and their use for producing catalysts useful for olefin polymerisation
Claims17
A compound of formulae (I) or (II):
- [A][Si(R)3−nRFn]z (I)
- in which:
- A represents a cyclopentadienyl, indenyl or fluorenyl radical;
- R represents a hydrogen atom, a linear or branched alkyl radical having a number of carbon atoms ranging from 1 to 40, an alkoxy radical having a number of carbon atoms ranging from 1 to 10, an aryl radical having from 6 to 20 carbon atoms, an aryloxy radical having from 6 to 10 carbon atoms or an alkenyl radical having a number of carbon atoms ranging from 2 to 10;
- Rf represents a perfluoroalkyl radical CxF2x+1—(CH2)y— in which x represents an integer ranging from 1 to 20 an y=0, 1, 2 or 3;
- n=1, 2 or 3;
- z=1, 2 or 3;
- B represents a divalent group >MR1R2 or else
- in which M represents a carbon atom, a silicon atom, a germanium atom or a tin atom;
- R1, R2, R3 and R4, which are identical or different, represent a hydrogen atom, a linear or branched alkyl radical having a number of carbon atoms ranging from 1 to 20 or an aryl radical having from 6 to 14 carbon atoms;
- C represents a cyclopentadienyl, methylcyclopentadienyl, pentamethylcyclopentadienyl, butylcyclopentadienyl, indenyl, naphthyl or fluorenyl radical;
- w=1 or 2.
9 more elements
Dimethyl(1H,1H,2H,2H-perfluoro-1-octyl)silylcyclopentadiene.
Dimethyl(perfluorooctylsilyl)cyclopentadiene.
1,3-Bis[dimethyl(perfluorooctyl)]silylcyclopentadiene.
The compound of formula (CH3)2Si[C5H4Si(CH3)2C8F17]2.
The compound of formula (CH3)2Si[C5H3{Si(CH3)2C8F17}2]2.
A metallocene of formulae (III) or (IV):
- in which:
- B represents a divalent group >MR1R2 or else
- in which M represents a carbon atom, a silicon atom, a germanium atom or a tin atom;
- R1, R2, R3 and R4, which are identical or different, represent a hydrogen atom, a linear or branched alkyl radical having a number of carbon atoms ranging from 1 to 20 or an aryl radical having from 6 to 14 carbon atoms;
- (I′) represents a cyclopentadienyl radical having one hydrogen less;
- (C′) represents a cyclopentadienyl, methylcyclopentadienyl, pentamethylcyclopentadienyl, butylcyclopentadienyl, indenyl or naphthyl radical with one hydrogen less,
- D=(I′) or (C′);
- M1 represents a metal from Groups III, IVb, Vb or VIb and a metal from the group of the lanthanides or actinides;
- L, which is identical or different, represents a halogen atom, a linear or branched alkyl radical having a number of carbon atoms ranging from 1 to 20, an alkenyl radical having from 2 to 20 carbon atoms, an alkoxy radical having from 1 to 20 carbon atoms or an aryloxy or aryl radical having from 6 to 40 carbon atoms;
- t represents an integer ranging from 1 to 4 and is equal to 2 when, in the formulae (III) and (IV), M1=Ti, Zr or Hf;
- w=1 or 2.
8 more elements
Dependencies are inferred from the claim text.