Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method

A metallocene complex, lanthanide technology, applied to lanthanide borohydride metallocene complexes, catalytic systems comprising said complexes, polymerization using the same complexes and using said obtained ethylene- In the field of butadiene copolymers, it is possible to solve problems such as the description of copolymerization of olefins and conjugated dienes without the use of

Active Publication Date: 2008-11-19
MICHELIN & CO CIE GEN DES ESTAB MICHELIN +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0036] Copolymerization of olefins and conjugated dienes using lanthanide hydroboride metallocene complexes has not been described so far and remains an unattainable goal

Method used

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  • Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method
  • Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method
  • Borohydride metallocene complex of a lanthanide, catalytic system including said complex, polymerization method using same and ethylene/butadiene copolymer obtained using said method

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Embodiment Construction

[0084] All of the following examples were carried out under argon atmosphere with pre-drying of the used solvents by reaction with sodium followed by distillation or passing through 3 Angstrom molecular sieves while flushing with argon.

[0085] All the metallocene complexes synthesized below are at 22°C in d 8 - Passed at 300MHz using a "Bruker DRX 300" spectrometer in THF 1 The analysis was carried out by H NMR and, furthermore, for the hydroboration complexes according to the present invention, by the X-ray diffraction technique described in Additional Annex 1.

[0086] The microstructure of each copolymer obtained in these examples was obtained by 1 H NMR and 13 C NMR technique determination. For this, a "Bruker DRX 400" spectrometer was used at 400 MHz for 1 H NMR technique at 100.6MHz for 13 C NMR techniques. Spectra were collected at a temperature of 363K using a 5 mm "QNP" probe. A tetrachloroethylene / perdeuterated benzene mixture (2:1 by volume) was used as sol...

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Abstract

The invention provides a borohydride metallocene complex of a lanthanide, a preparation method thereof, a catalytic system including said borohydride metallocene complex, a method for the copolymerisation of olefins using said catalytic system and an ethylene / butadiene copolymer obtained using said method, having butadiene units with 1,2-cyclohexane or 1,2- and 1,4-cyclohexane chains. The inventive complex has one of the following formulas (A and B), the complex is characterized in that in formula A, two molecules of ligands Cp<1> and Cp<2> are linked to the lanthanide Ln, such as Nd, said ligand molecules each consisting of a fluorenyl group, and, in formula B, a ligand molecule is linked to the lanthanide Ln, said ligand molecule consisting of two fluorenyl groups Cp<1> and Cp<2> which are interlinked by means of a bridge P having formula MR<1>R<2>, in which M is an element from column IVA, such as Si, and R<1> and R<2>, which may be identical or different, represent an alkyl group having between 1 and 20 carbon atoms.

Description

technical field [0001] The present invention relates to a lanthanide hydroboride metallocene complex and a preparation method thereof, a catalytic system incorporating the complex, and a method for copolymerizing at least two vinyl monomers using the catalytic system and a copolymer of ethylene and butadiene obtained by the method, the copolymer having units derived from butadiene comprising 1,4-cyclohexane or 1,2-cyclohexane linkages. Background technique [0002] It is known to use catalytic systems based on lanthanide halogenated metallocene complexes for copolymerizing polyethylene and conjugated dienes. [0003] Document EP-A-1 092 731 describes the use of catalytic systems in the production of ethylene and conjugated diene copolymers including: [0004] In one aspect, an organometallic complex represented by one of the following general formulas A or B: [0005] [0006] where Ln represents a lanthanide metal having an atomic number which may range from 57 to 71, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F17/00C08F4/52C08F210/12
CPCC07F17/00C08F210/02C08F10/00Y10S526/943C08F4/52C08F236/06C08F210/18
Inventor J·蒂耶C·布瓦松R·施皮茨
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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