Michelin Recherche Et Technique S.a.

Centre National De La Recherche Scientifique

Total Petrochemicals Research Feluy

Compagnie Generale Des Etablissements Michelin

Total Petrochemicals France

Ecole Superieure De Chimie Physique Electronique De Lyon

Universite Claude Bernard – Lyon1

Arkema France

Total Research & Technology Feluy

Cnrs

Université Claude Bernard Lyon I

Compagnie Generale Des Etablissements

Ineos Sales (uk) Limited

Totalenergies Onetech

Societe Detechnologie Michelin

Christophe Boisson

Roger Spitz

Julien Thuilliez

Franck D'Agosto

Vincent Monteil

Abbas Razavi

Vincent Lafaquiere

Christophe Navarro

Martine Slawinski

Floran Prades

Sébastien Norsic

Leyla Pehlivan

Benoît MacQueron

Sabine Sirol

Fanny Barbotin

Emma Moreso

Jerome Gromada

François Jean-Baptiste-Dit-Dominique

David Ribour

Jean-Pierre Broyer

Gaelle Pannier

Guillaume Cortial

Robert Ngo

Melanie Muron

Jérôme Gromada

Benoît Macqueron

Damien Montarnal

Nicolas Baulu

Ana Maria Cenacchi Peirera

Gaëlle Pannier

Alexandra Leblanc

Olivier Rolland

Christopher John Whiteoak

Ian German

Franck D'agosto

Arthur Zarrouki

Julie PRÉVOST

A diblock polymer composed of a first block and a second block is provided. The first block is a statistical copolymer comprising units of a 1,3-diene and more than 50 mol % of ethylene units. The second block is a polyethylene with a melting point above 90° C. and a number-average molar mass greater than or equal to 2000 g/mol and less than or equal to 10 000 g/mol. Such a diblock polymer has improved rheology compared to a statistical copolymer of the same microstructure and of the same macrostructure as the first block of the diblock polymer.

Ethylene-rich diene block polymer having a random block and a polyethylene block

An ethylene/1,3-butadiene copolymer containing ethylene units, butadiene units and UD units of cyclic, 1,2-cyclohexanediyl structure, and bearing, at one of its chain ends, an alkoxysilyl or silanol function, functional group Fis provided. The UD units of cyclic structure are of the following formula: 

Functional ethylene and 1,3-butadiene copolymer

A copolymer of a 1,3-diene and of an olefin selected from the group consisting of &#x3b1;-monoolefins, ethylene and mixtures thereof is provided. The copolymer bears, at one of its chain ends, an alkoxysilyl or silanol function, functional group F, and the copolymer is different from a copolymer of a 1,3-diene and a vinylaromatic monomer.

Functional copolymer consisting of a 1,3-diene and an olefine

A copolymer comprising a copolymer chain A bearing a function B selected from the group consisting of the functions B1 and B2, the copolymer chain A being a copolymer chain comprising monomer units M1 and monomer units M2, M1 being a conjugated diene and M2 being a monomer selected from the group consisting of &#x3b1;-monoolefins, ethylene and mixtures thereof, B1 being selected from the group consisting of N(SiMe3)2; N(SiMe2CH2CH2SiMe2); para-C6H4(NMe2); para-C6H4(OMe); para-C6H4(N(SiMe3)2); ortho-CH2-C6H4NMe2; ortho-CH2-C6H4OMe; C6F5; C3F7; C6F13; CH(OCH2CH2O); B2 being a function that is derived from B1, is provided. Such a copolymer is synthesized by using a transfer agent bearing the function B1 and a carbon-metal bond, the metal being an alkaline-earth metal, zinc or aluminium.

Monofunctional or telechelic copolymer of 1,3-diene and ethylene or alpha-monoolefin

A compound and the use thereof to prepare a functional or telechelic polyolefin is provided. The compound has the following formula (II):Y((CH)&#x2014;B')&#x2003;&#x2003;(II), wherein

Transfer agent for the preparation of a functional or telechelic polyolefin

Telechelic polyolefin of formula(I) and its derivatives:CH&#x2550;CH&#x2014;(CH)-A-Z&#x2003;&#x2003;(I)wherein:

Telechelic polyolefin and preparation thereof

Activating supports may be suitably prepared by the following procedure (a) providing a porous mineral oxide support material, (b) treating the support with a phosphorus-containing compound, (c) treating the support from step (b) with an organometallic compound, (d) heating the functionalized support from step (c) under an inert gas and then under an atmosphere comprising oxygen, (e) fluorinating the support with a fluorinating agent, and (f) recovering an activating support. The activating supports are suitable used in combination with single site catalysts for the polymerization of olefins. The supports are most preferably used in combination with metallocene complexes. The preparative route for the activating supports provides for supported polymerization catalyst systems having excellent activities.

Activating supports

The present invention relates to a multi-component catalytic system that can be used for the cis-1,4 stereospecific polymerization of conjugated dienes. The system is based on: in which the R groups each denote hydrogen, an alkyl radical optionally comprising one or more heteroatoms (N, O, P, S, Si) or one or more halogen atoms, a halogen atom, a group based on one or more heteroatoms (N, O, P, S, Si); x and y are integers from 0 to 6; D is a group having a chemical function, one of the atoms of which has a non-bonding pair; L being an atom from column 1 of the Periodic Table.

Catalytic systems made of a complex of rare earths for stereospecific polymerisation of conjugated dienes

The present invention relates to copolymers with polar and non-polar olefin blocks with a variable polar monomer content of 0.1 mol % to 99.9 mol %. The invention also relates to a method for obtaining copolymers with olefin blocks and vinyl polar monomer blocks, said method using a single-component catalytic system made up of an organometallic complex containing a metal belonging to groups VIII to X. Said organometallic complex is advantageously active in the medium without adding cocatalyst.

Copolymers with polar and non-polar olefin blocks

The present invention relates to a process for preparing an activating support for metallocene complexes in the polymerization of olefins comprising the steps of: That activating support is used to activate a metallocene catalyst component for the polymerization of olefins.

Activating supports with controlled distribution of OH groups

Borohydride metallocene complex of lanthanide, preparation process, catalytic system incorporating borohydride metallocene complex, process for copolymerization of olefins employing catalytic system. The complex corresponds to one or other of formulae A and B: where, in A, two ligands Cp, Cp, each composed of a cyclopentadienyl group, are connected to the lanthanide Ln, such as Nd, and where, in B, a ligand molecule, composed of two cyclopentadienyl groups Cp, Cpconnected to one another via a bridge P of formula MRR, M is an element from group IVa, and Rand R, which are identical or different, represent an alkyl group comprising from 1 to 20 carbon atoms, is connected to the lanthanide Ln, L is alkali metal, N is molecule of a complexing solvent, x is integral or non-integral number&#x2267;0, p is integer&#x2267;than 1 and y is integer&#x2267;0.

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

The present invention discloses an active supported catalyst system comprising: It also discloses a method for preparing said active support and its use in the polymerisation of polar and non polar monomers.

Transition metal complexes supported on activating support

Borohydride metallocene complex of lanthanide, preparation process, catalytic system incorporating it, copolymerization of olefins employing catalytic system and ethylene/butadiene copolymer, the butadiene units comprise 1,2-cyclohexane or 1,2- and 1,4-cyclohexane links. The complex corresponds to of formulae A and/or B:  where, in A two ligands Cpand Cp, each of a fluorenyl group, are connected to the lanthanide Ln, where, in B, a ligand molecule, composed of two fluorenyl groups Cpand Cpare connected via bridge P of formula MRR, is an element from group IVa, Rand R, which are identical or different, represent an alkyl group comprising from 1 to 20 carbon atoms, connected to lanthanide Ln, L is alkali metal, N is molecule of a complexing solvent, x is integral or non-integral number &#x2267;0 and p is integer &#x2267;1.

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

The present invention provides a method for improving and controlling the activity of Ziegler-Natta catalyst systems.

Controlled distribution of active sites in ziegler-natta catalyst systems

A borohydride metallocene complex of a lanthanide, its process of preparation, a catalytic system incorporating it, a process for the copolymerization of olefins employing this catalytic system and an ethylene/butadiene copolymer obtained by this process, the butadiene units of which comprise 1,2-cyclohexane or 1,2- and 1,4-cyclohexane links. This complex corresponds to one or other of the following formulaeand: 

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Tramoyes, France

Christophe Boisson