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19 条记录 (耗时 0.035 秒)

    DIORGANOMAGNESIUM COMPOUND
    12.
    发明申请
    DIORGANOMAGNESIUM COMPOUND 有权

    公开(公告)号：US20230047483A1

    公开(公告)日：2023-02-16

    申请号：US17785952

    申请日：2020-12-14

    申请人： COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

    发明人： Julien Thuilliez ,  Robert Ngo ,  François Jean-Baptiste-Dit-Dominique

    IPC分类号： C07F3/02 ,  C08F210/02

    摘要： The invention relates to a diorganomagnesium compound of formula RB—Mg—RA, RB being different from RA, RB comprising a benzene nucleus substituted with a magnesium atom, one of the carbon atoms of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl, an isopropyl or forming a ring with the carbon atom which is its closest neighbour and which is meta to the magnesium, the other carbon atom of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl or an isopropyl, RA being an alkyl, a cycloalkyl or a benzyl, which may be substituted or unsubstituted, which diorganomagnesium compound is other than n-butylmesitylmagnesium. When used as co-catalyst of a metallocene, it makes it possible to increase the functional group content in the synthesis of a functional polymer.

    Catalytic preform system comprising a rare earth metallocene
    15.
    发明授权
    Catalytic preform system comprising a rare earth metallocene 有权

    公开(公告)号：US10752712B2

    公开(公告)日：2020-08-25

    申请号：US15780233

    申请日：2016-11-30

    申请人： COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

    发明人： Vincent Lafaquiere ,  Julien Thuilliez

    IPC分类号： C08F210/02 ,  C08F236/06 ,  C08F4/52 ,  C08F4/64

    摘要： A catalytic system based at least on a preformation conjugated diene monomer, on an organometallic compound as cocatalyst and on a metallocene of formula {P(Cp1)(Cp2)Y} is provided. In the formula, Y denotes a group comprising a metal atom which is a rare earth metal, Cp1 and Cp2, which are identical or different, are selected from the group consisting of fluorenyl groups, cyclopentadienyl groups and indenyl groups, the groups being substituted or unsubstituted, and P is a group bridging the two Cp1 and Cp2 groups and comprising a silicon or carbon atom. Such a catalytic system exhibits an improved stability of the catalytic activity over time, in particular on storage.

    Continuous synthesis of an ethylene and butadiene copolymer
    16.
    发明授权
    Continuous synthesis of an ethylene and butadiene copolymer 有权

    公开(公告)号：US11136422B2

    公开(公告)日：2021-10-05

    申请号：US16605958

    申请日：2018-04-16

    申请人： COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

    发明人： Julien Thuilliez ,  Nuno Pacheco

    IPC分类号： C08F210/02

    摘要： A process for the synthesis of an ethylene/butadiene copolymer is provided. The process is continuous and comprises:
    a. feeding at least one stirred polymerization reactor with a mixture of ethylene, butadiene, hydrocarbon-based solvent and catalytic system allowing the formation of cyclic trans-1,2-cyclohexane units in the polymer chain with a mole ratio of ethylene to the sum of the ethylene and butadiene monomers ranging from 0.5 to 0.99; the concentration of ethylene and butadiene monomers in the polymerization reaction medium being at least 10% by weight relative to the total weight; the operating pressure of the reactor is greater than or equal to the saturated vapour pressure of the polymerization reaction medium;
    b. recovering the ethylene/butadiene copolymer, this copolymer comprising, statistically distributed, ethylene units, butadiene units and trans-1,2-cyclohexane units, the molar fraction of ethylene units in the copolymer being greater than or equal to 50%.

    ACTIVATION OF CATALYTIC SYSTEMS FOR THE STEREOSPECIFIC POLYMERIZATION OF DIENES
    19.
    发明申请
    ACTIVATION OF CATALYTIC SYSTEMS FOR THE STEREOSPECIFIC POLYMERIZATION OF DIENES 审中-公开
    催化剂系统的立体异构聚合反应

    公开(公告)号：US20140350202A1

    公开(公告)日：2014-11-27

    申请号：US14367173

    申请日：2012-12-20

    申请人： COMPAGNIE GENERALE DES ESTABLISSEMENTS MICHELIN ,  MICHELIN RECHERCHE ET TECHNIQUE S.A.

    发明人： Julien Thuilliez ,  Olivier Rolland

    IPC分类号： C08F136/06

    CPC分类号： C08F136/06 ,  C08F36/04 ,  C08F36/06 ,  C08K5/56 ,  C08F4/545

    摘要： An activated preformed catalytic system for the 1,4-cis stereospecific polymerization of conjugated dienes based on at least: one or more preformation conjugated diene monomers, one or more salts of one or more rare-earth metals of one or more acids chosen from an organic phosphoric acid and an organic carboxylic acid, and a mixture thereof, one or more alkylating agents consisting of one or more alkylaluminiums of formula AlR3 or HAlR2, in which R represents an alkyl radical and H represents a hydrogen atom, one or more halogen donors consisting of an alkylaluminium halide, and one or more compounds corresponding to formula (I) below:

    摘要翻译： 用于至少一种或多种预共轭二烯单体的共轭二烯的1,4-顺式立体有择聚合的活化预制催化体系，一种或多种一种或多种酸的稀土金属的盐，其选自 有机磷酸和有机羧酸及其混合物，一种或多种由一种或多种式AlR 3或HAlR2的烷基铝组成的烷基化剂，其中R表示烷基，H表示氢原子，一个或多个卤素供体 由卤化烷基卤化物和一种或多种对应于下式（I）的化合物组成：