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    PROCEDE DE PREPARATION D'UN INITIATEUR DILITHIE
    11.
    发明授权
    PROCEDE DE PREPARATION D'UN INITIATEUR DILITHIE 有权
    用于生产二锂引发

    公开(公告)号：EP1237941B1

    公开(公告)日：2006-06-14

    申请号：EP01984600.5

    申请日：2001-08-27

    申请人： Société de Technologie Michelin ,  MICHELIN RECHERCHE ET TECHNIQUE S.A.

    发明人： ROBERT, Pierre ,  FRADIN-COHAS, Corinne

    IPC分类号： C08F4/48 ,  C08F36/06 ,  C08F297/02

    CPC分类号： C08F297/02 ,  C08F4/488 ,  C08F36/06

    摘要： The invention concerns a method for preparing a dilithium initiator for use in anionic polymerisation, a method for preparing by anionic polymerisation a living diene elastomer provided with a carbon-lithium group at each of its chain ends, and a method for preparing a three-block copolymer from said living diene elastomer. The inventive method for preparing a dilithium initiator consists in reacting in an aliphatic or alicylic hydrocarbon solvent a first reagent consisting of a dialkenyl benzene and a second reagent consisting of secondary butyl lithium, so that the ratio of the number of moles of the first reagent over the number of moles of the second reagent is substantially equal to 0.5, and said method is characterised in that it consists in causing said reagents to react in the presence of a diamine, so that the resulting initiator essentially consists of a double adduct resulting from the addition of a secondary butyl lithium on each of the double bonds borne by said dialkenyl benzene.

    PROCEDE DE PREPARATION D'UN ELASTOMERE DIENIQUE FONCTIONNALISE, TEL QU'UN POLYBUTADIENE
    14.
    发明公开
    PROCEDE DE PREPARATION D'UN ELASTOMERE DIENIQUE FONCTIONNALISE, TEL QU'UN POLYBUTADIENE 有权
    用于生产官能二烯弹性体聚丁二烯

    公开(公告)号：EP2376543A1

    公开(公告)日：2011-10-19

    申请号：EP09764536.0

    申请日：2009-12-07

    申请人： Société de Technologie MICHELIN ,  MICHELIN Recherche et Technique S.A.

    发明人： ROBERT, Pierre ,  THUILLIEZ, Julien

    IPC分类号： C08F36/04 ,  C08F36/06 ,  C08F4/54

    CPC分类号： C08C19/44 ,  C08F36/04 ,  C08F4/545

    摘要： The present invention relates to a process for preparing a functionalized diene elastomer, in particular a functionalized polybutadiene with a high level of cis-1,4 linkages that has both a high Mooney viscosity and a reduced polydispersity index. The process according to the invention comprises the reaction of a catalyst system with at least one conjugated diene monomer to be polymerized then the addition of a functionalizing agent to the polymer thus obtained, the catalyst system comprising: - optionally a preforming conjugated diene, - a salt of one or more rare earth metal(s), - an inert hydrocarbon-based solvent, - an alkylating agent and - a halogen donor with exclusion of alkylaluminium sesquihalides, said reaction being carried out at a polymerization temperature less than or equal to 30°C, preferably between 0°C and 25°C.

    PROCEDE DE PREPARATION D'UN INITIATEUR DILITHIE ET PROCEDE DE POLYMERISATION ANIONIQUE
    18.
    发明公开
    PROCEDE DE PREPARATION D'UN INITIATEUR DILITHIE ET PROCEDE DE POLYMERISATION ANIONIQUE 有权
    用于生产二锂引发

    公开(公告)号：EP1237941A1

    公开(公告)日：2002-09-11

    申请号：EP01984600.5

    申请日：2001-08-27

    申请人： Sociéte de Technologie Michelin ,  MICHELIN RECHERCHE ET TECHNIQUE S.A.

    发明人： ROBERT, Pierre ,  FRADIN-COHAS, Corinne

    IPC分类号： C08F4/48 ,  C08F36/06 ,  C08F297/02

    CPC分类号： C08F297/02 ,  C08F4/488 ,  C08F36/06

    摘要： The invention concerns a method for preparing a dilithium initiator for use in anionic polymerisation, a method for preparing by anionic polymerisation a living diene elastomer provided with a carbon-lithium group at each of its chain ends, and a method for preparing a three-block copolymer from said living diene elastomer. The inventive method for preparing a dilithium initiator consists in reacting in an aliphatic or alicylic hydrocarbon solvent a first reagent consisting of a dialkenyl benzene and a second reagent consisting of secondary butyl lithium, so that the ratio of the number of moles of the first reagent over the number of moles of the second reagent is substantially equal to 0.5, and said method is characterised in that it consists in causing said reagents to react in the presence of a diamine, so that the resulting initiator essentially consists of a double adduct resulting from the addition of a secondary butyl lithium on each of the double bonds borne by said dialkenyl benzene.