PROCEDE DE PREPARATION D'UN ELASTOMERE DIENIQUE FONCTIONNALISE, TEL QU'UN POLYBUTADIENE
    1.
    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:EP2376544A1

    公开(公告)日:2011-10-19

    申请号:EP09799022.0

    申请日:2009-12-10

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

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

    摘要: The invention relates to a method for preparing a functionalised diene elastomer, in particular a functionalised polybutadiene with a high cis-1,4 chaining rate having both a high Mooney viscosity and a low polydispersity index. The method of the invention comprises reacting a catalytic system with at least one conjugated diene monomer to be polymerised, and adding a functionalising agent to the elastomer thus obtained, said catalytic system including at least: optionally, a preformation conjugated diene; a salt of one or more rare earth metals; an inert hydrocarbon solvent; and alkylation agent; and a halogen donor with the exception of alkylaluminium sesquihalides; and the incorporation of at least one Lewis base: (i) either, before said reaction, in the catalytic system during the synthesis thereof, (ii) or, during said reaction, in said polymerising medium including said catalytic system and said monomer(s) to be polymerised.

    COMPOSITION DE CAOUTCHOUC POUR BANDE DE ROULEMENT DE PNEU ET SON PROCEDE D'OBTENTION
    5.
    发明公开
    COMPOSITION DE CAOUTCHOUC POUR BANDE DE ROULEMENT DE PNEU ET SON PROCEDE D'OBTENTION 有权
    橡胶组合物的轮胎胎面方法

    公开(公告)号:EP1451246A1

    公开(公告)日:2004-09-01

    申请号:EP02803791.9

    申请日:2002-11-25

    摘要: The invention concerns a rubber composition useful for forming a tyre running tread, said composition being based on at least: a reinforcing inorganic filler; a diene elastomer having a molar percentage of units derived from conjugate dienes higher than 30 % which is prepared in emulsion and which includes carboxylic acid functions along its chain; a binding agent between said reinforcing inorganic filler and said elastomer consisting of a polysulphur alkoxysilane. Said composition is such that said elastomer is obtainable by carrying out: in an emulsifying solution, free radical copolymerisation of at least a conjugate diene monomer with a precursor comonomer which is hydrolysable or oxidizable in carboxylic acid, to obtain an intermediate diene elastomer comprising functions precursor of said acid along its chain; then hydrolysis or oxidation of said precursor functions to obtain said elastomer comprising carboxylic acid functions along its chain.