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    USE OF POLYMERIZATION INHIBITOR COMPOSITIONS
    1.
    发明申请
    USE OF POLYMERIZATION INHIBITOR COMPOSITIONS 审中-公开

    公开(公告)号：US20190023641A1

    公开(公告)日：2019-01-24

    申请号：US15757497

    申请日：2015-09-07

    申请人： RHODIA OPERATIONS

    发明人： Christelle CHRETIEN ,  Karel VITS ,  Lars FISCHER ,  Yan SHI

    IPC分类号： C07C67/62

    摘要： The present invention relates to the use of at least two phenol derivatives jointly with at least one ancillary polymerization inhibitor which is different from these two phenol derivatives and particularly is selected from phenol derivatives, amine derivatives, thiazine derivatives, nitroso compounds, N-oxyl derivatives, metal salts, quinone derivatives, and mixtures thereof, to inhibit the polymerization of ethylenically unsaturated monomers comprising at least one heteroatom, it being also possible for a dispersant to be incorporated. The present invention also relates to a corresponding polymerization-inhibiting composition and to the corresponding process for preparing ethylenically unsaturated monomers comprising at least one heteroatom, and particularly acrylic monomers.

    COMPOSITION PREVENTING THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERS AND THE REMOVAL THEREOF BEFORE POLYMERIZATION
    2.
    发明申请
    COMPOSITION PREVENTING THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERS AND THE REMOVAL THEREOF BEFORE POLYMERIZATION 有权
    组合物防止乙烯聚合单体的聚合反应及其在聚合前的去除

    公开(公告)号：US20160230089A1

    公开(公告)日：2016-08-11

    申请号：US15021994

    申请日：2014-09-11

    申请人： RHODIA OPERATIONS

    发明人： Christelle CHRETIEN ,  Lars FISCHER ,  Stephan VERDIER ,  Jacques CAVEZZAN

    IPC分类号： C09K15/08 ,  C08F136/08

    CPC分类号： C09K15/08 ,  C07C37/14 ,  C07C37/68 ,  C07C37/74 ,  C07C37/82 ,  C07C39/08 ,  C08F2/38 ,  C08F136/08 ,  C08F236/08 ,  C08F2/40

    摘要： The invention describes a composition that inhibits the polymerization of ethylenically unsaturated monomers, including at least 98% by weight of 4-tert-butylcatechol (4-TBC), 0.03% to 0.2% by weight of catechol (PC), and at least one impurity selected among 3-tert-butylcatechol, tert-butylhydroquinone, 3,5-di-tert-butylcatechol and mixture thereof, the total quantity of said impurities and of the PC being 0.1% to 0.8% by weight of said composition. The invention also describes a method for removing in said polymerization-inhibiting composition present in a mixture including at least one ethylenically unsaturated monomer.

    摘要翻译： 本发明描述了抑制烯属不饱和单体聚合的组合物，包括至少98重量％的4-叔丁基邻苯二酚（4-TBC），0.03重量％至0.2重量％的儿茶酚（PC）和至少一种 选自3-叔丁基邻苯二酚，叔丁基氢醌，3,5-二叔丁基邻苯二酚及其混合物中的杂质，所述杂质和PC的总量为所述组合物重量的0.1％至0.8％。 本发明还描述了一种在包含至少一种烯属不饱和单体的混合物中存在于所述聚合抑制组合物中的方法。