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    Process for preparing tertiary alkyl esters of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical
    4.
    发明授权
    Process for preparing tertiary alkyl esters of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical 有权
    在烷基中具有至少4个碳原子的（甲基）丙烯酸的叔烷基酯的制备方法

    公开(公告)号：US07745658B2

    公开(公告)日：2010-06-29

    申请号：US12168342

    申请日：2008-07-07

    申请人： Gunter Lipowsky ,  Joachim Wulff-Doering ,  Peter Zurowski ,  Juergen Strasser

    发明人： Gunter Lipowsky ,  Joachim Wulff-Doering ,  Peter Zurowski ,  Juergen Strasser

    IPC分类号： C07C69/52

    CPC分类号： C07C67/54 ,  C07C67/04 ,  C07C67/62 ,  C07C69/54

    摘要： The present invention relates to a process for preparing tertiary alkyl esters of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical. The process includes reacting (meth)acrylic acid with at least one olefin of formula (I) in homogeneous phase in the presence of an acidic catalyst in a reactor, discharging the resulting reaction mixture from the reactor, separating the discharged reaction mixture into a first mixture which contains the catalyst and a second mixture which contains the tertiary alkyl ester of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical, and removing the tertiary alkyl ester of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical from the second mixture in the presence of compound S, which comprises at least one N-oxyl group and is added as a stabilizer.

    摘要翻译： 本发明涉及在烷基中具有至少4个碳原子的（甲基）丙烯酸的叔烷基酯的制备方法。 该方法包括在反应器中在酸性催化剂存在下使（甲基）丙烯酸与至少一种式（I）烯烃均匀相反应，将所得反应混合物从反应器中排出，将排出的反应混合物分离成第一 包含催化剂的混合物和含有烷基中具有至少4个碳原子的（甲基）丙烯酸叔烷基酯的第二混合物，并且除去具有至少4个碳原子的（甲基）丙烯酸的叔烷基酯 在包含至少一个N-氧基并且作为稳定剂加入的化合物S的存在下，来自第二混合物的烷基。