Process for the preparation of (meth)acrylates of tetra- or polyhydric alcohols
    3.
    发明授权
    Process for the preparation of (meth)acrylates of tetra- or polyhydric alcohols 失效
    制备四元醇或多元醇的(甲基)丙烯酸酯的方法

    公开(公告)号:US07521578B2

    公开(公告)日:2009-04-21

    申请号:US11995406

    申请日:2006-08-16

    IPC分类号: C07C67/30

    CPC分类号: C07C67/03 C07C69/54

    摘要: Process for the preparation of acrylic and methacrylic acid esters by transesterification of (meth)acrylic acid esters of the formula I: where R1 is H or CH3 and R2 is an alkyl radical having 1 to 40 carbon atoms, with alkanols which have four or more esterifiable hydroxyl groups, characterized in that 0.01 to 10% by weight, based on the total reaction mixture, of lithium amide catalysts are used as transesterification catalyst.

    摘要翻译: 通过式(I)的(甲基)丙烯酸酯的酯交换反应制备丙烯酸和甲基丙烯酸酯的方法:其中R 1是H或CH 3,R 2是具有1至40个碳原子的烷基,其中烷基醇具有四个或更多个 酯化羟基,其特征在于使用基于总反应混合物的0.01至10重量%的氨基化锂催化剂作为酯交换催化剂。

    Process for the Preparation of (Meth)Acrylates of Tetra-Or Polyhydric Alcohols
    6.
    发明申请
    Process for the Preparation of (Meth)Acrylates of Tetra-Or Polyhydric Alcohols 失效
    四 - 或多元醇(甲基)丙烯酸酯的制备方法

    公开(公告)号:US20080194861A1

    公开(公告)日:2008-08-14

    申请号:US11995406

    申请日:2006-08-16

    IPC分类号: C07C69/54

    CPC分类号: C07C67/03 C07C69/54

    摘要: Process for the preparation of acrylic and methacrylic acid esters by transesterification of (meth)acrylic acid esters of the formula I: where R1 is H or CH3 and R2 is an alkyl radical having 1 to 40 carbon atoms, with alkanols which have four or more esterifiable hydroxyl groups, characterized in that 0.01 to 10% by weight, based on the total reaction mixture, of lithium amide catalysts are used as transesterification catalyst.

    摘要翻译: 通过式(I)的(甲基)丙烯酸酯的酯交换制备丙烯酸和甲基丙烯酸酯的方法:其中R 1是H或CH 3,R > 2是具有1至40个碳原子的烷基,其中链烷醇具有四个或更多个可酯化的羟基,其特征在于基于总反应混合物的氨基甲酸锂催化剂为0.01至10重量% 用作酯交换催化剂。