利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

48 条记录 (耗时 0.028 秒)

    Production of a diallyl ester of an aromatic dicarboxylic acid
    8.
    发明公开
    Production of a diallyl ester of an aromatic dicarboxylic acid 失效
    Herstellung eines二手车einer aromatischenDicarbonsäure。

    公开(公告)号：EP0029362A1

    公开(公告)日：1981-05-27

    申请号：EP80304105.2

    申请日：1980-11-14

    申请人： KUREHA KAGAKU KOGYO KABUSHIKI KAISHA

    发明人： Seguchi, Koji

    IPC分类号： C07C69/83 ,  C07C69/767 ,  C07C67/03 ,  B01J31/26

    CPC分类号： C07C67/03 ,  B01J31/122 ,  B01J31/2208 ,  B01J31/26 ,  B01J31/28 ,  B01J31/38 ,  B01J2231/4288 ,  C07C69/76 ,  C07C69/82

    摘要： Known catalysts for producing a diallyl ester of an aromatic dicarboxylic acid, particularly a diallyl ester of an aromatic symmetrical dicarboxylic acid, by heating an ester of an aromatic dicarboxylic acid with an allyl alcohol to effect ester exchange, suffer from low catalytic activity and a tendency to cause formation of by-products and colouration of the product. These problems can be overcome by effecting reaction in the presence of, as catalysts, both (A) at least one organic tin compound of the formula (I)
    wherein R 1 and R 2 independently represent alkyl of 1 to 8 carbon atoms or phenyl, and X represents two halogen atoms or an oxygen atom, and (B) at least one substance which is an element or compound of an element belonging to group IIa, IIb, IIIa, IVa, IVb or VIII of the periodic table of elements, other than organic tin compounds represented by the general formula (I).

    摘要翻译： 通过将芳族二羧酸的酯与烯丙醇加热以进行酯交换，制备芳族二羧酸的二烯丙基酯，特别是芳族对称二羧酸的二烯丙基酯的已知催化剂具有低的催化活性和倾向 引起副产物的形成和产物的着色。 这些问题可以通过在作为催化剂的存在下进行反应来克服（A）至少一种式（I）... 的有机锡化合物，其中R 1和R 2独立地表示烷基 1至8个碳原子或苯基，X表示两个卤素原子或氧原子，和（B）至少一种物质，其是属于IIa，IIb，IIIa，IVa，IVb或IIb族元素的元素或化合物 元素周期表VIII的VIII，除了通式（I）表示的有机锡化合物以外。

    PROCESS AND CATALYST FOR MAKING DIALKYL CARBONATES
    10.
    发明公开
    PROCESS AND CATALYST FOR MAKING DIALKYL CARBONATES 有权
    方法和催化剂用于生产碳酸二烷基

    公开(公告)号：EP1112120A1

    公开(公告)日：2001-07-04

    申请号：EP99942070.6

    申请日：1999-08-10

    申请人： Catalytic Distillation Technologies

    发明人： RYU, J., Yong

    IPC分类号： B01J31/22 ,  C07C68/00

    CPC分类号： B01J31/2213 ,  B01D3/322 ,  B01J31/122 ,  B01J31/223 ,  B01J2231/4288 ,  B01J2531/42 ,  C07C68/00 ,  C07C69/96

    摘要： A process for producing dialkyl carbonates, such as dimethyl carbonate, from the reaction of a primary alcohol with urea in the presence of a novel catalyst which is a complex of organotin with a high boiling electron donor compound acting as solvent which are bidentate ligands which form 1:1 bidentate and/or 1:2 monodentate adducts with R'2SnX2 (X=C1, R'O, R'COO or R'COS), R'3SnX, R'2SnO, Ph3-nR'SnXn or Ph4-nSnXn (wherein R'=CqH2q-1 n = 0, 1 or 2 and q = 2 to 12) and mixtures thereof, such as materials having the general formula RO[CH2(CH2)kCH2O]mR, wherein each R is independently selected from C1-12 alkyl, alkaryl or aralkyl moieties, k = 0, 1, 2 or 3 and m = 1, 2, 3, 4 or 5.