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    process for producing hydrogenated aromatic polycarboxylic acid and process for producing hydrogenated aromatic polycarboxylic anhydride
    1.
    发明公开
    process for producing hydrogenated aromatic polycarboxylic acid and process for producing hydrogenated aromatic polycarboxylic anhydride 有权
    一种用于生产氢化的芳族多元羧酸和工艺过程制备氢化的芳族Polykarbonsäureanhydrid

    公开(公告)号：EP1323700A1

    公开(公告)日：2003-07-02

    申请号：EP02028941.9

    申请日：2002-12-24

    申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.

    发明人： Zaima, Fumiya, c/o Mitsubishi Gas Chem. Co., Inc.

    IPC分类号： C07C51/36 ,  C07C51/56 ,  C07C61/09 ,  C07C61/12 ,  C07C61/125 ,  C07C61/24

    CPC分类号： C07C51/36 ,  C07D307/89 ,  C07C61/08

    摘要： Disclosed are processes for industrially advantageously producing at a good yield respectively, a hydrogenated aromatic polycarboxylic acid and an acid anhydride thereof each having a high purity. The present invention provides processes for producing a hydrogenated aromatic polycarboxylic acid by (1) hydrogenating an aromatic polycarboxylic acid at a hydrogen partial pressure of 1 MPa or more by a batch system in the presence of a catalyst containing rhodium and palladium in a proportion of 0.5 to 10 parts by weight per 100 parts by weight of the aromatic polycarboxylic acid and by (2) feeding an aromatic polycarboxylic acid to a filling bed of a catalyst containing rhodium and palladium at a WHSV of 1 to 100 h -1 to hydrogenate it at a hydrogen partial pressure of 1 MPa or more by a continuous flow system, and a process for producing a hydrogenated aromatic polycarboxylic anhydride by subjecting the hydrogenated aromatic polycarboxylic acid obtained by the processes described above to dehydration reaction with acetic anhydride of 0.64 to 5.7 times mole based on a carboxyl group of the hydrogenated aromatic polycarboxylic acid.

    摘要翻译： 公开的是用于以良好的产率分别是氢化的芳族多元羧酸工业上有利地制造和酸酐或其每一个都具有高纯度的处理。 本发明提供了用于在含有铑和钯中的0.5的比例的催化剂的存在下，通过间歇式系统在1MPa以上的氢分压产生由（1）芳族多元羧酸的氢化一氢化芳族多元羧酸 至10重量份每100重量份的芳香族多羧酸的和由（2）芳族多元羧酸的进料以1到100小时的WHSV含铑和钯的催化剂的填充床<-1>氢化 它在通过连续流动系统1MPa以上的氢分压，以及用于通过使通过上述脱水反应中与0.64到5.7的乙酸酐的方法获得的氢化的芳族多元羧酸制备氢化的芳族多羧酸酐的方法 倍摩尔基于羧基的氢化的芳族多元羧酸的。