会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 53. 发明授权
    • Process for the preparation of butane-1,4-diol, &ggr;-butyrolactone and tetrahydrofuran
    • 丁烷-1,4-二醇,γ-丁内酯和四氢呋喃的制备方法
    • US06204395B1
    • 2001-03-20
    • US09554239
    • 2000-06-29
    • Michael W. M. TuckMichael A. WoodAndrew G. Hiles
    • Michael W. M. TuckMichael A. WoodAndrew G. Hiles
    • C07D30708
    • C07D315/00C07C29/149C07C31/207
    • A process is described for the production of butane-1,4-diol, &ggr;-butyrolactone and/or tetrahydrofuran. A vaporous stream containing maleic anhydride, water, and carbon oxides is contact in an absorption zone with a high boiling ester as solvent to form a solution of maleic anhydride in the high boiling ester which has a boiling point at the atmospheric pressure at least about 30° C. higher than that of maleic anhydride and is selected from di-(C1 to C4 alkyl) esters of alkyl dicarboxylic acids containing up to 3 carbon atoms, mono- and di-(C10 to C18 alkyl) esters of maleic acid, fumaric acid, succinic acid, and mixtures thereof, (C1 to C4 alkyl) esters of naphthalene-monocarboxylic acids, tri-(C1 to C4 alkyl) esters of aromatic tricarboxylic acids, and di-(C1 to C4 alkyl) esters of isophthalic acid. The maleic anhydride in the solution is stripped with a gaseous stream containing hydrogen thereby forming a vaporous stream comprising hydrogen and maleic anhydride, which is contacted in a hydrogenation zone with a heterogeneous hydrogenation catalyst to convert maleic anhydride to at least one C4 compound selected from butane-1,4-diol, &ggr;-butyrolactone and tetrahydrofuran.
    • 描述了制备丁烷-1,4-二醇,γ-丁内酯和/或四氢呋喃的方法。 含有马来酸酐,水和碳氧化物的气流在吸收区与高沸点酯作为溶剂接触,形成马来酸酐在高沸点酯中的溶液,其沸点在大气压至少约30℃ ℃,高于马来酸酐,并且选自含有至多3个碳原子的烷基二羧酸的二(C1-C4烷基)酯,马来酸的单 - 和二 - (C 10 -C 18烷基)酯,富马酸 酸,琥珀酸及其混合物,萘 - 一元羧酸的(C1-C4烷基)酯,芳族三羧酸的三(C1-C4烷基)酯和间苯二甲酸的二(C1-C4烷基)酯。 溶液中的马来酸酐用含有氢气的气流汽提,从而形成包含氢气和马来酸酐的蒸气流,其在氢化区与非均相氢化催化剂接触以将马来酸酐转化成至少一种选自丁烷的C 4化合物 -1,4-二醇,γ-丁内酯和四氢呋喃。