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
    • 39. 发明申请
    • TWO-STAGE PROCESS FOR THE HYDROGENATION OF MALEIC ACID TO 1,4-BUTANEDIOL
    • 将马来酸加成1,4-丁二醇的两步法
    • WO02018316A2
    • 2002-03-07
    • PCT/US2001/026765
    • 2001-08-27
    • C07D307/33C07B61/00C07C29/149C07C31/20C07C51/36C07C55/10
    • C07C29/149C07C31/207
    • In the process for the conversion of maleic acid to gamma-butyrolactone. 1.4-butanediol and/or tetrahydrofuran, a feedstream comprising maleic acid is hydrogenated in a first hydrogenation zone to produce a reaction product comprising succinic acid and unreacted hydrogen which is then supplied to a second hydrogenation zone, where succinic acid is converted to 1,4-butanediol, the temper atures of the feedstream comprising maleic acid and the first hydrogenation zone are controlled such that the temperature of mal eic acid in the feedstream and the first hydrogenation zone does not exceed about 130 DEG C, thereby minimizing the corrosive effects of the maleic acid and prolonging reactor life and improving overall process economics.
    • 在马来酸转化为γ-丁内酯的过程中。 1,4-丁二醇和/或四氢呋喃中,将包含马来酸的进料流在第一氢化区中氢化以产生包含琥珀酸和未反应的氢的反应产物,然后将其供应到第二加氢区,其中琥珀酸被转化为1,4 丁二醇,控制包含马来酸和第一氢化区的进料流的回火,使得进料流和第一氢化区中的异戊酸的温度不超过约130℃,从而最小化 马来酸和延长反应器寿命,提高整体工艺经济性。
    • 40. 发明申请
    • CONTINUOUS PROCESS FOR THE PRODUCTION OF OPTICALLY PURE (S)- beta -HYDROXY- gamma -BUTYROLACTONE
    • 用于生产光学纯(S)-β-羟基-γ-丁基酮的连续方法
    • WO02010147A1
    • 2002-02-07
    • PCT/KR2001/000071
    • 2001-01-17
    • C07D307/32C07D307/33
    • C07D307/33
    • Disclosed is a process for the production of optically pure (S)-beta-hydroxy-gamma-butyrolactone through the hydrogenation of substituted carboxylic acid derivatives. A solution containing 1 to 50 % by weight of a substituted carboxylic acid derivative is fed at a WHSV of 0.1 to 10 h , to a fixed bed reactor which is filled with a catalyst and maintained at a reaction temperature of 50 to 550 DEG C under a halogen partial pressure of 15 to 5,500 psig. The catalyst is composed of a noble metal as a catalytically effective ingredient which is impregnated in an inorganic oxide as a support. The molar ratio of the hydrogen to the substituted carboxylic acid derivative is maintained at a molar ratio of 1:1 to 10:1. The process can produce optically pure (S)-beta-hydroxy-gamma-butyrolactone with higher purities at higher yields than can conventional techniques. In addition to being relatively simple and environmentally friendly, the process is so economically favorable as to apply to industrial production.
    • 公开了通过取代的羧酸衍生物的氢化制备光学纯的(S)-β-羟基-γ-丁内酯的方法。 将含有1至50重量%的取代的羧酸衍生物的溶液以0.1至10小时的WHSV加入到固定床反应器中,该反应器填充有催化剂并保持在反应温度为50至 550℃,卤素分压为15-55psig。 催化剂由作为载体的无机氧化物中浸渍的催化有效成分的贵金属组成。 氢与取代的羧酸衍生物的摩尔比保持在1:1至10:1的摩尔比。 该方法可以以比常规技术更高的产率产生具有更高纯度的光学纯(S)-β-羟基-γ-丁内酯。 除了相对简单和环保,该工艺在经济上也适用于工业生产。