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    • 4. 发明授权
    • Process for the manufacture of glycols and glycol nono-esters
    • 制备二醇和乙二醇非酯的方法
    • US4061868A
    • 1977-12-06
    • US616602
    • 1975-09-25
    • Carlo FumagalliGiuseppe CapraraPaolo Roffia
    • Carlo FumagalliGiuseppe CapraraPaolo Roffia
    • C07C69/16B01J23/00B01J23/76B01J27/06B01J31/00C07B61/00C07C67/05C07C29/04
    • B01J23/76B01J27/06C07C67/05
    • There is provided an improvement in the process for the preparation of organic monoesters of vicinal glycols and the corresponding free glycols by reacting an olefin with oxygen, water and a carboxylic acid, in the liquid phase, at an initial pH of lower than 7, the improvement comprising contacting the reaction mixture with a catalyst system consisting essentially of (i) iodine or an iodine compound selected from the group consisting essentially of copper iodide, manganese iodide, cerium iodide, an alkali metal iodide, an alkali earth metal iodide and the iodohydride of the olefin, (ii) a copper compound selected from the group consisting essentially of copper oxide, copper hydroxide, copper carbonate, copper iodide, and a copper salt of the carboxylic acid, and (iii) an activating ion selected from the group consisting of manganese cation, cerium cation, an alkali metal cation, an alkaline earth metal cation, nitric anion or a mixture of any of the foregoing, wherein the molar ratio of the carboxylic acid to water is lower than 1, the molar ratio of copper to water is equal to or lower than 2 moles of copper per 100 moles of water, and the molar ratio of iodine to copper is lower than 1.
    • 在初始pH低于7时,在液相中使烯烃与氧,水和羧酸反应制备连位二醇的有机单酯和相应的游离二醇的方法提供了改进, 改进包括使反应混合物与基本上由(i)碘或选自基本上由碘化铜,碘化锰,碘化铈,碱金属碘化物,碱土金属碘化物和碘化氢组成的组中的碘化合物组成的催化剂体系 的烯烃,(ii)选自基本上由氧化铜,氢氧化铜,碳酸铜,碘化铜和羧酸铜盐组成的组中的铜化合物,和(iii)选自以下的活化离子: 的锰阳离子,铈阳离子,碱金属阳离子,碱土金属阳离子,硝酸阴离子或上述任何一种的混合物,其中摩尔比 的羧酸与水的摩尔比低于1,铜与水的摩尔比等于或低于每100摩尔水中2摩尔铜,碘与铜的摩尔比低于1。