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    • 6. 发明授权
    • Process for preparing alkanediols
    • 制备烷二醇的方法
    • US5841003A
    • 1998-11-24
    • US685173
    • 1996-07-23
    • Lynn Henry SlaughPaul Richard WeiderJoseph Broun Powell
    • Lynn Henry SlaughPaul Richard WeiderJoseph Broun Powell
    • C07C29/141C07C45/58C07C27/00
    • C07C29/141C07C45/58
    • An alkanediol such as 1,3-propanediol is prepared in a process which involves reacting an alkylene oxide with carbon monoxide and hydrogen in an essentially non-water-miscible solvent in the presence of a non-phosphine-ligated cobalt catalyst and a lipophilic ruthenium promoter to produce an intermediate product mixture containing a hydroxyalkanal in an amount less than 15 wt %; extracting the hydroxyalkanal from the intermediate product mixture into an aqueous liquid at a temperature less than about 100.degree. C. and separating the aqueous phase containing hydroxyalkanal from the organic phase containing cobalt catalyst; hydrogenating the hydroxyalkanal in the aqueous phase to an alkanediol; and recovering the alkanediol. The process enables the production of an alkanediol such as 1,3-propanediol in high yields and selectivity without the use of a phosphine ligand-modified cobalt catalyst.
    • 在非磷化氢连接的钴催化剂和亲脂性钌的存在下,在一种基本上不与水混合的溶剂中使烯化氧与一氧化碳和氢气反应的方法制备1,3-丙二醇。 促进剂以产生含有小于15重量%的量的羟基卡那定的中间产物混合物; 在低于约100℃的温度下将羟基卡那酸从中间产物混合物中提取成水性液体,并将含有羟基卡那的水相与含钴催化剂的有机相分离; 将水相中的羟基卡那酸氢化成链烷二醇; 并回收链烷二醇。 该方法能够以高产率和选择性生产链烷二醇如1,3-丙二醇,而不需要使用膦配体改性的钴催化剂。