Process for the production of N, N, N′, N′,-tetra-(2-hydroxyethyl)ethylene diamine
    1.
    发明授权
    Process for the production of N, N, N′, N′,-tetra-(2-hydroxyethyl)ethylene diamine 失效
    制备N,N,N',N', - 四 - (2-羟乙基)乙二胺的方法

    公开(公告)号:US06222075B1

    公开(公告)日:2001-04-24

    申请号:US09331048

    申请日:1999-07-08

    IPC分类号: C07C21300

    CPC分类号: C07C213/04 C07C215/14

    摘要: A process is described for the production of N,N,N′,N′-tetra-(2-hydroxyethyl)-ethylene diamine in a solvent, in which ethylene diamine is reacted selectively with ethylene oxide in the absence of water in one or more saturated C3-C9 alcohols at a temperature from 120 to 220° C. and at a pressure from 2 to 60 bar in a molar ratio of 1:4, with a high yield. The conversion is preferably carried out in isopropanol, isomeric C7-C9 alcohol mixtures, C8 alcohol mixtures or C9 alcohol mixtures at a temperature from 140 to 180° C.

    摘要翻译: 描述了在溶剂中制备N,N,N',N'-四 - (2-羟乙基) - 亚乙基二胺的方法,其中在不存在水的情况下,乙二胺与环氧乙烷选择性地与环氧乙烷反应, 更高饱和的C3-C9醇,温度为120-220℃,压力为2至60巴,摩尔比为1:4,产率高。 转化率优选在异丙醇,异构体C7-C9醇混合物,C8醇混合物或C9醇混合物中在140-180℃的温度下进行。

    Process for preparing betaines
    2.
    发明授权
    Process for preparing betaines 失效
    制备甜菜碱的方法

    公开(公告)号:US06624327B1

    公开(公告)日:2003-09-23

    申请号:US10048876

    申请日:2002-05-02

    IPC分类号: C07C22900

    CPC分类号: C07C227/02 C07C229/12

    摘要: The invention relates to a process for preparing betaines of formula (I) wherein R1 represents a C1-C24 hydrocarbon group, and R2 and R3 independently represent a C1-C3 hydrocarbon group, comprising reacting an aqueous solution of an ethoxylated quaternay ammonium compound of formula (II) wherein R1, R2, and R3 have the same meaning as described above and X− represents a suitable anion, with oxygen or an oxygen-containing gas under alkaline conditions in the presence of a supported and promoted Pt catalyst at a temperature ranging from room temperature to 70° C. Preferably, use is made of a Pt/Bi/C catalyst. The invention process is particularly suitable for converting choline chloride into betaine, which is used as an animal feed

    摘要翻译: 本发明涉及一种制备式(I)的甜菜碱的方法,其中R 1表示C 1 -C 24烃基,R 2和R 3独立地代表C 1 -C 3烃基,其包括使水 式(II)的乙氧基化季铵化合物的溶液,其中R 1,R 2和R 3具有与上述相同的含义,X 1代表适合的阴离子,与氧或氧 在负载和促进的Pt催化剂存在下,在碱性条件下,在室温至70℃的温度范围内,优选使用Pt / Bi / C催化剂。 本发明方法特别适用于将氯化胆碱转化为甜菜碱,其用作动物饲料