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    PROCESS FOR IMPROVING THE CONVERSION OF OXAZOLIDONES TO ALKANOLAMINES
    54.
    发明申请
    PROCESS FOR IMPROVING THE CONVERSION OF OXAZOLIDONES TO ALKANOLAMINES 失效
    用于改善氧化亚烷基转化为烷醇胺的方法

    公开(公告)号：US20080039659A1

    公开(公告)日：2008-02-14

    申请号：US11463182

    申请日：2006-08-08

    申请人： Michael L.H. Turoff ,  Arthur Lee Cummings ,  Scott William Waite ,  Robert Lee Horan

    发明人： Michael L.H. Turoff ,  Arthur Lee Cummings ,  Scott William Waite ,  Robert Lee Horan

    IPC分类号： C07C209/62

    CPC分类号： C07C213/10 ,  C07C213/02 ,  C07C215/12

    摘要： There is provided a regeneration process for converting oxazolidones such as hydroxypropyloxazolidone (HPOZD) to alkanolamines such as di-isopropanolamine (DIPA) and CO2. An amine stream containing HPOZD joins a stream that includes a caustic solution. The combined stream is passed to a tank where the caustic reacts with HPOZD to convert it to DIPA and CO2. The conversion of HPOZD to DIPA and CO2 requires a ratio of at least 2 moles of hydroxide for each mole of HPOZD in the solution. The conversion reaction is carried out in a reaction vessel at a temperature above 60° C. The reaction mixture is held in a feed tank for approximately 2 hours while being constantly mixed. After the reaction is completed, the mixture is allowed to settle which results in the virtually complete separation of the amine phase (containing DIPA, and water) from the caustic phase. After an appropriate settling interval, a portion of the caustic phase is drawn from the reaction mixture as a waste/neutralization stream while the other portion of the caustic phase and a very small portion of the amine phase may be sent to a recycle tank for use in subsequent reaction steps. The majority of the amine phase is treated using ion exchange resins to remove excess cations from the amine and clean amine is returned to the amine system.

    摘要翻译： 提供了将恶唑烷酮如羟丙基恶唑烷酮（HPOZD）转化为链烷醇胺如二异丙醇胺（DIPA）和CO 2 2的再生方法。 含有HPOZD的胺流连接包含苛性碱溶液的流。 将合并的流送入罐中，其中苛性碱与HPOZD反应以将其转化为DIPA和CO 2。 HPOZD转化为DIPA和CO 2需要在溶液中每摩尔HPOZD至少2摩尔氢氧化物的比例。 转化反应在高于60℃的温度下在反应容器中进行。将反应混合物在不断混合的同时在进料罐中保持约2小时。 反应完成后，使混合物沉降，导致胺相（含有DIPA和水）几乎完全从苛性相分离。 在适当的沉降间隔后，一部分苛性相作为废物/中和流从反应混合物中抽出，而碱相的另一部分和胺相的一小部分可以送到循环罐中使用 在随后的反应步骤中。 使用离子交换树脂处理大部分胺相以从胺中除去过量的阳离子，并将清洁的胺返回到胺体系中。

    Preparation of alkanolamines
    55.
    发明申请
    Preparation of alkanolamines 审中-公开
    烷醇胺的制备

    公开(公告)号：US20070282128A1

    公开(公告)日：2007-12-06

    申请号：US11879265

    申请日：2007-07-17

    申请人： Wei Wang ,  Farhad Fadakar

    发明人： Wei Wang ,  Farhad Fadakar

    IPC分类号： C07C211/01

    CPC分类号： C07C213/10 ,  C07C215/12

    摘要： Alkanolamine compositions are disclosed. The composition comprises an alkanolamine and hydroxylamine or hydrazine. Preferred alkanolamine includes diethanolamine, triethanolamine, and mixtures thereof. The composition of the invention has significantly reduced discoloration.

    摘要翻译： 公开了烷醇胺组合物。 该组合物包含链烷醇胺和羟胺或肼。 优选的链烷醇胺包括二乙醇胺，三乙醇胺及其混合物。 本发明的组合物显着降低了变色。

    Process for preparing ethanolamine with improved colour
    59.
    发明申请
    Process for preparing ethanolamine with improved colour 审中-公开
    改进颜色制备乙醇胺的方法

    公开(公告)号：US20060142615A1

    公开(公告)日：2006-06-29

    申请号：US10559707

    申请日：2004-05-12

    申请人： Daniel Brun-Buisson ,  Mathias Mauvezin ,  Florence Ponsi

    发明人： Daniel Brun-Buisson ,  Mathias Mauvezin ,  Florence Ponsi

    IPC分类号： C07C213/02

    CPC分类号： C07C213/08 ,  C07C213/10 ,  C07C215/08 ,  C07C215/10

    摘要： The present invention relates to a process for preparing an ethanolamine having an improved colour quality. The process comprises contacting ethanolamine with an activated carbon free of one or more metals chosen from Re, Ru, Rh, Pd, Os, Ir, Pt and Ag. The contacting can be carried out at a temperature of from 10 to 200° C., and during a period sufficient to reduce the colour of the ethanolamine, in particular a period such that the colour index (as measured according to the ASTM standard D 1209) of the ethanolamine becomes equal to or less than 50 or 40 Pt/Co. The contacting can be carried out during or after the stage of preparation of the ethanolamine, preferably during or after the stage of purification of the ethanolamine. The invention also relates to a process for manufacturing a triethanolamine (TEA) having an improved colour quality, comprising a stage (i) of synthesis of the TEA by contacting ammonia with ethylene oxide in aqueous medium, a stage (ii) of separation of a crude TEA from the aqueous medium and a stage (iii) of purification of the TEA by distillation. The process in addition comprises contacting the crude or purified TEA with an activated carbon free of one or more metals chosen from Re, Ru, Rh, Pd, Os, Ir, Pt and Ag, after the separation stage (ii), or during and after the purification stage (iii). The advantage of the claimed invention is provide an ethanolamine which has an improved colour quality far more resistant over time, and which is obtained in the absence of any additive or metal catalyst known to contaminate the ethanolamine.

    摘要翻译： 本发明涉及一种具有改进的颜色品质的乙醇胺的制备方法。 该方法包括使乙醇胺与不含选自Re，Ru，Rh，Pd，Os，Ir，Pt和Ag的一种或多种金属的活性炭接触。 接触可以在10-200℃的温度下进行，并在足以降低乙醇胺颜色的时间内进行，特别是使颜色指数（根据ASTM标准D 1209测量） ）等于或小于50或40 Pt / Co。 接触可以在乙醇胺的制备阶段期间或之后进行，优选在乙醇胺纯化阶段期间或之后进行。 本发明还涉及一种制备具有改进的颜色质量的三乙醇胺（TEA）的方法，其包括通过使氨水与水性介质中的环氧乙烷接触来合成TEA的步骤（i）， 来自水介质的粗TEA和通过蒸馏纯化TEA的阶段（iii）。 该方法还包括在分离阶段（ii）之后，或者在分离阶段（ii）期间，或者在和/或之前，将粗制或纯化的TEA与不含选自Re，Ru，Rh，Pd，Os，Ir，Pt和Ag的一种或多种金属的活性炭接触 在纯化阶段（iii）之后。 所要求保护的发明的优点是提供一种具有改善的颜色质量的乙醇胺，其随着时间的推移具有更强的抗性，并且在没有任何已知污染乙醇胺的添加剂或金属催化剂的情况下获得。