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    Process for the regeneration of alkanolamines by distillation, alkali hydroxide treatment, heat, phase separation and distillation
    41.
    发明授权
    Process for the regeneration of alkanolamines by distillation, alkali hydroxide treatment, heat, phase separation and distillation 失效
    通过蒸馏，碱性氢氧化物处理，热，相分离和蒸馏来再生烷基胺的方法

    公开(公告)号：US3664930A

    公开(公告)日：1972-05-23

    申请号：US3664930D

    申请日：1969-03-11

    Applicant: UCB SA

    Inventor： POTTIEZ FERNAND ,  VERBEEST RAPHAEL

    IPC: C07C215/08 ,  C10K1/16 ,  B01D3/34 ,  C07C91/04

    CPC classification number: C10K1/16

    Abstract: A process for the regeneration of dialkanolamines from their thermostable degradation products with impurities of gases, formed during the washing of said gases with dialkanolaminecontaining washing liquors, which comprises adding to the concentrated distillation residues containing said degradation products a 15 to 25% aqueous sodium hydroxide solution or a 25 to 35% aqueous potassium hydroxide solution, either containing the stoichiometric quantity of 100% NaOH or KOH, heating to boiling for at least 15 minutes whereupon two phases are obtained, an aqueous and an organic, decanting the latter and distilling it to eliminate alkali and excess water and recycling the regenerated alkanolamine to the gases washing stage.

    Abstract translation: 一种从含有二烷醇胺的洗涤液洗涤所述气体时形成的具有气体杂质的热稳定降解产物中再生二链烷醇胺的方法，该方法包括向含有所述降解产物的浓缩蒸馏残渣中加入15至25％ 氢氧化物溶液或25至35％氢氧化钾水溶液，其中含有化学计量的100％NaOH或KOH，加热至沸腾至少15分钟，从而得到两相，水和有机物，倾析后者并蒸馏 它消除碱和过量的水，并将再生的链烷醇胺再循环到气体洗涤阶段。

    2,4,6-trisubstituted derivatives of pyrimidine
    44.
    发明授权
    2,4,6-trisubstituted derivatives of pyrimidine 失效
    吡啶的2,4,6-取代衍生物

    公开(公告)号：US3624084A

    公开(公告)日：1971-11-30

    申请号：US3624084D

    申请日：1968-01-22

    Applicant: UCB SA

    Inventor： MATHIEU JACQUES

    IPC: A61K31/505 ,  C07D239/28 ,  C07D239/42 ,  C07D239/48 ,  C07D51/42 ,  C07D87/38

    CPC classification number: C07D239/48 ,  A61K31/505 ,  C07D239/28 ,  C07D239/42 ,  Y10S514/869 ,  Y10S514/929

    Abstract: IN WHICH R1 is hydrogen, lower alkyl, aralkyl, R2 is hydrogen, halogen, lower alkyl, hydroxyalkylamino, omegaaryl-omega-hydroxyalkylamino, morpholino, R3 is hydrogen, lower alkyl eventually hydroxyl-substituted, aralkyl, R4 is lower alkyl substituted by at least one hydroxyl group separated from N by at least two carbon atoms, or R3 and R4 together with the extranuclear N are morpholino, as well as their salts with inorganic or organic acids. These compounds are hypotensives, peripheral and coronary vasodilators, diuretics, bronchodilators, spasmolytics and circulatory and respiratory analeptics.

    New 2,4,6-trisubstituted pyrimidine derivatives of the general formula

    Process for the production of adiponitrile
    48.
    发明授权
    Process for the production of adiponitrile 失效

    公开(公告)号：US3616321A

    公开(公告)日：1971-10-26

    申请号：US3616321D

    申请日：1969-06-04

    Applicant: UCB SA

    Inventor： VERHEYDEN ALBERT ,  WALRAVENS JEAN

    IPC: C25B3/10 ,  C07B29/06 ,  C07C121/26

    CPC classification number: C25B3/105

    Abstract: Process of hydrodimerization of acrylonitrile to adiponitrile by the direct electrolytic route, by passing a direct electrical current through an electrolytic cell having the anode and cathode in contact with the electrolytic medium, which comprises using an initial electrolysis medium consisting essentially of (a) acrylonitrile, (b) water, (c) at least one alkali salt selected from the group consisting of the alkali salts of condensed polyphosphoric acids of the formula

    Continuous process for solvent purification of phosphoric acid
    49.
    发明授权
    Continuous process for solvent purification of phosphoric acid 失效
    用于溶剂净化磷酸的连续方法

    公开(公告)号：US3607029A

    公开(公告)日：1971-09-21

    申请号：US3607029D

    申请日：1968-05-09

    Applicant: PECHINEY SAINT GOBAIN ,  UCB SA

    Inventor： GORET JEAN R ,  WINAND LOUIS M

    IPC: C01B25/234 ,  C01F17/00 ,  C01B25/18

    CPC classification number: C01F17/0006 ,  C01B25/234

    Abstract: The process for extraction and purification of phosphoric acid from impure solutions of phosphoric acid derived by acid attack of phosphate rock wherein the impure solution is first passed in countercurrent flow with an alkyl derivative of phosphoric acid for removal of phosphoric acid from the impure solution and then passing the alkyl phosphoric acid derivative containing the removed phosphoric acid in countercurrent flow with an aqueous medium whereby the latter removes purified phosphoric acid from the solution.

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