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    Production of 2-ethylhexan-1-al
    1.
    发明授权
    Production of 2-ethylhexan-1-al 失效
    2-乙基己烷-1-醇的制备

    公开(公告)号：US3903171A

    公开(公告)日：1975-09-02

    申请号：US11582771

    申请日：1971-02-16

    Applicant: BASF AG

    Inventor： TOUSSAINT HERBERT ,  BOETTGER GUENTER ,  SCHUSTER LUDWIG

    IPC: C07C45/62 ,  C07C47/02

    CPC classification number: C07C45/62 ,  C07C47/02

    Abstract: Improved process for the manufacture of 2-ethylhexan-1-al by hydrogenating 2-ethylhex-2-en-1-al at temperatures of from 80* to 160*C and at pressures of from 10 to 250 atmospheres in an irrigation zone in the presence of fixed-bed catalysts comprising platinum, palladium or ruthenium supported on carriers, the improvement comprising feeding crude 2-ethylhexan-1-al to the irrigation zone in an amount which is from 2 to 10 times the amount of freshly introduced 2-ethylhex-2-en-1-al.

    Abstract translation: 通过在80°至160℃的温度和10至250大气压的压力下在灌溉区中氢化2-乙基己-2-烯-1-醇来改进2-乙基己烷-1-醇的制备方法 包含负载在载体上的铂，钯或钌的固定床催化剂的存在，其改进包括将2-乙基己烷-1-醛粗品加入到冲洗区中，其量为新鲜引入的2- 乙基己-2-烯-1-基。

    Production of alkali metal salts of polyamine polyacetic acids
    4.
    发明专利
    Production of alkali metal salts of polyamine polyacetic acids 未知

    公开(公告)号：GB1137686A

    公开(公告)日：1968-12-27

    申请号：GB1882466

    申请日：1966-04-29

    Applicant: BASF AG

    Inventor： BOETTGER GUENTER ,  GUENTHERT PAUL ,  KINDLER HUBERT ,  STANGER HANS

    IPC: C07C20060101

    Abstract: 1,137,686. Alkali metal salts of polyamine polyacetic acids. BADISCHE ANILIN- & SODA-FABRIK A.G. 29 April, 1966 [30 April, 1965], No. 18824/66. Heading C2C. Alkali metal salts of polyamine polyacetic acids are continuously produced from a non- aromatic polyamine, formaldehyde and an alkali metal cyanide (or hydrocyanic acid and alkali metal hydroxide) in aqueous solution at elevated temperature by effecting the reaction in a multistage cascade of reactors with a continuous supply of the reactants wherein the polyamine and alkali metal cyanide are used in a stoichiometric excess over formaldehyde (main reaction) in at least one stage, adding the remainder of the reactants in a subsequent stage, and in at least one further stage an after-reaction takes place in which the alkali metal cyanide content of the reaction product is decreased to a concentration less than 0À1% by wt., and at the same time ammonia is removed continuously from all the stages. The reaction is suitably effected at 60-120‹ C. at a pressure, for example of 0À5 to 3 atmospheres and ammonia formed may be removed by generating steam during the reaction or by passing an inert gas through the reaction mixture. The reaction mixture preferably flows in succession through from 3 to 8 separate reaction zones and the formaldehyde is suitably employed as a 20 to 40 wt. per cent aqueous solution. The concentration of the alkali metal cyanide in the final stage may be determined by metering in to the solution a small amount of formaldehyde. In the examples, the tetra-sodium salt of ethylenediamine tetraacetic acid is prepared, some nitrilotriacetic acid also being obtained.

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