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    • 9. 发明申请
    • PRODUCTION OF ETHER CARBOXYLIC ACIDS AND THEIR SALTS
    • 使他们的SALTS羧酸和
    • WO1995028375A1
    • 1995-10-26
    • PCT/EP1995001240
    • 1995-04-05
    • HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN
    • HENKEL KOMMANDITGESELLSCHAFT AUF AKTIENNOACK, Wolf-EckartSCHULZ, Paul
    • C07C59/125
    • C07C51/235C07C59/125
    • A process for the production of ether carboxylic acids or their salts of the formula (I): R-(OCmH2m)n-O-CH2COOM in which R is an alkyl group with 1 to 22 carbon atoms, an aryl group or an aralkyl group, m is 2 and/or 3, n is a whole number from 1 to 200 and M is an alkaline metal, in which ether alcohols of the general formula (II): R-(OCmH2m)n-O-CH2CH2OH in which R, m and n mean the same as above, are oxidised in aqueous solution in the presence of alkaline metal hydroxide and noble metal catalysts at a temperature between 50 and 130 DEG C with pure oxygen. The ether alcohol of formula (II) is in a concentration on 0.1 and 15 wt % in relation to the total weight of the reaction mixture and is virtually constant during the reaction, and the salt obtained may be converted into acid. This process is characterized in that the reaction vessel is first filled only with catalyst and water and evacuated to a pressure of 0.01 to 0.1 bar at room temperature before the reaction and in that there is a partial oxygen pressure of 0.01 to 0.6 bar during the reaction.
    • 一种用于其制备具有式(I)醚羧酸或其盐R-(OCM H2M)N-CH 2 COOM,其中R是具有1至22个碳原子,芳基或芳烷基的烷基过程中,m是数字2和/或3, n表示整数1〜200,m为碱金属,其特征在于,具有通式(II)R-(OCM H2M)正CH2CH2OH,其中和n如上述所定义的R,米,在水性溶液中的一种醚醇 在50和130℃之间的温度下用纯氧,氧化在碱金属氢氧化物和贵金属催化剂的存在下,其中,在浓度为0.1至15重量%的具有式(II)中,基于反应混合物的总重量的醚醇, 存在,这是在反应过程中,如果需要几乎恒定的,得到的盐转化成酸,其特征在于该反应的反应器,首先仅与水和催化剂并且在与Raumtemperat反应填充 乌尔在反应0.01氧分压至0.6巴期间抽真空至0.01〜0.1巴的压力,并且本。