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    • 1. 发明授权
    • Process for the production and isolation of monoalkyl phosphoric acid
esters
    • 单烷基磷酸酯的生产和分离方法
    • US4874883A
    • 1989-10-17
    • US150691
    • 1988-01-29
    • Guenter UphuesUwe PloogKlaudia Bischof
    • Guenter UphuesUwe PloogKlaudia Bischof
    • C07F9/09C07F9/11
    • C07F9/09
    • In the production of monoalkylphosphoric acid esters, at least one fatty alcohol or mixtures of fatty alcohols containing from 8 to 18 carbon atoms and preferably from 12 to 14 carbon atoms in a straight chain is/are reacted with a 0.2 to 2 molar excess of polyphosphoric acid at a temperature of 60.degree. to 130.degree. C.; following an after-reaction time of 120 to 300 minutes at a temperature of 95.degree. to 105.degree. C., the product of this reaction is slowly hydrolyzed at 90.degree. to 100.degree. C. with 0.5 to 1.0 mole water, based on the quantity of phosphorus atoms in the reaction mixture, the hydrolysis product is neutralized to a level of from 40 to 65% and preferably to a level of from 50 to 60%, based onthe acid number, with dilute alkali metal hydroxide, and the two phases formed are separated from one another after a residence time of 30 to 180 minutes at a temperature in the range of from 50.degree. to 95.degree. C.
    • 在单烷基磷酸酯的制备中,直链中含有8至18个碳原子,优选12至14个碳原子的至少一种脂肪醇或脂肪醇的混合物与0.2至2摩尔过量的多磷酸 酸在60〜130℃的温度下进行。 在95〜105℃的温度下进行120〜300分钟的反应后的反应时间,将该反应产物在90〜100℃下用0.5〜1.0摩尔水缓慢水解, 的反应混合物中的磷原子,水解产物被中和至基于酸值的40至65%,优选至50至60%的水平,稀碱金属氢氧化物,并形成两相 在50〜95℃的温度下,在30〜180分钟的停留时间之间相互分离。