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    • 7. 发明授权
    • Method for producing fatty acid esters
    • 脂肪酸酯的制造方法
    • US06211390B1
    • 2001-04-03
    • US09269090
    • 1999-12-03
    • Siegfried PeterRuth GanswindtEckhard Weidner
    • Siegfried PeterRuth GanswindtEckhard Weidner
    • C07C5100
    • C11C3/003C07C67/58C07C69/52
    • The invention concerns a method for producing fatty acid esters from fatty acid triglyceride and in particular from animal or vegetable fats and oils by transesterification with a monovalent low-molecular weight alcohol in the presence of a homogeneous or heterogeneous catalyst. In accordance with the invention, the formed fatty acid ester is extracted from the reaction mixture by means of a near-critical extractant. In this way fatty acid esters are obtained at high yield and excellent purity. As the extractant preferably a low pressure gas having a reduced temperature at 20° C. of about 0.7, preferably of equal to or greater than 0.7, is employed. Preferred extractants are carbon dioxide, propane, butane, dimethyl ether, ethyl acetate or mixtures thereof.
    • 本发明涉及一种通过在均相或多相催化剂存在下通过与一价低分子量醇的酯交换从脂肪酸甘油三酯,特别是动物或植物脂肪和油制备脂肪酸酯的方法。 根据本发明,通过近临界萃取剂从反应混合物中提取形成的脂肪酸酯。 以这种方式获得高产率和优异纯度的脂肪酸酯。 作为萃取剂,优选使用在20℃下的温度降低约0.7,优选等于或大于0.7的低压气体。 优选的萃取剂是二氧化碳,丙烷,丁烷,二甲醚,乙酸乙酯或其混合物。