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    • 1. 发明授权
    • Process for the preparation of dimeric fatty acid C1-4 alkyl esters
    • 制备二聚脂肪酸C 1-4烷基酯的方法
    • US06281373B1
    • 2001-08-28
    • US09081878
    • 1998-05-19
    • Setsuo SatoCarlos Alberto de MouraMichael SublettC. William Blewett
    • Setsuo SatoCarlos Alberto de MouraMichael SublettC. William Blewett
    • C11C100
    • C11C3/003
    • Process for the preparation of dimeric fatty acid C1-4 alkyl esters comprising the steps of A) reacting a soybean oil condensate obtained from the deodorization of refined soybean oil and which contains less than 30% by weight of free and esterified oleic acid based on the total weight of free and esterified fatty acids in said condensate, with a C1-4 alkanol in the presence of a zinc oxide catalyst to convert free fatty acids and fatty acid glyceride esters to fatty acid C1-4 alkyl esters; B) removing excess C1-4 alkanol, volatile reaction by-products, water, and the zinc oxide catalyst from the resulting reaction mixture; C) heating the reaction mixture from step B) under vacuum to obtain a distillate of fatty acid C1-4 alkyl esters; D) separating the distillate from step C) into a fraction containing mostly C16-18 saturated fatty acid C1-4 alkyl esters and a second fraction containing mostly C16-18 unsaturated fatty acid C1-4 alkyl esters wherein the oleic acid C1-4 alkyl ester content is less than about 35% by weight thereof; and E) dimerizing said second fraction in the presence of montmorillonite clay.
    • 用于制备二聚脂肪酸C 1-4烷基酯的方法,包括以下步骤:A)将由精制大豆油除臭得到的大豆油缩合物与基于总计的含有少于30重量%的游离和酯化油酸反应 所述缩合物中游离和酯化的脂肪酸的重量与C1-4链烷醇在氧化锌催化剂存在下将游离脂肪酸和脂肪酸甘油酯转化为脂肪酸C 1-4烷基酯; B)除去过量的C 1 -C 4烷基酯, 4链烷醇,挥发性反应副产物,水和氧化锌催化剂; C)在真空下加热来自步骤B)的反应混合物,得到脂肪酸C 1-4烷基酯的馏出物; D)分离 来自步骤C)的馏出物成为主要含有C 16-18饱和脂肪酸C 1-4烷基酯的馏分和主要含有C 16-18不饱和脂肪酸C 1-4烷基酯的第二馏分,其中油酸C 1-4烷基酯含量 小于约35重量%; 和E)在蒙脱石粘土存在下使所述第二级分二聚。