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    • 2. 发明授权
    • Process for co-producing olefins and diesters or diacids starting from unsaturated fats
    • 从不饱和脂肪开始共聚产生烯烃和二酯或二酸的方法
    • US07906663B2
    • 2011-03-15
    • US11626077
    • 2007-01-23
    • Hélène Olivier-BourbigouChristophe ValleeGérard Hillion
    • Hélène Olivier-BourbigouChristophe ValleeGérard Hillion
    • C07C51/00
    • C07C51/347C07C1/213C07C6/04C07C67/333C07C67/475C07C2531/24C07C11/04C07C11/02C07C57/13C07C69/533C07C69/593
    • In order to produce both an olefinic fraction and a composition of diacids or diesters of fats, a process is carried out which comprises, in succession: a) metathesis of an unsaturated fat with ethylene in the presence of at least one non-aqueous ionic liquid; b) separating and recycling the ionic liquid used in the first step; c) separating, by distillation, the olefinic fraction (fraction A) from the unsaturated fat mono-ester or mono-basic acid fraction (fraction B) formed in step a); d) homometathesis of the mono-unsaturated fat ester or acid cut (fraction B) which allows the co-production of unsaturated fat diesters or diacids (fraction C) and ethylene which is recycled to the first methathesis step of the process; and e) optionally, recycling the ionic liquid containing the catalyst used in step d). Of particular application to an oleic sunflower oil, an oleic rapeseed oil or to a mixture of mono-alcohol esters of said oils, whereupon the process can produce both an olefinic fraction (mainly composed of 1-decene) and a composition of diesters or diacids wherein, in general, over half of the chains is constituted by unsaturated C18 chains (mainly composed of octadecene-9 1,18-iacid or diester) and to recycle the ethylene employed.
    • 为了产生烯烃级分和脂肪二酸或二酯的组合物,进行了以下过程:a)在至少一种非水离子液体的存在下,不饱和脂肪与乙烯的复分解 ; b)分离和再循环第一步中使用的离子液体; c)通过蒸馏从步骤a)中形成的不饱和脂肪单酯或单碱性酸部分(级分B)分离出烯烃级分(级分A); d)单不饱和脂肪酯或酸切割(B馏分)的同位素,其允许共生产不饱和脂肪二酯或二酸(馏分C)和乙烯,其被再循环到该方法的第一个复分解步骤; 和e)任选地,循环含步骤d)中使用的催化剂的离子液体。 特别适用于油酸向日葵油,油菜菜籽油或所述油的单醇酯的混合物,于是该方法可以产生烯​​烃级分(主要由1-癸烯组成)和二酯或二酸的组合物 其中通常一半以上的链由不饱和C18链(主要由十八碳烯-9,18-酸或二酯组成)构成,并循环使用乙烯。