モノオレオイルグリセリン合成反応と反応生成物
1982 年 31 巻 12 号 p. 1021-1026
詳細
1982 年 31 巻 12 号 p. 1021-1026
Investigations on the direct esterification of oleic acid and equimolecular or a large excess of glycerol were carried out under the conditions of reaction temperatures at 125280°C, for 36h in the absence of a catalyst. Reaction products were determined by the TLS.
1) The optimum preparative conditions for maximum monooleoylglycerol were given and under these, quantitative results of the product were obtained as follows : Molar ratio of oleic acid and glycerol, 1 : 5, Reaction temperature and time, 250°C, 3h, Weight ratio of component, monooleoylglycerol (MO) 78% (1-MO 52%, 2-MO 26%), dioleoylglycerol (DO) 21% (1, 3-DO 1.3%, 1, 2-DO 8%), trioleoylglycerol and oleic acid, trace.
2) It was recognized that reactioas of oleic acid (O) with glycerol (G) could be separated into three types :
(a) Esterification (molar ratio of O/G=1/1, at 125200°C)
(b) Reactions among acylglycerols formed by esterification (O/G=1/1, approximately at 250°C)
(c) Glycerolysis (O/G=1/3, 1/5, approximately at 250°C)
