초록 ▼

An improved solvent-free transesterification process for producing higher polyol fatty acid polyesters is disclosed. In this process a mixture of a polyol, a fatty acid methyl, 2-methoxy ethyl or benzyl ester, an alkali metal fatty acid soap, and a basic catalyst, having a molar ratio of soap:polyol

An improved solvent-free transesterification process for producing higher polyol fatty acid polyesters is disclosed. In this process a mixture of a polyol, a fatty acid methyl, 2-methoxy ethyl or benzyl ester, an alkali metal fatty acid soap, and a basic catalyst, having a molar ratio of soap:polyol of from about 0.6:1 to about 1:1, preferably from about 0.75:1 to about 1:1, is heated to form a homogeneous melt. To this melt is subsequently added excess fatty acid methyl, 2-methoxy ethyl or benzyl ester, yielding the desired polyol fatty acid polyesters.

대표청구항 ▼

In a solvent-free transesterification process for synthesizing higher polyol fatty acid polyesters comprising the steps of: (1) heating a mixture of (a) a polyol selected from a group consisting of monosaccharides, disaccharides and sugar alcohols, (b) a fatty acid ester selected from the group cons

In a solvent-free transesterification process for synthesizing higher polyol fatty acid polyesters comprising the steps of: (1) heating a mixture of (a) a polyol selected from a group consisting of monosaccharides, disaccharides and sugar alcohols, (b) a fatty acid ester selected from the group consisting of methyl esters, 2-methoxy ethyl esters, benzyl esters, and mixtures thereof, (c) an alkali metal fatty acid soap, and (d) a basic catalyst, to a temperature of from about 110°C. to about 180°C. at a pressure of from about 0.1 mm to about 760 mm of mercury to form a homogeneous melt; and (2) subsequently adding to the reaction product of step (1) excess fatty acid ester selected from the group consisting of methyl esters, 2-methoxy ethyl esters, benzyl esters, and mixtures thereof; the improvement wherein the molar ratio of soap:polyol in step (1) is from about 0.6:1 to about 1:1.