| 摘要 |
PURPOSE: To obtain the subject compound having high substitution degree, uniform appearance and excellent storage stability and surfactant action and useful as various detergents, emulsifiers, etc., by reacting a polyglycerol with a fatty acid in the presence of a specific amount of an alkali catalyst. CONSTITUTION: The objective compound having an esterification degree of >=40%, an OH value of <=170mgKOH/g and a high substitution degree is produced by reacting (A) a polyglycerol having an average polymerization degree of <7 with (B) a fatty acid such as lauric acid or stearic acid in the presence of (C) 0.02-0.25mol%, especially 0.07-0.22mol% (based on the component B) of an alkali catalyst (e.g. potassium hydroxide or sodium hydroxide). Preferably, the reaction is carried out at >=180 deg.C and the temperature is further raised by 10-80 deg.C when the conversion of the component B reaches >=70mol%. |
