BigPatents India

The present invention relates to a polyglycerol significantly reduced in content of a polyglycerol having a cyclic structure formed by removal of a water molecule from a polyglylcerol molecule, and to a fatty acid ester of a polyglycerol having excellent surface activity. 2 mole or more of glycidol and a catalyst are successively added to 1 mole of glycerol for a reaction to obtain a polyglycerol, in which a ratio of [total polyglycerol (1) ] to [total polyglycerol (2) having a cyclic structure] is [70% or more]/[30% or less] (the total of both is 100% by weight ) in terms of an intensity ratio determined by liquid chromatography/mass spectrometry; and an average polymerization degree “n” is 2 or more. A reaction of a polyglylcerol with a fatty acid provides the corresponding a fatty acid ester of the polyglycerol. (FIG.nil)