PURPOSE: To easily and economically provide above mentioned compounds useful as skin protective additives, pharmaceutical additive, bath additive and solubilizers of cosmetics and pharmaceuticals by reacting polyglycerol mixture with fatty acids in a certain molar ratio.
CONSTITUTION: By reacting a mixture of 8-24C fatty acid, from 0 to 5% by weight (hereinafter referred %) monoglycerol, from 15 to 40% diglycerol, from 30 to 55% triglycerol, from 10 to 25% tetraglycerol and from 0 to 30% higher polyglycerol, in a molar ratio of the polyglycerol to the fatty acid of from 0.3:1 to 1.5:0.5, in the presence of acid catalysts at a reduced pressure and at temperature of from 140°C to 220°C, the above mentioned compounds, which are liquid at a room temperature, are readily processed and introduced to process and have viscosity, oil-restoring ability and/or skin protectivity, are particularly useful as cosmetic and pharmaceutical solubilizers, are obtained.
BUERUNAA JIIMANOFUSUKII
KAARUUHAINTSU UURIHI
