| abstract |
The invention discloses a preparation method of a polyhydric alcohol epoxy fatty acid ester plasticizer. Stir and mix in the vessel, and heat to 150-180°C, remove the water generated by the reaction through a water separator, and stop heating to terminate the reaction after no water is generated; (2) Continue heating to 130-160°C to remove unreacted epoxy Fatty acid, cooled to below 70℃, decolorized by activated carbon and filtered to obtain polyol fatty acid ester. The preparation of the polyol epoxy fatty acid ester plasticizer of the present invention adopts polyol and epoxy fatty acid as raw materials, and the polyol epoxy fatty acid ester obtained by esterification has good plasticizing effect, and is safe and non-toxic . |