| abstract |
The present invention relates to a C22 plasticizer of a tri-acid tri-ester category. The plasticizer has a general structure as shown on the right, wherein, R1 is CH3 or C4H9, and R2 is CH3 or C4H9. The present invention also relates to a method of preparing the C22 tri-acid tri-ester plasticizer. The preparation method comprises the following steps: transesterification reaction of tung oil, esterifition of maleic anhydride and addition reaction. Eleostearic acid in the tung oil is used as a main raw material to synthesize the plasticizer. The plasticizer in the category has the advantages of small mobility, low volatility, good miscibility to plastics, good flexibility, good durability and high flash point. |