Plasticizer and method for manufacturing the same

A method for manufacturing a plasticizer, comprising:

• mixing a dicarboxylic acid component, a diol, and a catalyst to form a reactant mixture, the dicarboxylic acid component including a first dicarboxylic acid and a second dicarboxylic acid, the second dicarboxylic acid being adipic acid, and the diol including diethylene glycol and 2-methyl-1, 3-propanediol;
• reacting the reactant mixture under a plurality of fixed temperature stages of a temperature-raising process, so as to form a semi-product;
• adding an endcapping alcohol into the semi-product at a temperature ranging from 205° C. to 220° C. so as to form a coarse plasticizer, the endcapping alcohol including isooctyl alcohol, isodecyl alcohol, or 2-propylheptanol, wherein the dicarboxylic acid component, the diol, and the endcapping alcohol have a molar ratio ranging from 1:0.6 to 0.9:0.3 to 0.6;
• and
• purifying the coarse plasticizer under a pressure ranging from 760 Torr to 5 Torr so as to obtain the plasticizer;
• wherein the plurality of fixed temperature stages includes a first fixed temperature stage, a second fixed temperature stage, a third fixed temperature stage, a fourth fixed temperature stage, and a fifth fixed temperature stage, a temperature range of the first fixed temperature stage ranges from 130° C. to 150° C., a temperature range of the second fixed temperature stage ranges from 150° C. to 170° C. a temperature range of the third fixed temperature stage ranges from 170° C. to 190° C., a temperature range of the fourth fixed temperature stage ranges from 190° C. to 205° C., and a temperature range of the fifth fixed temperature stage ranges from 205° C. to 220° C.