Plasticizer, plasticizer composition, heat-resistant resin composition and method for preparing the same

摘要

Disclosed are a plasticizer that, when used for a heat-resistant resin composition, improves elongation retention, enhances aging resistance and heat resistance, and exhibits superior tensile strength, tensile strength retention, heating loss or the like before and after heating, thus contributing to enhancement in physical properties of the heat-resistant resin, a plasticizer composition, a heat-resistant resin composition and a method for preparing the same.

主权项

1. A method for preparing a plasticizer composition comprising:
mixing terephthalic acid with a solvent composed of a mixture of alcohols; adding a catalyst to obtained mixing material, followed by reacting under a nitrogen atmosphere; removing the unreacted alcohol and neutralizing the unreacted acid; and dehydrating the resulting substance by distillation under reduced pressure, followed by filtering, to obtain a terephthalate composition, as the plasticizer composition, comprising a terephthalate compound represented by Formula 1, a terephthalate compound represented by Formula 2, and a terephthalate compound represented by Formula 3, wherein the plasticizer composition comprises: 1 to 35% by weight of the terephthalate compound represented by Formula 1; 1 to 35% by weight of the terephthalate compound represented by Formula 2; and 64 to 80% by weight of the terephthalate compound represented by Formula 3: