Dioctyl terephthalate (bis(2-ethylhexyl) benzene-1,4-dicarboxylate or Di(2-ethylhexyl) terephthalate), commonly abbreviated DOTP or DEHT, is an organic compound with the formula C6H4(CO2 C8H17)2. It is a non-phthalate plasticiser, being the diester of terephthalic acid and the branched-chain 2-ethylhexanol. This colorless viscous liquid used for softening PVC plastics is known for chemical similarity to general purpose phthalates such as DEHP and DINP, but without any negative regulatory pressure. It possesses very good plasticizing properties and may be used as a direct replacement for DEHP and DINP in many applications.
基本信息
Logp:6.433
生产方法
1、酯交换法 对苯二甲酸二甲酯与异辛醇在催化剂存在下进行酯交换,然后中和、洗涤、脱醇、脱色、压滤得到DOTP。 广泛用于无毒或与食品接触的聚氯乙烯(PVC)塑料制品中,可以完全替代DOP、DINP等邻苯二甲酸酯类增塑荆。非常适合要求色度低,透明性好,耐迁移性、耐久性高的产品。
用途
广泛用于无毒或与食品接触的聚氯乙烯(PVC)塑料制品中,可以完全替代DOP、DINP等邻苯二甲酸酯类增塑荆。非常适合要求色度低,透明性好,耐迁移性、耐久性高的产品。