Bifunctional compound and synthesis method thereof, and applications of bifunctional compound as antioxidant

The invention discloses a bifunctional compound and a synthesis method thereof, and applications of the bifunctional compound as an antioxidant, wherein the bifunctional compound comprises a hinderedphenol unit, a phosphite unit, a trimethylbenzene unit and a straight-chain segment unit. According to the invention, the synergistic effect of the hindered phenol unit and the phosphite unit and thecontent of the effective functional groups in unit mass are adjusted by controlling the length of the straight-chain segment unit, and the trimethylbenzene structure is beneficial to preventing the antioxidant compound from being precipitated out of the polymer; and the compound can be used as an antioxidant of polypropylene or polyethylene. 一种双官能团的化合物、其合成方法及作为抗氧剂的应用，该双官能团的化合物是由受阻酚单元、亚磷酸酯单元、三甲基苯单元和直链链段单元共同构成。通过控制直链链段单元的长度调整受阻酚单元和亚磷酸酯单元的协同作用强弱和单位质量里有效的官能团的含量，三甲基苯结构有利于防止抗氧剂化合物从聚合物中的析出。本发明化合物可作为聚丙烯或聚乙烯的抗氧化剂使用。