公开(公告)号：US11352572B2

公开(公告)日：2022-06-07

申请号：US16663128

申请日：2019-10-24

申请人： PETROCHINA COMPANY LIMITED

发明人： Hongling Chu ,  Sihan Wang ,  Kecun Ma ,  Xianming Xu ,  Libo Wang ,  Guizhi Wang ,  Yan Jiang ,  Legang Feng ,  Yulong Wang ,  Enhao Sun ,  Hongliang Huo ,  Tong Liu ,  Yali Wang ,  Xiuhui Wang ,  Han Gao ,  Yuanyuan Cao ,  Fengrong Wang ,  Weihong Guan ,  Ruhai Lin ,  Xuemei Han ,  Yunguang Han ,  Fuling Huang ,  Buwei Yu

IPC分类号： C10G50/02

摘要： The present invention provides a low viscosity poly-α-olefin lubricating oil and a synthesis method thereof. The method comprises: (1) the α-olefin raw material is subjected to dehydration treatment so that the water content in the raw material is ≤10 ppm; (2) a reaction of the dehydration treated α-olefin raw material is carried out in the presence of a complex catalyst and gaseous BF3 to obtain a reaction product, wherein the pressure of the gaseous BF3 is 0.01 to 1 MPa; (3) the reaction product obtained in step (2) is sequentially subjected to flash distillation, gas stripping, centrifugation, and washing treatment to obtain an intermediate product; (4) the intermediate product obtained in step (3) is subjected to distillation under reduced pressure to separate the unreacted α-olefin raw material and α-olefin dimers, and the remaining heavy fractions are subjected to hydrogenation saturation treatment followed by fractionation and cutting-off.