The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2022
Filed:
Oct. 24, 2019
Petrochina Company Limited, Beijing, CN;
Hongling Chu, Beijing, CN;
Sihan Wang, Beijing, CN;
Kecun Ma, Beijing, CN;
Xianming Xu, Beijing, CN;
Libo Wang, Beijing, CN;
Guizhi Wang, Beijing, CN;
Yan Jiang, Beijing, CN;
Legang Feng, Beijing, CN;
Yulong Wang, Beijing, CN;
Enhao Sun, Beijing, CN;
Hongliang Huo, Beijing, CN;
Tong Liu, Beijing, CN;
Yali Wang, Beijing, CN;
Xiuhui Wang, Beijing, CN;
Han Gao, Beijing, CN;
Yuanyuan Cao, Beijing, CN;
Fengrong Wang, Beijing, CN;
Weihong Guan, Beijing, CN;
Ruhai Lin, Beijing, CN;
Xuemei Han, Beijing, CN;
Yunguang Han, Beijing, CN;
Fuling Huang, Beijing, CN;
Buwei Yu, Beijing, CN;
PETROCHINA COMPANY LIMITED, Beijing, CN;
Abstract
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 BFto obtain a reaction product, wherein the pressure of the gaseous BFis 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.