Low viscosity poly-a-olefin lubricating oil and synthesis method thereof

US11352572B2 · kind B2 · utility

Assignee

• PetroChina Company Limited · CN

Inventors

• 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 · Lianyungang, CN
• Xiuhui Wang · Yuhui District, CN
• Han Gao · San Diego, US
• Yuanyuan Cao · Hefei, CN
• Fengrong Wang · Beicheng, 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

Key dates

• Filing date: Oct 24, 2019
• Grant date: Jun 7, 2022
• Expiry date: Feb 9, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/22
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

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 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.