公开(公告)号：US10942161B2

公开(公告)日：2021-03-09

申请号：US16123089

申请日：2018-09-06

Applicant: ExxonMobil Research and Engineering Company

Inventor： Walter D. Vann ,  Kathleen K. Cooper ,  Spyridon Korres ,  Samuel Flores-Torres ,  Bhaskar Prabhakar ,  Erik Herz

IPC: G01N33/28 ,  C10M175/00 ,  G01N21/25 ,  G01N27/60 ,  G01N33/30 ,  C10N30/04 ,  C10N30/00

Abstract: Methods are provided for in-situ detection of varnish and/or deposit precursors in a lubricant in a lubricating environment. An electrostatic accumulator can be used within a lubricating environment to enhance accumulation of varnish and/or deposit precursors on portions of the electrostatic accumulator. The deposits accumulated on the electrostatic accumulator can then be characterized in-situ. The potential difference across portions of the electrostatic accumulator can cause an enhanced rate of deposit accumulation on the electrostatic accumulator, which can facilitate characterization of the tendency of a lubricant to accumulate deposits in the lubricating environment.

公开(公告)号：US20170183595A1

公开(公告)日：2017-06-29

申请号：US15384421

申请日：2016-12-20

Applicant: ExxonMobil Research and Engineering Company

Inventor： Man Kit Ng ,  Halou Oumar-Mahamat ,  Hong Cheng ,  David A. Blain ,  Kathleen K. Cooper ,  James T. Carey ,  Michael R. Douglass ,  Percy R. Kanga ,  Abhimanyu O. Patil ,  Satish Bodige ,  Kyle G. Lewis ,  Mark P. Hagemeister

IPC: C10M105/34 ,  C07C69/26

CPC classification number: C10M105/34 ,  C10M111/02 ,  C10M129/70 ,  C10M129/95 ,  C10M2203/024 ,  C10M2207/281 ,  C10M2207/2815 ,  C10M2207/284 ,  C10M2207/2845 ,  C10M2207/34 ,  C10M2207/345 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/12 ,  C10N2230/14 ,  C10N2230/18 ,  C10N2230/36 ,  C10N2230/54 ,  C10N2230/74 ,  C10N2240/10

Abstract: A lubricating oil base stock including one or more monoesters represented by the formula (I), (II), (III) and (IV) as defined herein. The lubricating oil base stock has a high temperature high shear (HTHS) viscosity of less than about 1.7 cP as determined by ASTM D4683, and a Noack volatility from about 15 to about 90 percent as determined by ASTM D5800. A lubricating oil containing the lubricating oil base stock including one or more monoesters represented by the formula (I), (II), (III) and (IV) as defined herein. A method for improving one or more of thermal and oxidative stability, solubility and dispersancy of polar additives, deposit control and traction control in a lubricating oil by using as the lubricating oil a formulated oil containing the lubricating oil base stock including one or more monoesters represented by the formula (I), (II), (III) and (IV) as defined herein.

公开(公告)号：US10077409B2

公开(公告)日：2018-09-18

申请号：US15384421

申请日：2016-12-20

Applicant: ExxonMobil Research and Engineering Company

Inventor： Man Kit Ng ,  Halou Oumar-Mahamat ,  Hong Cheng ,  David A. Blain ,  Kathleen K. Cooper ,  James T. Carey ,  Michael R. Douglass ,  Percy R. Kanga ,  Abhimanyu O. Patil ,  Satish Bodige ,  Kyle G. Lewis ,  Mark P. Hagemeister

IPC: C10M105/34 ,  C07C69/26

CPC classification number: C10M105/34 ,  C07C69/24 ,  C07C69/26 ,  C07C69/28 ,  C07C69/708 ,  C10M111/02 ,  C10M129/70 ,  C10M129/95 ,  C10M2203/024 ,  C10M2207/281 ,  C10M2207/2815 ,  C10M2207/284 ,  C10M2207/2845 ,  C10M2207/34 ,  C10M2207/345 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2230/12 ,  C10N2230/14 ,  C10N2230/18 ,  C10N2230/36 ,  C10N2230/54 ,  C10N2230/74 ,  C10N2240/10

Abstract: A lubricating oil base stock including one or more monoesters represented by the formula (I), (II), (III) and (IV) as defined herein. The lubricating oil base stock has a high temperature high shear (HTHS) viscosity of less than about 1.7 cP as determined by ASTM D4683, and a Noack volatility from about 15 to about 90 percent as determined by ASTM D5800. A lubricating oil containing the lubricating oil base stock including one or more monoesters represented by the formula (I), (II), (III) and (IV) as defined herein. A method for improving one or more of thermal and oxidative stability, solubility and dispersancy of polar additives, deposit control and traction control in a lubricating oil by using as the lubricating oil a formulated oil containing the lubricating oil base stock including one or more monoesters represented by the formula (I), (II), (III) and (IV) as defined herein.