Exxonmobil Research and Engineering Company

Janet Lee Lane

Liehpao O Farng

Charles Lambert Baker, Jr

Roland Bernard Saeger

Jason Zhisheng Gao

Peter Calcavecchio

David Alan Blain

Medi M Hafez

Atul Gurunath Kanvinde

Joan M Kaminski

John T Rizzo

Gene Sanchez

The invention is a technique for predicting future haze formation in dewaxed, petroleum-derived, lubricant base stocks and, by extension, products made from such base stocks. In general, the technique measures the changes in light scattering caused by the formation and disappearance of wax crystals in a dilute test sample of neat base stock, over the course of a temperature profile. The data obtained is then compared to a previously formulated historical correlation of measurements taken using light scattering data to haze potential. The technique focuses on haze disappearance temperature as a reference point, as opposed to total wax formation. The technique also uses a solvent to accelerate the formation of wax crystals in the test sample. The technique provides a robust early warning system that allows refineries to rapidly and accurately determine the long term haze potential of a base stock production prior to release. The technique can be performed in real time, typically in less than an hour.

Method for predicting haze in lubricant base stocks

A method and system to blend components to form a lubricant having a predetermined characteristic. The method includes determining the characteristic from a model that relates that characteristic as a function of the amount of its components and properties of the components. These predetermined characteristics include KV (kinematic viscosities), CCS (cold cranking simulator), HTHS (high temperature, high shear viscosity), Noack Volatility, MRV (mini-rotary viscometer), Brookfield Viscosity, Soot-Dispersancy, Oxidation, Deposit, Wear, Sulfur, Phosphorus, Base Number, Color, Ash Content, Aniline Point, Acid Number, Viscosity Index, Turbidity, Demulsibility, Foam Stability, Acute Toxicity, Biodegradability, Nitrogen, and Detergency.

Automated intelligent system for lubricant manufacture optimization

Growing community of inventors

Haddonfield, NJ, United States of America

Janet Lee Lane