Exxonmobil Chemical Patents Inc.

Exxonmobil Research and Engineering Company

Exxonmobil Chemicals Patents, Inc.

Cathleen Yung

Frank C Wang

Stephen Harold Brown

Teng Xu

John Scott Buchanan

Luc R M Martens

Ajit Bhaskar Dandekar

David T Ferrughelli

Charles Lambert Baker, Jr

Bradley R Fingland

Frank Cheng-Yu Wang

Nikolaos Soultanidis

Bryan E Hagee

Eugenio Sanchez

Christopher M Evans

Keith G Reed

Stephen Mark Davis

Gretchen L Holtzer

Rugved Prakash Pathare

The invention relates to a utility fluid, such as a fluid containing aromatic and non-aromatic ringed molecules, useful as a diluent when hydroprocessing pyrolysis tar, such as steam cracker tar. The specified utility fluid comprises &#x2267;10.0 wt % aromatic and non-aromatic ring compounds and each of the following: (a) &#x2267;1.0 wt % of 1.0 ring class compounds; (b) &#x2267;5.0 wt % of 1.5 ring class compounds; (c) &#x2267;5.0 wt % of 2.0 ring class compounds; and (d) &#x2266;0.1 wt % of 5.0 ring class compounds. The invention also relates to methods for producing such a utility fluid and to processes for hydroprocessing pyrolysis tar.

Upgrading hydrocarbon pyrolysis products

Provided are high viscosity high quality Group II lube base stocks with improved properties produced by an integrated hydrocracking and dewaxing process. In one form, the Group II lube base stock includes greater than or equal to 90 wt. % saturates, and less than 10 wt. % aromatics, and has an aromatic performance ratio between 1.0 and 5.0. Also provided are lubricant formulations including the high viscosity high quality Group II lube base stock.

High viscosity high quality group II lube base stocks

Growing community of inventors

Phillipsburg, NJ, United States of America

Cathleen Yung