Exxonmobil Research and Engineering Company

Exxonmobile Research and Engineering Company

David W Larkin

William John Murphy

Ian A Cody

Sylvain S Hantzer

Jeenok Theresa Kim

John E Gallagher, Jr

Stuart Leon Soled

Terry Eugene Helton

Gary Brice McVicker

Gary B Mcvicker

Michel A Daage

John E Gallagher

A process for preparing basestocks having superior low temperature properties at high viscosity index (VI). More particularly, a waxy feedstock is contacted with a first dewaxing catalyst having a refined constraint index (CI*) 2.0 or less followed by contacting with a second dewaxing catalyst having a refined constraint index greater than 2.0.

Process for preparing lube basestocks having superior low temperature properties at high VI

A process for producing lube oil basestocks wherein a wax containing lube oil boiling range feedstream is converted into a basestock suitable for use in motor oil applications by contacting it with a hydrodewaxing catalyst containing a medium pore molecular sieve having deposited thereon an active metal oxide and at least one hydrogenation metal selected from the Group VIII and Group VIB metals.

Lube basestocks manufacturing process using improved hydrodewaxing catalysts

A catalyst composition containing a medium pore molecular sieve having deposited thereon an active metal oxide and at least one hydrogenation metal selected from the Group VIII and Group VIB metals for use in hydrodewaxing lube oil boiling range feedstreams.

Molecular sieve containing hydrodewaxing catalysts

A process for preparing high VI lubricating oil basestocks comprising hydrotreating, hydrodewaxing and optionally hydrofinishing. The hydrotreated feedstock is hydrodewaxed using a dewaxing catalyst that has been selectively activated by oxygenate treatment. The hydrodewaxed product may then be hydrofinished.

Process for preparing basestocks having high VI using oxygenated dewaxing catalyst

A process for preparing high VI lubricating oil basestocks comprising hydrotreating, hydrodewaxing and optionally hydrofinishing. The hydrotreating step is under conditions such that the amount of conversion to 343&#xb0; C. minus is less than 5 wt. % of the feedstock and the VI increase is less than 4 VI over the feedstock. Hydrodewaxing uses a low alpha catalyst and hydrofinishing is accomplished with a catalyst based on the M41S family.

Growing community of inventors

Baton Rouge, LA, United States of America

David W Larkin