Production of high viscosity index lube base oils

US8524069B2 · kind B2 · utility

Assignee

• EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

• Eric D. Joseck · Spring, US
• Timothy L. Hilbert · Sewell, US
• Merryl J. Miranda · Falls Church, US
• Jeenok T. Kim · Holmdel, US
• Michael B. Carroll · Mantua, US
• Bryan E. Steuer · Houston, US

Key dates

• Filing date: Feb 20, 2009
• Grant date: Sep 3, 2013
• Expiry date: Oct 29, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2070/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention below shows a preferred method to make high quality base oil at unexpectedly high yields using a combination of hydrotreatment of high waxy feedstocks accompanied by hydroisomerization of the resulting wax to produce an extra high VI lube of greater than 140VI and at least −18 deg C. pour point or less. The preferred combinations of conditions identified below can surprisingly lead to unexpectedly high yields. This allows the use of higher oil content (or lower wax content) feedstocks.