Traction fluid with improved low temperature properties

US10927321B2 · kind B2 · utility

Assignee

• VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLC · US

Inventors

• Gefei Wu · Lexington, US
• Rajkumar Rajule · Kalyan-Dombivli, IN
• Ning Ren · Naperville, US
• Jesse Dambacher · Lexington, US
• Frances E. Lockwood · Georgetown, US

Key dates

• Filing date: Jul 10, 2020
• Grant date: Feb 23, 2021
• Expiry date: Jul 10, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2070/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A traction fluid comprising a blend of 2,3-dicyclohexyl-2,3-dimethylbutane (HAD) and 2,3-dicyclohexyl-2,3-dimethylbutane (iso-HAD) is found to have a lower viscosity at low temperatures when compared to a traction fluid having only HAD or only iso-HAD as a base fluid with no compromise to traction coefficient. The traction fluid may comprise additives. The traction fluid usually comprises HAD:isoHAD between about 8:1 to about 1:3. Further, the HAD:iso-HAD traction fluid blend is produced by a method of simultaneous co-production of hydrogenated HAD and hydrogenated iso-HAD from an alpha styrene dimer and an iso-HAD precursor with a yield of about 90% in a method that does not require a purification step.