Method of reducing friction and wear between surfaces under a high load condition

US9896640B2 · kind B2 · utility

Assignees

• Dow Corning Corporation · US
• Northwestern University · US

Inventors

• Andreas Stammer · Thiméon, BE
• Manfred Jungk · Geisenheim, DE
• Herbert Stoegbauer · Bad Berka, DE
• Yip-Wah Chung · Wilmette, US
• Tobin J. Marks · Evanston, US
• Qian Wang · Miami, US
• Thomas J. Zolper · Platteville, US

Key dates

• Filing date: Nov 27, 2013
• Grant date: Feb 20, 2018
• Expiry date: Nov 27, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/25
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method of using lubricant compositions to reduce wear between two surfaces exposed to a load condition of at least 1 GPa is provided. The lubricant compositions comprise polysiloxane base oils having alkylaryl or a combination of alkyl and aryl functionality. The polysiloxane base oils may be defined according to the formula:wherein R, R′, and R″ are independently selected, such that R is an alkyl group having between 1-3 carbon atoms; R′ is an alkylaryl group comprising alkyl functionality with 3-12 carbon atoms and aryl functionality with 6 to 12 carbon atoms; R″ is an alkyl group having between 1-3 carbon atoms or an alkylaryl group comprising alkyl functionality with 3-12 carbon atoms and aryl functionality with 6 to 12 carbon atoms; and m and n are integers, such that 8<(m+n)<500.