Solid film lubricant, method for producing same, sliding element comprising same and use thereof

US11542408B2 · kind B2 · utility

Assignee

• Federal-Mogul Wiesbaden GmbH · DE

Inventors

• Achim Adam · Nauheim, DE
• Joachim Schluter · Wiesbaden, DE

Key dates

• Filing date: Sep 7, 2018
• Grant date: Jan 3, 2023
• Expiry date: Mar 2, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2240/60
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to an imide polymer-based solid film lubricant, a method for producing same, a sliding element comprising same and the use thereof. According to the method, difunctional or cyclized difunctional compounds and optionally functional fillers are added to a non-imidized or partly imidized polyamide acid prepolymer or an imidized short-chain blocked prepolymer in a solvent or solvent mixture and then, depending on the prepolymer, a polymerization reaction or an imidization reaction and in both cases a crosslinking reaction is carried out. The solid film lubricant comprises an imide polymer as the resin matrix and optionally functional fillers, the molecules of the imide polymer comprising groups (R1) of the difunctional compounds that additionally contribute to the crosslinking.