Comb polymers for improving Noack evaporation loss of engine oil formulations

US11015139B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Katrin Schöller · Bad Soden, DE
• Stefan Karl Maier · Ober-Ramstadt, DE
• Sarah Lippert · Darmstadt, DE
• Klaus Schimossek · Bensheim, DE

Key dates

• Filing date: Mar 24, 2020
• Grant date: May 25, 2021
• Expiry date: Mar 24, 2040

Classification

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

Abstract

A comb polymer can be used for reducing a Noack evaporation loss of a lubricant composition, especially of an engine oil composition. Application of the comb polymer to the lubricant composition can bring about the desired reduction. The comb polymer can include specified amounts of macromonomer and alkyl acrylates. Resulting lubricant compositions can include the comb polymer.