Process for preparing homo- and copolymers of alkyl (meth)acrylates with low residual monomer content

US12252661B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Frank-Olaf Mähling · Mannheim, DE
• Maria Stimeier · Darmstadt, DE
• Thomas Schimmel · Karlsruhe, DE
• Stefan Karl Maier · Ober-Ramstadt, DE
• Sofia Sirak · Frankfurt, DE

Key dates

• Filing date: Dec 17, 2021
• Grant date: Mar 18, 2025
• Expiry date: Mar 19, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2020/071
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method for the preparation of homo- and copolymers of alkyl (meth)acrylates having a low residual monomer content involves preparing a reaction mixture containing monomers, charging the reaction mixture, heating the reaction mixture, adding an additional monomer after initial monomer conversion, and optional further processing of the reaction mixture. The homo- and copolymers of alkyl (meth)acrylates obtained by this method as useful in lubricant applications.