Process for producing methacrylic acid or methacrylic acid esters

US11866387B2 · kind B2 · utility

Assignee

• Röhm GmbH · DE

Inventors

• Alexander May · Seeheim-Jugenheim, DE
• Steffen Krill · Mühltal, DE
• Marcel Treskow · Darmstadt, DE
• Diego Carambia · José C. Paz, AR
• Gabriel Avella · San Isidro, AR

Key dates

• Filing date: Jul 11, 2019
• Grant date: Jan 9, 2024
• Expiry date: Jul 11, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B82Y40/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for producing methacrylic acid or a methacrylic acid ester including, producing acrolein, reacting the produced acrolein with hydrogen to produce propanal, reacting the propanal with formaldehyde to produce methacrolein, and oxidizing the methacrolein in the presence of an oxygen containing gas and optionally an alcohol, to methacrylic acid or a methacrylic acid ester.