Process for producing alkyl methacrylates and optionally methacrylic acid

US11472762B2 · kind B2 · utility

Assignee

• Röhm GmbH · DE

Inventors

• Steffen Krill · Mühltal, DE
• Andreas Rühling · Darmstadt, DE
• Florian Zschunke · Frankfurt, DE

Key dates

• Filing date: Jun 10, 2020
• Grant date: Oct 18, 2022
• Expiry date: Jun 10, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/39
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A novel process can be used for producing methacrylates such as methacrylic acid and/or alkyl methacrylates, in particular MMA. The process leads to an increased yield and increased efficiency compared to other C4-based production processes, in particular processes starting from isobutylene or tert-butanol as raw material. The process can be operated for longer periods without disruption and with the same or even increased activities and selectivities. The process can also be executed in a manner that is as simple, cost-effective, and environmentally friendly as possible.