Manufacture of methacrylic acid and methyl methacrylate

US4118588A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerd Fouquet · Neustadt, DE
• Franz Merger · Bischofswerda, DE
• Rolf Platz
• Karl Baer · Weinheim, DE

Key dates

• Filing date: Mar 25, 1977
• Grant date: Oct 3, 1978
• Expiry date: Mar 25, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/353
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Methacrylic acid and methyl methacrylate are manufactured by reacting, respectively, propionic acid and methyl propionate with dimethoxymethane in the presence of catalysts based on phosphates and/or silicates of magnesium, calcium, aluminum, zirconium, thorium and/or titanium, and in the presence of from 0 to 0.5 mole of water per mole of the acetal.