Preparation of (meth)acrylic acid

US7253310B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Frieder Borgmeier · Mannheim, DE
• Frank Rosowski · Mannheim, DE
• Hans-Guenther Lintz · Karlsruhe, DE
• Ina Grisstede · Mannheim, DE
• Elisabet Bacells Cabre · Karlsruhe, DE

Key dates

• Filing date: Aug 18, 2004
• Grant date: Aug 7, 2007
• Expiry date: Jun 16, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/215
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing (meth)acrylic acid by heterogeneously catalyzed gas phase partial oxidation of a saturated hydrocarbon precursor compound, in which the charging gas mixture contains from 5 to 25% by volume of steam and the molar ratio of molecular oxygen present in the charging gas mixture to saturated hydrocarbon precursor compound present in the charging gas mixture is from 1.5:1 to 2.5:1.