Method for the production of propylene oxide

US6756503B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Joaquim Henrique Teles · Waldsee, DE
• Alwin Rehfinger · Mutterstadt, DE
• Peter Bassler · Viernheim, DE
• Anne Wenzel · Graben-Neudorf, DE
• Norbert Rieber · Mannheim, DE
• Peter Rudolf · Ludwigshafen, DE

Key dates

• Filing date: Jan 2, 2003
• Grant date: Jun 29, 2004
• Expiry date: Jan 2, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of propylene oxide in which(i) propene is reacted with hydrogen peroxide in the presence of methanol to give propylene oxide, giving a mixture (Gi) comprising propylene oxide, methanol, water and unreacted hydrogen peroxide,(ii) a mixture (Gii) comprising methanol, water and hydrogen peroxide is separated off from the mixture (Gi), giving a mixture (Ga) comprising propylene oxide, and(iii) water is separated off from the mixture (Gii), giving a mixture (Giii) comprising methanol and methyl formate.