Preparation of polyfluorobutenes

US5146019A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Dietmar Bielefeldt · Ratingen, DE
• Albrecht Marhold · Leverkusen, DE

Key dates

• Filing date: Jan 21, 1992
• Grant date: Sep 8, 1992
• Expiry date: Jan 21, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/21
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

1,1,1,2,4,4,4-Heptafluoro-2-butene and 2-chloro-1,1,1,4,4,4,-hexafluoro-2-butene are prepared simultaneously by reacting hexachlorobutadiene with hydrogen fluoride with the addition of catalytic amounts of titanium halide, antimony trihalide and/or antoimony pentahalide.