Process for preparing fluorinated C.sub.4 to C.sub.6 hydrocarbons and novel cyclic fluorinated hydrocarbons and their use as propellant gas and working fluid for heat pump systems

US4902839A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Dietmar Bielefeldt · Ratingen, DE
• Albrecht Marhold · Leverkusen, DE
• Michael Negele · Cologne, DE

Key dates

• Filing date: Oct 13, 1988
• Grant date: Feb 20, 1990
• Expiry date: Oct 13, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C23/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to a process for preparing fluorinated C.sub.4 to C.sub.6 hydrocarbons by catalytically hydrogenating, in the presence of a base, at least partially halogenated olefins. This invention also relates to certain novel cyclic fluorinated C.sub.5 and C.sub.6 hydrocarbons prepared by the process of this invention. This invention further relates to the use of fluorinated C.sub.4 to C.sub.6 hydrocarbons as propellant gas or as working fluid for heat pump systems.