Patent · US Expired

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

US4954666A · kind A · utility

17Cited by

6References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

Filing date	Dec 21, 1989
Grant date	Sep 4, 1990
Priority date	—
Expiry date	Dec 21, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C23/06
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.