Patent · US Expired

Preparation of 1,1,1,2-tetrafluorodichloroethane

US4922038A · kind A · utility

3Cited by

1References

7Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Carl G. Krespan · Wilmington, US
Bruce E. Smart · Wilmington, US

Key dates

Filing date	Jan 30, 1989
Grant date	May 1, 1990
Priority date	—
Expiry date	Jan 30, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C17/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

This invention provides for a process for the preparation of 1,1,1,2-tetrafluorodichloroethane (FC-114a) by reacting CF.sub.2 .dbd.CFCl in a polar aprotic solvent with a source of fluoride ion selected from at least one alkali metal fluoride and/or at least one tetraalkylammonium fluoride and with a source of chlorine selected from at least one of CCl.sub.4, CCl.sub.3 CCl.sub.3, and CCl.sub.3 CCl.sub.2 CCl.sub.3 at a temperature from about 25.degree. C. to about 150.degree. C.

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