Patent · US Expired

Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, processes for the preparation of a hydrofluoroalkane and azeotropic compositions

US7074434B2 · kind B2 · utility

8Cited by

6References

3Claims

0Family size

Assignee

SOLVAY (Société Anonyme) · BE

Inventors

Alain Lambert · Beauvechain, BE
Vincent Wilmet · Louvain-la-Neuve, BE

Key dates

Filing date	Oct 29, 2002
Grant date	Jul 11, 2006
Priority date	—
Expiry date	Oct 29, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C17/38
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, according to which a hydrofluoroalkane/hydrogen fluoride mixture is reacted with at least one chlorinated or chlorofluorinated precursor of the hydrofluoroalkane. Process for the preparation of a hydrofluoroalkane comprising such a separation, in combination with a catalytic reaction stage. Azeotropic compositions.

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