Patent · US Expired

Method for separating a mixture comprising at least an hydrofluoroalkane and hydrogen fluoride, methods for preparing a hydrofluoroalkane and azeotropic compositions

US6521803B1 · kind B1 · utility

5Cited by

5References

22Claims

0Family size

Assignee

SOLVAY (Société Anonyme) · BE

Inventors

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

Key dates

Filing date	Jul 17, 2001
Grant date	Feb 18, 2003
Priority date	—
Expiry date	Jul 17, 2021

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.