Patent · US Expired

Preparation of ultrapure hydrogen fluoride

US5362469A · kind A · utility

15Cited by

3References

6Claims

0Family size

Assignee

SOLVAY FLUOR und DERIVATE GmbH · DE

Inventors

Ulrich Seseke-Koyro · Vellmar, DE
Andreas Grossmann · Tuttlingen, DE
Werner Rudolph · Hannover, DE

Key dates

Filing date	Oct 28, 1992
Grant date	Nov 8, 1994
Priority date	—
Expiry date	Oct 28, 2012

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01B7/196
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process for preparing ultrapure hydrogen fluoride by contacting impure hydrogen fluoride with elemental fluorine in the presence of metal fluorides. The ultrapure hydrogen fluoride which can be obtained can be used in electronics or optics or for preparing fluorine-containing organic or inorganic compounds or ultrapure hydrofluoric acid.

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