Patent · US Expired

Production of phosphorus pentasulfide of predetermined reactivity

US4248602A · kind A · utility

3Cited by

2References

1Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Hermann Niermann · Lechenich, DE
Gunter Reichert · Bornheim, DE
Hans-Peter Ebert · Lechenich, DE
Friedrich Neumann · Moraga, US

Key dates

Filing date	Aug 15, 1979
Grant date	Feb 3, 1981
Priority date	—
Expiry date	Aug 15, 1999

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01B25/14
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention provides a process wherein a mixture prepared from starting materials comprised of P.sub.2 S.sub.5 of high reactivity and low reactivity, respectively, is converted to phosphorus pentasulfide of predetermined reactivity lying between that of the high reactivity P.sub.2 S.sub.5 and that of the low reactivity P.sub.2 S.sub.5 starting materials. To this end, the starting materials are mixed in quantitative proportions which are selected in accordance with the respective reactivity of the starting materials and the resulting mixture is ground.

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