Patent · US Expired

Preparation of triphenylphosphine

US5527966A · kind A · utility

1Cited by

2References

9Claims

0Family size

Assignee

BASF SE

Inventors

Dieter Hermeling · Haßloch, DE
Peter Bassler · Viernheim, DE
Peter Hammes · Ruppertsberg, DE
Randolf Hugo · Dirmstein, DE
Peter Lechtken · Bischofswerda, DE
Hardo Siegel · Speyer, DE

Key dates

Filing date	Aug 3, 1994
Grant date	Jun 18, 1996
Priority date	—
Expiry date	Aug 3, 2014

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16B2200/506
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Triphenylphosphine (TPP) is prepared by reacting triphenylphosphine dichloride (TPPCl.sub.2) with magnesium, aluminum and/or iron in the presence of an inert solvent, employing a TPPCl.sub.2 solution whose content of phosgene, chlorine, diphosgene, hydrogen chloride, thionyl chloride, sulfuryl chloride, phosphorus trichloride, phosphorus oxychloride and/or aliphatic halogen compounds (active chlorine compounds) totals less than 1000 ppm Cl.

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