Patent · US Expired

Sulfonated phosphines, processes for their preparation, and use thereof as constituents of catalyst systems

US5663426A · kind A · utility

11Cited by

2References

18Claims

0Family size

Assignee

Hoechst Aktiengeschaft · DE

Inventors

Guido Albanese · Hersbruck, DE
Rainer Manetsberger · Wielenbach, DE
Wolfgang Anton Herrmann · Freising, DE

Key dates

Filing date	Oct 2, 1995
Grant date	Sep 2, 1997
Priority date	—
Expiry date	Oct 2, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F9/5022
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Sulfonated phosphines of the formula ##STR1## in which R is cyclohexyl or alkyl having 1 to 4 carbon atoms, M is hydrogen, alkyl substituted ammonium, aryl substituted-ammonium, monovalent metal, or the chemical equivalent of a polyvalent metal, x is 1, 2, or 3 and n is 0 or 1. These compounds are obtained by sulfonation of the non-sulfonated parent substances with oleum or an anhydrous mixture of sulfuric acid and orthoboric acid.

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