Patent · US Active

Method of preparing ionic liquids

US7858802B2 · kind B2 · utility

3Cited by

0References

3Claims

0Family size

Assignee

BASF SE

Inventors

Matthias Maase · Speyer, DE
Klemens Massonne · Bad Dürkheim, DE
Laszlo Szarvas · Ludwigshafen, DE

Key dates

Filing date	Jan 26, 2005
Grant date	Dec 28, 2010
Priority date	—
Expiry date	Mar 14, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D233/56
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

In the process for preparing ionic liquids, an ionic liquid is firstly reacted with an alkoxide or with barium hydroxide and is subsequently neutralized with an acid. The ionic liquid contains a phosphonium and/or ammonium cation and an anion selected from the group consisting of halides, arylsulfonates, alkylsulfonates, sulfate, hydroxysulfate, alkylsulfates, hydrogencarbonate, carbonate. triflate and carboxylates. In this process, virtually any anions can be introduced into the ionic liquids.

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