US 6,320,083 B1Granted

Process for making aromatic aldehydes using ionic liquids

AssigneeExxonMobil Chemical Company

InventorRamzi Yanni Saleh

Life of this patent

Estimating the term…

Abstract

A process for the carbonylation of alkyl aromatic compounds uses acidic ionic liquids. In one embodiment, the ionic liquid is intrinsically acidic, having an anion mole fraction of greater than 0.5. The ionic liquids include those comprised of a quaternary nitrogen-containing cation and a metal halide anion. The process provides for good conversion and selectivity in the production of the corresponding aromatic aldehyde compound.

Claims26

Dependent claims

A process, which comprises the step of reacting an alkyl aromatic compound with carbon monoxide in the presence of an acidic ionic liquid to form an alkyl aromatic aldehyde.

Dependencies are inferred from the claim text.

Facts

Application: 09/393,651Filed 10 Sep 1999 · us provisional application
Priority: 10 Sep 1998
Granted: 20 Nov 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

C07C 47/542
Compounds having —CHO groups bound to carbon atoms of six—membered aromatic rings: alkylated benzaldehydes
C07C 7/14858
By treatment giving rise to a chemical modification of at least one compound: with inorganic compounds not provided for before
C07C 45/49
Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds: by reaction with…
C07C 45/82
By change in the physical state, e.g. crystallisation: by distillation

Family

Application60/099,783Us provisional application · filed 10 Sep 1998
US 6,320,083 B1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

patentgrep

Loading patent…

patentgrepSearch patents

Back to results