US 6,586,636 B2Granted

Aldol condensation

AssigneeImperial Chemical Industries PLC

InventorGordon James Kelly

Life of this patent

Estimating the term…

Abstract

Production of unsaturated aldehydes by the aldol condensation of straight chain aldehydes, e.g. butyraldehyde, by contacting the aldehyde in the vapour phase with a particulate catalyst comprising at least one basic alkali metal compound supported on an inert substrate at a temperature above 175° C.

Claims17

Dependent claims

A process for the production of unsaturated aldehydes by the aldol condensation of straight chain aldehydes by contacting the aldehyde in the vapour phase with a particulate catalyst comprising at least one basic alkali metal compound supported on an inert substrate at a temperature above 175° C.

Dependencies are inferred from the claim text.

Facts

Application: 09/861,529Filed 22 May 2001 · continuation
Priority: GB 982570325 Nov 1998
Published: US 2001/0044558 A122 Nov 2001
Granted: 1 Jul 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

C07C 45/62
By reactions not involving the formation of >C = O groups: by hydrogenation of carbon-to-carbon double or triple bonds
B01J 23/04
Of the alkali- or alkaline earth metals or beryllium: alkali metals
C07C 29/141
Of a —CHO group: with hydrogen or hydrogen-containing gases
C07C 45/74
By reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups: combined with dehydration

Family

PCT/GB99/03534Parent of this continuation · filed 25 Oct 1999
US 2001/0044558 A1Pre-grant publication · published 22 Nov 2001
US 6,586,636 B2This patent

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

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