EP 4100495 A1 20221214 - TRACERS AND METHOD OF MARKING LIQUIDS
Title (en)
TRACERS AND METHOD OF MARKING LIQUIDS
Title (de)
TRACER UND VERFAHREN ZUR MARKIERUNG VON FLÜSSIGKEITEN
Title (fr)
TRACEURS ET PROCÉDÉ DE MARQUAGE DE LIQUIDES
Publication
Application
Priority
- GB 202001450 A 20200203
- GB 2021050003 W 20210104
Abstract (en)
[origin: WO2021156598A1] A method of marking a hydrocarbon fuel, the method comprising adding to said hydrocarbon fuel a tracer compound for marking the hydrocarbon fuel, the tracer compound being a substituted fluorene having a structure of Formula (I): wherein R1 and R2 are the same or different and selected from hydrogen, straight chain, branched or cyclic alkyl groups, phenyl or substituted phenyl groups, benzyl or substituted benzyl groups, or R1 and R2 form a single substituent linked intramolecularly to each other, or R1 and R2 are ether groups excluding acetal groups, wherein R3 and R4 are the same or different and selected from hydrogen, straight chain, branched or cyclic alkyl groups, phenyl or substituted phenyl groups, benzyl or substituted benzyl groups, and wherein at least one of R1, R2, R3, and R4 is not hydrogen.
IPC 8 full level
C10L 1/00 (2006.01); C10L 1/16 (2006.01); C10L 3/00 (2006.01); C10L 3/12 (2006.01)
CPC (source: EP GB US)
C10L 1/003 (2013.01 - EP GB); C10L 1/1608 (2013.01 - EP GB US); C10L 1/1855 (2013.01 - EP); C10L 10/00 (2013.01 - GB US); C10L 2230/16 (2013.01 - EP GB US)
Citation (search report)
See references of WO 2021156598A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021156598 A1 20210812; BR 112022011539 A2 20220830; EP 4100495 A1 20221214; GB 202001450 D0 20200318; GB 202100040 D0 20210217; GB 2592744 A 20210908; GB 2592744 B 20220511; US 2023021024 A1 20230119
DOCDB simple family (application)
GB 2021050003 W 20210104; BR 112022011539 A 20210104; EP 21700058 A 20210104; GB 202001450 A 20200203; GB 202100040 A 20210104; US 202117756579 A 20210104