OIL COMPOSITION AND METHOD OF DETECTING A MARKER IN AN OIL COMPOSITION

WIPO Patent Application WO2003078551

A3

Oil composition comprising a major amount of a natural and/or synthetic base oil and, as a marking substance, a detectable level of one or more compounds of formula (IV), wherein R<1>-R<9> are the same or different and are independently chosen from hydrogen, C1-15 alkyl and other non-conjugated groups; R<10> is chosen from hydrogen and C1-15 alkyl; and R<11> is a conjugated group; and a method for detecting the presence of a marking substance in an oil composition, wherein the oil composition is contacted with a test strip comprising an acidic compound supported thereon, such that said marking substance gives a colour reaction upon contact with the test strip.

LUNT NIGEL EDMUND (GB)
SOUTHBY MARK CLIFT (GB)
WETTON ROBERT JOHN (GB)
WOOLLASTON EMMA JAYNE (GB)

PCT/EP2003/002823

January 15, 2004

March 14, 2003

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SHELL INT RESEARCH (NL)
LUNT NIGEL EDMUND (GB)
SOUTHBY MARK CLIFT (GB)
WETTON ROBERT JOHN (GB)
WOOLLASTON EMMA JAYNE (GB)

C10L1/00; C10L1/22; C10L1/226; C10M133/28; C10M171/00; G01N31/00; G01N33/28; (IPC1-7): C10L1/00; C10L1/22; C10M171/00; C10M133/28; G01N33/28; G01N31/00

FR1495064A	1967-09-15
US5182372A	1993-01-26
EP0311790A1	1989-04-19
EP0887644A1	1998-12-30
EP0679710A1	1995-11-02
US4186243A	1980-01-29

MISHIMA S., MATSUZAKI I., NAKAJIMA T.: "Synthesis of H2SO4/SiO2-mounted Catalysts in Cyclohexane with Pyridine based on a New Acidity Function considering the Effect of Physisorption Sites", J. CHEM. SOC. FARADAY TRANS., vol. 86, no. 20, 1990, pages 3447 - 3453, XP009015654

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