Aromatic-aliphatic azo derivatives particularly as markers...

Details Aromatic-aliphatic azo derivatives particularly as markers... Aromatic-aliphatic azo derivatives particularly as markers...

2011-06-07

2011-06-07

Powers, Fiona T (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

C534SDIG010, C534SDIG005, C044S328000, C208S012000, C252S364000

Reexamination Certificate

active

07956170

ABSTRACT:
Products having the general formula A, particularly useful as non-coloring markers in a process for tagging mineral oils, petroleum derivatives in general and solvents. A method is also described for synthesizing the products by resorting to a classical diazocoupling reaction between a derivative of an aromatic amine and a coupling agent, preferably a functionalized ester. The invention also relates to the use of these tagging and dyeing molecules and mixtures which comprise them. In particular, the mixtures comprise the markers according to the invention and the markers and/or dyes classically used in the petroleum sector.

REFERENCES:
patent: 2453661 (1948-11-01), Glass et al.
patent: 3883568 (1975-05-01), Turner et al.
patent: 4058608 (1977-11-01), Zsolnai et al.
patent: 5100760 (1992-03-01), Sato et al.
patent: 5156653 (1992-10-01), Friswell et al.
patent: 6339145 (2002-01-01), Traverso
patent: 2003-170662 (2003-06-01), None
Machine translation of JP 2003-170662, Jun. 17, 2003.

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