Chemistry: analytical and immunological testing – Nitrogen containing
Patent
1995-06-22
1997-05-06
Warden, Jill
Chemistry: analytical and immunological testing
Nitrogen containing
436 56, 436 60, 436164, 436169, 436178, 534558, 534573, 44328, G01N 3300, G01N 3700
Patent
active
056270771
DESCRIPTION:
BRIEF SUMMARY
BRIEF SUMMARY OF THE INVENTION
The present invention relates to the use of anilines of the formula I ##STR2## where R.sup.1 and R.sup.2 independently of one another are each hydrogen, C.sub.1 -C.sub.18 -alkyl which is unsubstituted or substituted and may be interrupted by 1 to 3 oxygen atoms as ether functional groups or from 1 to 3 C.sub.1 -C.sub.4 -alkylimino groups, or C.sub.3 -C.sub.18 -alkenyl or unsubstituted or substituted phenyl, or R.sup.1 and R.sup.2 together with the nitrogen atom which links them, may be a 5-membered or 6-membered saturated heterocyclic radical which may have a further hetero atom, or R.sup.1 may furthermore be a radical of the formula OL.sup.1 or NL.sup.1 L.sup.2, where L.sup.1 and L.sup.2 independently of one another are each hydrogen, unsubstituted or substituted C.sub.1 -C.sub.18 -alkyl, C.sub.3 -C.sub.18 -alkenyl or unsubstituted or substituted phenyl, unsubstituted or substituted C.sub.1 -C.sub.18 -alkyl, C.sub.2 -C.sub.18 -alkenyl, cyano, nitro, formyl, unsubstituted or substituted C.sub.2 -C.sub.4 -alkanoyl, formylamino, unsubstituted or substituted C.sub.2 -C.sub.4 -alkanoylamino, benzoylamino or a radical of the formula OL.sup.1, CH.sub.2 COOL.sup.1, NL.sup.1 L.sup.1, SL.sup.1 or SO.sub.2 NL.sup.1 L.sup.2, where L.sup.1 and L.sup.2 each have the abovementioned meanings, or together with R.sup.2 are C.sub.2 - or C.sub.3 -alkylene which is unsubstituted or monosubstituted to trisubstituted by methyl or are unsubstituted or phenyl-substituted C.sub.2 - or C.sub.3 -alkenylene, C.sub.2 -C.sub.18 -alkenyl, nitro or a radical of the formula OL.sup.1, NL.sup.1 L.sup.2, COOL.sup.1 or SO.sub.2 L.sup.1 L.sup.2, where L.sup.1 and L.sup.2 each have the abovementioned meanings, and unsubstituted or substituted C.sub.1 -C.sub.18 -alkyl, C.sub.2 -C.sub.18 -alkenyl, unsubstituted or substituted phenyl, nitro, formylamino, unsubstituted or substituted C.sub.2 -C.sub.4 -alkanoylamino, benzoylamino or a radical of the formula OL.sup.1, NL.sup.1 L.sup.2, SO.sub.2 NL.sup.1 L.sup.2, SO.sub.2 L.sup.3, COL.sup.1 or COOL.sup.1, where L.sup.1 and L.sup.2 each have the above-mentioned meanings and L.sup.3 is unsubstituted or substituted C.sub.2 -C.sub.18 -alkyl, C.sub.3 -C.sub.18 -alkenyl or unsubstituted or substituted phenyl, R.sup.7 is hydrogen, detection as the marker, being coupled to a diazonium salt, with formation of an azo dye, mineral oils marked with the abovementioned anilines and to a method for detecting the abovementioned anilines in mineral oils.
BACKGROUND OF THE INVENTION
U.S. Pat. No. 4 209 302 discloses the use of .alpha.- or .beta.-naphthylamine which carries, on the amino group, a propyl radical substituted by a further amino group for marking mineral oils. The marker is detected by reacting the naphthylamine with diazotized 2-chloro-4-nitroaniline. However, it has been found that this marking and detection method is not yet completely satisfactory.
Furthermore, U.S. Pat. No. 2,689,171 describes the marking of mineral oils with aniline or p-toluidine, these products being used as diazo components for the formation of azo dyes; i.e. during their detection they are diazotized and coupled with a coupling component, for example .beta.-naphthol.
OBJECTS OF THE INVENTION
It is an object of the present invention to provide novel agents for marking mineral oils. The novel agents should be easily obtainable and readily soluble in mineral oils. Moreover, they should be capable of being detected in a simple manner. It should also be possible for even very small amounts of marker to be rendered visible by a strong color reaction. Finally, the marker should not be capable of being removed from the marked mineral oil by simple extraction with water.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
We have found that this object is achieved and that the anilines of the formula I which are defined at the outset could be advantageously used for marking mineral oils.
All alkyl and alkenyl radicals occurring in the abovementioned formula I may be both straight-chain and branched.
F
REFERENCES:
patent: 2689171 (1954-09-01), Hager et al.
patent: 4209302 (1980-06-01), Orelup
patent: 5252106 (1993-10-01), Hallisy
patent: 5266227 (1993-11-01), Reichelt et al.
CRC Handbook of Chemistry and Physics, 65th Edition, 1984-1985, pp. D-148, D-149 and D-150.
Dyllick-Brenzinger Rainer
Raulfs Friedrich-Wilhelm
Schlosser Ulrike
BASF - Aktiengesellschaft
Wallenhorst Maureen M.
Warden Jill
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