EP1996549A1

EP1996549A1 - Use of aryl- or alkyloxy-substituted phthalocyanines as marking substances for liquids

Info

Publication number: EP1996549A1
Application number: EP07726680A
Authority: EP
Inventors: Thomas Gessner; Sophia Ebert; Rüdiger Sens; Martin KÖNEMANN; Wolfgang Ahlers; Christos Vamvakaris
Original assignee: BASF SE
Current assignee: BASF SE
Priority date: 2006-03-15
Filing date: 2007-03-07
Publication date: 2008-12-03
Also published as: KR20090008228A; AR059897A1; CN101421236A; US20090189086A1; NO20083763L; MX2008011631A; JP2009530427A; PE20071287A1; AU2007224512A1; TW200745131A; CA2646205A1; EA200801986A1; BRPI0708886A2; UA88747C2; ZA200808721B; WO2007104685A1

Abstract

Phthalocyanines of the formula (I) in which the symbols and indices have the meanings given in the description are suitable as marking substances for liquids, in particular mineral oils.

Description

Use of aryl- or alkyloxy-substituted phthalocyanines as markers for liquids

description

The invention relates to the use of specific aryl- or alkyloxy-substituted phthalocyanines as markers for liquids, in particular mineral oils, liquids, in particular mineral oils, which contain at least one such phthalocyanine as a marker, a method for labeling liquids and for the detection of labeled liquids and special aryl or alkyloxy-substituted phthalocyanines.

As marking substances for liquids, in particular mineral oils, phthalocyanine derivatives are proposed in WO 94/02570 A1 in addition to other compounds.

In WO 98/52950 A1 are described as markers for liquids, in particular mineral oils, phthalocyanines which contain as substituents five- or six-membered saturated nitrogen-containing heterocyclic radicals which are bonded via a ring nitrogen atom to the Phthalocyaningrundgerüst.

Furthermore, WO 2005/070935 describes phthalocyanines which carry substituents attached to the phthalocyanine skeleton via methylene groups as marking agents for liquids, in particular mineral oils.

In practice, it is found that the known marking substances, in particular in mineral oils, with the additives typically present therein, often do not have the desired long-term stability. The action of said additives changes the characteristics (e.g., extinction) of the tags, leaving room for improvement.

The object of the invention is to provide phthalocyanines which are distinguished not only by good solubility but also by good long-term stability in the liquids to be marked, in particular mineral oils.

It has been found that certain, aryl- or alkoxy-substituted phthalocyanines have both a good solubility and a very good long-term stability, especially against conventional fuel additives. The invention accordingly provides the use of phthalocyanines of the formula (I) as markers for liquids,

where the symbols and indices in the formula (I) have the following meanings:

M is hydrogen twice, lithium, magnesium, zinc, copper, nickel, VO, TiO, AICI, AlOCOCH ₃ , AlOCOCF ₃ , SiCl ₂ or Si (OH) ₂ twice;

m is 1, 2, 3 or 4;

n is the same or different O, 1, 2, 3 or 4;

r is the same or different 0, 1, 2, 3 or 4;

m + r is 1, 2, 3 or 4;

n + r is O, 1, 2, 3 or 4; R is the same or different

R ¹ is the same or different H, halogen or R ² ;

R ² is identical or different (Ci-C ₈₎ -alkyl, (C ₄ -C ₈₎ cycloalkyl, _{_(C2-Ci2)} alkenyl, _(C6 -Cio) aryl, (C ₇ -C ₂ o) aralkyl or (C ₂ -C ₂₎ -alkynyl, wherein aryl is unsubstituted or substituted with one or more halogen, cyano, nitro, hydroxy, amino, CrC ₂₀ - alkyl which is optionally interrupted by 1 to 4 oxygen atoms in ether function, C 1 -C ₂₀ alkoxy, C 1 -C ₂₀ alkylamino or C 1 -C ₂₀ dialkylamino;

R ³ is identical or different R ¹ or two radicals R ³ or a radical R ¹ and a radical R ³ together form a further ring system;

R ⁴ , R ⁵ , R ⁶ are identical or different H, halogen, CH ₃ or C ₂ H ₅ Y ¹ , Y ² , Y ³ , Y ⁴ , Y ⁵ , Y ⁶ are identical or different (C _r C ₄ ) Alkylene which is unsubstituted or substituted by one or more halogen atoms;

s is 0, 1, 2, 3, 4, 5, or 6; and

t is O, 1, 2, 3. As C- | -C ₈ alkyl, for example, be mentioned methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, 2-methylpentyl, heptyl , Hept-3-yl, octyl, 2-ethylhexyl, isooctyl, nonyl, isononyl, decyl, isodecyl, undecyl, dodecyl, tridecyl, 3,5,5,7-tetramethylnonyl, isotridecyl (the above names isooctyl, isononyl, Isodecyl and isotridecyl are trivial names and are derived from the alcohols obtained by the oxo process - see Ullmanns Encyklopä- the technical chemistry, 4th Edition, Volume 7, pages 215 to 217, and Volume 11, pages 435 and 436), tetradecyl , Pentadecyl, hexadecyl, heptadecyl and octadecyl.

Suitable C ₄ -C ₈ -cycloalkyl radicals are cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl and cyclooctyl.

As C ₆ -C ₀ -Aryle in particular phenyl and naphthyl are mentioned. These are optionally substituted with one or more halogen atoms such as fluorine, chlorine or bromine, Cy to, nitro, hydroxy, amino, -C ₂ -alkyl, which is optionally interrupted by 1 to 4 oxygen atoms in ether function, dC ₂ -alkoxy, dC ₂ o-alkylamino or C ₁ -C ₂ 0-dialkyl-amino substituted.

As the (C ₇ -C ₂ o) aralkyls which lie optionally substituted with one or more Ha- in the aryl radical, cyano, nitro, hydroxy, amino, CrC ₂ O-alkyl, which is optionally interrupted by 1 to 4 oxygen atoms in ether function, C ₁ -C ₂ 0-Al koxy, CrC ₂ o-alkyl-amino or CrC ₂ o-dialkylamino are substituted, in particular benzyl, phenyl-ethyl, 3-phenylpropyl and 4-phenylbutyl mentioned.

_{_(C2-Ci2)} alkenyl which may be mentioned with their various positional isomers, in particular propenyl, butenyl, pentenyl, and hexenyl.

_{_(C2-Ci2)} alkynyl are, in particular propynyl, butynyl, pentynyl, hexynyl, heptynyl, octynyl, nonynyl, decynyl, undecynyl and dodecynyl be mentioned isomers with their various positional.

The halogens to be mentioned in particular fluorine, chlorine, bromine and iodine.

The symbols and indices in the formula (I) preferably have the following meanings:

M is preferably twice hydrogen, twice lithium, magnesium, zinc, copper, nickel, VO, TiO, SiCl ₂ or Si (OH) ₂ .

m is preferably 1 or 2. n is preferably 0, 1 or 2.

is preferably 0, 1 or 2.

R is preferably the same or different

R ¹ is preferably identical or different H or R ² .

R ² is preferably equal to or different from _(d-Ci2) alkyl, (C ₅ -C ₇₎ -cycloalkyl, phenyl, (C ₇ -C ₆₎ aralkyl, wherein the phenyl is unsubstituted or substituted by one or more halogen, ( CrCi ₂ ) alkyl or (CrCi ₂ ) alkoxy substituted.

R ³ is preferably the same or different R ¹ .

s is preferably 0, 1 or 2.

t is preferably 0, 1 or 2.

Preference is given to compounds of the formula (I) in which all symbols and indices have the preferred meanings.

The symbols and indices in the formula (I) particularly preferably have the following meanings: M is particularly preferably twice hydrogen.

m is more preferably 1 or 2.

n is more preferably 1 or 2.

is particularly preferred 0.

R is particularly preferably the same or different

R ¹ is more preferably identical or different to H or R ²

R ² is more preferably identical or different (C 1 -C ₂ -) -alkyl, phenyl, (C ₅ -C ₆ ) -cycloalkyl, where phenyl is unsubstituted or substituted by one to three radicals from the group F, Cl, (C _r C ₆ ) Alkyl and (C _r C ₆ ) alkoxy substituted.

R ³ is more preferably the same or different R ¹ .

s is more preferably 0 or 1.

t is more preferably 0 or 1.

Particular preference is given to compounds of the formula (I) in which all symbols and indices have the particularly preferred meanings.

The symbols and indices in the formula (I) very particularly preferably have the following meanings: m is very particularly preferred 1.

n is very particularly preferred 1.

r is most preferably 0.

M is most preferably H.

R is especially preferred

R ¹ is very particularly preferably identical or different H or R ² .

R ² is most preferably (C 1 -C ₂ ) alkyl or phenyl.

R ³ is very particularly preferably H or (d-Ci ₂₎ -alkyl.

Very particular preference is given to the compounds of the formula (I) in which all the symbols and indices have very particularly preferred meanings.

Further preferred are the compounds of the formula (Ia)

where the symbols have the following meanings:

X ^{1 "7} are identical or different R or R ¹ ,

and

M, R and R ¹ have the meanings given in the formula (I).

Particular preference is given to the compounds of the formula (Iaa)

in each case one of the two groups X ¹ and X ² , X ³ and X ⁴ and X ⁵ and X ^{6 has} the meaning R and the other has the meaning R ¹ and

X ¹ -X ⁶ , R and R ^{1 have} the meanings given above.

Preferred compounds of the formula (Iaa) are those where all four radicals R have the same meaning.

Likewise preferred are compounds in which R ^{1 has} the meaning H. Particularly preferred compounds of the formula (Iaa) are therefore those in which all four radicals R have the same meaning and R ^{1 has} the meaning H.

Particular preference is given to the isomeric compounds of the formulas (Iaa), Ibbb), (Iccc) and (Iddd) and mixtures of these compounds, as may arise, for example, in the synthesis of such compounds,

wherein M and R have the meanings given in the formula (I).

Particular preference is also given to compounds of the formula (I) in which R has one of the following meanings

as well as the compounds listed in the examples.

The compounds of formula (I) are partially known and partly new.

The invention therefore also relates to compounds of the formula (I) in which the symbols and indices have the following meanings:

R is a group

wherein the three above groups must each have at least 10 carbon atoms,

and the remaining symbols and indices have the meanings given in the formula (I).

The compounds of the formula (I) can be prepared by known methods known to the person skilled in the art, as described, for example, in FH Moser and AL Thomas in Phthalocyanine Compounds, ACS Monograph Series, Chapman & Hall, New York, 1963, FH Moser and AL Thomas in The Phthalocyanines, Manufacture and Applications, Vol. 2, CRC Press, Boca Raton, 1983, CC Leznoff in Phthalocyanines, Properties and Application (Eds .: CC Leznoff and ABP Lever), Vol. 1, VCH, New York, Weinheim , Cambridge, 1989, M. Hanack, H. Heckmann and R. Polley in Houben-Weyl, Methods of Organic Chemistry (Ed .: E. Schaumann), 4th Ed., Vol. E 9d, p. 727, Thie , Stuttgart, New York, 1998, US 3 509 146, EP-A 0 373 643, EP 0 658 604, EP-A 0 703 280, EP 0 848 040 and US 6,348,250.

The invention also provides a process for the preparation of the abovementioned novel compounds of the formula (I), where a phthalonitrile of the formula (II)

wherein the symbols and indices have the meanings given above, in the melt with a reducing agent in the presence of a base.

Suitable reducing agents are, for example, hydroquinone, resorcinol, catechol and pyrogallol (1,3,3-trihydroxybenzene) or mixtures thereof, hydroquinone being preferred. Suitable bases are, for example, alkali metal hydroxides, oxides and carbonates, preference being given to NaOH.

The molar ratio of phthalonitrile to reducing agent is generally 0.1 to 10: 1, preferably 0.5 to 2: 1.

In general, 0.1 to 1 equivalents, preferably 0.2 to 0.5 equivalents, of base are used.

The reaction is carried out in the melt, preferably at temperatures of 140 to 250 ° C, more preferably from 150 to 200 ° C.

The reaction time is generally 1 to 24 hours.

The reaction is generally carried out under atmospheric pressure, but may optionally also be carried out at overpressure or underpressure.

The phthalonitriles of the formula (II) are also new and subject of the invention.

They can be prepared by known methods known to the person skilled in the art, as described, for example, in EP-A 1 424 323 and EP-A 0 373 643.

The reaction of the phthalonitriles (II) to give the phthalocyanines of the formula (I) can, if appropriate, also be carried out via the imino-aminoisoindolines (III a / b) as isolated intermediates, according to the cited methods,

where the symbols and indices have the meanings given above. The compounds of the formula (III a / b) are novel and likewise the subject of the invention.

Suitable liquids which can be labeled by means of the phthalocyanines of the formula (I) are, in particular, organic liquids, for example alcohols, such as methanol, ethanol, propanol, isopropanol, butanol, isobutanol, sec-butanol, pentanol, Isopentanol, neopentanol or hexanol, glycols, such as 1, 2-ethylene glycol, 1, 2 or 1, 3-propylene glycol, 1, 2, 2,3 or 1, 4-butylene glycol, di- or triethylene glycol or di- o the tripropylene glycol, ethers, such as methyl tert-butyl ether, 1,2-ethylene glycol mono- or dimethyl ether, 1,2-ethylene glycol mono- or diethyl ether, 3-methoxypropanol, 3-isopropoxypropanol, tetrahydrofuran or dioxane, ketones, such as acetone, Methyl ethyl ketone or diacetone alcohol, esters, such as methyl acetate, ethyl acetate, propyl acetate or butyl acetate, aliphatic or aromatic hydrocarbons, such as pentane, hexane, heptane, octane, isooctane, petroleum ether, toluene, xylene, ethylbenzene, tetralin, decalin, dimethylnaphthalene, white spirit, Brake fluids or oils, such as mineral oils, which comprise gasoline, kerosene, diesel oil and fuel oil according to the invention, natural oils, such as olive oil, soybean oil or sunflower oil, or natural or synthetic engine, hydraulic or G Transmission oils, eg vehicle engine oil or sewing machine oil.

The phthalocyanines of the formula (I) are used to particular advantage for the marking of oils, in particular mineral oils.

The invention furthermore relates to liquids, preferably oils, in particular mineral oils, which contain at least one phthalocyanine of the formula (I) as a marker.

The compounds of the formula (I) to be used as markers are added to the liquids in amounts such that reliable detection is ensured. Usually, the (weight-related) total content of markers in the labeled liquid is about 0.1 to 5000 ppb, preferably 1 to 2000 ppb and particularly preferably 1 to 1000 ppb.

To label the liquids, the compounds are generally added in the form of solutions (stock solutions). In particular, in the case of mineral oils, suitable solvents for preparing these stock solutions are preferably aromatic hydrocarbons, such as toluene, xylene or higher-boiling aromatic mixtures.

In order to avoid too high a viscosity of such stock solutions (and thus poor metering and handling properties), a total concentration of the marking substances of from 0.5 to 50% by weight, based on the total weight of these stock solutions, is generally selected.

If appropriate, the compounds of the formula (I) can also be used in a mixture with other markers / dyes, as described, for example, in the beginning become. The total amount of the marking substances in the liquids is then usually in the range described above.

The invention also provides a process for the marking of liquids, preferably oils, in particular mineral oils, wherein the liquid is a compound of formula (I) is added.

The detection of the compounds of formula (I) in the liquids is carried out by conventional methods. Since these compounds usually have high absorbency and / or fluorescence, in the given case, e.g. a spectroscopic detection.

The compounds of the formula (I) generally have their absorption maximum in the range from 600 to 800 nm and / or fluoresce in the range from 600 to 900 nm and can thus easily be detected with suitable instruments.

The detection can be carried out in a manner known per se, for example by measuring the absorption spectrum of the liquids to be examined.

However, it is also possible to excite the fluorescence of the compounds of the formula (I) present in the liquids, advantageously with a semiconductor laser or a semiconductor diode. It is particularly advantageous to use a semiconductor laser or a semiconductor diode having a wavelength in the spectral range from λ _max -100 nm to λ _max +20 nm. λ _max means the wavelength of the absorption maximum of the marking substance. The wavelength of the maximum emission is in the range of 620 to 900 nm.

The fluorescent light thus generated is advantageously detected with a semiconductor detector, in particular with a silicon photodiode or a germanium photodiode.

Detection is particularly advantageous when there is an interference filter and / or an edge filter (with a short-wave transmission edge in the range from λ _max to λ _max +80 nm) in front of the detector and / or a polarizer.

By means of the above-mentioned compounds, it is very easy to detect labeled liquids, even if the compounds of the formula (I) are only present in a concentration of about 1 ppm (detection by absorption) or about 5 ppb (detection by fluorescence). The invention also provides a process for the identification of liquids, preferably oils, in particular mineral oils, which contain a compound of the formula (I) in an amount sufficient to excite detectable fluorescence upon irradiation with a suitable wavelength,

a) the liquid is irradiated with electromagnetic radiation of a wavelength of 600 to 800 nm, and

b) the excited fluorescence radiation is detected with a device for detecting radiation in the long-wave visible range or in the near infrared range.

The phthalocyanines of the formula (I) can also be used as a component in additive concentrates (hereinafter also referred to as "packagings"), which in addition to a carrier oil and a mixture of various fuel additives generally also include dyes , for invisible fiscal or manufacturer-specific marking, additionally contain markers. These packages enable various mineral oil distribution companies to supply themselves from a "pool" of unadditized mineral oil and only with the aid of their individual packages to supply the mineral oil, e.g. during filling into appropriate transport containers, which give company-specific additives, colouration and marking.

Such packages then contain as components in particular:

a) at least one phthalocyanine of the formula (I) or its preferred embodiments, b) at least one carrier oil, c) at least one additive selected from the group consisting of detergents,

Dispersants and valve seat wear-inhibiting additives, d) and optionally further additives and auxiliaries.

The carrier oils used are usually viscous, high-boiling and, in particular, thermostable liquids. They coat the hot metal surfaces, eg. As the inlet valves, with a thin film of liquid and prevent or delay thereby the formation and deposition of decomposition products on the metal surfaces. As component b) of the fuel and lubricant additive concentrates eligible carrier oils are, for example, mineral carrier oils (base oils), in particular those of the viscosity class "Solvent Neutral (SN) 500 to 2000", synthetic carrier oils based on olefin polymers with M _N = 400 bis 1800, in particular based on polybutene or polyisobutene (hydrogenated or non-hydrogenated), of polyalphaolefins or polyinteralalefins and synthetic carrier oils based on alkoxylated long-chain alcohols or phenols. Adducts of ethylene oxide, propylene oxide and / or butylene oxide to polybutyl or polyisobutene alcohols to be used as carrier oils are described, for example, in document EP 277 345 A1, further polyalkene alcohol polyalkoxylates to be used in WO 00/50543 A1. Other carrier oils to be used are also polyalkene alcohol-polyetheramines, as listed in WO 00/61708.

Of course, mixtures of different carrier oils can also be used provided that they are compatible with one another and with the other components of the packages.

Carburettors and intake systems of internal combustion engines, but also injection systems for fuel metering, are increasingly burdened by impurities caused, for example, by dust particles from the air and unburned hydrocarbon radicals from the combustion chamber.

To reduce or avoid these impurities, additives ("detergents") are added to the fuel to keep valves and carburettors or injection systems clean. Such detergents are generally used in combination with one or more carrier oils. The carrier oils exert an additional "washing function", often assist and promote the detergents in their cleansing and pure-preserving action and can thus contribute to the reduction of the required amount of detergents.

It should also be mentioned here that many of the substances commonly used as carrier oils have an additional effect as detergents and / or dispersants, so that in such a case the proportion of the latter can be reduced. Such carrier oils with detergent / dispersant effect are set out, for example, in the last-mentioned WO document.

In addition, the mode of action of detergents, dispersants and valve seat wear-inhibiting additives is often not clearly distinguishable from one another, which is why these compounds are listed in summary under component c). Usual detergent zien, which are used in the packages application, are listed for example in the documents WO 00/50543 A1 and WO 00/61708 A1 and include:

Polyisobuteneamines, which are obtainable according to EP-A 244 616 by hydroformylation of highly reactive polyisobutene and subsequent reductive amination with ammonia, monoamines or polyamines, such as dimethyleneaminopropylamine, ethylenediamine, diethylenetriamine, triethylenetetramine or tetraethylenepentamine,

Poly (iso) buteneamines, which are obtainable by chlorination of polybutenes or polyisobutenes having double bonds predominantly in the β and γ position and subsequent amination with ammonia, monoamines or the abovementioned polyamines,

Poly (iso) buteneamines obtainable by oxidation of double bonds in poly (iso) butenes with air or ozone to carbonyl or carboxyl compounds and subsequent amination under reducing (hydrogenating) conditions,

Polyisobuteneamines, which are obtainable according to DE-A 196 20 262 from polyisobutene epoxides by reaction with amines and subsequent dehydration and reduction of the amino alcohols,

optionally hydroxyl-containing polyisobuteneamines which are obtainable according to WO-A 97/03946 by reacting polyisobutenes having an average degree of polymerization P = 5 to 100 with nitrogen oxides or mixtures of nitrogen oxides and oxygen and subsequent hydrogenation of these reaction products,

Hydroxyl-containing polyisobuteneamines, which are obtainable according to EP-A 476 485 by reacting polyisobutene epoxides with ammonia, monoamines or the abovementioned polyamines,

Polyetheramines, which by reacting C ₂ -C ₃ o-alkanols, C ₆ -C ₃ o-alkanediols, mono- or di-C ₂ -C ₃ o-alkylamines, dC ₃ o-Alkylcyclohexa-nolen or dC ₃ o- Alkyl phenols with 1 to 30 moles of ethylene oxide and / or propylene oxide and / or butylene oxide per hydroxyl or amino group and subsequent reductive amination with ammonia, monoamines or the above polyamines are obtainable, and

"Polyisobutene Mannich bases", which are obtainable according to EP-A 831 141 by reacting polyisobutene-substituted phenols with aldehydes and monoamines or the abovementioned polyamines. Further detergents and / or valve seat wear-inhibiting additives to be used are listed, for example, in WO 00/47698 A1 and comprise compounds which have at least one hydrophobic hydrocarbon radical having a number-average molecular weight (M _N ) of from 85 to 20,000 and at least one polar Have grouping, and which are selected from:

(i) mono- or polyamino groups having up to 6 nitrogen atoms, at least one nitrogen atom having basic properties,

(ii) nitro groups, optionally in combination with hydroxyl groups,

(iii) hydroxyl groups in combination with mono- or polyamino groups, wherein at least one nitrogen atom has basic properties,

(iv) carboxyl groups or their alkali metal or alkaline earth metal salts,

(v) sulphonic acid groups or their alkali metal or alkaline earth metal salts,

(vi) polyoxy-C ₂ -C ₄ -alkylene groups terminated by hydroxyl groups, mono- or polyamino groups, wherein at least one nitrogen atom has basic properties, or terminated by carbamate groups,

(vii) carboxylic ester groups,

(viii) succinic anhydride-derived moieties having hydroxy and / or amino and / or amido and / or imido groups and

(ix) groups generated by Mannich reaction of phenolic hydroxyl groups with aldehydes and mono- or polyamines.

Mono- or polyamino (i) -containing additives are preferably polyalkene mono- or Polyalkenpolyamine based on polypropene or highly reactive (ie with predominantly terminal double bonds - usually in the ß- and γ-position) or conventional (ie with predominantly central double bonds) Butyls or polyisobutene with M _N = 300 to 5000. Such additives based on highly reactive polyisobutene, which from the polyisobutene, which up to

Contain 20 wt .-% of n-butene units, by hydroformylation and reductive

Amination with ammonia, monoamines or polyamines such as dimethylaminopropylamine, ethylenediamine, diethylenetriamine, triethylenetetramine or tetraethylenepentamine can be prepared, are known in particular from the document EP 244 616 A2. If one starts with the preparation of the additives of polybutene or polyisobutene with predominantly intermediate double bonds (usually in the β and γ position), the preparation route is afforded by chlorination and subsequent amination or by oxidation of the double bond with air or ozone to carbonyl - or carboxyl compound and subsequent amination under reductive (hydrogenating) conditions. For amination, the same amines as described above can be used for the reductive amination of the hydroformylated highly reactive polyisobutene. Corresponding additives based on polypropene are described in particular in document WO 94/24231 A1.

Further preferred monoamino groups (i) containing additives are the hydrogenation of the reaction products of polyisobutenes having an average degree of polymerization P = 5 to 100 with nitrogen oxides or mixtures of nitrogen oxides and oxygen, as described in particular in WO 97/03946 A1.

Further preferred monoamino groups (i) containing additives are the polyisobutene epoxides by reaction with amines and subsequent dehydration and reduction of the amino alcohols obtainable compounds, as described in particular in the document DE 196 20 262 A1.

Nitro groups, optionally in combination with hydroxyl groups, (ii) containing additives are preferably reaction products of polyisobutenes of average degree of polymerization P = 5 to 100 or 10 to 100 with nitrogen oxides or mixtures of nitrogen oxides and oxygen, as described in particular in the publications WO 96/03367 A1 and WO 96/03479 A1. These reaction products typically are mixtures of pure nitropolyisobutanes (e.g., α, β-dinitropolyisobutane) and mixed hydroxynitropolyisobutanes (e.g., α-nitro-β-hydroxy polyisobutane).

Hydroxyl groups in combination with mono- or polyamino groups (iii) containing additives are in particular reaction products of polyisobutene epoxides obtainable from preferably predominantly terminal double bonds having polyisobutene with M _N = 300 to 5000, with ammonia, mono- or polyamines, as described in particular in EP 476 485 A1 are described.

Carboxyl groups or their alkali metal or alkaline earth metal salts (iv) containing additives are preferably copolymers of C ₂ -C ₄₀ olefins with maleic anhydride having a total molecular weight of 500 to 20,000, their carboxyl groups wholly or partly to the alkali metal or alkaline earth metal salts and a remaining Rest of the carboxyl groups are reacted with alcohols or amines. Such additives are in particular from document EP 307 815 A1. Such additives are mainly used to prevent valve seat wear and, as described in document WO 87/01 126 A1, may advantageously be used in combination with conventional detergents, such as poly (iso) butenamines or polyetheramines.

Sulfonic acid groups or their alkali metal or alkaline earth metal salts (v) containing additives are preferably alkali metal or alkaline earth metal salts of a Sulfobern- steinsäurealkylesters, as described in particular in EP 639 632 A1. Such additives serve primarily to prevent valve seat wear and can be used to advantage in combination with conventional detergents such as poly (iso) buteneamines or polyetheramines.

Polyoxy-C ₂ -C ₄ -alkylene (vi) additives are preferably polyethers or polyetheramines which are obtainable by reaction of kanolen C ₂ -C _6O -AI, C ₆ -C ₃₀ - alkanediols, mono- or di-C ₂ -C alkylamines _30, CrC _{30--Alkylcyclo} hexanols d- or C ₃₀ alkyl phenols having 1 to 30 mol ethylene oxide and / or propylene oxide and / or butylene oxide per hydroxyl group or amino group and, in the case of the polyetheramines, by subsequent reductive amination with ammonia, monoamines or polyamines. Such products are described in particular in EP 310 875 A1, EP 356 725 A1, EP 700 985 A1 and US Pat. No. 4,877,416. In the case of polyethers, such products also meet carrier oil properties. Typical examples of these are tridecanol or Isotridecanolbutoxylate, Isononylphenolbutoxylate and Polyisobutenolbutoxylate and propoxylates and the corresponding reaction products with ammonia.

Carboxyl ester groups (vii) containing additives are preferably esters of mono-, di- or tricarboxylic acids with long-chain alkanols or polyols, especially those having a minimum viscosity of 2 mm ² / s at 100 ⁰ C, as described in particular in DE 38 38 918 A1 are described. As mono-, di- or tricarboxylic acids, it is possible to use aliphatic or aromatic acids; as ester alcohols or polyols, especially long-chain representatives having, for example, 6 to 24 carbon atoms are suitable. Typical representatives of the esters are adipates, phthalates, isophthalates, terephthalates and trimellitates of iso-octanol, iso-nonanol, iso-decanol and of isotridecanol. Succinic anhydride-derived groupings containing hydroxyl and / or amino and / or amido and / or imido groups (viii) additives are preferably corresponding derivatives of polyisobutenyl succinic anhydride obtained by reacting conventional or highly reactive polyisobutene with M _n = 300 to 5000 with maleic anhydride are obtainable by thermal means or via the chlorinated polyisobutene. Of particular interest here are derivatives with aliphatic polyamines such as ethylenediamine, diethylenetriamine, triethylenetetramine or tetraethylene pentamine. Such Otto fuel additives are described in particular in the document US 4,849,572.

By Mannich reaction of phenolic hydroxyl groups with aldehydes and mono- or polyamines generated groupings (ix) containing additives are preferably reaction products of polyisobutene-substituted phenols with formaldehyde and mono- or polyamines such as ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine or dimethylaminopropylamine. The polyisobutenyl-substituted phenols can be derived from conventional or highly reactive polyisobutene having M _N = 300 to 5,000. Such "polyisobutene-Mannich bases" are described in particular in document EP 831 141 A1.

For a more detailed definition of the individual listed additives, reference is made here expressly to the disclosures of the abovementioned publications of the prior art.

Dispersants as component c) are, for example, imides, amides, esters and ammonium and alkali metal salts of polyisobutene succinic anhydrides. These compounds find particular use in lubricating oils, but sometimes also as detergents in fuel compositions.

Further additives and auxiliaries which may optionally be present as component d) of the packagings are

organic solvents, for example alcohols, such as methanol, ethanol, propanol, isopropanol, butanol, isobutanol, sec-butanol, pentanol, isopentanol, neopentanol or hexanol, for example glycols, such as 1, 2-ethylene glycol, 1, 2 or 1, 3-propylene glycol, 1, 2, 2,3 or 1, 4-butylene glycol, di- or triethylene glycol or di- or tripropylene glycol, for example ethers, such as methyl tert-butyl ether, 1, 2-ethylene glycol mono- or dimethyl ether, 1,2-ethylene glycol mono- or diethyl ether, 3-methoxypropanol, 3-isopropoxypropanol, tetrahydrofuran or dioxane, eg ketones, such as acetone, methyl ethyl ketone or diacetone alcohol, for example esters, such as methyl acetate, ethyl acetate, propyl acetate or butyl acetate , for example lactams, such as N-methylpyrrolidinone (NMP), for example aliphatic or aromatic hydrocarbons and mixtures thereof, such as pentane, hexane, heptane, octane, isooctane, petroleum ether, toluene, xylene, ethylbenzene, tetralin, decalin, dimethylnaphthalene or white spirit and eg mineral oil, such as benzene n, kerosene, diesel oil or fuel oil, Corrosion inhibitors, for example based on film-forming ammonium salts of organic carboxylic acids or of heterocyclic aromatics in non-ferrous metal corrosion protection,

Antioxidants or stabilizers, for example based on amines such as p-phenylenediamine, dicyclohexylamine or derivatives thereof or of phenols such as 2,4-di-tert-butylphenol or 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid,

demulsifiers,

Antistatic agents,

Metallocenes such as ferrocene or methylcyclopentadienyl manganese tricarbonyl,

Lubricity additives such as certain fatty acids, alkenylsuccinic acid esters, bis (hydroxyalkyl) fatty amines, hydroxyacetamides or castor oil,

Amines for lowering the pH of the fuel,

other, of phthalocyanines of the formula (I) and their preferred embodiments, different markers and

Dyes.

The concentration of component a), i. the at least one phthalocyanine of the formula (I) or its preferred embodiments, in the packages is usually chosen in such a height that after addition of the package to the mineral oil, the desired concentration of marker (s) is contained therein. Typical concentrations of the marking substances in the mineral oil are approximately in the range of 0.01 to a few 10 ppm by weight.

Component b), ie the at least one carrier oil, is usually in the packages in a concentration of 1 to 50, in particular 5 to 30 wt .-%, and component c), ie the at least one detergent and / or the at least one dispersant, usually in a concentration of 25 to 90% by weight, in particular 30 to 80% by weight, in each case based on the total amount of components a) to c) and optionally d), where the sum of the individual concentrations of the components a) to c) and optionally d) to 100 wt .-% complements. If, as component d), corrosion inhibitors, antioxidants or stabilizers, demulsifiers, antistatic agents, metallocenes, lubricity improvers and amines for lowering the pH of the fuel are contained in the packages, their total concentration usually amounts to not more than 10% by weight. -%, based on the total amount of the package (ie the total amount of components a) to c) and d)), wherein the concentration of the corrosion inhibitors and demulsifiers usually in the range of about 0.01 to 0.5 wt .-% of Total amount of the package is.

If, as component d), additional (i.e., not already introduced with the other components) organic solvents are contained in the packages, their concentration in the sum usually amounts to not more than 20 wt .-%, based on the total amount of the package. These solvents are usually derived from solutions of the markers and / or dyes which are added to the packages in the interests of more accurate metering, in place of the pure tags and / or dye.

If, as component d), other labeling substances other than phthalocyanines of the formula (I) or their preferred embodiments are contained in the packages, their concentration is again measured at the content which they should have after addition of the packages in the mineral oil. The same applies to component a).

If dyes are present in the packages according to the invention as component d), their concentration is usually about between 0.1 to 5 wt .-%, based on the total amount of the package.

The invention is explained in more detail by the examples.

Example 1: 1 (4), 8 (11), 15 (18), 22 (25) tetrakis (2,6-diisopropylphenoxy) phthalocyanine

a) 3- (2,6-diisopropylphenoxy) -phthalodinitrile

To a solution of 8.66 g (50.0 mmol) of 3-nitrophthalodinitrile in 50 ml of N-methyl-2-pyrrolidinone was added 16.92 g (50.0 mmol) of cesium carbonate with stirring. After the addition of 8.91 g (50.0 mmol) of 2,6-diisopropylphenol, the reaction mixture was heated to 40 ° C and held at this temperature for 24 hours. After cooling to room temperature, the reaction mixture was precipitated to 500 g of ice water. The precipitate was filtered off with suction, washed with water and dried in a vacuum drying oven at 60.degree. The crude product (15.8 g) was dissolved in 200 ml of methanol, stirred for 30 minutes at room temperature and then precipitated with 800 ml of water. The precipitate was filtered off, washed with 100 ml of water-methanol mixture (10: 1) and dried at 60 ° C in a vacuum oven. There were obtained 1.17 g of solid. (A preparation procedure is also found in M. Brewis et al., Chem. Eur. J. 1998, 4, 1633-1640.)

b) 1 (4), 8 (11), 15 (18), 22 (25) tetrakis (2,6-diisopropylphenoxy) phthalocyanine

A mixture of 10.0 g (32.9 mmol) of 3- (2,6-diisopropylphenoxy) phthalodinitrile, 3.63 g (33.0 mmol) of hydroquinone and 0.33 g (8.3 mmol) of granular sodium hydroxide was heated to 175 ° C. with stirring and heated for 4 hours Temperature, the melt solidified after 1 hour. After cooling to room temperature, the solid was crushed and stirred with 200 ml of water and 10 ml of methanol. The solid was filtered off with suction, stirred in 200 ml of methanol, filtered off with suction and dried at 75 ° C. in a vacuum oven. The crude product was dissolved in toluene-heptane (2: 1) and filtered through silica gel. The solution was concentrated to dryness and freed of solvent residues in a vacuum drying oven at 130.degree. 3.01 g (30% of theory) of green microcrystals having a melting point of 229-231 ° C. (literature> 300 ° C.) were obtained. (A production has been described by M. Brewis et al, Chem Eur J. 1998, 4, 1633 - described 1640th...) UV / Vis: λ _max (log ε) = 726 (5.25), 692 (5.19), 660 (4.64), 626 (4.52), 354 (4.62), 318 nm

(4.69) in toluene λ _max (log ε) = 726 (5.20), 694 (5.14), 662 (4.63), 628 (4.51), 352 (4.66), 316 nm

(4.76) in methylene chloride

Example 2: 1 (4), 8 (11), 15 (18), 22 (25) tetrakis (2,4-di-tert-pentylphenoxy) phthalocyanine

a) 3- (2,4-di-tert-pentylphenoxy) -phthalodinitrile

To a solution of 17.32 g (100 mmol) of 3-nitrophthalodinitrile in 100 ml of N-methyl-2-pyrrolidinone was added 33.84 g (100 mmol) of cesium carbonate with stirring. After the addition of 23.44 g (100 mmol) of 2,4-di-tert-pentylphenol, the reaction mixture was heated to 40 ° C. and kept at this temperature for 24 hours. After cooling to room temperature, the reaction mixture was precipitated onto 1000 g of ice water. The precipitate was filtered off with suction, washed with water and dried in vacuo. drying oven dried at 100 ° C. The crude product (31.26 g) was recrystallized in 300 ml of methanol. The solid was filtered off, washed with methanol and dried at 100 ° C in a vacuum oven. 23.75 g (66% of theory) of analytically pure microcrystals having a melting point of 143-144 ° C. (literature 133-135 ° C.) were obtained. (The preparation has also been described by G. Changsheng et al., Chinese J. Chem. Phys. 16 (2003) 293-298.)

b) 1 (4), 8 (11), 15 (18), 22 (25) tetrakis (2,4-di-tert-pentylphenoxy) phthalocyanine

A mixture of 5.41 g (15.0 mmol) of 3- (2,4-di-tert-pentylphenoxy) phthalodinitrile, 1.65 g (15.0 mmol) of hydroquinone and 0.15 g (3.6 mmol) of granulated sodium hydroxide was heated to 175 ° C. with stirring and held at this temperature for 4 hours, with the melt solidifying after 1 hour. After cooling to room temperature, the solid was crushed, dissolved in toluene-heptane (2: 1) and filtered through silica gel. The solution was concentrated to dryness and freed from solvent residues in a vacuum oven at 130 ° C. 1.47 g (27% of theory) of green analytically pure microcrystals having a melting point of 230 ° C. (literature 230-232 ° C.) were obtained. (The preparation was also described by G. Changsheng et al., Chinese J. Chem. Phys. 16 (2003) 293-298.) UV / Vis: λ _max (log ε) = 728 (5.26), 694 (5.21) , 662 (4.66), 628 (4.55), 326 nm (4.74) in

Toluene λ _max (log ε) = 728 (5.21), 698 (5.16), 664 (4.64), 632 (4.54), 326 nm (4.79) in methylene chloride

Example 3: 1 (4), 8 (11), 15 (18), 22 (25) tetrakis (2,4,6-trimethylphenoxy) phthalocyanine a) 3- (2,4,6-trimethylphenoxy) -phthalodinitrile

To a solution of 8.66 g (50.0 mmol) of 3-nitrophthalodinitrile in 50 ml of N-methyl-2-pyrrolidinone was added 16.92 g (50.0 mmol) of cesium carbonate with stirring. After the addition of 6.51 g (50.0 mmol) of 2,4,6-trimethylphenol, the reaction mixture was heated to 40 ° C and held at this temperature for 24 hours. After cooling to room temperature, the reaction mixture was slowly added with 100 ml of ice water. The resulting precipitate was filtered off, washed with 100 ml of water and dried in a vacuum oven at 60 ° C. The crude product (12.03 g) was recrystallized in 200 ml of methanol. There were 12.6 g (45% of theory..) Of analytically pure colorless microcrystals having a melting point of 151 - 153 ⁰ C th conservation.

Ci ₇ H ₁₄ N ₂ O Ber. C 77.84 H 5.38 N 10.68 O 6.10

M = 262.31 Gef. C 77.7 H 5.5 N 10.5 0 6.1

UV / Vis: λ _max (log ε) = 316 (3.77), 308 (S) nm in acetonitrile

b) 1 (4), 8 (11), 15 (18), 22 (25) tetrakis (2,4,6-trimethylphenoxy) phthalocyanine

A mixture of 4.00 g (15.0 mmol) of 3- (2,4,6-trimethylphenoxy) -phthalodinitrile, 1.65 g (15.0 mmol) of hydroquinone and 0.16 g (4.0 mmol) of granulated sodium hydroxide was heated with stirring to 175 ° C and 4 hours held at this temperature, the melt solidified after 1 hour. After cooling to room temperature, the solid (6.26 g) was crushed, dissolved in toluene-heptane (2: 1) and filtered through silica gel. The solution was concentrated to dryness and freed from solvent residues in a vacuum oven at 130 ° C. 1.07 g (27% of theory) of green microcrystals having a melting point of> 370 ° C. were obtained. C ₆₈ H ₅₈ N ₈ O ₄ Ber. C 77.69 H 5.56 N 10.66 M = 1051.27 Gef. C 77.6 H 5.6 N 10.6

UV / Vis: λ _max (log ε) = 724 (5.28), 690 (5.21), 658 (4.66) 624 (4.54), 354 (4.66), 320 nm (4.72) in toluene

Example 4: 1 (4), 8 (11), 15 (18), 22 (25) tetrakis (2,6-diphenylphenoxy) phthalocyanine

a) 3- (2,6-diphenylphenoxy) -phthalodinitril (3 - ([1, 1 ^'; ^3', 1 ^"] terphenyl-2 ^'yloxy) -phthalo- dinitrile)

To a solution of 8.66 g (50.0 mmol) of 3-nitrophthalodinitrile in 50 ml of N-methyl-2-pyrrolidinone was added 16.92 g (50.0 mmol) of cesium carbonate with stirring. After the addition of 12.32 g (50.0 mmol) of 2,6-diphenylphenol, the reaction mixture was heated to 40 ° C. and kept at this temperature for 24 hours. After cooling to room temperature, the reaction mixture was precipitated to 500 g of ice water. The viscous precipitate was filtered off with suction and stirred in 150 ml of ethanol. The finely crystalline precipitate was filtered off, washed with ethanol and dried in a vacuum oven at 50 ° C. 1.43 g (7.7% of theory) of ocher solid having a melting point of 129-130 ° C. (literature 128-129 ° C.) were obtained. (A preparation procedure is also found in M. Brewis et al., Chem. Eur. J. 1998, 4, 1633-1640.) b) 1 (4), 8 (11), 15 (18), 22 (25) tetrakis (2,6-diphenylphenoxy) phthalocyanine

A mixture of 1.30 g (3.49 mmol) of 3- (2,6-diphenylphenoxy) -phthalodinitrile, 0.38 g (3.5 mmol) of hydroquinone and 0.1 1 g (2.8 mmol) of granulated sodium hydroxide was heated with stirring to 175 ° C and 4 hours at maintained this temperature, the melt solidified after 1 hour. After cooling to room temperature, the solid was crushed. The crude product (1.75 g) was dissolved in toluene-heptane (2: 1) and filtered through silica gel. The solution was concentrated to dryness and freed of solvent residues at 130 ° C. in a vacuum drying oven. 0.49 g (38% of theory) of analytically pure green microcrystals having a melting point of 239-241 ° C. (literature> 300 ° C.) were obtained. (A preparation has already been described by M. Brewis et al., Chem. Eur. J. 1998, 4, 1633-1640.) UV / Vis: λ _max (log ε) = 726 (5.25), 692 (5.18), 660 (4.62), 626 (4.50), 354 (4.60), 320 nm

(4.66) in toluene λ _max (log ε) = 726 (5.21), 694 (5.15), 660 (4.62), 628 (4.50), 352 (4.64), 318 nm (4.72) in methylene chloride

Example s: 1 (4), 8 (11), 15 (18), 22 (25) tetrakis (4-tert-butyl-2,6-diphenylphenoxy) phthalocyanine

a) 3- (4-tert-Butyl-2,6-diphenylphenoxy) -phthalodinitrile (3- (5 ^' -tert-butyl-1, 1 ^' , 3 ^' , 1 ^" ) -terphenyl-2 ^' - yloxy) -phthalodinitril)

To a solution of 5.77 g (33.3 mmol) of 3-nitrophthalodinitrile in 50 ml of N-methyl-2-pyrrolidinone was added 16.92 g (50.0 mmol) of cesium carbonate with stirring. After the addition of 15.12 g (50.0 mmol) of 4-tert-butyl-2,6-diphenylphenol (prepared according to H. Yang and AS Hay, Synthesis 1992, 467-472), the reaction mixture was heated to 40 ° C and 6 hours stirred at this temperature. After cooling to room temperature, the reaction mixture was precipitated to 200 ml of water. The suspension was stirred overnight and then filtered. The residue was suspended in 300 ml of ethanol and stirred at room temperature for 1 h. The solid was filtered off, washed with ethanol and dried in a vacuum oven at 75 ° C. 10.66 g (75% of theory) of beige-colored microcrystals were obtained. A sample recrystallized from ethanol (colorless) was analytically pure and melted at 189-191.5 ° C. C ₃₀ H ₂₄ N ₂ O Ber. C 84.08 H 5.65 N 6.54 O 3.73 M = 428.54 Gef. C 83.8 H 5.7 N 6.3 0 3.9

UV / Vis: λ _max (log ε) = 318 nm (3.71) in acetonitrile

b) 1 (4), 8 (11), 15 (18), 22 (25) tetrakis (4-tert-butyl-2,6-diphenylphenoxy) phthalocyanine

A mixture of 10.0 g (23.3 mmol) of 3- (4-tert-butyl-2,6-diphenylphenoxy) phthalodinitrile, 2.57 g (23.3 mmol) of hydroquinone and 0.22 g (5.5 mmol) of granulated sodium hydroxide was heated to 175 ° with stirring C heated and held for 4 hours at this temperature, the melt solidified after 1 hour. After cooling to room temperature, the solid was crushed. The crude product was stirred in 200 ml of water, filtered off with suction and dried in a vacuum oven at 100 ° C. Subsequently, the solid was dissolved in toluene and purified by chromatography on silica gel. 1.86 g (19% of theory) of green microcrystals having a melting point of 243-245 ° C. were obtained.

Ci ₂₀ H ₉₈ N ₈ O ₄ Ber. C 83.99 H 5.76 N 6.53 O 3.73

M = 1716.17 Gef. C 83.9 H 6.2 N 6.7 0 3.6

UV / Vis: λ _max (log ε) = 726 (5.29), 694 (5.23), 660 (4.66) 626 (4.54), 326 nm (4.70) in toluene

Example 6: 2 (3), 9 (10), 16 (17), 23 (24) tetrakis (2,6-diisopropylphenoxy) phthalocyanine

a) 4- (2,6-diisopropylphenoxy) -phthalodinitrile

To a solution of 8.65 g (50.0 mmol) of 4-nitrophthalonitrile in 50 ml of N-methyl-2-pyrrolidinone was added 16.92 g (50.0 mmol) of cesium carbonate with stirring. After the addition of 8.91 g (50.0 mmol) of 2,6-diisopropylphenol, the reaction mixture was heated to 40 ° C. and kept at this temperature for 24 hours. After cooling to room temperature, the reaction mixture was precipitated to 500 g of ice water. The precipitate was filtered off, washed with water and dried in a vacuum oven at 100 ° C. The crude product (6.53 g) was dissolved in 100 ml of hot ethanol. The hot solution was filtered and precipitated after cooling to room temperature with 300 ml of ice water. The precipitate was filtered off, washed with water and dried at 80 ° C in a vacuum oven. There were obtained 3.81 g (25% of theory) of solid having a melting point of 1 14 - 1 16 ⁰ C (literature 1 15 - 116 ° C). (A preparation procedure is also found in M. Brewis et al., Chem. Eur. J. 1998, 4, 1633-1640.) b) 2 (3), 9 (10), 16 (17), 23 (24) tetrakis (2,6-diisopropylphenoxy) phthalocyanine

A mixture of 3.04 g (10.0 mmol) of 4- (2,6-diisopropylphenoxy) phthalodinitrile, 1.10 g (10.0 mmol) of hydroquinone and 0.11 g (2.8 mmol) of granulated sodium hydroxide was heated to 175 ° C. with stirring and stirred for 4 hours Temperature, the melt solidified after 1 hour. After cooling to room temperature, the solid was crushed, dissolved in toluene-heptane (2: 1) and filtered through silica gel. The solution was concentrated to dryness and freed from solvent residues in a vacuum oven at 130 ° C. 0.13 g (4% of theory) of green microcrystals having a melting point of 196-198 ° C. (literature> 300 ° C.) were obtained. (A production has been described by M. Brewis et al, Chem Eur J. 1998, 4, 1633 - described 1640th...) UV / Vis: λ _max (log ε) = 705 (5.23), 668 (5.14), 640 (4.67), 606 (4.49), 350 (4.82), 284 (4.63) nm in toluene

Example 7: 1 (4), 8 (11), 15 (18), 22 (25) tetra (1-adamantanoxy) phthalocyanine

a) 3- (1-adamantanoxy) -phthalodinitrile

8.66 g (50.0 mmol) of 3-nitrophthalonitrile were dissolved in 50 ml of anhydrous N-methyl-2-pyrrolidinone (NMP) under nitrogen. Into the solution cooled to 0-5 ° C was added dropwise a solution of sodium adamantanolate in anhydrous NMP prepared from 7.61 g (50.0 mmol) 1-adamantanol and 2.20 g (55.0 mmol) sodium hydride. After two hours of stirring at 0 - 5 ° C, the reaction solution was allowed to warm to room temperature and stirred for 18 hours. Then, 150 ml of water was added dropwise to form a precipitate. This was filtered off, washed with water and dried at 50 ° C in a vacuum oven. The crude product (8.08 g) was recrystallized from 80 ml of ethanol. There was obtained 5.55 g of solid.

b) 1 (4), 8 (11), 15 (18), 22 (25) tetra (1-adamantanoxy) phthalocyanine

A mixture of 4.18 g (15.0 mmol) of 3- (1-adamantanoxy) -phthalodinitrile, 1.65 g (15.0 mmol) of hydroquinone and 0.15 g (3.6 mmol) of granulated sodium hydroxide was heated with stirring to 175 ° C and held at this temperature for 4 hours , wherein the melt solidified after 1 hour. After cooling to room temperature, the solid was crushed, dissolved in toluene-ethyl acetate (15: 2) and filtered through silica gel. The solution was concentrated to dryness and freed from solvent residues in a vacuum oven at 130 ° C. 0.68 g (16% of theory) of green microcrystals having a melting point of 124-125 ° C. were obtained. UV / Vis: λ _max (log ε) = 718 (5.08), 684 (5:01), 652 (4:49), 620 (4.34), 356 (4:58) 310 nm (4.50) in toluene

Example 8 (Comparative Example): 1 (4), 8 (11), 15 (18), 22 (25) -tetra (4-nonylphenoxy) phthalocyanine

a) 3- (4-nonylphenoxy) -phthalodinitrile

124.4 g (900 mmol) of potassium carbonate were added with stirring to a solution of 155.13 g (600 mmol) of 3-nitrophthalodinitrile in 500 ml of dimethylformamide. After the addition of 132.1 g (600 mmol) of 4-nonylphenol, the reaction mixture was heated to 35 ° C. and kept at this temperature for 6 hours. Subsequently, the reaction mixture was stirred overnight at room temperature and then precipitated to 6 l of water. The resulting precipitate was filtered off, washed with 6 l of water and dried in a vacuum oven at 40 ° C. The crude product (194.3 g) was recrystallized in 1 l of n-hexane and then in 200 ml of methanol in the presence of activated charcoal. 41.0 g (20% of theory) of colorless microcrystals having a melting point of 74 ° -81 ° C. were obtained.

b) 1 (4), 8 (11), 15 (18), 22 (25) tetra (4-nonylphenoxy) phthalocyanine

A mixture of 34.6 g (100 mmol) of 3- (4-nonylphenoxy) -phthalodinitrile, 1.1 g (100 mmol) of hydroquinone and 1.00 g (25.0 mmol) of granulated sodium hydroxide was heated with stirring to 175 ° C and 4 hours at this temperature held. After cooling to room temperature, the melt solidified. The solid (36.0 g) was finely ground, slurried with 200 ml of water and 10 ml of ethanol, filtered off, washed with 1 l of water and dried at 60 ° C in a vacuum oven. The crude product (34.6 g) was dissolved in 210 ml of toluene. The solution was filtered and added dropwise to 700 ml of methanol. After one hour of stirring, the solid was filtered off, washed with 700 ml of methanol, then with water and dried at 60 ° C in a vacuum oven (19.4 g). The solid was recrystallized in 194 ml of butyl glycol. The solid was filtered off, washed with 40 ml of butyl glycol, then with 390 ml of methanol, sucked dry and dried in a vacuum oven at 60 ° C. 15.4 g (44% of theory) of analytically pure green microcrystals having a melting point of 168.5 to 170 ° C. were obtained.

C ₉₂ H ₁₀₆ N ₈ O ₄ Ber. C 79.62 H 7.70 N 8.07

M = 1387.90 Gef. C 79.5 H 7.6 N 8.2

UV / Vis: λ _max (log ε) = 718 (5.20), 684 (5.14), 654 (4.66), 620 (4:52), 330 nm in toluene

Example 9: Storage stability test in the presence of mineral oil additives Approximately 20 mg of the respective substance were dissolved in 25 ml of Shellsol naphtha. Any insoluble components were separated by filtration (pleated filter). The concentration of the dissolved substance was chosen so that the extinctions of the longest wavelength absorption bands to be measured were between 0.8 and 1.5. 5 ml of the filtrate were made up to 10 ml with a commercial polyisobutene (PIBA) -based additive, mixed and stored in an airtight ampule at 40 ° C. After the storage times listed in the table below, samples were taken from the ampoules and measured in 1 mm cuvettes. In order to obtain a better comparability of the different samples, the table shows 1 standardized extinctions (extinction equal to 1 at the beginning of the storage period).

Claims

claims

1. Use of phthalocyanines of the formula (I) as markers for liquids,

where the symbols and indices in the formula (I) have the following meanings:

m is 1, 2, 3 or 4;

n is the same or different 0,1,2,3 or 4;

r is the same or different 0,1,2,3 or 4;

m + r is 1, 2, 3 or 4;

n + r is O, 1,2, 3 or 4; R is the same or different

R ¹ is the same or different H, halogen or R ² ;

R ² is identical or different (Ci-C ₈₎ -alkyl, (C ₄ -C ₈₎ cycloalkyl, _{_(C2-Ci2)} - alkenyl, _(C6 -Cio) aryl, (C ₇ -C ₂₀ ) -aralkyl or (C ₂ -C ₂₎ -alkynyl, wherein aryl is unsubstituted or xy with one or more halogen, cyano, nitro, hydro-, amino, -C ₂ -alkyl which is optionally interrupted by 1 to 4 oxygen atoms in ether function is C ₁ -C _2O -AI, dC ₂ o-alkylamino or Ci-C ₂₀ are substituted dialkylamino koxy;

R ⁴ , R ⁵ , R ⁶ are identical or different H, halogen, CH ₃ or C ₂ H _5, Y ¹ , Y ² , Y ³ , Y ⁴ , Y ⁵ , Y ⁶ are identical or different (C _r C ₄ ) -Alkylene which is unsubstituted or substituted by one or more halogen atoms;

s is O, 1, 2, 3, 4, 5, or 6; and

t is O, 1, 2, 3.

2. Use according to claim 1, wherein the symbols and indices in the formula (I) have the following meanings: M is twice hydrogen, twice lithium, magnesium, zinc, copper, nickel, VO or TiO:

m is 1 or 2;

n is O, 1 or 2;

r is O, 1 or 2;

R is the same or different

R ¹ is the same or different H or R, 2.

R ² is identical or different (C _r Ci ₂₎ -alkyl, (C ₅ -C ₇₎ -cycloalkyl, phenyl, (C ₇ - C ₆₎ aralkyl, wherein the phenyl is unsubstituted or substituted by one or more halogen, (CRCI ₂ ) -alkyl or (CrCi ₂ ) -alkoxy;

R ³ is the same or different R ¹ ;

is 0, 1 or 2; and

t is O, 1 or 2.

3. Use according to claim 1 or 2, wherein the symbols and indices in the formula (I) have the following meanings:

M is hydrogen twice, m is 1 or 2;

n is 1 or 2;

r is 0;

R is the same or different

R ¹ is the same or different H or R ² ;

R ² is identical or different (Ci-d ₂ -) - alkyl, phenyl, (C ₅ -C ₆₎ -cycloalkyl, where phenyl is unsubstituted or substituted by one to three radicals from the group F, Cl, (Ci-C ₆₎ Alkyl and (C _r C ₆ ) alkoxy;

R ³ is the same or different R ¹ ;

s is 0 or 1; and

t is 0 or 1.

4. Use according to one or more of claims 1 to 3, wherein the symbols and indices in the formula (I) have the following meanings:

m is 1;

n is 1;

is O; M is H;

R is

R ¹ is the same or different H or R ² ;

R ² is (C _r C ₂₎ alkyl or phenyl;

R ³ is H or (C _r Ci ₂ ) alkyl.

5. Use according to one or more of claims 1 to 4, wherein as compounds of the formula (I) compounds of the formula (Ia) are used,

where the symbols have the following meanings: X ^{1 "7} are identical or different R or R ¹ ,

and

M, R and R ¹ have the meanings given in the formula (I) in claim 1.

6. Use according to one or more of claims 1 to 5, wherein the liquid is a mineral oil.

7. A liquid containing one or more phthalocyanines of the formula I according to one or more of claims 1 to 5 as a marker.

8. A liquid according to claim 7, wherein the liquid is a mineral oil.

9. A method for the identification of liquids which contain at least one compound of formula (I) according to one or more of claims 1 to 5 in an amount sufficient to induce detectable fluorescence when irradiated with a suitable wavelength, wherein

b) the excited fluorescence radiation is detected with a device for the detection of radiation in the long-wave visible range or in the near infrared range.

10. phthalocyanine of the formula (I),

where the symbols and indices in the formula (I) have the following meanings:

m is 1, 2, 3 or 4;

n is the same or different 0,1,2,3 or 4;

r is the same or different 0,1,2,3 or 4;

m + r is 1, 2, 3 or 4;

n + r is O, 1, 2, 3 or 4;

R is a group

wherein the three above groups must each have at least 10 carbon atoms,

and R ¹ , R ² , R ³ , s and t have the meanings given in the formula (I) in claim 1.

1 1. A process for the preparation of phthalocyanines of the formula (I) according to claim 10, wherein a phthalodinitrile of the formula (II),

wherein the symbols and indices have the same meanings as in the formula (I) according to claim 10, in the melt with a reducing agent in the presence of a base.

12. Phthalodinitriles of the formula (II) according to claim 11.

13. Iminoaminoisoindolines of the formula (IIIa) and (IIIb)

where the symbols and indices have the meanings indicated in formula (II) in claim 10.