DE2008067A1 - Lubricant additive contng organic lead compounds - Google Patents

Abstract

A lubricant additive consists of (a) trialkyl-Pb-cyanamide or trialkyl-Pb-cyanoguanidine, the alkyl gp. having 1-12C, (b) where X = N, CH or CR', Y = CH, CO, CR or N if X = CH or CR', R = alkyl with 1-12C, R' = phenyl and alkyl with 1-20C, R" = H, NH2, NHR"', alkyl with 1-4C or phenyl R" = phenyl and alkyl with 1-20C and O = phenyl, with provic. that at least one of the following is true: R" is NH2 or X = CR', R' being O, Y = CR and R" = NHR"', (c) and in each case total of C atoms in R and R' is at least 8.

Description

Organic lead nitrogen compounds as additives and lubricants Process for their production Addendum to patent application Akt.Z. (Patentnurrimer :) P 16 44 904.0 (my file 9264 A) Summary of the invention Subject matter of the invention are organic lead nitrogen compounds in which the lead is tetravalent and with Carbon and nitrogen are linked, as a lubricant additive, to the wear and tear counteracts. In many cases the utility is improved due to the incorporation certain antioxidants. It is also a method is described after the Trialkyl lead hydroxide with the corresponding heterocyclic compound in one organic solvent to form water and the desired organic Lead nitrogen compound is implemented.

The invention relates to organic lead compounds in which the lead tetravalent and directly connected to carbon and nitrogen, as well as the same containing lubricants.

An object of the invention is to produce organic To create lead compounds that are useful as additives for lubricating oils and greases are.

Another object of the invention is to To create additives that considerably improve the lubricating properties of oils and fats to enhance and at the same time an improvement in anti-wear properties of oils and fats.

Another task underlying the invention is to Create auxiliary compounds in the form of antioxidants that interact with the lead compounds are compatible and significantly increase the lubricating effectiveness of the same.

In general, those contemplated in the present invention can be used Connections of the kind given above by the following drawings or formulas reproduce.

a) Trialkylplumbyicyanamid and trialkylplumbylcyanoguanidine, where the alkyl group has 1 to 12 carbon atoms, where X; = N, Cfi or Cr ', Y = CH, C # or ii, when X = ai or CR', R = alkyl with 1 to q2 carbon atoms, R '= phenyl and alkyl with 1 to 20 carbon atoms, R '' = H, NH2, NHR ''', alkyl with 1 to 4 carbon atoms or phenyl, R "' = phenyl or alkyl with 1 to 20 carbon atoms, # = phenyl, provided that at least one of the following conditions applies: R "is NH2 and X is CR ', where R' = #; Y = CP and R '' = = NHR "'.

where X and R have the meaning given under b), but the The total number of carbon atoms in the group R and R 'is at least eight.

Examples of the novel organic lead compounds are given in Table I: Table I r. ì ^ ltBIe formula 1 (Tri.netIIyl-nlwabyl) cyanamid) cyana! Rlid (CI-I3) 3PbiHCN 2 - (Tributylplumbyl) imidazole HC-M e U HCX / CH N th- (e4H9) 3 3 N- (TribuLylplumbyl) benzimidazole H / c IIC CN NC C CH CN II Pb- (C4H9) 3 4 3lilmino-iJ- (tributylplumbyl) - NH24 N s 1, 2, 4-triazole "" N CH tJ Pb- (C4i9) Pb (C4Hg) 3 5 i4- (tributytpltzbyl) -benzotriazole H c HC 1 ri II CC / / \ / CN Pb (C4Hg) 3 6 N- (TriäUylplumbyi) -4, 5-di- phenylimidazole 1t acc pr-c GH / P1t - (C2It5) 3 7 N- (Triheptvlplumbyl) -imiclazole MC ^ T IV II HC Cf '\ / I a PL-- (C7tIl5) 3 3 8 N- (TributsZlplumbyl) -2-undecyl- benzimidazole / c IiC C IXJ 1, II IIc C cc I23 C tq H Ph- (C (c4L9) 9 N- (triethylplumbyl) -2-methylw iCC ---- T. imidazole VI IICv C-CH 7th lt ' b (C2H5) 3 10 N- (triethylplumbyl) -2-ethyl-CH3-C N 4-methylimidazole 3 IV II IICN 5 C2115 I. Pb- (C2H5) 3 11 N- (triethylplumbyl) -2-undecyl- IIC- --N imidazole II VI HC C HCN CC II ì (2 5) 3 12 N- (triisobutylplumbyl) imidazole iic N li II HC cii N Ph- (CH-CH (ClI3)) 3 13 Ii- (triethylplurbyl) -2- (branched- HC N chained) -undecylianidazole "" NC X CC ii Useful 11 23 Pb- (C2H5) 3 14 - zi- (TriäthylpluSDvl) -imidazole HC-N HC CH Hc cii N-Pb- (c2H5) 3 15 N- (triethylplumbyl) -4-methyl-5-cii3-cN (l-ethylpentyl) ^ imidazole "" CH, - (CH2),? CH-G CE N-Pb (C2H5) 3 (C2H5) 16 N- (tributylplumbyl) cyanoguanidine H 17 3-aniline-5-isopropyl-N- (tributyl- -lJ-C plllnbyl) -1,2,4-triazole,. .. NC CC H N Pb- (c4H93 18 3-Amino-5-phenyl-N- (tributylplumbyl) - NH2-C N 1,2,4-triazole "" N sC-0 N Pb- (C, H,) 3 19 3- (n-Dodecylamino) -N-tributylplumbylt H lF244vtruatiktriazol (nC 12H25) IV II N CH f N Pb- (C4H9) 3 20 3- (n-Butylamino) -Ii- (tributylplumbyl) - ii N 1,2,4-triazole (4H9) - £ -c11 II it CII according to Pb- (c41i9) 3 21 N- (triethylplumbyl) cyanoguanidine 22 N- (tri-n-butylplumbyl) cyanoguanidine.

Making Connections 17-20 These connections can be made by Mixing of tributyl lead hydroxide with an expedient 1,2,4-triazole in one organic solvent and subsequent recrystallization from ethanol will. A detailed description of the production can be found below in connection with the description of the preparation of compounds 2-14 below.

In addition to the above compounds may be mentioned: (Tribu4ylplumbyl) cyanamide, (tridodecyl-plumbyl) cyanamide, N- (tributyl-plumbyl) -2-eicosylimidazole and N- (tributylplumbyl) -4-butylimidazole. The above formulas are usually normal alkyl groups unless otherwise specified However, any branched-chain alkyl group with the same number of carbon atoms can be used be replaced by straight-chain ones. About the compounds in lubricating oils and fats To convey solubilities, it is appropriate that the total number of carbon atoms not in the alkyl and phenyl groups linked to the imidazole or triazole ring is greater than 35 and preferably not greater than 20.

The following are the manufacturing methods for the above given Connections communicated.

Production of compound 1: Trimethyl lead cyanide is produced, by adding an equinolar amount of cyanamide to the trimethyl lead hydroxide in ethanol will. After the solution has been concentrated, the compound crystallizes out.

Preparation of the cyclic compounds, such as compounds 2 to 14: It becomes Triorganobleihydro: 'id with the corresponding heterocyclic compound (which is commercially available) mixed in an organic solvent and then out Recrystallized ethanol.

In the manufacture of N- (tributylplumbyl) imidazole (compound No. 2) becomes an essential tributyl lead bromide solution (made from 1 azole Lead dichloride) with eill, excess silver oxide (from 100 g silver nitrate) verrk rt until bromine-free (about 30 minutes). The silver bromide precipitate is mediated Separated by filtration and the remaining solution 34.4 g of imidazole (0.507 rol ) added while stirring and dissolving the imidazole. Then the total mass concentrated to dryness. The residue after solidification is made from 500 ml of 96% strength Recrystallized ethanol, yielding 210 g of N- (tributylplumbyl) imidazole, (93% based on based on the hydroxide, 71% based on the lead dichloride).

preparation of compounds 16, 212 and 22: It becomes a mixture of 20 g (0.05 mole) tributyl lead hydroxide and 4.2 g (0.05 itole) cyanoguanidine in 350 ml of ether at room temperature for 3 hours. The white insoluble solid seems to reach an irreducible minimum and it becomes solid anhydrous Sodium sulfate added. The mixture is stirred for an additional 0.5 hour and then filtered. The filtrate is freed from volatile constituents under vacuum. The residue consists of 20.3 g of a yellow viscous oil. Calculated analytical values for C14H30N4Pb: Pb = 44.9, found Pb = 45.7 (by means of trap photometer) and 46.4 (by means of X-ray fluorescence). The infrared analysis confirms the proposed structure.

The connections 21 and 22 are carried out in the same way as further prepared above with respect to compound 16 with the exception that triethyl chloride hydroxide and triheptyl lead hydroxide can be used in place of trybutyl lead hydroxide.

as is to prepare the above-described cyanoguinidine compounds further described in the German patent (patent application P 16 68 285).

In the following table are the physical properties and Analysis values of some compounds according to the invention are shown.

Table II Compound Fp or Zer analysis b settlement found calculated temperature ° C HC NZ 100 + 1 lt = 7.49 7.75 II VI Pb- 57.06 57.32 HC CH according to t (2 No. 2, Table I Mp 48-50 N = 6.20 6.29 # 12, Table I m.p. 167 Pb = 46.49 46.50 HC NFN = 11.83 11.6G IV II N cii N-Pb- (C2H5) 3 NH2-C iQ m.p. 178-181 N = 15.52 14.84 .. .. N CH N-Pb- (C2Ei5) 3 No. 4 Table I Mp 116-118 N = 12.45 12.14 Pb = 44.83 44.89 No. 3, Table I Mp 104-105 C = 45.70 46.04 Ii = 6.37 6.51 r. 5 Table I m.p. 103 N = 9.04 8.46 Pb = 42.07 41.72 No. 1 table IZ 126-127 N = 9.71 9.55 Ph = 70.82 70.64 (C4H9) 3PbNHcI; Oil N = 6.34 6.68 Ph 49.60 49.38 The above compounds have proven to be very valuable as additives for lubricating oils, specifically hydrocarbon oils in particular, and this prevents or prevents wear and seizing under the boundary conditions of the lubrication process. They can also be used with the same effect in fats based on hydrocarbons, such as fats covered with lithium hydroxystearate.

Illustrative examples of hydrocarbon oils to which the invention Compounds that can be added are naphthenic products or paraffinic Products or mixtures thereof. Such oils are often referred to as West Coast Raw Product, Pennsylvania Product, or Mid-Continent Product. The novel organic lead compounds can also be used in synthetic pobjesterblen be added, which are the esters of polycarboxylic acids, such as sebacic acid, adipic acid, Represent azelaic acid and the like, and synthetic polybutene lubricants, which are formed by the polymerisation of isobutene, as well as other synthetic ones Lubricants such as polyalkylene glycols, tetrahydrofuran polymer oils, phosphate esters, aromatic ethers and the like.

Even if the compounds according to the invention are useful as lubricating oil additives are, their effect is increased to a considerable extent by addition an antioxidant in the form of a phenolic compound, e.g.

the antioxidant A specified here, which is identified in detail below will. In particular, the effect of the antioxidant in many cases is that the wear value of the lubricating oil increases at a higher temperature, such as 125 ° C will. There is also a beneficial effect in terms of increasing the Solubility of the lead nitrogen compounds according to the invention, so that it is thus possible is to apply preventions in the oil, which otherwise have too low solubilities.

The essential tests that determine the value of the additives for the above indicated purposes are carried out in a Shell-4 ball lock tester, which is a generally known device. Find related booklets in the publication Lubricating Engineering, Volume 1, page 35, 1943. In this device becomes a 12.7 mm metal ball under a specific load rotated against three equal balls connected in an equilateral triangle test are. These balls lie in a heated cup filled with the lubricant before. The temperature of the lubricant is measured by a thermocouple, the is inserted into a heater in the eecher. The one on the lower ball holder applied torque is a measure of the frictional resistance on the reed surfaces and is continuous by means of a corresponding measuring device and recording device4 measured. The rubbing of the upper ball in the presence of the lubricant against the lower three balls leads to the formation of a circular shape in the lower balls concave mark.

If there is no wear, the balls show a very low level of wear Marking diameter (Hertz diameter), which is the result of a plastic Deformation of the balls is and is by means of the material's modulus of elasticity and the applied load. After an attempt to wear the three marks measured to 0.01 mm under a microscope and the average The diameter of the markings is a measure of the wear and tear and the basis of calculating the unit pressure.

The pressure in the contact zone of the balls in the 4-ball test decreases decreases significantly in the course of the test, as the load remains constant while the wear marking area, which absorbs it increases. E.g.

the marking diameter for a 15 kg load on AISI 52100 steel balls to approximately 0.22 mm and this corresponds to a pressure of 16.100 kg / cm². As soon the marking diameter has reached a value of 0.5 mm, is the pressure on 6150 kg / cm2 dropped.

One type of 4-rugel test is provided so that the resistance to Wear is measured. This test uses the temperature of the lubricant at 500 or at 1250C, the rotation speed at 1800 rpm and the load held at 15 kg. The test is periodically interrupted for that continued until the average marker diameter increases to 0.47 mm and this corresponds to a zone pressure of 3,500 kg / cm2. The until reaching This mark diameter required time is called the 11wearing time designated. Effective additives to prevent wear and tear can reduce wear time increase from 11-18 min to 100 min or more.

In Table III are tests on the compounds identified above reproduced, which are carried out by means of the 4-ball tester in mineral oil. The mineral oil used is a commercially available product (Humble Oil Co.) with the designation Bayol-85, which is a highly refined, white Paraffin oil with a viscosity of 17 cS at 380C is generally used for lubricant investigations is applied. A solution or finely divided suspension of the additive is used applied in an amount sufficient to form 1% by weight lead in the oil. Properties various connections that hold back the abrasion resistance 1 2 3 4 5 6 7 Additional color reaction oil solubility² wear time in minutes medium oil with no Anti with anti in clear oil³ in oil and antioxidant A antioxidant oxidanz oxidanz A 50 ° 125 ° 125 ° A¹ none - - - 18 11 -1 none low low 3000+ 120 800-2400 2 yes high high 3000+ 170 3000+ 3 yes - - 3000+ 90 -4 yes - - 3000+ 150 -5 none - - 2500gesch 39 -7 yes - high 3000+ - 600 8 yes - high 3000+ - 35 10 yes medium medium 3000+ 100 70 11 yes high high 3000+ 150 900 + 4 12 yes low low 3000+ 150 -14 yes low low 3000+ 100 -15 (yes high high 3000+ - - (0.1% Pb) 16 yes low low 3000+ 220 -17 yes medium high 900+ 130 -18 yes low - 900+ 240 - (1) Antioxidant A is 4,4'-methylenebis (2,6-di-tert-butylphenol).

The same is done at a concentration of 0.5 to 1.0% by weight of the oil applied. In general, the color reaction with d & in antioxidant A is an indication on a beneficial effect of the ntioxidaz in connection with the additive the 125 0C test.

(2) The solubility of additives 3, 4 and 5 is not determined, however, it is believed that the solubilities are poor. Give columns 3 and 4 the solubilities with and without applied antioxidant again. Generally means "low" means a solubility of 0.1% or less on the basis of the weight of the oil; "medium" 0.5% by weight and "high" above 1.0% by weight.

3) In the tests of additives 4 and 8, the oil contains 0.5%. of the antioxidant A.

t4) The test is completed after 900 minutes and does not lead to any Indication of abrasion.

It thus follows that the solubility of the Zusatzraittels in the Oil is an important factor in determining its suitability.

It has been found that a number of compounds, their structure The same as additives should make themselves appear suitable as products prove that have too low a solubility. In some cases it turns out expect the additives in the wear test to be better than their solubility would let. The explanation for this is that in the tests the additive is effective in suspension. Hence the solubility factor must go along with the wear factor must be taken into account.

The effect of preheating the mineral oil additive solution will by heating such a mixture for 2 hours at 1250C in the test cup of the 4 ball tester determined at this temperature before the start of the wear test. In the case of compound 4, such preheating leads to an increase in the Wear time at 125 ° C from 150 minutes to over 1560 minutes.

Even if the antioxidant A has the effect of the additive at 125 ° C improved, it does not show any back stopping effectiveness as such of wear and tear. When it is thus present in an amount of 0.5% by weight of the oil, the wear time is practically the same as when using only the clear oil is indicated in the first line of the table above.

Tests of the additional compound 2, dissolved in iliner oil on various Concentrations are shown in Table IV.

These tests are performed in the same manner as related to Table III described, carried out. The, amount of compound 2 tested is sufficient to make a solution of the additive at a given percentage to yield to lead.

Table IV Anti-Wear Tests of Compound 2% Lead X Antioxidant Temperature ° C Wear time in minutes 3 0 50 18 0.01 0 50 730 0.01 0.01 50 675 0.02 0 50 1950 0.02 0.05 50 1720 0.10 0 50 3000+ 0 0 125 11 0.5 0 125 71 0.5 0.5 125 450 0.5 1.0 125 3000+ 1.0 0 125 170 1.0 0.5 125 1120 o 110 125 3000+ 2.3 0 125 47 2.3 0.5 125 3000+ 11.6 0 125 3000+ 11.6 0.5 125 3000+ As based on the values above can be seen, the additive leads to long wear times compared to clear ìlineral oil. It also follows that the wear time increases as it increases the percentage of the lead compound, but the additive itself is such small concentrations of 0.01% lead are effective.

It becomes a second type of 4-ball test using a commercially available one and no additive-containing lubricating oil is applied to the anti-seizure protection to measure. how he got through the oil under extreme pressure conditions (ED>) is achieved at boundary conditions. This test involves a series of separate attempts each for an hour, carried out with different loads, whereby the load is increased progressively up to a maximum value of 50 kg. The oil temperature is 110 or 750C and the rotation speed is 1800 rpm. When a "critical load" is reached, the one-hour marking diameter increases from about 0.5 to 1.5 - 2 mm due to the seizure. The critical stress test represents an important evaluation of motor vehicle '' engine oils for which a critical Load of 45 kg is occasionally chosen as the lowest acceptable value.

To carry out the critical stress test, the connections 2, 7 at 11 and 15 as shown in Table V below.

Table V Critical load tests at 110 ° C for 60 minutes base oil SAE 20 mineral oil compound 2+ 2 7 2 11 15% lead 1.0 1.0 1.0 0.2 0.2 0.2% antioxidant A 0.6 - 0.6 0.6 0.5 0 0 load kg 35 -, 0.33 40 0.31 -, 0.38 ö, 82 0.85 0.90 45 0.3, 3j 0.81- 0.67 50 0.38 0.83 0.96 0.71 1.13 1.06 1.01 estimated critical load, kg) 50 50> 50 45 46 48 + at 750C A control test for the antioxidant is present, but no lead is present, results in a marker diameter of 1.58 mm with a 30 kg load at 1100C in 60 tginutes.

With a load of 40 kg, the marking diameter is 1.86 mm.

The estimated critical load was 26 kg.

It is found that when the concentration of lead is reduced to one low value of 0.2 the critical loads for connections 2, 11 and 15 are still in a satisfactory range, i.e. over 44 kg. A doubling the amount of antioxidant A did not lead to any further beneficial effects on the compound 2. At 750C there is relatively little wear in the presence of compound 2 before, even with a 50 kg load. The compound 7 turns out to be slightly more effective than compound 2.

In addition to an anti-wear device and a Antioxidant is also the use of an additive in the form of a detergent dispersant Recommended (among other things) for the finished motor oil of good quality. It was found, that the compounds according to the invention completely with the known cleaning dispersants, such as 2.0% Oronite, 1200, a commercially available ashless material, which is the reaction product from alkenylsuccinic anhydride and tetraethylene pentamine, the Alkenyl radical has an Itolecular weight of about 1000-1200, are compatible. Furthermore, the compounds according to the invention also contain rust inhibitors compatible, as is commonly used nowadays in motor vehicle engine oils such as 0.5% Bryton C 45 (a commercial product that has a basic Contains calcium sulfonate and has a molecular weight of 400-600). Among some Conditions of use can also be a generally known corrosion inhibitor are advantageously used, such as e.g. 0.5% Amoco 48 (a commercially available Product of unknown composition, which is likely a sulfurized terpene is). This latter type of additive is particularly useful where that 61 comes into contact with copper, e.g. in the bearings or shafts. For lubricants, the the additives contained above can be the required amount of lead compound based on a largest amount corresponding to 1% by weight of the oil, down to about 0.01%, preferably at least about 0.1%.

The effectiveness against abrasion of the compounds according to the invention is in no way reduced by the presence of these other suitable oil additives, rather, it can be increased as a result! There were e.g. Abr eb, -, tes ,, t, s ,, - 'm a commercially available SAE 20 oil containing 0.5% lead as compound 2 and 1% antioxidant A contains, and furthermore cleaning dispersants, rust inhibitors and corrosion inhibitors, as indicated above. In the 4-ball test hel a load of 15 kg and a temperature of 50 ° C., there was no visible abrasion after 3000 minutes a. In the critical stress test at 110 ° C, the mark diameter was with a load of 50 kg only to 0.82 mm, which is a critical load value of over 50 kg.

The compounds according to the invention are used as additives for lubricating oils subjected to the other known test methods, namely including: 1. Rust Prevention Test: This represents an adaptation of a known Tests (ASTM D-665) for the rust tendency of turbine oils. It is a Steel spindle with a rough surface immersed in the test oil for 24 hours at 60 ° C, and the oil by stirring in water or in a modified test) with hydrochloric acid kept saturated.

2. Panel-Coker Test: This is a heat stability test performed by the Ethyl Corporation and is used in other laboratories. An aluminum alloy panel measuring 3.8 x 8.0 cm is enclosed in a closed Housing heated at 290 ° C for 19 hours. Hot test oil is applied to the Panel sprayed in a specific pattern for 5 seconds. The remaining 55 seconds gives an opportunity for an oil film to be formed with formation an adhering coke deposit. At the end of the test, the appearance of the Panels noted and the total weight gain was measured.

3. Polyveriform test: This is a well-known test Test based on which the tendency of the oil to oxidize and the resultant Corrosion of copper-lead bearings is measured.

4. Oldsmobile Cam and Tappet Wear Test: This test uses a 1960 Oldsrnobile Plotor fitted with calibrated valve lift-off springs that Develop 50% more power than normal and operate under standard conditions, where the wear of the cams and valves is measured.

5. L-38 Oil Oxidation Test: This is a test similar to the Polyveriform Test and leads to a rigorous test of the resistance of the bl high temperature and its tendency to corrode copper-lead bearings.

The tests above are standard tests and are accurate descriptions the details are not required here. the connection 2 along with any of the required additives results in the lubricating oil passes these various tests satisfactorily.

The following Table VI shows the results obtained with the above tests described can be obtained with a dl containing 0.5% by weight of lead, such as compound 2, contains, as well as for a high quality commercial oil. The oil, the connection 2 is a clear SAE 20 oil that also contains 1% antioxidant, 2% Oronite 1200 Cleaning dispersant, 0.5% Bryton C 45 rust inhibitor and 0.5% Amoco 48 Contains corrosion inhibitor. All percentages are on a weight basis.

Table VI Test Methods and Compound High Quality Observations 2 commercial oil containing common oil 1) Panel Coker Weight Gain, 7 50-200 mg contrasting color none brown-black 2) Polyveriform storage weight loss, mg 8 15 acid number 2.1 3% increase in viscosity, 38 ° C 25 80 3) Oldsmobile cams and tappets Average abrasion 2.54 cm x 103 cams 0.18 0.2-0.3 Lifters 0.28 0.3-0.6 4) L-38 motor bearing weight loss, 13.5 mg 19 Appearance of the bearing clean dull or glossy Piston paint value 10 9 acid number increase 1.6 1.8 percent increase in viscosity 38 ° C -3.2 7 100 ° C 0 3 Even lower than given in Table VI above Concentrations such as 0.1% lead as Compound 2 have been found in the Panel Coker Test proved satisfactory.

Be sure to apply SAE 10 oil that contains 0.5% antioxidant clear precipitate of only 7 mg obtained. Similarly, 0.1% lead lead to the Compound 11 contributed to yellowish colored precipitates weighing 33 mg the Panel-Coker test using mineral oil and 0.1% antioxidant.

The lubricating oil containing the compound also became too Isooctane was added for the purpose of lubricating a two-stroke outboard motor and proved so as a very strong anti-abrasion agent. A percentage as low as Resulted in 0.047% lead in the oil or 18 parts per million in the fuel-oil mixture to a complete prevention of wear. Half of that crowd led practically a reduction in wear and tear.

Claims (31)

Claims 1. A composition consisting essentially of a hydrocarbon lubricating oil or grease and an additive for the same, which is selected essentially from the compound of the class consisting of (a) trialkylplumbylcyanamide and trialkylplumbylcyanoguanidine, the alkyl group having 1 to 12 carbon atoms, where X = N, CH or CR ', Y = CH, C, CR or N, when X = CH or CR, R = alkyl with 1 to 12 carbon atoms, R' = phenyl and alkyl with 1 to 20 carbon atoms, R11 = H, NH2, NHR111, alkyl with 1 to 4 carbon atoms or phenyl, R11 = phenyl and alkyl with 1 to 20 carbon atoms and = phenyl, with the proviso that at least one of the following conditions applies: R is NH2 and X = CRl, where RL = is; Y = CR and R11 = NHRW ', where X and R have the meaning given under (b), but the total number of carbon atoms in the groups R and R 'is at least 8. 2, composition according to claim 1 in combination with an oil-soluble antioxidant. 3. The composition of claim 2, wherein the antioxidant is a bis (alkylhydroxyphengl) methylene and is present in an amount of about 0.1 to 1.0 wt.%. 4. The composition of claim 1, wherein the organic lead nitrogen compound is present in an amount of at least about 0.51% by weight calculated as Biei. 5. Composition according to claim 1, wherein the organic lead stick, substance compound is the N- (trimethylplumbyl) cyanamide. 6. class according to claim 1, wherein the organic lead nitrogen compound which is N- (tributylplumbyl3imldazole. 7. cup according to claim 1, wherein the organic lead nitrogen compound which is N- (tributylplumbyl) benzimidazole. 8. The composition of claim 1, wherein the organic lead nitrogen compound is 3-amino-N- (tributylplumbyl) -1,2,4-triazole. 9. The composition of claim 1, wherein the organic lead nitrogen compound is 3-aniline-5-isopropyl-N- (tributylplumbyl) -1,2,4-triazole. 10. The composition of claim 1, wherein the organic lead nitrogen compound is 3-amino-5-phenyl-n- (tributylplumbyl) -1,2,4-triazole. 11. The composition of claim 1, wherein the organic lead nitrogen compound which is N- (tributylplumbyl) benzotriazole. 12. The composition of claim 1, wherein the organic lead nitrogen compound which is N- (triethylplumbyl) -4,5-diphenylimidazole. 13. The composition of claim 1, wherein the lead organishe nitrogen compound which is N- (tributylplumbyl) -2-undecylbenzimidazole., 14. Composition according to claim 1, at which the organic lead nitrogen compound is N- (triethylplumbyl) -2-methylimidazole is. 15. The composition of claim 1, wherein the organic lead nitrogen compound which is N- (triethylplumbyl) -4-methyl-5- (1-ethylpentyl) imidazole. 16. The composition of claim 1, wherein the organic lead nitrogen compound which is N- (triethylplumbyl) -2-undecylimidazole. 17. cup according to claim 16, wherein the undecyl group of the lead organic Nitrogen compound is branched chain. 13. Jasse according to claim 1, in which the organic lead nitrogen compound which is LJ- (triisobutylplumbyl) imidazole. 19. The composition of claim 1, wherein the organic nitrogen compound which is t- (triethylplumbyl) imidazole. 20. The composition of claim 1, wherein the lead nitrogen compound is an N- (trialkylplumbyl) cyanoguanidine, and the alkyl group is 1 to about 12 carbon atoms having. 21. Let according to claim 20, wherein the alkyl group is ethyl. 22. Let according to claim 20, wherein the alkyl group is butyl. 23. The composition of claim 20, wherein the alkyl group is heptyl. 24. The composition of claim 1, wherein the organic lead nitrogen compound N- (trialkylplumhyl) imidazole, and the alkyl group is 1 to 12 carbon atoms having. 25. The composition of claim 1, wherein the organic lead nitrogen compound is N- (trialkylplumhyl) imidazole where R is an alkyl group having 1 to 12 carbon atoms and R 'is an alkyl group having 1 to 20 carbon atoms. 26. class according to claim 1, wherein the organic lead nitrogen compound Is N- (Triheptylplumbyl) imidazole. 27. class according to claim 2, with a corrosion inhibitor. 28. A composition according to claim 2 which contains a cleaning dispersant. 29. The composition of claim 1, wherein the organic lead nitrogen compound In an amount of at least 0.1% by weight, calculated as lead, is present. 30. Composition according to claim 1, in which the organic lead nitrogen compound Is N- (triethylplumbyl) -2-ethyl-4-methylimidazole. 31. The composition of claim 1, wherein Y = CH, C #, or N when X = CH or CR '.