Lubricant composition

FIELD: chemistry.

SUBSTANCE: present invention relates to a lubricant composition which includes base oil and one or more additives, wherein the composition includes a detergent additive which is a reaction product of an acidic organic compound, a boron compound and a basic organic compound of general formula where a equals 1 or 2 and where R1 and R2 are independently selected from hydrocarbon groups, provided that when a equals 2, groups R1 and R2 are selected independently, and has sulphate ash content (according to ASTM D 874) of at least 0.1 wt % and at most 0.60 wt %; and a total base number (TBN) (according to ASTM D 2896) of at least 8.0 mg KOH/g and at most 15.0 mg KOH/g, potassium content (according to ASTM D 4951) higher than 0.10 wt % and at most 0.15 wt %.

EFFECT: present invention relates to use of a lubricant composition in a gas engine to improve oxidation resistance and maintain the base number.

5 cl, 3 ex, 2 tbl

 

The present invention relates to lubricating compositions, particularly for use as oil for gas engines.

Energy gas engines operate continuously at close to full load, with stops only for the maintenance and/or replacement of lubricating oil. As a result the lubricating oil during use is exposed to high temperature environment. Such high-temperature environment may cause relatively severe oxidation of the lubricating oil and nitration processes, which lead to the decrease in the base number, high viscosity and contamination of the engine with the consequent increase of fuel consumption.

In addition, for gas engines who run non-natural gas (sour gas), additional lubricating oil to neutralize acidic combustion products in the lubricating oil or other acidic compounds already present in the fuel.

In commercially available oils for gas engines with low ash content are typically used values of sulfate ash content of about 0.5 wt.% and the value of the TBN (total base number) to a maximum of about 7 mg KOH/g. Examples of such commercial products are Mobil Pegasus 605 and Mobil Pegasus 1005, available from Exxon Mobil Corporation.

According to the reference the technical data sheets Mobil Peasus 605(option 01-2006) has a sulfated ash 0,52 (ASTM D 874) and the TBN value of 4.9 (ASTM D 2896), and Mobil Pegasus 1005 has a sulfated ash of 0.5 and the value of TBN 5.

The aim of the present invention is to improve the resistance to oxidation and nitration and preservation of the base number of lubricating compositions, especially for use as oils for gas engines.

Another objective of the present invention are alternative lubricating compositions for use in a gas engine.

One or more of the above and other objectives can be achieved using the present invention, receiving a lubricating composition comprising a base oil and one or more additives, wherein the composition has a

the sulfated ash (ASTM D 874) at least 0.1 wt.% and at most 0.60 wt.%, preferably at most 0.55 wt.%, preferably at most 0.50 wt.%; and

- the total base number (TBN) (ASTM D 2896) of at least 8.0 mg KOH/g and a maximum of 15.0 mg KOH/g.

In this respect it should be noted that although in document WO 2007/117776 the lubricant composition is disclosed that contains less than 1.0 wt.% sulphated ash and total base number of at least about 8.5 mg KOH/g (although in paragraph [0032] WO 2007/117776 indicates that the total ash content in some embodiments may be 0.1 to 0.7 wt.%), in the examples in WO 2007/117776 there is no actual proposal or indication of �oppozitsii, containing at most 0.60 wt.% sulphate ash, and at the same time with a TBN value of at least 8.0 mg KOH/g.

Also, as can be seen from paragraph [0003] in WO 2007/117776 it is proposed to add some selected nitrogen-containing dispersing agents to support TBN values. However, found that this leads to a slight saving TBN compared to the use of detergents (detergents).

On the website http:/atlantis-usa.com/indexl/mdex.htm disclosed bassolino oil for gas engines with a sulfated ash 0.02 wt.% and the size of the total base number 13. However, there is no evidence that this information was available to 12.08.2009, i.e. it appeared after the priority date of this application.

In connection with the creation of the present invention unexpectedly discovered that lubricating compositions of the present invention can exhibit improved oxidation stability, base number maintaining and resistance to oxidative nitration. This leads to a longer ODI (periods between two consecutive shifts oil), which is very desirable, in the light of downtime and lower maintenance costs of a gas engine. Also lubricating composition of the present invention can exhibit the desired properties to the compatibility with sealing materials.

The content sulph�a combined ash in the lubricating compositions of the present invention exceeds 0.1 wt.%. However, preferably, the sulfated ash content exceeds 0.3 wt.%, preferably, exceed 0.4 wt.%, even more preferably, higher than 0.45 wt%.

According to a preferred embodiment of the invention, the alkali number of at least 8.5 mg KOH/g, preferably at least 9.0 mg KOH/g. Typically, a base number is less than 15,0 mg KOH/g, preferably less than 12.0 KOH/g, preferably less than 10.0 KOH/g.

Also preferably, the composition had a content of calcium (ASTM D 4951) at most 0.15 wt.%. Usually the calcium content exceeds 0.05 wt.%, preferably, exceed 0.08 wt.%, even more preferably, greater than 0.10 wt.%.

According to a particularly preferred embodiment of the present invention, the lubricant composition includes a detergent which is a product of the interaction of acidic organic compounds, boron compounds, and basic organic compounds. In this respect, the typical reference is US 2005/0172543 and in particular paragraphs [0025] to[0077], incorporated herein by reference. Preferably, the above detergent has a molecular weight below 650. Preferably, the above detergent is present in an amount of from 0.5 to 4.0 wt.%, preferably, from 1.0 to 3.0 wt.% relative to the weight of the lubricating composition.

Even more preferably�, when the surfactant has the General formula (I) shown below

where a is 1 or 2 and where R1and R2represent an independently selected hydrocarbon group, provided that when a is 2, R1and R2selected independently.

The above hydrocarbon group, which preferably represents an alkyl group, may contain 1 to 50 carbon atoms, preferably from 12 to 30 carbon atoms, most preferably 14-18 carbon atoms.

According to the present invention, the lubricant composition preferably has a content of P (according to DIN 51363 T2) is at most 0.04 wt.%. Usually, the content of P exceeds 0.01 wt.%.

Accordingly, the lubricant composition of the present invention has a boron content above 100 ppm (according to ASTM D 4951), preferably higher than 200 ppm; moreover, the content of boron is typically below 600 ppm, preferably below 500 ppm.

It is also preferred that at least 50% of the TBN of the composition is ensured additives that do not contain metals (preferably, a detergent), preferably at least 55%, preferably at least 60%, even more preferably at least 65%, most preferably at least 70%. According to the present invention, the contribution to TBN additives that do not contain metal,calculated from TBN, certain to concentrate one Supplement, multiplied by the percentage added to the lubricant composition and divided by the total TBN of the final lubricating composition.

At least one not containing a metal additive can also be attributed to ash-free additive, as it usually will not give any of sulphate ash, modes when subjected to impact by ASTM D 874. Supplement, referred to as "contains no metal" if it does not contribute to the metal content in the lubricating composition. Of course, it is clear that not containing metal additive of course will eventually be mixed with other material in the lubricating composition, and some other materials can include metals. In this case, some metal ions of another material can be connected with the material not containing metals. However, such a compound in situ is not intended to identify additive as an additive that contains no metal. Thus, more specifically, the additive is an additive that does not contain metal, prior to mixing with other components. As indicated above, in a preferred embodiment at least 50% of the TBN of the composition is provided with detergents that do not contain metals.

There are no particular limitations regarding the base oil used in the lubricating compositions of the present invention, and can usually� to use various conventional mineral oils, synthetic oils and esters obtained from natural sources such as vegetable oils.

The base oil used in the present invention typically may include mixtures of one or more mineral oils and/or one or more synthetic oils; thus, according to the present invention, the term "base oil" may refer to a mixture containing more than one base oil. Mineral oils include liquid petroleum oils and mineral lubricating oil solvent or acid cleaning of paraffinic, naphthenic or mixed paraffinic/naphthenic type which can be cleaned additionally final methods of Hydrotreating and/or dewaxing. Suitable base oils for use in lubricating compositions of the present invention are mineral base oil groups I-III, poly-alpha-olefins (RAO) group IV base oil obtained by a Fischer-Tropsh groups I-III, and mixtures thereof.

In the present invention the base oil group I, group II, group III and group IV" refers to a base oil of lubricating oils according to the definitions of American petroleum Institute (API) for categories III and IV. These categories API defined in API Publication 1509,15thEdition, Appendix E, April 2002.

Base oil obtained by a Fischer-Tropsh known in �echnique. The term "obtained by Fischer-Tropsh" means that the base oil is a product of the method of Fischer-Tropsch or derived from synthetic product according to the method of Fischer-Tropsch. The base oil obtained by a Fischer-Tropsh, can also be attributed to the base oil GTL (gas-liquid). Suitable base oils obtained by the Fischer-Tropsh, which usually can be used as base oil in the lubricating compositions of the present invention, are oils such as, for example, disclosed in EP 0776959, EP 0668342, WO 97/21788, WO 00/15736, WO 00/14188, WO 00/14187, WO 00/14183, WO 00/14179, WO 00/08115, WO 99/41332, EP 1029029, WO 01/18156 and WO 01/57166.

Synthetic oils include hydrocarbon oils such as olefin oligomers (including poly-alpha-olefin base oil RAO), esters of dibasic acids, esters of polyols, polyalkylene glycols (PAG), alkylnaphthalenes and deparaffinization isomerizate paraffins. You can usually use a synthetic hydrocarbon oils, sold by the Shell group under the name "Shell XHVI" (trade mark).

Poly-alpha-olefin base oil (RAO) and their getting well-known in the art. Preferred poly-alpha-olefin base oil that can be used in the lubricating compositions of the present invention, can be obtained from linear C2-C32preferably With6-C16, �life-olefins. Particularly preferred raw material for the poly-alpha-olefins are 1-octene, 1-detsen, 1-dodecene and 1-tetradecene.

Preferably the base oil used in the lubricating compositions of the present invention includes a base oil selected from the group consisting of poly-alpha-olefin base oil and base oil obtained by a Fischer-Tropsh, or a combination thereof.

The total amount of base oil incorporated in the lubricating composition of the present invention, preferably is a number in the range from 60 to 99 wt.%, preferably, the amount in the range of from 65 to 98 wt.%, and most preferably an amount in the range of from 70 to 95 wt.%, the total weight of the lubricating composition.

Typically, the kinematic viscosity at 100°C (ASTM D 445) of the composition ranges from 9.3 to 26.1 cSt, preferably, higher than 9.3 and not exceeding 16,3.

The lubricant composition of the present invention may also include one or more additives, such as antioxidant additives, antiwear additives, dispersants, detergents, sverhsoznanie detergents, additives against extreme pressure additives that modify the force of friction, viscosity modifiers, additives, lowering the pour point, passivator metals, corrosion inhibitors, demulsifiers, antipain�e additives agents that improves the compatibility with sealing materials and other base oil dilution, etc.

As a specialist in the art is familiar with the above and other additives, they are detailed in this description are not discussed. Specific examples of such additives are described, for example, in Kirk-Othmer Encyclopedia of Chemical Technology, third edition, volume 14, her. 477-526.

Antioxidant additives, which are commonly used include amine and phenolic antioxidant additives. Examples of suitable oxidation inhibitors are phenylnaphthylamine and diphenylamine.

Anti-wear additives, which are commonly used include zinc-containing compounds such as zinc dithiophosphates, selected from dialkyl, diaryl and/or alkylarylsulfonates zinc, molybdenum-containing compounds, boron-containing compounds and ashless antiwear additives such as substituted or unsubstituted tiofosfamida acids and their salts.

Examples of such molybdenum-containing compounds typically may include dithiocarbamate molybdenum, molybdenum compounds containing in the core of three functional groups, for example, such as described in WO 98/26030, sulfides of molybdenum dithiophosphate and molybdenum.

Boron-containing compounds which usually can be used include esters of boric acid, borated fatty and�ins, borated epoxides, borate, alkali metal or mixed alkali metal borate or an alkaline earth metal) and borated sverhsoznanie metal salts.

Used dispersant is preferably an ashless dispersant. Suitable examples of ashless dispersants are polybutyleneterephthalate and dispersants of the type of the Mannich bases.

Used the detergent preferably is sverhslojnoe detergent or mixture of detergents containing, for example, detergents of the type of salicylates, sulfonates and/or phenolate.

Examples of viscosity modifiers, which usually can be used in lubricating compositions of the present invention include a star-shaped copolymers of styrene and butadiene, star-shaped copolymers of styrene and isoprene and copolymers of polymethacrylate and copolymers of ethylene and propylene. In the lubricating compositions of the present invention can be used viscosity modifiers-dispersers.

Preferably the composition contains at least 0.1 wt.% additives, lowering the pour point. As an example, usually as effective lowering pour point additives can be used polymers of alkylated naphthalenes and phenols, polymethacrylates, Capoliveri maleic and fumaric keys�located the whereabouts. Preferably use no more than 0.3 wt.% additives, lowering the pour point.

In addition, in the lubricating compositions of the present invention as inhibitors of corrosion can generally be used such compounds as alkenylamine acid or its esters, compounds based on benzotriazole and connections on the basis of thiadiazole.

In the lubricating compositions of the present invention as anti-foaming additives can generally be used such compounds as polysiloxane, dimethylpolysiloxane and polyacrylates.

Compounds that can generally be used in the lubricating compositions of the present invention as additives that enhance or are compatible with seal include, for example, commercially available aromatic esters.

The lubricating composition of the present invention typically can be obtained by mixing one or more additives with the base(and) butter(oils).

The above additives are usually present in amounts in the range from 0.01 to 35.0, wt.% the total weight of the lubricating composition, preferably, in an amount in the range of 0.05 to 25.0 wt.%, preferably, 1.0 to 20.0 wt.%, the total weight of the lubricating composition.

In another aspect, the present invention relates to the use of lubricating compositions according to the present�the present invention, in particular, in the gas engine in order to improve one or more qualities, such as

- oxidation stability (in particular, when tested according to IP 48/97 (2004)); and

- preservation of the base number (in particular, when tested according to IP 48/97 (2004)).

Also, the present invention can result in improved cleanliness of the engine.

Lubricating compositions of the present invention is applicable for the lubrication of units in General, but in particular, useful as motor oils for internal combustion engines. Such motor oils include the application for passenger car engines, diesel engines, marine diesel engines, two and four stroke engines, etc., and in particular gas engines.

The present invention is described below with reference to the subsequent examples, which are not intended for any limitation of the scope of the present invention.

Examples

Composition of lubricating oils

Get a variety of lubricating compositions for use in a gas engine.

Table 1 shows the composition and properties of the test fully prepared compositions of oils for gas engines; the number of components are given in wt.% the total weight of the fully-formulated compositions.

All of the tested compositions of oils for gas engines beneficial�s as compositions of SAE 40, satisfying the so-called specifications of SAE J300 (as of may 2004; SAE means Society of Automotive Engineers (Society of engineers motorists)).

All of the tested compositions of oils for gas engines contain a combination of base oil, the additive package and a detergent, wherein the additive package is the same in all the tested compositions. The compositions of examples 2 and 3 additionally contain conventional thickener on the basis of PIB in order to meet the viscosity requirements of SAE 40.

The additive package contains a combination of additives, including anti-oxidant additives, anti-wear additives zinc-based, ashless dispersant, additive, lower pour point, corrosion inhibitor and passivator metal.

"Base oil I is a commercially available base oil group II with a kinematic viscosity at 100°C (ASTM D445) approximately 12.4 Centistokes (mm2·c-1). Base oil 1 commercially available from, for example, Chevron Products Company (San Ramon, CA, United States) (under the brand name "Chevron 600 R").

"Base oil 2" represents a base oil obtained by a Fischer-Tropsh ("GTL 8") with a kinematic viscosity at 100°C (ASTM D445) about 8 Centistokes (mm2·-1). Such GTL base oil is usually prepared in a manner described for example in WO 02/070631 included in the description by reference.

"Base oil 3 is a commercially available base oil group III with a kinematic viscosity at 100°C (ASTM D445) about 8 Centistokes (mm2·-1). Base oil 3 commercially available from, for example, SK Energy (Ulsan, Korea) (under the brand name "Yubase 8"),

"Surfactant 1" is an ashless detergent additive of the General formula (I) described above.

"The detergent 2 is a conventional sverhslojnoe salicylato a detergent with a TBN value of about 230.

"Detergent 3" is a conventional sverhslojnoe a detergent with a TBN value of about 150.

The compositions of examples 1-3 and examples 1-3 for comparison is obtained by mixing the base oils with the additive package and wash(them) additive(s) using the normal procedure of mixing lubricants.

Table 1
Component [wt.%]Example 1Example 2Example 3Will compare. example 1Will compare. example 2Will compare. example 3
Base oil 1 (group II)91- -919391
Base oil 2 (GTL 8)-84----
Base oil 3 (group III)--83---
The additive package555555
Detergent 1222--4
Detergent 2222-2-
Detergent 3--- 4--
Thickener-78---
TOTAL100100100100100-
Properties of the obtained lubricating compositions
Sulfated ash1[wt.%]0,470,470,470,480,500,02
The TBN value2[mg KOH/g]9994,55,59,0
Contribution to TBN not containing metals detergents2[%]6565650n.d.100
Kinematic viscosity at 100°C3[CCT]13,513,713,613,513,214,5
Kinematic viscosity at 40°C3[CCT]1279799124119143
The Sa content [wt.%]0,130,130,130,140,130
The content of Zn4[wt.%]0,030,030,030,030,030,03
The content In4[ppm]26026026000690
1In accordance with ASTM D 874
2With�publicly ASTM D 2896. Contribution to TBN not containing metals detergent calculate from TBN, measured to concentrate one additive, multiplied by the percentage added to lubricating compositions, and divided by the total TBN of the final lubricating composition.
3According to ASTM D 445
4In accordance with ASTM D 4951
n.d. = not determined

Oxidation stability

To show the properties of the oxidation stability of lubricating compositions of the present invention, measured according to the standard industrial method IP 48/97 (2004) except that they use the test time 48 hours (instead of 12 hours). The measured values of viscosity, conservation base number) and TAN (total acid number) and store the pH at the end of the test according to IP 48/97 (2004) indicated in table 2 below.

Compatibility with sealing material

To show the properties of compatibility with sealing material lubricating composition of the present invention, measured according to VDA method 673301/M 3273 (MAN). It is found that the magnitude limit of the tensile strength, elongation at break, hardness (shore A) and volume changes for examples 1-3 remain satisfactory within the M and M 3277 3477 (�chain in November 2005).

Table 2
Example 1Example 2Example 3Will compare. example 1Will compare. example 2Will compare. example 3
Viscosity at 40°C [cSt]159114126403522178
Viscosity at 100°C [cSt]161616353017
Saving base number [mg KOH/g]3,34,03,701,50
The value of TAN [mg KOH/g]1,91,42,36,38,75,2
Preservation pH 4,95,76,02,75,32,6

As can be seen from table 1, the present invention unexpectedly allows to obtain a suitable composition of motor oils with a low content of sulphate ash, and high TBN (TBN value is significantly more than the value for a commercially available oils for gas engines, as reflected in comparative examples 1 and 2).

Table 2 shows that the viscosity (at 40°C and 100°C), TAN and preserve the base number for the compositions of the present invention is greatly improved in comparison with the compositions of comparative example 1 (containing the same amount of detergent - see table 1) and comparative example 2. This is a clear indication of the desired properties of resistance to oxidation and preserve the base number for the compositions of the present invention.

It was also found (see table 2) that the compositions of examples 1-3 are superior to the composition of comparative example 1 in terms of pH; usually pH below 4 indicate oxidation.

When compared with the composition of comparative example 3 (C sulfated ash below 0.1 wt.%, namely, 0.02 wt.%) the compositions of examples 1-3 show significantly improved control� the value of TAN and preservation of the base number.

In addition, from table 2 it can be seen that the compositions of examples 1-3 are superior to the compositions of comparative examples 1 and 3 in terms of ultimate pH.

In addition, for the compositions of examples 1-3 found the desired properties of resistance to oxidative nitration.

Also the required values to the compatibility with sealing material obtained using the example 1 of the present invention.

In addition, it was found that the lubricating compositions of the present invention show the desired properties according to the cleanness of engines.

1. The lubricant composition includes a base oil and one or more additives, wherein the composition comprises a detergent, which is a product of the interaction of acidic organic compounds, boron compounds, and basic organic compounds of the General formula (I) below:

where a is 1 or 2; and where R1and R2represent an independently selected hydrocarbon group, provided that when a is 2, R1and R2selected independently, and have
the sulfated ash (ASTM D 874) at least 0.1 wt. % and at most 0.60 wt. %; and
- the total base number (TBN) (ASTM D 2896) of at least 8.0 mg KOH/g and a maximum of 15.0 mg KOH/g,
- calcium (ASTM D 4951) over 0,0 wt. % and at most 0.15 wt. %.

2. The lubricant composition according to claim 1, in which the value of TBN is at least 8.5 mg KOH/g.

3. The lubricant composition according to claim 1, in which the size of TBN less of 12.0 mg KOH/g.

4. The lubricant composition according to claims. 1-3, in which at least 50% of the TBN of the composition is ensured additives that do not contain metals.

5. The use of the lubricating composition according to any one of claims. 1-4 in a gas engine, to improve
- oxidation stability (in particular, when tested according to IP 48/97 (2004)) and
- preservation of the base number (in particular, when tested according to IP 48/97 (2004)).



 

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2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to a lubricant composition for use in a turbine engine, the composition containing: (i) 50-99 wt % base oil; (ii) 0.01-5 wt % ionic liquid and (iii) 0.01-10 wt % additives, wherein the freezing point is lower than -54°C, the flash point is higher than 246°C, and kinematic viscosity at 100°C is in the range of 4.9 mm2/s to 5.4 mm2/s. The present invention also relates to use of the lubricant composition to lubricate a turbine engine and to use of an ionic liquid (version).

EFFECT: obtaining a lubricant composition suitable for use in turbine engine oil and for reducing formation of deposits in the lubricant composition.

11 cl, 18 ex, 7 tbl

Grease // 2552989

FIELD: chemistry.

SUBSTANCE: invention relates to grease containing a mixture of two oils, one of which is industrial, lithium soap of 12-oxystearic acid, polytetrafluoroethylene and polysiloxane liquid, a suspension of copper stearate and acetate in castor oil, which additionally contains caprolactam oligomer-modified graphite with the ratio of components of 1:0.1:0.1:4-1:0.3:0.3:6, and the second oil is rape-seed oil, with the following ratio of components, wt %: lithium soap of 12-oxystearic acid - 9-19; polytetrafluoroethylene - 2-6; polysiloxane liquid - 16-27; suspension of modified copper stearate and acetate in castor oil in ratio of 1:0.1:0.1:4-1:0.3:0.3:6 - 1.5-6; rape-seed oil - 15-22; industrial oil - the balance.

EFFECT: obtaining grease having a high dropping point, low thermohardening, high tearing and welding load.

3 ex, 1 tbl

Lubricating rod // 2552111

FIELD: chemistry.

SUBSTANCE: invention relates to a lubricating rod, which consists of an envelope filled with a lubricating composition containing bitumen and graphite, wherein the lubricating composition further includes aqueous calcium sulphate, with the following ratio of components, wt %: bitumen 20-40, graphite 10-30, calcium sulphate to 100.

EFFECT: easy application of lubricating rod at subzero temperatures by changing the physical properties of the lubricating composition filling the envelope of the rod, owing to optimisation of the composition thereof.

1 tbl

FIELD: chemistry.

SUBSTANCE: present invention refers to a lubricant composition of synthetic turbine oil for steam turbine plants which contains a base consisting of a mixture of base components: polyalphaolefins having a viscosity of 5.6-6.1 mm2/s at 100°C and trimethylol propanol ester of carboxylic acids C6-C12 having a viscosity of 3.9-4.1 mm2/s at 100°C and a flash point of more than 240°C, in ratio of polyalphaolefins and polyester 55.0-60.0:35.0-40.0 wt % respectively, as well as a complex of multi-functional additives per 100% of the base, which contains the additives as follows: anti-wear additives - liquid ash-free thiophosphate 3-(diisobutyloxythiophosphoryl sulphanyl)-2-methyl propionic acid; liquid ash-free triphenylphosphothionates liquid - a mixture of triphenylthiophosphate and tert-butylphenyl derivatives; dicarboxylic acid dibutyl ester having a viscosity of 260 mm2/s at 100°C and 4,100 mm2/s at minus 40°C and a molecular weight of approximately 4,500 Ketjenlube 1,300; antioxidants - dioctyldiphenylamine; a high-molecular phenol additives - tetrakis methylene[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]methane, Irganox L-101; tris-di-tert-butylphenyl-phosphite; a metal deactivator - a tolutriazole derivative - a mixture of N-bis(2-ethylhexyl) aminomethyltolutriazol isomers; a corrosion inhibitor - alkylene-succinic acid half-ester having a viscosity of 26-40 mm2/s at 100°C and an anti-foam additive - a non-ionic aromatic and aliphatic hydrocarbon surfactant, Synative AC AMH2.

EFFECT: producing the synthetic turbine oil possessing the high antioxidative property, low hydroscopic property, demulsibility, corrosion resistance and anti-wear properties.

3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to microcapsules, containing borates of alkali metals, method of their obtaining, as well as to lubricating oils, used as transmission lubricating materials, containing said microcapsules as anti-scuffing and/or anti-wear additives. Microcapsules include core, containing one or more of borates of alkali metals, possibly hydrated, dispersed in one or more basic lubricating oils of mineral, synthetic or natural origin, and polymer envelope. Microcapsules are obtained by method of on-surface polymerisation.

EFFECT: invention makes it possible to obtain microcapsules, containing borates of alkali metals, which make it possible to avoid phenomenon of crystallisation of borates of alkali metals in presence of water, and therefore, makes it possible to use lubricating composition, containing thereof, use, for instance, in gearbox, which does not have sealing system.

24 cl, 1 tbl, 3 ex

FIELD: metallurgy.

SUBSTANCE: invention relates to product for hot pressure treatment of metals; the product is powder mixture of non-organic melting components, average size of particles is maximum 500 micron, mixture contains phosphate, borax and halide components. The phosphate components are selected from group of sodium or potassium phosphate, or their mixtures, the boron components are selected from group including boracic acid, boric anhydride, sodium metaborate and their mixtures; halide components are selected from group of alkali and/or alkali-earth metals, at that ratio between the phosphate and halide components is determined by the equation (1): 2.0 < Ph:H < 75, where Ph - total content of phosphate components, wt %; H - total content of halide components, wt %.

EFFECT: quality improvement of manufactured products, tool resistance and environment ecology improvement.

15 cl, 2 tbl

Rolling oils // 2536468

FIELD: chemistry.

SUBSTANCE: claimed invention relates to rolling oil which includes: from 50 to 90 wt %, with respect to the total weight of liquid for rolling oil, hydrocarbon base (a), including at least 50 wt % of isoparaffins, from 5 to 20 wt %, with respect to the total weight of rolling oil, of one or several friction modifiers (b), selected from fatty alcohols, fatty acids, fatty amines, esters of fatty acids or polyesters, obtained by esterification of copolymers of alpha-olefins and dibasic carboxylic acids with alcohols, from 0.5 to 0.7 wt %, with respect to the total weight of rolling oil, one or more anti-wear and/or antiscuff phosphorus-containing additives, selected from organophosphorus compounds, derivatives of phosphorous acid (c), with content of phosphorus in said oil, measured in accordance with NFT 60-106 standard, constituted at least 500 ppm. Claimed invention also relates to water emulsion, containing rolling oil, and to method of cold steel rolling (versions).

EFFECT: obtaining rolling oils, which when applied will increase efficiency of rolling mills and improve surface condition.

15 cl, 3 ex, 6 tbl, 2 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a solid lubricant material for abrasive processing, which contains stearic acid, molybdenum disulphide, additionally contains superdispersed powder of diatomite, soaked with mineral oil with surface-active substances and chemically-active additives and superdispersed powder of a diamond-graphite charge with the following component ratio, wt %: diatomite powder - 15 - 25; molybdenum disulphide 10-15; diamond-graphite charge powder - 0.1-1; stearic acid - the remaining part.

EFFECT: increase of the abrasion productivity and quality of abraded components, increased the resistance period of an abrasive instrument.

1 tbl

Antiwear additive // 2525404

FIELD: chemistry.

SUBSTANCE: present invention relates to an antiwear additive containing micelles based on iron oxide Fe3O4 grease molecules surrounded by oleic acid molecules, wherein the Fe3O4 micelle nucleus is doped with Co (II), with the following ratio of components, wt %: Co (II) - 6%, Fe3O4 - 94%.

EFFECT: improved tribotechnical and operational characteristics of the additive while minimising concentration of the additive in lubricant materials.

2 tbl, 1 dwg

Preservation grease // 2553001

FIELD: chemistry.

SUBSTANCE: preservation grease contains petroleum oil, a nitrogen-containing anticorrosion additive and a boron-containing additive, wherein the nitrogen-containing anticorrosion additive is a mixture of a condensation product of monoethanolamine, boric acid, pentaerythritol and oleic acid in molar ratio of 1.5:0.2:(0.2-0.4):1.5, respectively, and an azole compound, and the boron-containing additive is a reaction product of glycidyl methacrylate and boric acid in molar ratio of 0.5:1, with the following ratio of components, wt %: condensation product 30.0-50.0; azole compound 4.0-8.0; reaction product 4.0-8.0; petroleum oil up to 100.

EFFECT: improved preservation properties of the grease, prolonged protective effect, wide range of preservation greases.

2 cl, 2 tbl

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