DD200529A1 - CORROSION PROTECTION AGENTS FOR LUBRICANTS AND FUELS - Google Patents

Abstract

The invention relates to corrosion protection additives for lubricants and fuels for internal and external conservation of temporarily out of service, new or refurbished fully assembled engines, machinery and equipment. The aim of the invention is to provide low-viscosity corrosion protection additives that can be added before or during a brief interruption of the operation of fresh or used operating lubricants and fuels without reducing the deadlines and required for preservation temporary corrosion protection for the duration of decommissioning, storage and Ensure transport. The corrosion protection additives according to the invention consist of a combination of 10 to 80% by weight of an N-acyl-substituted sarcosine compound in the chain length range of C 10 to C 20 and 20 to 90% by weight of a fatty acid alkyl ester of fatty acids in the chain length range of C 10 to C 10 ind 20 and alkanols in the chain length range of C ind 1 to C ind 4. The corrosion protection additives obtained are new and used lubricants in a concentration of 0.1 to 10% by mass and diesel and carburetor fuels in a concentration of 0.001 to 5% by mass. admixed.

Description

23.71. 1981

Title of the invention

Anticorrosion additives for lubricants and fuels Field of application of the invention

The invention relates to anticorrosive additives for lubricants and fuels for interior and exterior egg preservation of temporarily out of service zu'setzenden, new or refurbished ready assembled engines, machines and. Devices. , '' _ [ .., · · · = · ': -. · · ··. - ..-; - .. ..

Characteristic of the known technical solutions

Bs is known lubricants for the purpose of the temporary "corrosion protection of metallic components, engines, machinery and equipment corrosion protection additives of various chemical composition, such as sulfonates, amines and derivatives thereof, organic phosphates and thiophosphates, alkylphenols, carboxylic acids and their reaction products and sulfur, nitrogen or phosphorus containing compounds, to be attached ·

It is also known to use eette, vaselines, paraffins and their solutions and emulsions or special preservative oils as temporary anticorrosion agents.

:.. put. Special preservative oils, for example, DD-PS describes. 68 051 an engine oil, the barium sulphonate and a mixture of a fatty acid ester of Eaffinationsfettsäuren and a Aminsals langkettiger. Alkylbenzenesulfonic acids were added, in particular for the

a 4

  · Internal preservation of internal combustion engines used and ensured good corrosion protection for the duration of storage and transport ^ must, however, be taken after taking up b & w ^ resumption of continuous operation

5 common operating oils are replaced *

In order to achieve a homogeneous solution of the additives in the base oil, the use of solubilizers in germinated edible oils is often "unavoidable", for example the corrosion products listed in BXKPS 123 201.

schutsöie due to the low oil solubility of the inhibitors as LösuLvgsvermittler höhermolekular · © alcohol ©. , DD-PS 104 319 und.DD ^P-1 S-122 102 describe nach.einfacher (Technology herstellbare'Mineralölkompositionen with corrosion protection properties show aenen _t. With the aid of Zusatses of acylsarcosines, zinc dithiophosphate and waite.-

a prolonged storage time without AussOhei-. However, such preservative oils are inadequate (resistance to temperature and oxidation and do not permit any residues).

20 free © combustion «

Due to the low thermal and oxidative resistance as well as the poor compatibility of the conventional corrosion protection oils with aert, operating oils results in a complex © preservation technology, "For internal" preservation of engines _$ machines and equipment must be put out of service units. as dismantled ,, _s freed from Bstriebsschmierstoff cleaned or gespültj then filled with a preservative oil and preserved by © inen preservation run. Before recommissioning • or after a short period of operation of the conserved aggregates, the preservative must be removed again ₉ whereupon the metal surfaces are to be cleaned again EU «. This is often a dismantling or "a sogenannter.Spuilauf with the BETX-iebsöl required then the engines, machinery or equipment with new plant oils have or" are filled fresh fuel _β ·

- 3 - Goal of the invention

23 194 7 4

The object of the invention is to provide anticorrosive additives for lubricants and fuels which may be added to fresh or used operating lubricants and fuels without, reduction of change periods before, during or during a brief interruption of operation, and temporarily for indoor and outdoor preservation Operation, new or refurbished prefabricated engines, machinery and equipment to provide temporary corrosion protection for the duration of decommissioning, storage and transport.

Explanation of the essence of the invention

The object of the invention is to provide anti-corrosion additives for engine and industrial oils as well as diesel and carburetor fuels which impart excellent anti-corrosive properties to the operating materials, have high thermal-oxidative stability and good compatibility with further lubricating and fuel additives, in the case of fuels, residue-free Allow combustion and cause a reduction in Verharzungsneigung * and oils without the use of solubilizers in high-viscosity base oils and can be used at "low temperatures.

It has surprisingly been found that corrosion protection additives for lubricants and fuels for internal and external preservation of temporarily put out of service, new or refurbished ready assembled engines, machines and equipment are obtained by a combination of '.:.

10 to 80, preferably 25 to 40% by mass of an N-acyl-substituted sarcosine compound in the chain length range from C ₁ Q to C ₂₀ and

'· 20 "to 90j preferably 60 to 75% by mass of a Fettsäurealky ester ester fatty acids in the ifettenlängenbereich from 0 / .Q" to Cgo and alkanols in the Eettenlangenbereich of C ^ to C ^ The corrosion protection additives obtained before, during or a short break of the operation inside or outside dm? Engines ^ Machines and equipment new and used lubricants in a concentration of O ₁ I to 10, preferably 3 to 5 mass% _? and diesel and carburetor fuels in a concentration of 0 _g 001 to 5? "

10 preferably 1 $ 5 to 3 Mas se '-% _s admixed'.

Embodiment ©

example 1

33% by weight of oleoyl sarcosine and

67% by mass of a fatty acid methyl ester of L = acid in the chain length range of G ^ q to C ^ q are mixed with each other 3% by mass of the low-viscosity liquid obtained are added to an engine oil, which is already in an engine as used oil The engine is about 10 minutes in the running or preserving

operated, so that the anticorrosive additive in the engine oil is dissolved homogeneously and the now resulting "preservative oil comes into contact with all engine inner parts" After interior preservation, the engine can be turned off »When restarting the engine is provided with the Korrosioasschutzzusatz © motor oil continues as Operating oil and the intended oil change

30 days usable «.

Example 2

25 mass% of stearylarsarcosine and

75% by mass of a fatty acid isobutyl ester of fatty acid mixtures in the chain length range. from G * q to Öoq are mulled together 1.5% by mass of the obtained

23194 7 4

low-viscosity liquid is added to a diesel fuel-filled fuel tank with gentle stirring. With the homogenized fuel corrosion additive additive mixture, a diesel engine is idled or conserved for about 10 minutes, with the now anti-corrosive fuel wetting and preserving all parts of the fuel system. · The engine can then be stopped. When restarting the diesel engine, a fuel change is not required, the preservative mixture can be used as a working fuel.

Based on the quality characteristics of motor oils and fuels listed in Tables 1 and 2, which

"15 ³⁰ ^ A ^ ⁰²¹ corrosion protection additive and according to the invention. On the other hand with the individual components of this mixture were added, the synergistic effect of the proposed combination is apparent. The results contained in Tables 3 and 4 illustrate the advantageous properties of the anticorrosive additives of the invention in comparison with corresponding The proposed combination provides excellent corrosion protection effectiveness in fresh and used engine and industrial oils as well as diesel and carburetor fuels, has high thermal-oxidative stability and good compatibility with other lubricating and fuel additive s The additives according to the invention can be used without solubilizers and, owing to their low viscosity, can also be used without problems in highly viscous oils and at low temperatures Combination of the operating agent is carried out by mixing 'outside' or inside the motors, machines and equipment during operation, with no need to remove used operating fluids or clean or disassemble the units. The equipment contained in the equipment.

Maessen additives ensure the implementation ¥ on Fonktionsprüfungen and decrease running and a Langze ^ corrosion protection for the internal parts after decommissioning for the period is storage and transportation _s in Eeserve- machines, and intermittent operations with the help of the additives contained in fuels is a corrosion protection of tanks j lines and injection or carburettor systems received »

When operating the diesel engines with a diesel fuel-corrosion additive addition occurs a reduction

the smoke density in the lower load range of up to 10 %. An injection pump and elements preserved for the purpose of storage with the specified mixture have an effect. improvement of the ease of movement of the elements as well as a reduction of resinification after a certain storage time *

Table 1: Corrosion protection properties of inhibited diesel engine oils

The corrosion protection properties of the inhibited diesel engine oils were determined after the corrosion test with 0.1% hydrobromic acid in accordance with TGL 21 148, Bl. 04.

Name of the inhibitor

Concentration in diesel engine oil

Corrosion level of inhibited diesel engine oils

without

Fatty acid methyl esters of fatty acid mixtures in the chain length range / from 0 _Λ γκ to ~

oleoylsarcosine

Corrosion protection additive according to the solution according to the invention in the composition according to Example 1

10% by mass

2% by mass 1% by mass

1.5 mass%

1.6 mass%

1.7% by mass

3% by mass

e 4. R 3 R 3 R 3 R 2 e 1 R 0 / R 1

R 0 / R 1

Table 2: Conservation properties of inhibited fuels

The preservative properties of the inhibited fuels after the condensation. Based on TGL 15 621 in the period of 8 h / Sag on cast iron determined «The figures refer to % Sost of the total area» '

.Fuel. Inhibitor Concentration Temperature: 31 - 3 ° 0 continue at 35-2 ⁰ G. "t! Day 2. gage 5 Tin ?, ® 10 (Pageg

50 50 , 50 50 40 50 50 60 25 50 ? 5 50 • I ^ 90 0 2 6 8th 0 0 0 0

Diesel. without '. - 70 83 85 ^ - - - ·

fuel '·

"" Petaltic Acid 10 Mass © - ^ 60 85 - '- - -

methyisster. ' ^:

¹¹ . Oleoylsarcosine O ₉ 5% by mass .0 OOO 1-10 65 ^f? 'Anti-corrosion

Bus set according to I ₂₁ 5 Ground jS 0.0. OOO 1 8

example 1

Carburetor _ω1 _ _ω inn · ^

fuel. ^omiss " ^l0 ° ™ *" -. ·· - -. - \

"Fatty acids * © thyl? R _n " »· ''

ester

"Oleoyl sarcosine 3 mass jS '40 50 50 60 60' 65 70

"1 mass%

"" .0.5 mass%.

"Corrosion protection

Bus at ζ according to 1 _S 5 mass-jS 0 2 6 8 20 40 40

example 1

^{t! s} ' 3% by mass 0 0 0 0 0 2 2

Table 31 Comparison of the quality of diesel fuels with preservative properties

The preservative properties of the investigated diesel fuels were determined after the sweat water test on the basis of TGL 15 621 in the time of 8 h / day on gray cast iron. "The figures refer to % rust of the total area.

Investigated product

Temperature: 31-3 ° C Continue at 35 + 2 1 day 2 days 5 days 10 days 2 days 5 Tase

Diesel fuel without additive

Diesel fuel, added with 1.5% by weight of the corrosion protection additive according to the invention in the composition according to Example 1

Preservation fuel of the prior art

83

78

Table 4; Quality comparison of motor oils with preservative properties

The preservation se roperties of the tested engine oils were prepared by the Schwitzwassextest based 'on DIIT 51359 "at a temperature of 50 · ⁰ C determined with an air flow rate of 875 + 25 l / h» ·

Examined product

h .43 h 96 h 168 h 200 h 264 h

Diesel engine oil without corrosion inhibitor S1 / B2 -

E1 / E2 '-

Preservative diesel oil © of the prior art

Diesel engine oils added with 3% by mass of the inventive corrosion protection additive in the composition of Example 1

Yiertakt gasoline engine oil with corrosion inhibitor of the state.der technology.

Yiertakt-Ottoinotoren-oil ₉ added with 3% by mass of the corrosion protection according to the invention in the Zusasimansetaung according to Example 1

International warranty on piston engine corrosion protection oils E 2 ' R 4

S 2 S 4

EO E 2

H 1 R1 / H2

E 2 R 3 / R 4 - · · B 1 / E 2

R 0 / E 1 -. -E 0 / R 1

Claims (3)

1. Corrosion protection additives for lubricants and fuels, consisting of metal, phosphorus and sulfur. free organic synthetic compounds, characterized in that they, based on the finished product, from From 10 to 80% by weight of a .N-acyl-substituted sarcosine compound in the chain length range from C 1 to G 2 O to 90% by weight of a fatty acid allyl ester of fatty acids in the chain length range of CLq.about.G ^ q and alkanols in the E-length range of C, - to C ^ exist. 2. corrosion protection additives according to item 1, characterized in that, based on the finished product, from .25 to 40 Mas se-% of an N-acyl-substituted sarcosine 'in the chain length range of C, q to G2Q and 60 to 75 Mass% of a fatty acid alkyl ester of fatty acids in the chain length range of C ^ q to C ₂ Q and alkanols in the chain length range of Gy. to be .0 ^ κ be. 3 · Anti-corrosion additives according to items 1 and 2, characterized in that before and during or during a brief interruption of operation inside or outside the engines, machines and equipment new and used lubricants in a concentration of 0.1 to 10% by mass and diesel and carburetor fuels are admixed in a concentration of 0.001 to 5% by mass and ensure a continuous operation of the equipment without reducing the oil change periods and without fuel change.