CS259940B1 - Universal lubricating oil for lubrication of moving parts of machines - Google Patents

Abstract

The solution concerns a universal lubricating oil for lubricating moving parts of textile machines, which is a mixture of polypropylene oil (a product of polypropylene polymerization, consisting of a mixture of hydrocarbons from C6 to C90 with a content of 1 to 1.5 double bonds) with a kinematic viscosity of 4.2 to 810 mm2/s at 40°C and deeply refined petroleum oil (so-called "white" oil) with a kinematic viscosity of 1.8 to 50 mm2/s at 40°C in such a ratio of both components that the resulting kinematic viscosity of the mixture ranges from 2.0 to 800 mm2/s at 40°C, which corresponds to a polypropylene oil content in the mixture of 5.0 to 95.0% by weight. The oil is washable, light-resistant, oxidation-resistant, physiologically harmless, light-colored, with increased adhesion to metal surfaces and thus reduced splashing, and has very good anti-wear properties. Due to the oxidation stability of the oil, even at high temperatures of 100 to 170 °C, it does not form deposits on metal parts and is therefore very suitable for high-speed machines. The advantage is the possibility of creating oils with the necessary properties in a wide range of kinematic viscosities. By adding a low-temperature antioxidant, a high-temperature antioxidant with anti-wear effect and a rust inhibitor, its oxidation stability, anti-wear and anti-corrosion properties can be further increased. It is intended for lubricating moving parts of textile machines. It can be used for the same purpose in the shoemaking, leather and food industries.

Description

The invention relates to a universal lubricating oil intended for lubricating moving parts of textile machines, characterized in that it is a mixture of polypropylene oil and deeply refined petroleum oil with specified properties.

Lubricating oils are used to lubricate moving parts of textile machines in spinning mills, weaving mills, knitting mills and other textile operations, and they are required to have certain specific properties. These lubricating oils should be light to colorless, have good adhesion to the lubricated surfaces of the moving parts of the machines, and thus should splash as little as possible, especially in cases where the lubricated parts of the machine can be or are in direct contact with the processed textile material.

They should have good thermo-oxidative stability so that they do not form a large amount of deposits that clog the lubricated surface and cause mechanical failures of machines. Oil sprayed onto the surface of textiles must be easily washable with water with an emulsifier. The oil should have good lubricity and corrosion protection.

Highly refined petroleum oils are used for lubricating textile machines today. To improve adhesion to lubricated surfaces and reduce splashing, they may be equipped with the addition of polymers, e.g. polyisobutylene, and often contain other additives: antioxidants, rust inhibitors, lubricating additives, additives that suppress creep, e.g. fatty acid soaps, or those that enable oil washability, surfactants or sulfonates, monooleoglycerates, etc.

We have found that a quality oil for lubricating parts of textile machines is a mixture of polypropylene oil (a product of propylene polymerization, consisting of a mixture of hydrocarbons from Cg Cgg ^with a content of 1 to 1.5 double bonds) with a kinematic viscosity of 4.2 to 810 nm?/s at 40 °C and deeply refined petroleum oil (so-called white oil) with a kinematic viscosity of 1.8 to 50 mm^/s at 40 °C in such a ratio of both components that the resulting kinematic viscosity of the mixture ranges from 2.0 to 800 min/s at 40 °C. Such viscosities correspond to mixtures of both oils, in which the content of polypropylene oil with the specified composition and properties is 5.0 to 95.0% by weight.

Improvement of the thermal-oxidative stability of such a polysynthetic oil is achieved by adding a low-temperature antioxidant of the shielded phenol type, preferably 2,6-tert.butyl 4-methylphenol in an amount of 0.05 to 0.5% by weight.

To improve anti-wear properties, it is suitable to add 0.1 to 2.0% by weight of zinc salt of zinc dialkyldithiophosphate with i-C^ and i-Cg alkyls or its mixture with zinc dialkyldithiophosphate with i- or n-C^ to Cg alkyls.

The protective ability of the oil against corrosion (rusting) can be achieved by adding 0.01 to 0.5% by weight of a corrosion (rusting) inhibitor, preferably calcium or barium alkylarylsulfonate or low molecular weight alkenylmaleic anhydride with alkyls up to ^C 25. The following verification tests were used to measure the useful properties of the universal lubricating oil according to the invention:

a) Determination of oxidation stability according to ČSN 65 6255

The oil sample is subjected to oxidative aging at a temperature of 100 °C, at a flow rate of 5 liters of air per hour and in the presence of a copper catalyst, for 72 hours.

The measure of oxidation stability is the amount of oxidation deposits determined in n-heptane and expressed in %.

b) Determination of anti-wear properties at high temperatures of 150 °C

Anti-wear properties were determined on a four-ball device, using the Uniwave test. At a constant load of 100 N, temperature of 150°C, speed of 180 rpm, the test time was 30 minutes.

The criterion was the abrasion diameter in mm.

c) Determination of anti-wear capabilities under high loads

Anti-wear properties were determined on a four-ball device, using a test according to IP 239/82 at a constant load of 400 N, temperature of 75 °C, speed of 1,200/min., test duration was 1 hour.

The criterion was the abrasion diameter in mm.

A comparison of the properties of the blended oils according to the invention was carried out with oils specifically designed for textile machines.

Textol 9815/2 ISO VG 32

Mobil Etna SS Light ISO VG 32

Textile machine oils imported to us for foreign textile machines are considered by users to be of top quality.

Angle 4 ISO VG 46

Oil indicated by knitting machine manufacturers as very suitable for newly developed machines. Due to lack of sample, oxidation stability test could not be performed.

According to manufacturers, the oils are made on the basis of deeply refined petroleum oils and additives.

The following blended oils were prepared and tested in accordance with the invention. All compositions in the following examples are given in weight percent.

Example 1

K 300 + A2 ISO VG 46 - oil composed of 50% by weight of polypropylene oil k 300 with a kinematic viscosity of 98.6 mm ² /s at 40 °C and 50% by weight of deeply refined petroleum oil, here white heavy vaseline oil A2 with a kinematic viscosity of 18.6 mm ² /s at 40 °C and an extinction number of 0.2. The kinematic viscosity of the resulting oil was 46.3 mm ² /s at 40 °C.

Example 2

K 300 + A2 ISO VG 32 - oil composed of 30% by weight of polypropylene oil K 300 and 70% by weight of deeply refined oil A2 of the quality as in example 1. The kinematic viscosity of the resulting oil was 34.58 mm ² /s at 40 °C.

Example3

K 300 + A2 ISO VG 22 - oil composed of 5 wt. % polypropylene oil K 300 and 95 wt. % deeply refined oil A2 as in examples 1 and 2. The resulting kinematic viscosity of the oil was 23.56 mm/s at 40 °C.

Example 4

K 300 + A2 + 0.01% by weight 4K ISO VG 32 - oil as in example 2 with the addition of 0.01% by weight of antioxidant 4K, containing 2,6-tert.butyl 4-methylphenol as the active ingredient. Oil with increased oxidation stability.

Example 5

K 300 + A2 + 0.5% by weight MOB ISO VG 22 - oil as in example 3 with the addition of 0.5% by weight.

Multadite OB, a mixture of zinc dialkyldithiophosphate with iC ₄ and i-Οθ alkyls ^with zinc dialkyldithiophosphate with nC ₅ and n-Cg alkyls. Oil with increased anti-wear properties and load-bearing capacity of the lubricating film.

Example6

K 300 + A2 + 0.01% by weight 4K + 0.5% by weight MOB + 0.05% by weight Oloa 233A ISO VG 46 - oil as in example 1, with the addition of antioxidant 4X as in example 4, with the addition of Multadite OB as in example 5 and with the addition of 0.05% by weight of the rust inhibitor Oloa 233A, containing as an active ingredient low molecular weight alkenylmaleic anhydride with alkyls up to C ₂ g.

Oil with increased oxidation stability, anti-wear properties and corrosion protection.

Example 7

K 300 + A2 ISO VG 100 - oil composed of 95 wt. % polypropylene oil K 300 and 5 wt. % deeply refined petroleum oil A2 as in examples 1 and 2. The resulting kinematic viscosity of the oil was 92.3 mm^/s at 40 °C.

Example 8

K 1,000 + A2 ISO VG 100 - oil composed of 65% by weight of polypropylene oil K 1,000 with a kinematic viscosity of 224.2 mm^/s at 40 °C and 35% by weight of deeply refined oil 2

A2 in the quality as in example 1. The resulting kinematic viscosity of the oil was 98.6 mm/s at 40 °C.

Example 9

K 1,000 + A2 ISO VG 220 - oil composed of 95% by weight of polypropylene oil K 1,000 and 5% by weight of deeply refined oil A2 of the quality as in example 8. The resulting kinematic viscosity of the oil was 210.3 mm^/s at 40 °C.

Example 10

Z 800 + A2 ISO VG 680 - oil composed of 95% by weight of polypropylene oil Z 800 with a kinematic viscosity of 802.12 mm^/s at 40 °C and 5% by weight of deeply refined oil A2 of the quality as in example 1. The resulting kinematic viscosity of the oil was 614.2 mm^/s at 40 °C.

The possibility of creating oils in a wide range of kinematic viscosities has been documented with examples.

Results of tests of oxidation stability and anti-wear properties of blended oils according to the invention at high temperatures of 100 and 150 °C.

Oxidation stability test according to ČSN 65 6255 (see paragraph a)

Determination of the amount of oxidation deposits in n-heptane in % by weight.

Pletol PX ISO VG 22 2.97

Textol 9815/2 ISO VG 32 0.008

Mobile Etna SS Light ISO VG 32 0.46

Angle 4 ISO VG 46

K 300 + A2 ISO VG 46 according to example 1 0.01

K 300 + A2 4K ISO VG 32 according to example 4 0.004

K 300 + A2 + 4K + MOB + 0 233A ISO VG 46 according to example 6 0.03

Determination of anti-wear properties at 150 °C (see paragraph b)

ISO VG Wear diameter in /mm/

Uniwave Míst oil 500 (catalog value) 46 0.380 Pleto PX 22 0.635 Textol 9815/2 32 0.405 Mobil Etna SS Light 32 0.382 Ange 4 46 0.582 Oil according to example 1 46 0.380 Oil according to example 1 at 170°C 46 0.378 Oil according to example 5 22 0.370

Determination of anti-wear capabilities under high loads (see paragraph c)

ISO VG Wear diameter in /mm/

Pleto PX 22 0.738 Textol 9815/2 32 ___ Mobil Etna SS Light 32 0.427 Ange 4 46 0.695 Oil according to example 1 46 0.709 Oil according to example 5 22 0.497 Oil according to example 6 46 0.430 Oil according to example 7 100 0.720 Oil according to example 9 220 0.735 Oil according to example 10 680 0.665

All oils prepared according to examples 1 to 10 were tested for washability, which was necessary especially for oils with additives. Washability was very good.

The oils were further evaluated in terms of splashing in comparison with pure petroleum oils or foreign-made oils for textile machines, so that oils of the same viscosity class were always evaluated.

The test was performed on a rotating disc and the amount of oil was evaluated in %, relative to the basic applied amount.

Tested oils: R 874 W - base oil used for the production of engine oils.

R 874 W + J5 - a mixture of base oil and bearing oil J5 to achieve the same kinematic viscosity as the oil according to example 7

Determination of resistance to splashing on a rotating disc

Angel

ISO VG Quantity of oil in % by example 9 220 15.3 W 220 12.6 by example 7 100 8.7 , W + J5 100 7.4 by example 1 46 7.2 4 46 6.1 by example 2 32 4.8 . Etna SS Light 32 3.4

The increased adhesion of blended oils allows for reduced lubricating oil consumption.

The universal lubricating oil according to the invention is intended for lubricating moving parts of textile machines.

259940 ⁰ machines. It can be used for the same purpose in the shoe, leather and food industries.

Claims (4)

SUBJECT OF THE INVENTION Universal lubricating oil for lubricating moving parts of textile machines, characterized in that it is a blend of polypropylene oil composed of a mixture of hydrocarbons from Cg to Cgg containing 1 to 1.5 double bonds with a kinematic viscosity of 4.2 to 810 mm ^ / s at 40 ° C and deeply refined petroleum oil, the so-called white oil, with a kinematic viscosity of 1.8 to 50 mm ^ / s at 40 ° C in a ratio of both components so that the resulting kinematic viscosity of the mixture is in the range of 2.0 to 50 800 mm @ 2 / sec at 40 DEG C., which corresponds to a content of polypropylene oil in the mixture of 5.0 to 95.0% by weight. 2. The oil of claim 1, further comprising 0.05 to 0.5 wt. a low-temperature shielded phenol-type antioxidant, preferably 2,6-di-tert. butyl 4-methylphenol. Oil according to claim 1 or 2, characterized in that it additionally contains 0.1 to 2.0 wt. dialkylditiofosfátu zinc alkyls with n- or iC ^ to C ^ g, preferably dialkylditiofosfátu zinc alkyls with IC and i-Cg, or mixtures thereof with a zinc alkyls dialkylditiofosfátem i- or n C ₃ to Cg. 4. Oil according to claim 1 or 2 or 3, characterized in that it additionally contains 0.01 to 0.5% by weight. a rust inhibitor, preferably calcium or barium alkylarylsulfonate or a low molecular weight alkyl maleate anhydride with alkyls up to C ₂₅ ;