DE1594630A1 - lubricant - Google Patents

Description

S oh si he m itte 1 Increasingly, demands the technology lubricant with superior properties. The basis of the lubricating oils and greases has so far been almost exclusively natural crude oil, which has been improved to the limit of its performance by a wide variety of refining processes and by adding so-called additives. These base oils, which are ideally suited as lubricants thanks to their chemical inertia and their good behavior towards additives, no longer meet modern requirements. In particular at low temperatures, for example -30oC at which listed on mineral oils bauter unusable.

It has now been found that oily esters of at least 6 carbon atoms containing diols with - preferably comparable chain - monocarboxylic acids or esters of oily Konoalkoholen having at least 6 carbon atoms and dicarboxylic acids containing 19 carbon atoms in admixture with natural and / - or synthetic hydrocarbon oils are excellent lubricants.

As a natural hydrocarbon oils are all mineral oils sufficient quality, especially deep faltering, naphthenbasisehe oils or gemisehtbasisehe oils, some of which are freed by refining the bulk of their paraffinisohen arrival, - in question. Polymerization products of ethylene and their modification products obtained by hydrogenation, isomerization or aromatization may be mentioned as synthetic hydrocarbons. The composition of the new Sohaierstoffe can wendungeart depending on the advantages within the three components Bineralöl, synthetic HU oil and Esteröl vary widely, the oils can also each after Verwendungaaweok auszuwählen- the additive, for example, resistance to oxidation, with Diepereante and Detergents, are treated with additives to improve the Viakositäteindex as Polyaorylsäureestern or their derivative with additives to increase the Druekaufnahmevermögena etc. the additives should be selected such that it comparable with the respective components applied to the base oil are träglich, the novel Lubricants are characterized by good behavior. low temperatures as well as a favorable temperature behavior and do not attack sealing materials made of natural or synthetic rubbers such as Simmerrings . In addition to serving, the inventive application of the abovementioned esters brings about a further advance. This enter oils disintegrate in contrast Eu lower Dioarbon acid Tern as adipates and Ssbazaten, not-with precipitation of solid products and only thanks to this Eigenaohaften a.8 .. as a component for motor oils comparable reversible.

Example 1 A synthetic engine oil from the components 41.576 Honadeaylenäthyloapronäureeeter 1o96 KW-oil (13v703 / 50) 4o96 naphthenbasisohes äineral8l (3,50W50) 476 Polyaorylat _ 4,576 engine oil additive built Notorenöl_hat the following properties: Pour point -57 ° C viscosity at 9900 8.5503t Cloud point d Via viscosity index 131.5 Flash point 21000 The good cold resistance as well as the high viscosity index make the 01 suitable for animal use in arctic conditions. It delivers excellent engine values both in Otto Votor and in the Diesel Notor and can therefore be marked as * Rinheits-Liehrbereichstll for Diesel and Otto Uotor " . The composition of the ilotereal can vary within wide limits depending on the Verwaödnngssweek, but should form a substantial part of their the ester oil .

2. Gear oil An excellent gear oil contains mm sB, from the following components: A795% synthetic hydrocarbon oil (13.70E, / 58) 22.5 nonadecylene ethyl caproic acid ester 3.04 poly aorylate 6, o% gear oil additive base oil has the following key figures: Stoekpunktt -440C Viscosity at 50 ° C: 75.203t Yakosity Index 121 "" 9800: 159508t Flash point 24500 In gearboxes, it shows a high degree of wear resistance, low foaming tendency, is resistant to thermal and oxidative influences and prevents corrosion and sludge formation. It is suitable thanks to its good Tieftenperatur-Eigensehaften and its good viscosity-temperature behavior especially for use at low outdoor temperatures, without the petitioner oil content can not be made because of the 01 Unlönliahkeit of Getriebeöladditivea. The proportion of ester oil in the "base oil" also tends to significantly increase the soaking effect due to its polar groups.

3.) Automatio Trane®iesion Pluid A for lubricating autoaatisohen transmissions as they are increasingly being used in motor vehicles suitable gear oil can Z.8. be built up in the following way: 56.4% naphthenic base oil (, 3.603 / 50) 37.6% Hezanediolisononansäurediester 4, o% polyacrylate 2% gear bladditive.

En has the following proprietary liability Pour point: -50.5 ° 0 Viscosity at 50 ° 0 : 33.8 eSt Bds 123 "" 9800 s 8.4 cts Plammpuntts 206 ° C The low pour point night suitable for this 01 Einests at low temperatures. It shows good wearability with low durability, which in particular reduces the energy loss in the automatic gearbox, low foaming tendency, low attack on solid materials and has good resistance to thermal and oxidative influences. Its tendency to corrode against copper and steel is low.

On. Oils constructed in this way can, in addition to use in transmissions, also be used in combination for transmissions and hydraulics, as required in automatic transmissions , as well as in hydraulic systems alone . Due to their ester oil content, they show a high lubricating effect and can therefore ih their viscosity. Set lower no than normal gear oils, which, in addition to the low pour point, enables starting at low temperatures

Claims (1)

Patent application: @ rr @ r @@ rra @ 3chaiermittel, containing synthetic breaker oils from diols with at least 6 carbon atoms and - preferably branched z monocarboxylic acids, or from conoalcohols with at least 6 carbon atoms and 19 carbon atoms containing dioarboxylic acids, as well as aatUrliohe and / or synthetic, preferably deeply concentrated, hydrocarbon oils.