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High-temperature lubricants

A high-temperature, high-temperature oil technology, used in high-temperature greases for continuous use temperatures up to 250 ° C, in the field of oils and greases, can solve problems such as long functional duration

Active Publication Date: 2017-11-28
KLUBER LUBRICATION MUNCHEN GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is synonymous with a low load on the bearing and leads to a longer functional duration of the bearing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 2

[0067] Preparation of high temperature oil according to the invention

[0068] The long-chain ester or aliphatically substituted naphthalene is preset in a stirred boiler. At 100° C., polyisobutene and optionally another oil are added thereto under stirring. Subsequently, the mixture was stirred for 1 h in order to obtain a homogeneous mixture. The antiwear additives and antioxidants were added to the boiler at 60°C with stirring. After about 1 hour, the finished oil can be filled into the provided containers.

[0069] Composition of high temperature oil:

[0070] Table 1

[0071]

[0072] Table 2

[0073]

[0074] Base data for the oil examples can be derived from Table 3.

[0075] table 3

[0076]

[0077] In addition, the friction properties of the oil were measured in SRV and the evaporative losses in dynamic TGA according to DIN 51834-2. The results are shown in Tables 4 and 5 and in figure 1 and 2 shown in the graph.

[0078] Table 4

[0079]

[008...

Embodiment 3 to 8

[0084] Preparation of high temperature grease according to the invention

[0085] The base oil is preset in the stirred boiler. Polyisobutene and optionally another oil and thickener are added thereto with stirring at 100°C.

[0086] The thickener is produced by in situ reaction of the reactants employed in the base oil. Subsequently, the mixture was heated to 150°C to 210°C, stirred for several hours and cooled again. During cooling, at about 60°C, the required antiwear additives, antioxidants and anticorrosion additives are added thereto. A homogeneous mixture of greases is obtained by a final homogenization step via rollers, colloid mill or Gaulin.

[0087] The composition of the high temperature grease is shown in Table 6.

[0088] Table 6

[0089]

[0090]

Embodiment 3

[0092] Example 3: LiOH, 12-hydroxystearic acid, azelaic acid

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PUM

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Abstract

The invention relates to a food-compatible high-temperature lubricant, in particular a high-temperature oil and a high-temperature grease, comprising the following components: a) at least one oil selected from a trimellitic acid ester or a mixture of various trimellitic acid esters, alkyl aromates, preferably an aliphatically substituted naphthalene or estolide; b) a hydrogenated or fully hydrogenated polyisobutylene or a mixture of hydrogenated or fully hydrogenated polyisobutylene and; c) additives, individually or in combination. In the case of the high-temperature grease, a thickening agent is added.

Description

technical field [0001] The present invention relates to high-temperature lubricants, especially oils and greases, based on aromatic esters, such as trimellitates and mixtures of different trimellitates, alkylaromatics, long-chain esters (Estoliden) and fully hydrogenated or hydrogenated of polyisobutylene or mixtures thereof, thickener. The invention also relates to the use of the high temperature grease for continuous use temperatures up to 250°C. Background technique [0002] In addition to the lubricating effect, the lubricants must fulfill a number of additional tasks: they must cool, reduce friction, wear and force transmission, prevent corrosion and at the same time have a sealing effect. In addition, high temperature grease should be low noise. [0003] Conventional lubricants are unsuitable for high temperature applications because they are destroyed at high temperatures, eg through oxidation and / or thermal decomposition and polymerization reactions and their lubri...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10M169/04C10N30/02C10N30/04C10N30/06C10N30/08C10N40/02C10N40/25C10N50/10
CPCC10M169/00C10M169/044C10M2203/065C10M2201/1056C10M2205/0265C10M2205/026C10M2201/1036C10M2201/1026C10M2207/301C10M2207/2855C10M2207/1285C10M2207/1276C10M2219/0445C10M2215/1026C10M2213/0626C10N2010/06C10N2010/02C10N2010/04C10N2030/04C10N2030/08C10N2030/06C10N2030/02C10N2030/76C10N2040/02C10N2040/14C10N2040/38C10N2060/02C10N2050/10C10M105/06C10M105/36C10M107/08C10M109/00C10M111/04C10M111/06C10M169/04C10M2201/0626C10M2207/023C10M2215/14C10M2215/26
Inventor K.埃格斯德费尔T.基尔陶S.格伦代S.泽迈尔
Owner KLUBER LUBRICATION MUNCHEN GMBH & CO KG
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