High temperature lubricant compositions

a technology of lubricant composition and high temperature, applied in the direction of lubricant composition, liquid carbonaceous fuel, fuel, etc., can solve the problems of increasing the viscosity of lubricant, reducing the mobility of lubricant liquid, and formation of deposits

Inactive Publication Date: 2007-08-02
ZSCHIMMER & SCHWARZ INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process normally results in an increased lubricant viscosity.
Where the lubricant is exposed to the atmosphere, and especially in thin films, an increase in lubricant viscosity reduces the mobility of the lubricant liquid, accelerates oxidation, and leads to the formation of deposits.
Such breakdown may also result in loss of lubricant fluid and/or the production of excessive vapors and/or smoke, or ineffective lubrication.
This, in turn, can lead to mechanical breakdown, higher energy consumption, reduced cleanliness, poorer product quality, and higher occupational exposure to volatile organic compounds.
This, in turn, may lead to poorer lubrication, higher energy consumption, and potential production stoppages due to the need to remove deposits from the metal surfaces.
One drawback of metal protecting additives, however, is that they can reduce stability of the base oils once added.
Antioxidants protect a base oil in a lubricant composition and/or other additives therein from attack by atmospheric oxygen, a harmful process also known as oxidation, which produces unwanted free rad

Method used

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  • High temperature lubricant compositions

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0037]The lubricant composition trimethylolpropane tri-5,7,7-trimethyl-2-(1,3,3-trimethylbutyl)-octanoate (TMPTTBO) was prepared by combining the following materials of Table 1 in a batch reactor fitted with a mechanical stirrer, inert gas sparge, vapor column, condenser, and distillate receiver. Pressure in the reactor was controlled by a vacuum pump that was attached to the reactor.

TABLE 1Parts Per 100Moles Per 100ComponentPartsPartsTrimethylolpropane13.60.1015,7,7-trimethyl-2-(1,3,3-trimethylbutyl)-86.40.304octanoic acid

[0038]About 0.10 parts per 100 parts tetrabutyltitanate was added to the reaction mixture, and the mixture was heated to from about 180° C. to about 250° C. Pressure was slowly reduced until sufficient conversion was obtained. The crude ester was further purified by steam distillation and filtration. The result was a yellow viscous liquid possessing the following properties shown in Table 2:

TABLE 2Property, UnitsTest MethodResultTotal Acid Number, mg KOH / gASTM D-9...

example 2

[0039]The lubricant composition Trimethylolpropane / Pentaerythritol 5,7,7-trimethyl-2-(1,3,3-trimethylbutyl)-octanoate (TMPPETTBO) was prepared by combining the following materials in Table 3 in a batch reactor fitted with a mechanical stirrer, inert gas sparge, vapor column, condenser, and distillate receiver. Pressure in the reactor was controlled by a vacuum pump that was attached to the reactor.

TABLE 3Parts Per 100Moles PerComponentParts100 PartsTrimethylolpropane9.50.071Pentaerythritol3.20.0245,7,7-trimethyl-2-(1,3,3-trimethylbutyl)-87.30.307octanoic acid

[0040]About 0.10 parts per 100 parts tetrabutyltitanate was added to the reaction mixture, and the mixture was heated to from about 180° C. to about 250° C. The pressure was slowly reduced until sufficient conversion was obtained. The crude ester was further purified by steam distillation and filtration. The result was a yellow viscous liquid possessing the following properties listed in Table 4:

TABLE 4Property, UnitsTest Method...

example 3

[0041]A lubricant base oil was prepared by combining the following ingredients of Table 5:

TABLE 5ComponentParts Per 100 PartsTMPTTBO50Synthetic Ester50

[0042]The result was a yellow viscous liquid possessing the following properties shown in Table 6:

TABLE 6Property, UnitsTest MethodResultTotal Acid Number, mg KOH / gASTM D-9720.17Hydroxyl Number, mg KOH / gASTM D-19574.5Kinematic Viscosity @ 40° C., cStASTM D-445401.4Kinematic Viscosity @ 100° C., cStASTM D-44520.0Viscosity IndexASTM D-227035Flash Point (C.O.C), ° C.ASTM D-92270Pour Point, ° C.ASTM D-97−15Evaporation Loss, %58.7Deposits After Heating, VisualMinimalFluidity After Heating, VisualFluid

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PUM

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Abstract

A lubricant composition useful for high temperature applications is provided comprising at least one polyol polyester derived from the reaction product of a neopentyl polyol with 5,7,7-trimethyl-2-(1,3,3-trimethylbutyl)-octanoic acid. The lubricants have low evaporation loss, high resistance to oxidation, and provide reduced deposits when utilized alone or in combination with other materials.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit under 35 U.S.C. 119(e) of U.S. Provisional Application No. 60 / 763,297, filed Jan. 30, 2006.BACKGROUND OF THE INVENTION[0002]Lubricants that can maintain their structure under extremes of temperature are useful and essential in many commercial, domestic, and industrial applications. Such applications include, but are not limited to, fiberglass production, wood laminating, wood pressing, paint curing, textile production, and food baking. Lubricants can also be used in aerospace applications in which fluids are exposed to temperatures typically exceeding 200° C. Such high temperature lubrication fluids must also provide sufficient lubrication of metal surfaces to prevent wear, reduce friction, reduce energy consumption, and more importantly, prevent failure of mechanical systems.[0003]Lubricants that are used at high temperatures must also be resistant to thermal and / or oxidative breakdown and polymerizati...

Claims

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Application Information

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IPC IPC(8): C10L1/14
CPCC10M105/38C10M111/04C10N2230/74C10M159/12C10M169/04C10M2203/1065C10M2205/028C10M2205/0285C10M2207/022C10M2207/126C10M2207/283C10M2207/2835C10N2220/022C10N2220/028C10N2230/08C10N2230/10C10N2020/02C10N2020/071C10N2030/10C10N2030/08C10N2030/74
Inventor BURGO, ROCCOHOUSEL, TYLER
Owner ZSCHIMMER & SCHWARZ INC
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