EP1808477A1 - Boron nitride based lubricant additive - Google Patents

Boron nitride based lubricant additive Download PDF

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Publication number
EP1808477A1
EP1808477A1 EP07000413A EP07000413A EP1808477A1 EP 1808477 A1 EP1808477 A1 EP 1808477A1 EP 07000413 A EP07000413 A EP 07000413A EP 07000413 A EP07000413 A EP 07000413A EP 1808477 A1 EP1808477 A1 EP 1808477A1
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EP
European Patent Office
Prior art keywords
lubricant additive
oil
boron nitride
range
lubricant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP07000413A
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German (de)
French (fr)
Inventor
Sandra E. Walker
Marufur Rahim
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National Starch and Chemical Investment Holding Corp
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National Starch and Chemical Investment Holding Corp
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Publication of EP1808477A1 publication Critical patent/EP1808477A1/en
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/20—Compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/26—Compounds containing silicon or boron, e.g. silica, sand
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/02—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic oxygen-containing compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/061—Carbides; Hydrides; Nitrides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/02—Well-defined aliphatic compounds
    • C10M2203/024—Well-defined aliphatic compounds unsaturated
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/108—Residual fractions, e.g. bright stocks
    • C10M2203/1085—Residual fractions, e.g. bright stocks used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/2805—Esters used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
    • C10M2207/289—Partial esters containing free hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • C10M2213/062—Polytetrafluoroethylene [PTFE]
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/028—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrogen-containing hetero ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/055—Particles related characteristics
    • C10N2020/06—Particles of special shape or size
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/62—Food grade properties
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition

Definitions

  • the present invention relates to food grade, low friction additives to be incorporated into oil based lubricants.
  • the present invention discloses a food grade, low friction additive for use with oil-based lubricants.
  • the additive comprises boron nitride in combination with a dispersant and an oil carrier.
  • the lubrication additive of the present invention comprises boron nitride in combination with one or more dispersants and one or more oil carriers.
  • the boron nitride is preferably a food grade hexagonal boron nitride having a particle size in the range of about 0.1 to about 10 microns with an average particle size in the range of about 1 to about 2 microns.
  • One such boron nitride is AC6003, commercially available from GE Advanced Materials.
  • the boron nitride component comprises in the range of about 0.5 to about 50 weight percent of the additive and preferably in the range of about 5 to about 20 weight percent of the additive.
  • the dispersant for the lubrication additive must be one that creates a stable food grade colloidal dispersion.
  • the dispersants that may be utilized are alkylated polyvinylpyrrolidone modified with an ⁇ -olefin.
  • the alkyl component of the polyvinylpyrrolidone varies from C-4 to C-30 linear moiety with concentrations in the range of about 10 to about 80%.
  • One such dispersant is commercially available as GANEX V-216 from ISP.
  • the dispersant may also be alkylated polyvinylpyrrolidone modified with eicosene, commercially available as GANEX V-220 (from ISP), alkylated polyvinylpyrrolidone modified with tricontanyl, commercially available as WP-660 from ISP, or alkylated polyvinylpyrrolidone modified with hexadecane, commercially available from ISP as GANEX V-516.
  • Other examples of dispersants that may be employed include synthetic esters such as glycerol dioleate, isopropyl oleate, glycerol mono-oleate and mixtures thereof.
  • the dispersant component comprises in the range of about 1 to about 30 weight percent of the additive and preferably in the range of about 5 to about 20 weight percent of the additive.
  • the oil carrier must be compatible with the dispersant.
  • one or more synthetic carriers are utilized.
  • Such synthetic carriers include polyalphaolefin and polyalkylene glycol.
  • Food grade polyalphaolefins include SPECRASYN, commercially available from ExxonMobil and SYNFLUID, commercially available from Chevron Phillips.
  • Commercially available polyakylene glycols include EMKAROX, commercially available from Uniqema, and PLURASAFE, commercially available from BASF.
  • Synthetic carriers such as these are capable of providing proper lubrication additive properties under high temperatures and harsh conditions.
  • the synthetic carrier component comprises in the range of about 45 to about 99 weight percent of the additive and preferably in the range of about 70 to about 80 weight percent of the additive.
  • Non-synthetic oil carriers including but not limited to, food grade white oils may also be used.
  • the lubricant additive of the present invention is combined with an oil-based lubricant to form a lubricant package suitable for use in high temperatures and other harsh conditions.
  • oil-based lubricants to which the additive may be added include, but are not limited to, commercial-type oil-based lubricants. The method for forming such a lubricant would be to add the desired amount of the lubricant additive to an oil-based lubricant.
  • Lubricant additives were made according to the following process. Boron nitride was added to the dispersant and thoroughly mixed. The initial processing may be completed by use of a commercial low shear mixer or kneader or via high speed dispersion using a cowles blade. The dispersion is continued for at least 14 hours using cooling water in a mill jacket to form a paste. When the boron nitride powder has been thoroughly mixed, any remaining dispersant should be added along with sufficient oil to thin the composition to a pourable consistency in the range of about 13 to about 15% solids. The blend is then filtered or centrifuged to maintain a maximum particle size of about 5 microns. Once this particle size is achieved, the material may be further thinned to the desired solids level.
  • Lubrication packages were set forth in Table 1.
  • Table 1 Lubrication Package Formulations Material A (wt%) B (wt%) C wt%) D (wt %) E (wt %) Boron Nitride 1 0.2 1 Graphite 1 PTFE 0.8 Mineral Oil 99 Ester 99 Polyalkylene Glycol 99 Polyalphaolefin 100 99
  • the lubrication packages listed in Table 1 were tested to determine their lubricating properties by measuring the amperage used by a motor while rotating a metal cylinder against a stationary cylinder.
  • the lubrication packages were tested along with comparative formulation A, which is polyalphaolefin.
  • the lubrication package was applied to the cylinders and the amperage was measured every five minutes.
  • the test results are shown in Table 2.
  • Lubricant additive test results Formulation /Time Amperage 5 Minutes Amperage 10 Minutes Amperage 15 Minutes Amperage 20 Minutes Amperage 25 Minutes Amperage 30 Minutes A 10 10 9.8 9.7 9.7 10 B 9.5 9.3 9.5 9.5 9.1 9. C 9.6 9 8.9 8.9 8.9 D 8.1 7.9 7.9 7.9 7.9 8 E 8.1 7.9 7.9 7.9 7.6 7.5
  • the lubrication packages containing boron nitride provide superior lubrication, as evidenced by a reduction in the amperage required to rotate the cylinders.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

A food grade, low friction lubricant additive for use with oil-based lubricants. The additive comprises boron nitride in combination with a dispersant and an oil carrier.

Description

    FIELD OF THE INVENTION
  • The present invention relates to food grade, low friction additives to be incorporated into oil based lubricants.
    • BACKGROUND OF THE INVENTION
  • The food manufacturing industry is constantly striving toward higher levels of performance by increasing manufacturing efficiency and decreasing manufacturing time. Among the improvements in the industry are faster manufacturing line speeds and higher operating temperatures. Both of these conditions can negatively affect the longevity and maintenance of the chains, gears and other movable parts utilized in the manufacturing process. Current lubrication technologies consist of graphite and/or additives, however these lubricants are not suitable for uses which may have incidental food contact. Further, bakery oven applications may experience temperatures as high as 1000°F and existing food grade base oils can not perform at these extreme temperatures. Consequently, there is a need within the industry for food grade lubricant additives that will perform in the higher temperatures and other harsh conditions encountered during the food manufacturing process. Such lubricant additives would provide longer lubrication intervals, longer equipment life, and reduced maintenance and energy costs.
    • SUMMARY OF THE INVENTION
  • The present invention discloses a food grade, low friction additive for use with oil-based lubricants. The additive comprises boron nitride in combination with a dispersant and an oil carrier.
    • DETAILED DESCRIPTION OF THE PRESENT INVENTION
  • Food and other manufacturing processes utilize machinery consisting of chains, gears and other moving parts that require a high level of lubrication. The quality of the lubrication is critical to ensure the proper functioning of the equipment. Improperly lubricated equipment will have significant down time and require more frequent replacement and repair than properly lubricated equipment. Equipment utilized in food manufacturing processes has the further requirement that its lubricants must be approved for contact with food, thus severely limiting the potential lubricant ingredients. Oil-based lubricants are frequently utilized in the industry, however such lubricants require additional low friction additives to properly perform in the increasingly harsh environments encountered during the manufacturing processes. While it is stated throughout the application that the lubricant additives of the present invention are for use in food grade applications, it is to be understood that these lubricant additives may also be utilized in non-food grade applications where desired.
  • The lubrication additive of the present invention comprises boron nitride in combination with one or more dispersants and one or more oil carriers. The boron nitride is preferably a food grade hexagonal boron nitride having a particle size in the range of about 0.1 to about 10 microns with an average particle size in the range of about 1 to about 2 microns. One such boron nitride is AC6003, commercially available from GE Advanced Materials. The boron nitride component comprises in the range of about 0.5 to about 50 weight percent of the additive and preferably in the range of about 5 to about 20 weight percent of the additive.
  • The dispersant for the lubrication additive must be one that creates a stable food grade colloidal dispersion. Among the dispersants that may be utilized are alkylated polyvinylpyrrolidone modified with an α-olefin. Preferably the alkyl component of the polyvinylpyrrolidone varies from C-4 to C-30 linear moiety with concentrations in the range of about 10 to about 80%. One such dispersant is commercially available as GANEX V-216 from ISP. The dispersant may also be alkylated polyvinylpyrrolidone modified with eicosene, commercially available as GANEX V-220 (from ISP), alkylated polyvinylpyrrolidone modified with tricontanyl, commercially available as WP-660 from ISP, or alkylated polyvinylpyrrolidone modified with hexadecane, commercially available from ISP as GANEX V-516. Other examples of dispersants that may be employed include synthetic esters such as glycerol dioleate, isopropyl oleate, glycerol mono-oleate and mixtures thereof. Examples of such dispersant are PRIOLUBE 1406; PRIOLUBE 1407; PRIOLUBE 1408; PRIOLUBE 1409; and PRIOLUBE 1412, commercially available from Uniqema. The dispersant component comprises in the range of about 1 to about 30 weight percent of the additive and preferably in the range of about 5 to about 20 weight percent of the additive.
  • The oil carrier must be compatible with the dispersant. Preferably one or more synthetic carriers are utilized. Such synthetic carriers include polyalphaolefin and polyalkylene glycol. Food grade polyalphaolefins include SPECRASYN, commercially available from ExxonMobil and SYNFLUID, commercially available from Chevron Phillips. Commercially available polyakylene glycols include EMKAROX, commercially available from Uniqema, and PLURASAFE, commercially available from BASF. Synthetic carriers such as these are capable of providing proper lubrication additive properties under high temperatures and harsh conditions. The synthetic carrier component comprises in the range of about 45 to about 99 weight percent of the additive and preferably in the range of about 70 to about 80 weight percent of the additive. Non-synthetic oil carriers, including but not limited to, food grade white oils may also be used.
  • In a further embodiment of the present invention, the lubricant additive of the present invention is combined with an oil-based lubricant to form a lubricant package suitable for use in high temperatures and other harsh conditions. Exemplary oil-based lubricants to which the additive may be added include, but are not limited to, commercial-type oil-based lubricants. The method for forming such a lubricant would be to add the desired amount of the lubricant additive to an oil-based lubricant.
  • The invention may be further described by the following example which is merely to illustrate the invention and does not limit the scope of the invention.
    Example. Lubricant additives were made according to the following process. Boron nitride was added to the dispersant and thoroughly mixed. The initial processing may be completed by use of a commercial low shear mixer or kneader or via high speed dispersion using a cowles blade. The dispersion is continued for at least 14 hours using cooling water in a mill jacket to form a paste. When the boron nitride powder has been thoroughly mixed, any remaining dispersant should be added along with sufficient oil to thin the composition to a pourable consistency in the range of about 13 to about 15% solids. The blend is then filtered or centrifuged to maintain a maximum particle size of about 5 microns. Once this particle size is achieved, the material may be further thinned to the desired solids level.
  • For testing purposes, the additive concentrates were added to various carriers to form lubrication packages with about 1 to 2 weight percent solid lubricant additive. The lubrication packages are set forth in Table 1. Table 1. Lubrication Package Formulations
    Material A (wt%) B (wt%) C wt%) D (wt %) E (wt %)
    Boron Nitride 1 0.2 1
    Graphite 1
    PTFE 0.8
    Mineral Oil 99
    Ester 99
    Polyalkylene Glycol 99
    Polyalphaolefin 100 99
  • The lubrication packages listed in Table 1 were tested to determine their lubricating properties by measuring the amperage used by a motor while rotating a metal cylinder against a stationary cylinder. The lubrication packages were tested along with comparative formulation A, which is polyalphaolefin. The lubrication package was applied to the cylinders and the amperage was measured every five minutes. The test results are shown in Table 2. Table 2. Lubricant additive test results.
    Formulation /Time Amperage 5 Minutes Amperage 10 Minutes Amperage 15 Minutes Amperage 20 Minutes Amperage 25 Minutes Amperage 30 Minutes
    A 10 10 9.8 9.7 9.7 10
    B 9.5 9.3 9.5 9.5 9.1 9.
    C 9.6 9 8.9 8.9 8.9 8.9
    D 8.1 7.9 7.9 7.9 7.9 8
    E 8.1 7.9 7.9 7.9 7.6 7.5
  • As shown in Table 2, the lubrication packages containing boron nitride provide superior lubrication, as evidenced by a reduction in the amperage required to rotate the cylinders.
  • Many modifications and variations of this invention can be made without departing from its spirit and scope, as will be apparent to those skilled in the art. The specific embodiments described herein are offered by way of example only, and the invention is to be limited only by the terms of the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims (19)

  1. A lubricant additive comprising boron nitride, one or more dispersants and one or more oil carriers.
  2. The lubricant additive of claim 1, wherein the oil carrier comprises one or more synthetic carriers.
  3. The lubricant additive of claim 1, wherein the boron nitride is hexagonal boron nitride having a particle size in the range of about 0.1 to about 10 microns.
  4. The lubricant additive of claim 1, wherein the dispersant is alkylated polyvinylpyrrolidone modified with one or more of the group consisting of a-olefins, eicosene, tricontanyl, hexadecane or mixtures thereof.
  5. The lubricant additive of claim 4, wherein the alkyl component of the polyvinylpyrrolidone has a linear moiety in the range of from C-4 to C-30.
  6. The lubricant additive of claim 1, wherein the dispersant comprises on or more synthetic esters.
  7. The lubricant additive of claim 6, wherein the synthetic ester is selected from the group consisting of glycerol dioleate, isopropyl oleate, glycerol mono-oleate and mixtures thereof.
  8. The lubricant additive of claim 2, wherein the synthetic carrier is selected from the group consisting of polyalphaolefin, polyalkylene glycol and mixtures thereof.
  9. The lubricant additive of claim 1, wherein the lubricant additive is suitable for food grade applications.
  10. The lubricant additive of claim 1, wherein the lubricant additive comprises in the range of about 0.5 to about 50 weight percent boron nitride.
  11. The lubricant additive of claim 10, wherein the lubricant additive comprises in the range of about 5 to about 20 weight percent boron nitride.
  12. The lubricant additive of claim 1, wherein the lubricant additive comprises in the range of about 5 to about 30 weight percent dispersant.
  13. The lubricant additive of claim 1, wherein the lubricant additive comprises in the range of about 5 to about 20 weight percent dispersant.
  14. The lubricant additive of claim 1, wherein the oil carrier comprises in the range of about 45 to about 99 weight percent synthetic carrier.
  15. The lubricant additive of claim 14, wherein the oil carrier comprises in the range of about 70 to about 80 weight percent synthetic carrier.
  16. An oil-based lubrication package comprising an oil-based lubricant and the lubricant additive of claim 1.
  17. The lubricant additive of claim 1, wherein the oil carrier comprises one or more white oils
  18. A method for forming an oil-based lubrication package comprising the step of adding the lubricant additive of claim 1 to an oil-based lubricant.
  19. A food-grade lubricant additive comprising boron nitride, one or more dispersants and one or more synthetic oil carriers.
EP07000413A 2006-01-11 2007-01-10 Boron nitride based lubricant additive Withdrawn EP1808477A1 (en)

Applications Claiming Priority (1)

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US11/275,506 US20070161518A1 (en) 2006-01-11 2006-01-11 Boron Nitride Based Lubricant Additive

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EP1808477A1 true EP1808477A1 (en) 2007-07-18

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US (1) US20070161518A1 (en)
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JP (1) JP2007186698A (en)
KR (1) KR20070075309A (en)
CN (1) CN100999692A (en)
BR (1) BRPI0700028A (en)
CA (1) CA2573039A1 (en)
MX (1) MX2007000365A (en)

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US7994105B2 (en) * 2007-08-11 2011-08-09 Jagdish Narayan Lubricant having nanoparticles and microparticles to enhance fuel efficiency, and a laser synthesis method to create dispersed nanoparticles
US20100047038A1 (en) * 2008-08-21 2010-02-25 Brimhall James V Bolt protectors for subsurface pipe fittings and associated methods
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DE102011103215A1 (en) * 2011-06-01 2012-12-06 KLüBER LUBRICATION MüNCHEN KG Use of nanoscale materials in a composition to prevent fatigue phenomena in the near-surface microstructure of drive elements
EP2907868A4 (en) 2012-10-12 2016-05-25 Jx Nippon Oil & Energy Corp LUBRICANT ADDITIVE AND LUBRICATING OIL COMPOSITION
CN105602687A (en) * 2016-01-08 2016-05-25 泉州众志金刚石工具有限公司 Release agent composition
CN107164016A (en) * 2017-04-21 2017-09-15 四川碳世界科技有限公司 A kind of lubricating oil that boron nitride antiwear additive is modified containing alkylamine and preparation method thereof
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CN100999692A (en) 2007-07-18
CA2573039A1 (en) 2007-07-11
MX2007000365A (en) 2007-07-10
US20070161518A1 (en) 2007-07-12
KR20070075309A (en) 2007-07-18
BRPI0700028A (en) 2007-10-16
JP2007186698A (en) 2007-07-26

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