US20160137948A1 - Lubricant composition for chains, and chain - Google Patents

Lubricant composition for chains, and chain Download PDF

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Publication number
US20160137948A1
US20160137948A1 US14/898,887 US201414898887A US2016137948A1 US 20160137948 A1 US20160137948 A1 US 20160137948A1 US 201414898887 A US201414898887 A US 201414898887A US 2016137948 A1 US2016137948 A1 US 2016137948A1
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Prior art keywords
lubricant composition
chain
mass
content
blackening
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Abandoned
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US14/898,887
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English (en)
Inventor
Kunito Yoshii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsubakimoto Chain Co
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Tsubakimoto Chain Co
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Filing date
Publication date
Application filed by Tsubakimoto Chain Co filed Critical Tsubakimoto Chain Co
Assigned to TSUBAKIMOTO CHAIN CO. reassignment TSUBAKIMOTO CHAIN CO. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YOSHII, Kunito
Publication of US20160137948A1 publication Critical patent/US20160137948A1/en
Abandoned legal-status Critical Current

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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
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/68—Esters
    • C10M129/76—Esters containing free hydroxy or carboxyl 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
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02—Petroleum fractions
    • 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
    • C10M119/00—Lubricating compositions characterised by the thickener being a macromolecular compound
    • C10M119/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • 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
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/68—Esters
    • C10M129/70—Esters of 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links
    • 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
    • C10M2207/283—Esters of polyhydroxy compounds
    • 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
    • C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
    • 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
    • C10N2030/40—Low content or no content compositions
    • 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
    • C10N2030/40—Low content or no content compositions
    • C10N2030/42—Phosphor free or low phosphor content compositions
    • 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
    • C10N2030/40—Low content or no content compositions
    • C10N2030/43—Sulfur free or low sulfur content compositions
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/38—Conveyors or chain belts

Definitions

  • the present invention relates to a lubricant composition for a chain and a chain applied with the same.
  • Patent Document 1 discloses a lubricant composition containing a wax as a thickener.
  • the lubricant composition has a consistency of 60 to 475 and a drop point of 60° C. to 120° C. when measured by the measuring methods according to the Japanese Industrial Standard (JIS) K 2220.
  • JIS Japanese Industrial Standard
  • Patent Document 1 does not teach anything about improvement of blackening of a chain.
  • An object of the present invention is to provide a lubricant composition for a chain that can suppress blackening of a chain, and a chain applied with the lubricant composition.
  • a lubricant composition for a chain comprises a base oil, a thickener, and an anticorrosive agent, wherein the lubricant composition has a sulfur content of not more than 100 ppm, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %.
  • a lubricant composition containing at least one of sulfur, phosphorus, and aromatic components at a predetermined concentration or more blackens easily by heating.
  • a lubricant composition has a sulfur content of not more than 100 ppm by mass, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %, the blackening to be caused by the sulfur, phosphorus, and aromatic components is suppressed.
  • the lubricant composition further comprises an oily agent, the oily agent preferably comprising a compound having a sulfur content of not more than 100 ppm, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %.
  • oily agent preferably comprising a compound having a sulfur content of not more than 100 ppm, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %.
  • the oily agent comprises at least one selected from a fatty acid ester and a lanolin fatty acid alcohol ester.
  • the lubricant composition is preferably for use in a vessel for dipping a chain.
  • a chain applied with the lubricant composition is provided.
  • FIG. 1 is a schematic exploded perspective view of part of a chain of an embodiment.
  • FIG. 2 is a schematic partial cross-sectional view of a chain.
  • the lubricant composition contains a base oil, a thickener, and an anticorrosive agent.
  • the lubricant composition has a sulfur content of not more than 100 ppm by mass, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %.
  • the base oil has a sulfur content of not more than 100 ppm by mass, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %.
  • the base oil is preferably at least one selected from a mineral oil and a synthetic oil.
  • a mineral oil that has a low sulfur content and substantially no phosphorus and aromatic components is suitable.
  • Such a mineral oil can be selected from commercially-supplied process oils.
  • Components of the mineral oil can include a paraffinic hydrocarbon such as liquid paraffin.
  • the paraffinic hydrocarbon has a paraffinic carbon content (% CP) of 50 or higher determined by a ring analysis using the n-d-M method.
  • Examples of the synthetic oil include synthetic hydrocarbons (such as poly- ⁇ -olefins (PAOs), co-oligomers of ethylene and an ⁇ -olefins, and polybutene), esters, polyphenyl ethers, polyalkylene glycols, silicones, and fluorocarbons.
  • Examples of the esters include hindered esters (such as dibasic acid esters and polyolesters), diesters, and silicate esters.
  • the lubricant composition may contain one or more base oils.
  • the content of the base oil in the lubricant composition is preferably 70 mass % or more.
  • the thickener is in a solid state at normal temperature (25° C.). When dispersed or dissolved in the base oil, the thickener increases the viscosity of the base oil.
  • the thickener preferably comprises a compound having a sulfur content of not more than 100 ppm by mass, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %. At least one selected from a polymerized polyethylene wax and a polymer is preferably used as the thickner. Examples of the polymer include polymethacrylate and polyisobutylene.
  • the lubricant composition may contain one or more thickeners.
  • the content of the thickener in the lubricant composition is preferably 1 mass % or more.
  • the content of the thickener in the lubricant composition is preferably 25 mass % or less.
  • the anticorrosive agent preferably comprises a compound having a sulfur content of not more than 100 ppm by mass, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %.
  • the favorably usable anticorrosive agent include a sorbitan-based anticorrosive agent, a lanolin-based anticorrosive agent, a succinic acid-based anticorrosive agent, an amine-based anticorrosive agent, and a metal soap.
  • sorbitan-based anticorrosive agent examples include sorbitan fatty acid esters (such as sorbitan monooleate and sorbitan tristearate).
  • lanolin-based anticorrosive agent examples include lanolin fatty alcohols and lanolin fatty acid alcohol esters.
  • succinic acid-based anticorrosive agent examples include alkyl succinic acid derivatives such as alkyl succinic anhydrides.
  • Examples of the amine-based anticorrosive agent include amine salts of organic acids and amine salts of fatty acids.
  • Examples of the metal soap include a lanolin fatty acid soap.
  • the lubricant composition may contain one or more anticorrosive agents.
  • the anticorrosive agent preferably contains a sorbitan fatty acid ester.
  • the content of the anticorrosive agent in the lubricant composition is preferably 1 mass % or more.
  • the content of the anticorrosive agent in the lubricant composition is preferably mass % or less.
  • An oily agent may be added to the lubricant composition.
  • the oily agent preferably comprises a compound having a sulfur content of not more than 100 ppm by mass, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %.
  • oily agent examples include fatty acid esters, lanolin fatty acid alcohol esters, long-chain fatty acids, long-chain fatty acid salts, organic alcohols, and alkyl amines.
  • the fatty acid esters may be represented by the following general formula (1).
  • R 1 is a C 7 -C 18 saturated or unsaturated alkyl group and R 2 is a C 1 -C 4 alkyl group.
  • lanolin fatty acid alcohol ester examples include lanolin fatty acid-lanolin alcohol esters (trade name: ECOLANO LY, LC, manufactured by Nippon Fine Chemical Co., Ltd.) and lanolin fatty acid pentaerythritol esters (trade name: NEOCOAT EPS-2, EPS-24, manufactured by Nippon Fine Chemical Co., Ltd.).
  • the lanolin fatty acid alcohol ester also has a function of enhancing the anticorrosive effect.
  • Examples of the long-chain fatty acid include C 7 -C 17 saturated or unsaturated fatty acids.
  • Examples of the long-chain fatty acid include stearic acid and oleic acid.
  • Examples of the organic alcohol include lauryl alcohol.
  • Examples of the alkyl amine include stearyl amine.
  • the lubricant composition may contain one or more oily agents.
  • the lubricant composition preferably contains the oily agent. It is more preferable that the oily agent comprises at least one selected from a fatty acid ester and a lanolin fatty acid alcohol ester.
  • the content of the oily agent in the lubricant composition is preferably in a range between 1 mass % and 10 mass %. More preferably, the lubricant composition contains a fatty acid ester in a range between 1 mass % and 10 mass %.
  • an extreme-pressure agent may be added to the lubricant composition.
  • an antioxidant may be added to the lubricant composition.
  • a defoaming agent may be added to the lubricant composition.
  • the sulfur content in the lubricant composition can be determined quantitatively, for example, by the method set forth in JIS K2541.
  • the phosphorus content in the lubricant composition can be determined quantitatively, for example, by plasma emission spectrometry.
  • the aromatic content in the lubricant composition can be determined quantitatively, for example, by a ring analysis using the n-d-M method.
  • the lubricant composition is prepared by mixing a base oil, a thickener, and an anticorrosive agent with a well-known stirrer.
  • the oily agent, etc. may be simultaneously added to the lubricant composition as needed.
  • the preparation of the lubricant composition is preferably carried out at or above the melting temperature of the thickener.
  • a chain 11 of the embodiment is a roller chain configured such that an inner link 21 and an outer link 31 adjacent to each other are pivotally interconnected.
  • the inner link 21 has two inner plates 22 , 23 facing each other, cylindrical bushings 24 , 25 supporting the inner plates 22 , 23 , and cylindrical rollers 26 , 27 located rotationally around the bushings 24 , 25 .
  • the inner plates 22 , 23 are retained apart from each other due to linkage with the bushings 24 , 25 .
  • the inner plate 22 has through-holes 22 a , 22 b at both ends in the longitudinal direction of the chain 11 .
  • the inner plate 23 has through-holes 23 a , 23 b at both ends.
  • the hole of the bushing 24 goes through the through-holes 22 a , 23 a and opens at the external surfaces, which are opposite to the surfaces facing each other, of the inner plates 22 , 23 .
  • the hole of the bushing 25 goes through the through-holes 22 b , 23 b and opens at the external surfaces, which are opposite to the surfaces facing each other, of the inner plates 22 , 23 .
  • the outer link 31 has two outer plates 32 , 33 facing each other, and two solid cylindrical pins 34 , 35 connecting the outer plates 32 , 33 .
  • the outer plates 32 , 33 are retained apart from each other due to linkage with the pins 34 , 35 .
  • the pins 34 , 35 are inserted respectively into the bushing 25 of the inner link 21 and the bushing 24 of another inner link 21 placed adjacent to the former inner link 21 . In this manner, two adjacent inner links 21 are connected via an outer link 31 .
  • the chain 11 may be formed, for example, from a steel material.
  • the lubricant composition is applied to the chain 11 , for example, by dipping the chain 11 in the lubricant composition to supply the lubricant composition between the outer peripheries of the pins 34 , 35 and the inner peripheries of the bushings 24 , 25 .
  • the lubricant composition is preferably kept at or above the melting temperature of the thickener during dipping. When the lubricant composition is heated to, for example, 100° C. or higher, the lubricant composition can easily flow in between the outer peripheries of the pins 34 , and the inner peripheries of the bushings 24 , 25 .
  • a vessel for dipping the chain is used.
  • the lubricant composition is kept in a heated state.
  • the chain 11 is transported out of the vessel, and then a new chain 11 is dipped in the lubricant composition in the vessel.
  • application of the lubricant composition to the chain 11 namely, lubrication, is repeated in the vessel for dipping a chain.
  • Fresh lubricant composition is replenished to the vessel depending on the amount of the lubricant composition consumed by the application to the chains 11 .
  • the lubricant composition of the embodiment contains substantially no or a very low concentration of sulfur, phosphorus, and aromatic components that may cause blackening. Therefore, even when the lubricant composition is kept in a heated state for a long period in the vessel for dipping a chain, blackening of the lubricant composition is suppressed. In other words, a lubricant composition of the embodiment can easily maintain its original color (for example, brown or light brown) in a heated state.
  • the chain 11 is used, for example, for conveying an article or transmission of power.
  • the chain 11 is used, for example, in a state wound around a plurality of sprockets.
  • the lubricant composition lubricates, for example, the spaces between the outer peripheries of the pins 34 , 35 and the inner peripheries of the bushings 24 , 25 .
  • the lubricant composition contains a base oil, a thickener, and an anticorrosive agent, and has a sulfur content of not more than 100 ppm by mass, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %.
  • blackening of the lubricant composition to be caused by sulfur, phosphorus, and aromatic components can be suppressed. Therefore, blackening of the chain 11 applied with the lubricant composition can be suppressed, and the chain 11 having favorable appearance can be obtained.
  • the lubricant composition further contains an oily agent preferably comprising a compound having a sulfur content of not more than 100 ppm by mass, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %.
  • an oily agent preferably comprising a compound having a sulfur content of not more than 100 ppm by mass, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %.
  • the anticorrosive agent to be added to the lubricant composition preferably contains a sorbitan fatty acid ester.
  • a sorbitan fatty acid ester can exhibit an anticorrosive effect in a relatively small amount. Since a sorbitan fatty acid ester contains substantially no sulfur, phosphorus, and aromatic components, blackening of the lubricant composition to be caused by sulfur, phosphorus, and aromatic components can be suppressed.
  • a sorbitan fatty acid ester or a lanolin fatty acid alcohol ester has a function of inhibiting crystallization of the thickener in the lubricant composition. Therefore, even if the thickener is partially solidified in the lubricant composition, the solidified thickener remains hardly visible, and thus the appearance of the chain 11 is improved.
  • the high temperature in the vessel for dipping a chain is one of the causes for the development of blackening of the lubricant composition.
  • the lubricant composition of the embodiment is especially advantageous, because it is resistant to blackening in such a high temperature vessel for dipping a chain.
  • a lubricant composition that is not resistant to blackening it becomes necessary that, when the lubricant composition in the vessel for dipping a chain blackens, the lubricant composition be replaced with a freshly prepared one.
  • the frequency of the replacement increases, the labor and cost for the replacement increase.
  • the lubricant composition of the embodiment is resistant to blackening, the frequency of the replacement of the lubricant composition caused by the blackening can be reduced.
  • the sulfur content in the base oil added to the lubricant composition may exceed 100 ppm by mass.
  • the sulfur content in the lubricant composition can be adjusted to 100 ppm by mass or less by, for example, employing substantially sulfur-free compounds as the thickener and the anticorrosive agent.
  • at least one of the sulfur content, the phosphorus content, and the aromatic content in the ingredients of the lubricant composition may exceed the concentrations specified for the lubricant composition.
  • the chain to which the lubricant composition is applied is not limited to a roller chain but may be, for example, a bushing chain having no rollers 26 , 27 .
  • the lubricant composition of the above embodiment is applied to the chain 11 for so-called pre-lubrication purpose.
  • the lubricant composition may also be applied for the purpose of maintenance of the chain 11 when the chain 11 is in use, namely, when the chain 11 is outside the vessel for dipping a chain. Even in such a case, blackening of the chain 11 to be caused by, for example, heat generation during use of the chain 11 or heating from the environment of use, can be suppressed.
  • the base oils shown in Table 1 were kept at 150° C. and the blackening was evaluated according to the following criteria:
  • the highly purified mineral oil contains substantially no phosphorus and aromatic components.
  • the sulfur content in the highly purified mineral oil is several tens of ppm by mass or less.
  • the synthetic hydrocarbon contains substantially none of sulfur, phosphorus, and aromatic components.
  • Classification Component Compound name Blackening test Oily agent Long-chain fatty acid Oleic acid B Fatty acid ester Butyl stearate B Organic alcohol Lauryl alcohol B Amine Stearyl amine C Extreme- Sulfurized olefin Sulfurized isobutylene D pressure Sulfide Dibenzyl sulfide D agent Phosphite Tributyl phosphite C Phosphate Tricresyl phosphate C Amine phosphate C Dialkyldithiophosphate Zn-dialkyldithiophosphate D Dialkali dithiocarbamate Methylene-bis(dibutyl D dithiocarbamate)
  • the lubricant composition of each Example was prepared by mixing the respective ingredients according to the composition shown in Table 5.
  • the base oil is a highly purified mineral oil (trade name: Sunpure P100, manufactured by Japan Sun Oil Company, Ltd.), and the thickener is a polyethylene wax (MITSUI Hi-WAX 200P, manufactured by Mitsui Chemicals, Inc.).
  • the anticorrosive agent is a sorbitan fatty acid ester
  • the oily agent is a fatty acid ester.
  • the lubricant composition of each Example was prepared such that the sulfur content was not more than 100 ppm by mass, the phosphorus content was not more than 1 mass %, and the aromatic content was not more than 1 mass %.
  • the lubricant composition of each Comparative Example was prepared by mixing the respective ingredients according to the composition shown in Table 5.
  • Table 5 As the extreme-pressure agent in Table 5, a sulfurized olefin was used in Comparative Example 1 and a dialkyl dithiophosphate was used in Comparative Example 2.
  • the sulfur content in the lubricant composition of each Comparative Example was more than 100 ppm by mass.
  • the chain 11 as shown in FIGS. 1 and 2 was dipped in each of the lubricant compositions of the Examples and Comparative Examples. After an elapse of 10 minutes, the chain 11 was taken out from the vessel.
  • the chains 11 applied with the lubricant compositions of the Examples exhibited good appearance with no blackening.
  • the chains 11 applied with the lubricant compositions of the Comparative Examples exhibited poor appearance with obvious blackening.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lubricants (AREA)
US14/898,887 2013-07-05 2014-06-19 Lubricant composition for chains, and chain Abandoned US20160137948A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2013142096A JP5808775B2 (ja) 2013-07-05 2013-07-05 チェーン用潤滑剤組成物及びチェーン
JP2013-142096 2013-07-05
PCT/JP2014/066325 WO2015001978A1 (ja) 2013-07-05 2014-06-19 チェーン用潤滑剤組成物及びチェーン

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US20160137948A1 true US20160137948A1 (en) 2016-05-19

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US14/898,887 Abandoned US20160137948A1 (en) 2013-07-05 2014-06-19 Lubricant composition for chains, and chain

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US (1) US20160137948A1 (enrdf_load_stackoverflow)
JP (1) JP5808775B2 (enrdf_load_stackoverflow)
CN (1) CN105339478A (enrdf_load_stackoverflow)
DE (1) DE112014003161T5 (enrdf_load_stackoverflow)
WO (1) WO2015001978A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11543004B2 (en) * 2019-09-18 2023-01-03 Tsubakimoto Chain Co. Chain drive system
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US20240392205A1 (en) * 2022-02-18 2024-11-28 Henkel Ag & Co. Kgaa Anti-corrosive lubricant composition for electrical apparatus

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WO2015001978A1 (ja) 2015-01-08

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