EP0422822A1 - Compositions d'huile lubrifiante - Google Patents

Compositions d'huile lubrifiante Download PDF

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Publication number
EP0422822A1
EP0422822A1 EP90310807A EP90310807A EP0422822A1 EP 0422822 A1 EP0422822 A1 EP 0422822A1 EP 90310807 A EP90310807 A EP 90310807A EP 90310807 A EP90310807 A EP 90310807A EP 0422822 A1 EP0422822 A1 EP 0422822A1
Authority
EP
European Patent Office
Prior art keywords
oils
oil
lubricating oil
lubricating
perfluoro
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.)
Granted
Application number
EP90310807A
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German (de)
English (en)
Other versions
EP0422822B1 (fr
Inventor
Shinichi Shirahama
Yuji Ikemoto
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.)
Eneos Corp
Original Assignee
Nippon Oil Corp
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Filing date
Publication date
Application filed by Nippon Oil Corp filed Critical Nippon Oil Corp
Publication of EP0422822A1 publication Critical patent/EP0422822A1/fr
Application granted granted Critical
Publication of EP0422822B1 publication Critical patent/EP0422822B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C10M147/00—Lubricating compositions characterised by the additive being a macromolecular compound containing halogen
    • C10M147/04—Monomer containing carbon, hydrogen, halogen and oxygen
    • 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
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/004—Foam inhibited lubricant compositions
    • 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
    • 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
    • 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
    • C10M2213/04—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen
    • 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
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • 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
    • C10N2040/02—Bearings
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/08—Hydraulic fluids, e.g. brake-fluids
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/10—Running-in-oil ; Grinding
    • C—CHEMISTRY; METALLURGY
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/12—Gas-turbines
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    • C10N2040/13—Aircraft turbines
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    • C10N2040/135—Steam engines or turbines
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/22—Metal working with essential removal of material, e.g. cutting, grinding or drilling
    • C—CHEMISTRY; METALLURGY
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
    • C—CHEMISTRY; METALLURGY
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
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    • C10N2040/241—Manufacturing joint-less pipes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10N2040/242—Hot working
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    • C10N2040/243—Cold working
    • C—CHEMISTRY; METALLURGY
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    • C10N2040/244—Metal working of specific metals
    • C10N2040/245—Soft metals, e.g. aluminum
    • C—CHEMISTRY; METALLURGY
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
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    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/246—Iron or steel
    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/251—Alcohol-fuelled engines
    • C—CHEMISTRY; METALLURGY
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/252—Diesel engines
    • C—CHEMISTRY; METALLURGY
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
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    • C10N2040/253—Small diesel engines
    • C—CHEMISTRY; METALLURGY
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    • C10N2040/255—Gasoline engines
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    • C10N2040/32—Wires, ropes or cables lubricants
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    • C10N2040/34—Lubricating-sealants
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    • C10N2040/36—Release agents or mold release agents
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    • C10N2040/38—Conveyors or chain belts
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/40—Generators or electric motors in oil or gas winning field
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    • C10N2040/42—Flashing oils or marking oils
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/44—Super vacuum or supercritical use
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    • C10N2040/50—Medical uses

Definitions

  • This invention relates to lubricating oil compositions and more particularly to lubricating oil compositions rich have excellent defoamability (defoaming ability) and are utilizable as engine oils, gear oils, hydraulic oils, automatic transmission oils, bearing oils or the like.
  • lubricating oils are made to circulate through lubricating portions (which are those to be lubricated) during their use to save the amount thereof used. Therefore. the oils which passed through the lubricating portions are then returned to a sump. Since the oils have air caught therein at the lubricating portions, the oils so returned ordinarily foam or bubble. If the foam in the oils is difficultly breakable, it will gradually increase during the use of the oils whereupon the oils will finally overflow the sump. Accordingly, defoamability is required in lubricating oils.
  • Antifoaming agents such as silicone oils and polyacrylates, have heretofore been added to base oils for the sake of improving the resulting lubricating oils in defoamability.
  • silicone oils are known as good antifoaming agents, they have comparatively high solubility to light-­fraction oils thereby they will remarkably lower in defoamability when used in the light-fraction oils. Further, the silicone oils will deteriorate when used for a long period of time, used under hard conditions or used with certain chemical materials, thereby causing the silicone oils to lose their defoamability.
  • Polyacrylates are inferior in defoamability.
  • perfluoro ethers are known as base oils for synthetic lubricating oils, they have never been used as minor components in lubricating oils since they are hardly soluble in other mineral oils and synthetic oils.
  • the present invention has an object to provide a lubricating oil composition having excellent defoamability or defoaming ability which is little lowered even if the composition is used for a long period of time or under hard conditions.
  • the present inventors had made intensive studies in attempts to achieve the object mentioned above and, as the result of their studies, they found that a lubricating oil composition including a perfluoroalkyl ether has excellent defoamability.
  • the present invention is based on this finding.
  • the lubricating oil composition of the present invention includes as an essential component a perfluoro ether in an amount by weight of 1-1000 ppm based on the total weight of the composition.
  • base oils ordinarily used for lubricating oils are utilizable as base oils used in the lubricating oil compositions of the present invention, and it does not matter whether said base oils are mineral oil-­based or synthetic oil-based ones.
  • mineral oil-based lubricating oils used herein are those produced by subjecting fractions obtained by atmospheric distillation or reduced pressure distillation of mineral oils, to any suitable refining treatment such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, hydrodewaxing, sulfuric acid treatment, clay treatment, hydrorefining or the like, or any suitable combination thereof.
  • examples of the synthetic oil-based lubricating oils include alpha-olefin oligomers such as normal paraffin, isoparaffin, polybutene, polyisobutylene and 1-decene oligomers: alkylbenzenes such as a monoalkylbenzene, dialkylbenzene and polyalkylbenzene; alkylnaphthalenes such as a monoalkylnaphthalene, dialkylnaphthalene and polyalkylnaphthalene; diesters such as di-2-ethylhexyl sebacate, dioctyl adipate, diisodecyl adipate, ditridecyl adipate and ditridecyl glutarate; polyol esters such as trimethylolpropane caprylate, trimethylolpropane pelargonate, pentaerythritol-2-ethyl hexanoate and penta
  • oils may be used singly or jointly.
  • the base oils mentioned above should have a viscosity at 40°C of preferably 2 to 1000 centistokes.
  • Perfluoro ethers having various chemical structures can be used as an essential component in the lubricating oil composition of the present invention.
  • the perfluoro ethers may be any compound represented by the general formula R1-O ⁇ R3-O ⁇ n R2 or may be a mixture thereof.
  • R1 and R2 may be identical with, or different from, each other and each represent a straight-chain or branched-chain perfluoralkyl group having 1-4 carbon atoms
  • R3 represents a straight-­chain or branched-chain perfluoroalkylene group having 1-4 carbon atoms
  • n is an integer of 2 or more, preferably 10-300.
  • R1 and R2 are exemplified by perfluoromethyl group, perfluoroethyl group, perfluoropropyl group, iso-­perfluoropropyl group, perfluorobutyl group, iso-­perfluorobutyl group, sec.-perfluorobutyl group, tert.-­perfluorobutyl group or the like.
  • R3 is exemplified by perfluoromethylene group, perfluoroethylene group, perfluorotrimethylene group, perfluoropropylene group, perfluorotetramethylene group, perfluorobutylene group, perfluoro 1,2-dimethylethylene group, perfluoro 1-­methyltrimethylene group, perfluoro 2-methyltrimethylene group or the like.
  • the perfluoro ether used in the present invention may contain different perfluoroalkylene groups in the molecule.
  • the different perfluoroalkylene groups may form a random copolymer or a block copolymer.
  • the viscosity of the perfluoro ether used in the present invention is not particularly limited, but it is in the range of usually 10-10000 cSt at 20°C, preferably 20-­2000 cSt at 90°C. Further, the average molecular weight of the perfluoro ether is not particularly limited, but it is in the range of usually 500-50000, preferably 1800-10000.
  • the lubricating oil composition of the present invention include the perfluoro ether in an amount by weight of 1-1000 ppm, preferably 3-100 ppm, based on the total weight of the composition.
  • the perfluoro ether will undesirably not exert a satisfactory defoaming effect
  • the perfluoro ether may undesirably be sedimented to be separated from the composition.
  • the lubricating oil compositions of the present invention may further include, as required, known additives for the purpose of further improving them in properties or performances.
  • additives include, for example, antioxidants, detergent-dispersants, viscosity index improvers, pour point depressants, oiliness improvers, wear resistant agents, extreme pressure agents, corrosion inhibitors, metal-deactivators, antifoaming agents (except for the perfluoro ethers mentioned above), emulsifiers, demulsifiers, bactericides and colorants.
  • the lubricating oil compositions of the present invention are also superior in the respect that the perfluoro ethers which are the essential components of said compositions will be less deteriorated by interaction with other additives to be used therewith than the heretofore known antifoaming agents, thereby to enable a wider-range selection of the other additives.
  • the total amount of these various additives used is ordinarily up to 50% by weight, preferably up to 30% by weight, based on the total weight of the composition.
  • the lubricating oils of the present invention may be used as engine oils such as a four-cycle gasoline engine oil, land diesel engine oil, marine diesel engine oil and gas engine oil; turbine oils such as an industrial turbine oil, marine turbine oil and gas turbine oil; gear oils such as an automobile gear oil, industrial gear oil and automatic transmission oil; hydraulic oils; compressor oils; vacuum pump oils; refrigerator oils; metal working oils such as a cutting oil, grinding oil, rolling oil, pressing oil, drawing oil, throttling-ironing oil and forging oil; slide guiding surface oils; bearing oils; and the like.
  • the lubricating oil compositions of the present invention contain a certain small amount of the perfluoro ethers whereby they can be excellent ones which are featured as follows:
  • a perfluoro ether (trade name, Fomblin Y25: viscosity, 250 cSt at 20°C: molecular weight, 3000: produced by Asahi Glass Co., Ltd.) was added in an amount by weight of 30 ppm based on the total oil, to an industrial bearing oil as the base oil (mineral oil-based base oil whose viscosity was 220 cSt at 40°C) to obtain a lubricating oil composition (Example 1), while a silicone oil (viscosity: 3000 cSt at 95°C), instead of the perfluoro ether, was added in an amount by weight of 30 ppm based on the total oil, to the same industrial bearing oil as in Example 1 to obtain a lubricating oil composition (Comparative Example 1).
  • the thus obtained lubricating oil compositions were subjected to the following oxidizing test and then to the following foaming test, respectively. The test conditions are indicated below, and the results of the foaming test are indicated in
  • the oil compositions were each subjected to oxidition at 150°C for 120 hours in accordance with JIS K 2514 3.1.
  • a perfluoro ether (trade name, Fomblin Y45: viscosity, 250 cSt at 20°C: molecular weight, 3000: produced by Asahi Glass Co., Ltd.) was added in an amount by weight of 30 ppm based on the total oil, to an automobile transmission oil as the base oil (mineral oil-based base oil whose viscosity is 14 cSt at 100°C) to obtain a lubricating oil composition (Example 2), while a polyacrylate instead of the perfluoro ether was added in an amount by weight of 200 ppm based on the total oil, to the same automobile transmission oil as in Example 2 to obtain a lubricating oil composition (Comparative Example 2).
  • the thus obtained lubricating oil compositions were subjected to the following oxidizing test and then to the same foaming test as in Example 1, respectively.
  • the oxidizing test conditions are indicated hereunder, and the results of the foaming test are indicated in Table 2.

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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)
  • Lubricants (AREA)
EP90310807A 1989-10-13 1990-10-03 Compositions d'huile lubrifiante Expired - Lifetime EP0422822B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP265222/89 1989-10-13
JP1265222A JPH03126790A (ja) 1989-10-13 1989-10-13 潤滑油組成物

Publications (2)

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EP0422822A1 true EP0422822A1 (fr) 1991-04-17
EP0422822B1 EP0422822B1 (fr) 1993-08-11

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EP (1) EP0422822B1 (fr)
JP (1) JPH03126790A (fr)
DE (1) DE69002724T2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999020721A1 (fr) * 1997-10-21 1999-04-29 Solutia Inc. Compositions d'huile hydrocarbure antimousse
WO2001057165A1 (fr) * 2000-01-31 2001-08-09 Imperial Chemical Industries Plc Composition lubrifiante refrigerante contenant un additif declenchant la generation de mousse
DE10348584B4 (de) * 2002-11-19 2009-11-12 General Motors Corp., Detroit Fluide für automatische Getriebe und deren Verwendung
WO2017012909A1 (fr) * 2015-07-17 2017-01-26 Solvay Specialty Polymers Italy S.P.A. Agents anti-mousse

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008266656A (ja) * 2008-07-04 2008-11-06 Tonengeneral Sekiyu Kk 潤滑油組成物
JP5638430B2 (ja) * 2011-03-18 2014-12-10 Ｊｘ日鉱日石エネルギー株式会社 極微量油剤供給式加工用油剤組成物
JP5638431B2 (ja) * 2011-03-18 2014-12-10 Ｊｘ日鉱日石エネルギー株式会社 金属加工用潤滑油組成物

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FR2099935A5 (fr) * 1970-06-27 1972-03-17 Montedison Spa
EP0337425A1 (fr) * 1988-04-13 1989-10-18 AUSIMONT S.r.l. Additifs antirouilles pour lubrifiants ou graisses à base de perfluoropolyéthers
EP0382224A2 (fr) * 1989-02-09 1990-08-16 AUSIMONT S.p.A. Perfluoropolyéthers ayant des propriétés antirouilles

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FR2099935A5 (fr) * 1970-06-27 1972-03-17 Montedison Spa
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EP0382224A2 (fr) * 1989-02-09 1990-08-16 AUSIMONT S.p.A. Perfluoropolyéthers ayant des propriétés antirouilles

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999020721A1 (fr) * 1997-10-21 1999-04-29 Solutia Inc. Compositions d'huile hydrocarbure antimousse
AU744780B2 (en) * 1997-10-21 2002-03-07 Ucb S.A. Foaming-resistant hydrocarbon oil compositions
US6667373B2 (en) 1997-10-21 2003-12-23 Ucb Chip, Inc. Polymerization process
WO2001057165A1 (fr) * 2000-01-31 2001-08-09 Imperial Chemical Industries Plc Composition lubrifiante refrigerante contenant un additif declenchant la generation de mousse
DE10348584B4 (de) * 2002-11-19 2009-11-12 General Motors Corp., Detroit Fluide für automatische Getriebe und deren Verwendung
WO2017012909A1 (fr) * 2015-07-17 2017-01-26 Solvay Specialty Polymers Italy S.P.A. Agents anti-mousse

Also Published As

Publication number Publication date
DE69002724D1 (de) 1993-09-16
JPH03126790A (ja) 1991-05-29
EP0422822B1 (fr) 1993-08-11
DE69002724T2 (de) 1994-04-07

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