WO2006057273A1 - 潤滑油組成物およびグリース組成物 - Google Patents
潤滑油組成物およびグリース組成物 Download PDFInfo
- Publication number
- WO2006057273A1 WO2006057273A1 PCT/JP2005/021526 JP2005021526W WO2006057273A1 WO 2006057273 A1 WO2006057273 A1 WO 2006057273A1 JP 2005021526 W JP2005021526 W JP 2005021526W WO 2006057273 A1 WO2006057273 A1 WO 2006057273A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- perfluoropolyether
- general formula
- lubricating oil
- composition according
- Prior art date
Links
Classifications
-
- 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
- C10M169/041—Mixtures of base-materials and additives the additives being macromolecular compounds only
-
- 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
- C10M2213/0606—Perfluoro polymers 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
- C10M2225/00—Organic macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2225/04—Organic macromolecular compounds containing phosphorus as ingredients in lubricant compositions obtained by phosphorisation of macromolecualr compounds not containing phosphorus in the monomers
-
- 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
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
-
- 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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- 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
- C10N2040/14—Electric or magnetic purposes
-
- 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
-
- 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
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
Definitions
- the present invention relates to a lubricating oil composition and a grease composition. More specifically, the present invention relates to a lubricating oil composition and a grease composition that are improved in wear resistance and antifouling property against a counterpart material by adding a fluorine-containing organic phosphorus compound.
- Fluorine-containing organophosphorus compounds are used for various additives, mold release agents, etc. because they have good effects of improving solvent resistance, chemical resistance, mold release, friction resistance and wear resistance, etc. Has been.
- Conventionally known and known fluorinated organophosphorus compounds include phosphate-based and phosphonate-based compounds having a linear perfluoroalkyl group. Due to poor compatibility with polyether oil, trifluorochloroethylene polymer oil, etc., there is a limit to use as a base oil for lubricating oil and grease.
- a perfluoropolyether group having one end group as a phosphonic acid ester R1RP 0 (0) has been proposed. This phosphonic acid ester is soluble in a fluorine-based base oil.
- the lubricity is also good, but it is not fully satisfied with the recently demanded lubricity and anti-mold properties.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-27079
- Phosphoric ester-based compounds having perfluoropolyether groups, or aryl phosphates or phosphonates containing or not containing a mono- or polyalkyleneoxide bonding group between phosphorus and a fluorocarbon group, etc. Proposed, however, in these compounds, the fluorine-containing group and the phosphate group form a C-0-P bond, so that hydrolysis easily occurs and the heat resistance and durability are inferior. Therefore, the heat resistance, which is a characteristic inherent in fluorine-based lubricants and greases, cannot be exhibited.
- Patent Document 2 JP-A-6-136379
- Patent Document 3 Japanese Patent Application Laid-Open No. 2002-510697
- An object of the present invention is to provide a lubricating oil and grease based on perfluoropolyether oil by adding a fluorine-containing organic phosphorus compound to perfluoropolyether base oil. It is an object of the present invention to provide a lubricating oil composition and a grease composition that are excellent in anti-wear properties without impairing the heat resistance.
- a strong object of the present invention is to provide a perfluoropolyether base oil with a general formula
- R 1, R 2, R 3, R are hydrogen atoms, alkyl groups, cycloalkyl groups, aryl groups, alkyl groups,
- Lubricating oil composition in which a fluorine-containing polyether diphosphonate ester which is a novel compound is added to a perfluoropolyether base oil, and a dull composition in which a thickener is further added thereto Shows excellent wear resistance and anti-rust properties without compromising the heat resistance inherent in lubricants and greases based on perfluoropolyether oil.
- the fluorine-containing polyether diphosphonic acid ester compound represented by the above general formula has the general formula
- R hydrogen atom or lower alkyl group
- phosphite compound a phosphonic acid ester represented by the above, preferably one or two of trialkyl phosphites.
- phosphite compound [A] or [B] diphosphonic acid ester compounds having the same terminal groups are obtained, and phosphite compounds [A] and [B] that are different from each other are obtained.
- diphosphonic acid ester compounds having different terminal groups are obtained.
- fluorine-containing polyether diphosphonic acid ester compound synthesized as described above examples include the following compounds.
- alkyl group alkylaryl group and aralkyl group, those having an alkyl group having a carbon number of Sl to 10 are generally used. Also, 2 ⁇ a + e ⁇ 8 is specified for ease of synthesis, and b + d ⁇ 28 and l ⁇ c ⁇ 10, preferably 2 ⁇ c ⁇ 10. Derived from synthetic raw materials.
- Rf is a perfluoro lower alkyl group having 1 to 5 carbon atoms, preferably 1 to 3 carbon atoms, such as a perfluoromethyl group, a perfluoroethyl group, and a perfluoropropyl group.
- the group, CF CF O group and CF O group are randomly bonded in the main chain.
- CF 3 O groups are randomly bonded in the main chain, and hexafluoropropene and
- these perfluoropolyether base oils can be used alone or in combination, but when used as a lubricating oil, the viscosity (40 ° C) is about 5 to 2000 mm 2 / Seconds, preferably about 10-1500 mm 2 / sec. If a viscosity lower than this is used, the oil film at high temperature will not be maintained and the lubricated surface will be worn, while those having a viscosity higher than this will have a pour point of OIS K-2283) of 10 ° C. As described above, the bearings, gears, chains, and the like do not start at a low temperature in the normal method, and it is necessary to heat them so that they can be used.
- JIS rolling bearing grease it can also be used as a grease by adding a thickener.
- three types of JIS rolling bearing grease are used as heat-resistant greases with a low viscosity and a high evaporation rate. Those that do not meet the specified evaporation rate of 1.5% or less, while those having a viscosity higher than this, have a pour point (conforming to JIS K-2283) of 10 ° C or higher, as in the case of lubricating oil applications.
- bearings, gears, chains, etc. do not start at low temperatures, and it is necessary to heat them before they can be used.
- the diphosphonic acid ester compound is a composition comprising these two components. It is used in an amount of about 0.1 to 20% by weight, preferably about 0.5 to 5% by weight. If the addition ratio is less than this, a sufficient effect as a lubricating oil cannot be obtained, while performance exceeding the cost performance is not exhibited even if it is used at a ratio higher than this. [0013] By adding a thickener to a powerful lubricating oil composition, a grease composition that is effective in terms of the sealing ability can also be prepared.
- the thickener, polytetramethylene full O b ethylene are found use as lubricant conventionally [PTFE], tetrafurfuryl O Russia ethylene - to Kisafuruoro propene copolymer [F EP], par full O b alkylene ⁇ Etc. are used.
- Polytetrafluoroethylene is produced by a method such as emulsion polymerization, suspension polymerization, or solution polymerization of tetrafluoroethylene, followed by methods such as thermal decomposition, electron beam irradiation decomposition, and physical grinding.
- the number average molecular weight Mn is reduced to about 1000 to 500,000 from about 1,000 to 100,000.
- the copolymerization reaction of tetrafluoroethylene and hexafluoropropene and the low molecular weight treatment are performed in the same manner as in the case of polytetrafluoroethylene, and the number average molecular weight Mn is about 1000 to 600,000. Is used.
- the molecular weight can also be controlled by using a chain transfer agent during the copolymerization reaction.
- the resulting powdered fluorocobalt generally has a melting point of about 250-340 ° C and an average primary particle size of about 500 ⁇ m or less, preferably about 0.1-30 ⁇ m.
- mineral soaps such as Li soap, minerals such as urea resin and bentonite, organic pigments, polyethylene, polypropylene, and polyamide
- aliphatic dicarboxylic acid metal salts for example, dilithium azelate
- monoamide monocarboxylic acid metal salts monoester carboxylic acid metal salts, diurea, triurea, tetraurea and the like are preferably used.
- the fluorine-containing polyether diphosphonic acid ester is used in the composition consisting of these three components in the ratio of about 0.1 to 20% by weight, preferably about 0.5 to 5% by weight, as in the case of the lubricating oil composition.
- the composition further contains other additives such as an acid-proofing agent, a fungicide, a corrosion inhibitor, an extreme pressure agent, an oily agent, and a solid lubricant that have been added to conventional lubricants. It can be added as necessary.
- Antioxidants include, for example, phenolic antioxidants such as 2,6-ditertiarybutyl-4-methylphenol and 4,4'-methylenebis (2,6-ditertiarybutylphenol).
- Amine-based antioxidants such as killiphenylamine, triphenylamine, phenyl- ⁇ -naphthylamine, phenothiazine, alkylated phenyl- ⁇ -naphthylamine, phenthiazine, alkylated phenthiazine, etc. Etc.
- Examples of the antifungal agent include fatty acids, fatty acid amines, alkylsulfonic acid metal salts, alkylsulfonic acid amine salts, oxidized paraffins, polyoxyethylene alkyl ethers, and the like, and examples of corrosion inhibitors include benzotriazole. , Benzimidazole, thiadiazole and the like.
- extreme pressure agents include phosphorus compounds such as phosphate esters, other phosphites and phosphate ester amine salts, thio compounds such as sulfides and disulfides, dialkydithiophosphate metal salts, Examples of such compounds include metal compounds such as dialkyl dithiodicarbamate metal salts.
- oily agent examples include fatty acids or esters thereof, higher alcohols, polyhydric alcohols or esters thereof, aliphatic amines, fatty acid monoglycerides and the like.
- solid lubricants include molybdenum disulfide molybdenum, graphite, boron nitride, and silane nitride.
- the composition can be easily prepared by adding a fluoropolyether diphosphonic acid ester to a perfluoropolyether base oil and stirring.
- a predetermined amount of fluorine-containing polyether diphosphonic acid ester, thickener and other necessary additives synthesized in advance in a perfluoropolyether base oil are added, Thoroughly kneading with a three-roll or high-pressure homogenizer, or
- Base oil A RfO [CF (CF) CF 0] Rf viscosity (40.C) 100 mm 2 / sec
- R, R, R C H
- the base oil and the additive can be easily mixed only by stirring, and thus a lubricating oil composition was prepared.
- Base oil additive
- test piece SUJ2 (l / 2 inch), 20 grade, rotation speed: 20 times / second, load: 392.3N (40 kgl), temperature: room temperature, time: wear under conditions of 60 minutes Conducted the test, The wear scar diameter after the test was measured
- a wet test specimen (material: SPCC-SB, dimensions: 1.2 X 60 X 80mm) is immersed in the lubricating oil composition, and is suspended in a tester tank at a temperature of 49 ⁇ 1 ° C and a humidity of 95% or more. After holding down for 300 hours, take out the specimen, check the degree of occurrence of wrinkles, and display the degree of occurrence according to the following grade
- the following thickener is kneaded by the preparation method of (a) (however, when thickener d is used, the preparation method of (b)), and the grease composition is Prepared.
- Thickener a Emulsion polymerization method PTFE (MnlO ⁇ 200,000, melting point 330 ° C, average primary particle size 0.2 m) // b: Suspension polymerization PTFE (Mnl ⁇ 100,000, melting point 318 ° C, average primary particle size 5 ⁇ m) "c: Solution polymerization FEP (Mn5 ⁇ 150,000, melting point 256 ° C, average primary particle size) 0.2 ⁇ m) // d: Dilithium azelaate LiOOC (CH) COOLi Table 3
- Example 13 A 77.5 I 1.5 a 22.0
- the lubricating composition and grease composition according to the present invention are used in applications where perfluoropolyether oil has been used in the prior art, particularly when lubricity is required to prevent fouling or is exposed to corrosive gases.
- Sliding parts such as rolling bearings, sliding bearings, sintered bearings, gears, valves, Used for sliding parts such as cocks, oil seals, and electrical contacts.
- bearings such as automobile hub units, tiger cushion motors, fuel injection devices, alternators, and the like that require heat resistance, low temperature resistance, and load resistance, automobile power transmission devices, power windows, etc.
- Bearings that require low torque and low outgas such as bearings, sliding parts such as bearings and gears used in vacuum pumps, grease manufacturing equipment, conveyors, wood industry equipment, chrome coating equipment, etc. It is used for electrical contact parts of electronic devices that are used in devices and relay switches.
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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)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05809705.6A EP1845150B1 (en) | 2004-11-25 | 2005-11-24 | Lubricant composition and grease composition |
US11/791,306 US7709424B2 (en) | 2004-11-25 | 2005-11-24 | Lubricating oil composition and grease composition technical field |
JP2006515483A JP4353245B2 (ja) | 2004-11-25 | 2005-11-24 | 潤滑油組成物およびグリース組成物 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-339862 | 2004-11-25 | ||
JP2004339862 | 2004-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006057273A1 true WO2006057273A1 (ja) | 2006-06-01 |
Family
ID=36498009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/021526 WO2006057273A1 (ja) | 2004-11-25 | 2005-11-24 | 潤滑油組成物およびグリース組成物 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7709424B2 (ja) |
EP (1) | EP1845150B1 (ja) |
JP (1) | JP4353245B2 (ja) |
WO (1) | WO2006057273A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018065962A (ja) * | 2016-10-21 | 2018-04-26 | 株式会社ニッペコ | 潤滑剤表面処理剤、異物除去潤滑組成物、異物除去潤滑組成物の製造方法、異物除去潤滑組成物の塗布部材、及び、異物除去潤滑組成物の使用方法 |
JP2018517089A (ja) * | 2015-04-14 | 2018-06-28 | エドワーズ リミテッド | 真空ポンプ用潤滑剤 |
CN110662826A (zh) * | 2017-05-29 | 2020-01-07 | 道康宁东丽株式会社 | 润滑脂组合物以及用其涂覆的滑动构件 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130267448A1 (en) | 2012-04-10 | 2013-10-10 | Lubrication Technology, Inc. | Lubricant for oxygen - enriched environments |
CN105400572A (zh) * | 2015-12-08 | 2016-03-16 | 衢州氟硅技术研究院 | 一种润滑油组合物 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58180597A (ja) * | 1982-04-19 | 1983-10-22 | Nippon Mektron Ltd | 離型剤 |
JPS61254697A (ja) * | 1985-05-07 | 1986-11-12 | Nippon Mektron Ltd | パ−フロロエ−テル系組成物およびその製造方法 |
JP2003027079A (ja) * | 2001-07-18 | 2003-01-29 | Nok Kuluver Kk | 潤滑油組成物 |
JP2003176831A (ja) * | 2001-10-04 | 2003-06-27 | Nsk Ltd | 転がり軸受 |
JP2004108442A (ja) * | 2002-09-17 | 2004-04-08 | Nsk Ltd | 直動装置 |
JP2005154759A (ja) * | 2003-11-05 | 2005-06-16 | Asahi Denka Kogyo Kk | (ジチオ)リン酸エステル系潤滑油添加剤、ならびにこれを含有する潤滑油組成物およびグリース組成物 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3567802A (en) * | 1968-12-03 | 1971-03-02 | Du Pont | Perfluoropolyoxoalkane substttuted phosphinates |
IT1251577B (it) * | 1991-10-02 | 1995-05-17 | Ausimont Spa | Olii e grassi lubrificanti. |
US6184187B1 (en) * | 1998-04-07 | 2001-02-06 | E. I. Dupont De Nemours And Company | Phosphorus compounds and their use as corrosion inhibitors for perfluoropolyethers |
US6828284B2 (en) * | 2001-08-06 | 2004-12-07 | E. I. Du Pont De Nemours And Company | Flourinated compositions comprising phosphorus |
-
2005
- 2005-11-24 US US11/791,306 patent/US7709424B2/en not_active Expired - Fee Related
- 2005-11-24 EP EP05809705.6A patent/EP1845150B1/en not_active Expired - Fee Related
- 2005-11-24 WO PCT/JP2005/021526 patent/WO2006057273A1/ja active Application Filing
- 2005-11-24 JP JP2006515483A patent/JP4353245B2/ja not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58180597A (ja) * | 1982-04-19 | 1983-10-22 | Nippon Mektron Ltd | 離型剤 |
JPS61254697A (ja) * | 1985-05-07 | 1986-11-12 | Nippon Mektron Ltd | パ−フロロエ−テル系組成物およびその製造方法 |
JP2003027079A (ja) * | 2001-07-18 | 2003-01-29 | Nok Kuluver Kk | 潤滑油組成物 |
JP2003176831A (ja) * | 2001-10-04 | 2003-06-27 | Nsk Ltd | 転がり軸受 |
JP2004108442A (ja) * | 2002-09-17 | 2004-04-08 | Nsk Ltd | 直動装置 |
JP2005154759A (ja) * | 2003-11-05 | 2005-06-16 | Asahi Denka Kogyo Kk | (ジチオ)リン酸エステル系潤滑油添加剤、ならびにこれを含有する潤滑油組成物およびグリース組成物 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018517089A (ja) * | 2015-04-14 | 2018-06-28 | エドワーズ リミテッド | 真空ポンプ用潤滑剤 |
US10662955B2 (en) | 2015-04-14 | 2020-05-26 | Edwards Limited | Vacuum pump lubricants |
JP7023713B2 (ja) | 2015-04-14 | 2022-02-22 | エドワーズ リミテッド | 真空ポンプ用潤滑剤 |
JP2018065962A (ja) * | 2016-10-21 | 2018-04-26 | 株式会社ニッペコ | 潤滑剤表面処理剤、異物除去潤滑組成物、異物除去潤滑組成物の製造方法、異物除去潤滑組成物の塗布部材、及び、異物除去潤滑組成物の使用方法 |
CN110662826A (zh) * | 2017-05-29 | 2020-01-07 | 道康宁东丽株式会社 | 润滑脂组合物以及用其涂覆的滑动构件 |
Also Published As
Publication number | Publication date |
---|---|
EP1845150A1 (en) | 2007-10-17 |
EP1845150B1 (en) | 2018-06-20 |
JPWO2006057273A1 (ja) | 2008-06-05 |
US7709424B2 (en) | 2010-05-04 |
US20070298988A1 (en) | 2007-12-27 |
JP4353245B2 (ja) | 2009-10-28 |
EP1845150A4 (en) | 2010-08-04 |
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