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
  • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
  • C10M105/50—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen
  • C10M105/54—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen 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
  • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
  • C10M107/38—Lubricating compositions characterised by the base-material being a macromolecular compound containing halogen
• • 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
  • C10M119/22—Lubricating compositions characterised by the thickener being a macromolecular compound containing halogen
• • 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
  • C10M169/06—Mixtures of thickeners 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
  • 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
  • C10M2207/10—Carboxylix acids; Neutral salts thereof
  • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
  • C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
  • C10M2207/123—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms polycarboxylic
  • C10M2207/1236—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms polycarboxylic used as thickening agent
• • 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
  • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
  • C10M2211/04—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen, halogen, and oxygen
  • C10M2211/042—Alcohols; Ethers; Aldehydes; Ketones
• • 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
  • C10M2213/043—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen, halogen and oxygen 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
  • C10M2213/0606—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
  • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
  • C10M2213/06—Perfluoro polymers
  • C10M2213/062—Polytetrafluoroethylene [PTFE]
  • C10M2213/0626—Polytetrafluoroethylene [PTFE] used as thickening agents
• • 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
  • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
  • C10M2215/10—Amides of carbonic or haloformic acids
  • C10M2215/102—Ureas; Semicarbazides; Allophanates
  • C10M2215/1026—Ureas; Semicarbazides; Allophanates used as thickening 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
  • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
  • C10M2229/04—Siloxanes with specific structure
  • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
  • C10M2229/051—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen
  • C10M2229/0515—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen used as base material
• • 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
  • C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
• • 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
  • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
  • C10N2050/10—Form in which the lubricant is applied to the material being lubricated semi-solid; greasy

Definitions

• the present invention relates to a lubricating grease composition, and more particularly to a lubricating grease composition having a metal surface protective action against corrosive gases such as a sulfide gas, etc.
• Greases are widely used in various machines and tools such as automobiles, electric electronic machines and instruments, construction machinery, industrial machinery, machine tools, information-systems, and also parts as their structural components. Recent trend towards making these machines and tools work faster together with more size reduction, higher performance, and lighter weight, etc., inevitably makes the temperatures of the peripheral machines and tools higher and higher. To meet the requirements for lighter weight, lower cost, tighter sealing, etc., molding products of resins or rubber have been much more used, and also to meet the requirement for further quietness improvement, much tighter sealing is desired.
• the metallic parts are often to be exposed to the atmosphere of corrosive gases generated from components, etc. contained in resins or rubber, for example, a sulfide gas, a hydrogen chloride gas, a sulfer dioxide gas, ammonia, oxygen, etc., due to such use conditions as higher temperatures and tighter sealing and are also often to be exposed to such corrosive gases permeated from the outside due to severe use conditions.
• a sulfide gas for example, a hydrogen chloride gas, a sulfer dioxide gas, ammonia, oxygen, etc.
• a grease comprising a fluorosilicone oil and a fluoro resin to suppress hydrogen sulfide permeation and prevent corrosion of contact materials.
• fluorosilicone oil it is said that such fluorine-containing compounds as fluorocarbon, fluoro ester, fluorine-modified paraffin oil, fluorine-modified ester oil, etc. also have the similar effect.
• fluorine-containing compounds as fluorocarbon, fluoro ester, fluorine-modified paraffin oil, fluorine-modified ester oil, etc. also have the similar effect.
• not all of these fluorine-containing compounds have the effect on the suppression of hydrogen sulfide permeation at the same degree.
• the fluorosilicone oil can suppress the hydrogen sulfide permeation, but has a poor abrasion resistance, resulting in abrasion of contact materials.
• the fluoro ester, fluorine-modified paraffin oil, and fluorine-modified ester oil have a poor heat resistance, and thus cannot be used in a higher temperature atmosphere as a problem.
• Patent Literature 1 JP-A-59-189511
• fluorine-based grease As to the fluorine-based grease, it has been proposed to use a fluorine-based grease comprising a perfluoropolyether oil having repeating units, represented by (CF 2 CF 2 CF 2 O) n , as a base oil to improve the heat resistance and chemical resistance, where no reference is made to the permeation resistance to the corrosive gases.
• a fluorine-based grease comprising a perfluoropolyether oil having repeating units, represented by (CF 2 CF 2 CF 2 O) n , as a base oil to improve the heat resistance and chemical resistance, where no reference is made to the permeation resistance to the corrosive gases.
• Patent Literature 2 JP-B-2-32314
• Patent Literature 3 JP-A-2001-354986
• An object of the present invention is to provide a lubricating grease composition capable of suppressing corrosion of metallic materials, caused by corrosive gases, and also having a heat resistance.
• A perfluoropolyether oil
• the present lubricating grease composition can be effectively used as a metal surface protecting agent for metallic materials to be exposed to the atmosphere of corrosive gases including a sulfide gas (sulfur-containing gases such as a hydrogen sulfide gas, a carbon disulfide gas, etc.), a hydrogen chloride gas, a sulfur dioxide gas, ammonia, etc., together with a satisfactory heat resistance, when used in the fields, to which the perfluoropolyether oil has been so far applied.
• a sulfide gas sulfur-containing gases such as a hydrogen sulfide gas, a carbon disulfide gas, etc.
• the present lubricating grease composition can be used to lubricate and protect sliding parts and contact parts between the individual members of ball-and-roller bearings, plain bearings, sintered bearings, gears, valves, cocks, oil seals, electric contacts, etc.
• the present lubricating grease composition can be used to effectively protect metal surfaces used in the bearings requiring a heat resistance, a low-temperature durability, a load resistance, etc.
• Perfluoropolyether oils (A)-(D) cab be obtained in the following manner, where the perfluoroalkyl group Rf for use herein generally includes a perfluoromethyl group, a perfluoroethyl group, a perfluoropropyl group, etc.
• Perfluoropolyether oil (A) obtainable by complete fluorination of precursor, obtained by photo-oxidation polymerization of hexafluoropropylene, or both of hexafluoropropylene and tetrafluoroethylene, or by fluorine gas treatment of a acid fluoride compound having a terminal CF(CF 3 )COF group resulting from anionic polymerization of hexafluoropropylene oxide or both of hexafluoropropylene oxide and tetrafluoroethylene oxide in the presence of a cesium fluoride catalyst.
• Perfluoropolyether oil (B) obtainable by anionic polymerization of 2,2,3,3-tetrafluorooxetane in the presence of a cesium fluoride catalyst, followed by a fluorine gas treatment of the resulting fluorine-containing polyether (CH 2 CF 2 CF 2 O) n under ultraviolet irradiation at 160°-300° C.
• the perfluoropolyether oils (A) and (B) can prevent permeation of corrosive gases (a sulfide gas, a hydrogen chloride gas, a sulfur dioxide gas, ammonia, etc.), compared with perfluoropolyether oils of other structures.
• the suppression effect on corrosive gases is due to the C—F bonds in the molecule.
• Perfluoropolyether oil (C) of other structure having random bonds of CF 2 O groups has the highest viscosity index, a low volatility, and a low friction coefficient among the perfluoropolyether oils, but the presence of CF 2 O groups in the molecule weakens the permeation effect of C—F bonds on corrosive gases, resulting in corrosion of metallic pieces.
• perfluoropolyether oil (D) containing CF 2 O groups has a distinguished abrasion resistance, but permits permeation of corrosive gases, resulting in corrosion of metals.
• At least one of perfluoropolyether oils (A) and (B) is mixed with perfluoropolyether oils of other structures containing random bonds CF 2 O groups to make a base oil, thereby providing the base oil with properties having both advantages.
• a mixture of 100 parts by weight of at least one of perfluoropolyether oils (A) and (B) with 0-100 parts by weight, preferably 2-100 parts by weight, more preferably 5-75 parts by weight, of at least one of perfluoropolyether oils (C) and (D) of other structures having a random bond of CF 2 O groups can prevent permeation of corrosive gases and also can show a low friction property.
• component (C) has such characteristics as a high viscosity index, a low volatility, a low friction coefficient, etc., and these advantages can be given to the lubricating grease composition by using component (C) together with components (A) and (B). Under more severe conditions, a proportion of perfluoropolyether oils (C) and (D) of other structures having a random bond of CF 2 O groups can be reduced.
• perfluoropolyether oils (A) and (B) property containing ether bonds in the molecule and having a random bond of CF(CF 3 )CF 2 O groups and CF 2 CF 2 O groups in the main chain can have such characteristics as good viscosity index, abrasion resistance and friction resistance together, while maintaining a distinguished suppression effect on the permeation of corrosive gases, whereby a reduction effect on the corrosion or abrasion at contact parts can be brought about.
• These two perfluoropolyether oils (A) and (B) can be used as a base oil upon mixing in any desired proportion thereof.
• Base oil consisting of these perfluoropolyether oils (A), (B), (C), and (D) having a dynamic viscosity of 5-2,000 mm 2 /sec., preferably 5-1,500 mm 2 /sec. at 40° C. (as determined according to JIS K2283) can be used.
• the dynamic viscosity is less than 5 mm 2 /sec., there are high risks of increasing the evaporation loss, lowering the oil film strength, etc. and giving rise to such inconveniences as lowering of the life, and causing abrasion and seizure.
• Above 2,000 mm 2 /sec. on the other hand, there are high risks of increasing a viscous drag, etc. and giving rise to such inconveniences as increased power consumption or torque.
• a portion of the perfluoropolyether oils (A) and (B) can be replaced with poly( ⁇ -olefin) oil, etc. having such a dynamic viscosity as in the above-mentioned range.
• the base oil can further contain a thickening agent, and the preferable thickening agent is fluoro resin.
• the fluoro resin for use herein includes polytetrafluoroethylene, tetrafluoroethylene-hexafluropropene copolymer, perfluoroalkylene resin, etc., which have been so far used as a lubricant.
• Polytetrafluoroethylene for use herein is those having a number average molecular weight Mn of about 1,000 to about 500,000, prepared by emulsion polymerization, suspension polymerization, solution polymerization, or the like of tetrafluoroethylene, thereby forming polytetrafluoroethylene having a number average molecular weight Mn of about 1,000 to about 1,000,000, followed by a thermal decomposition treatment, a decomposition treatment by electron beam irradiation, a physical pulverizing treatment or the like.
• Copolymerization reaction of tetrafluoroethylene and hexafluoropropene, and successive treatment of making the molecular weight lower can be carried out in the same manner as in the case of polytetrafluoroethylene, and the copolymers having a number average molecular weight Mn of about 1,000 to about 600,000 can be used. Control of the molecular weight can be also made by use of a chain transfer agent at copolymerization reaction.
• the resulting powdery fluoro resin has an average primary particle size of generally about 500 ⁇ m or less, preferably about 0.1-30 ⁇ m.
• thickening agents for use herein than the fluoro resin include metal soap such as Li soap, etc., urea resin, minerals such as bentonite, etc., organic pigments, polyethylene, polypropylene, polyamide, etc., and it is preferable from the viewpoint of heat resistance and lubricability to use aliphatic dicarboxylic acid metal salts, monoamide monocarboxylic acid metal salts, monoester carboxylic acid metal salts, diurea , triurea, tetraurea, etc.
• powdery fluoro resin, metal soap, urea, and other thickening agents can be admixed in a proportion of 0.1-50% by weight, preferably 10-40% by weight, on the basis of the total of the composition consisting of the base oil of perfluoropolyether oils and the thickening agents. Above 50% by weight, the composition will be too hard, whereas below 0.1% by weight the thickening effect of the fluoro resin is not brought about, resulting in deterioration of base oil such as separation of oil, and any increase in the scattering and leakage prevention is no more expectable.
• the lubricating grease composition can further contain such additives so far added to the lubricant as an antioxidant, an antirust agent, a corrosion inhibitor, an extreme pressure agent, an oiliness agent, a solid lubricant, etc.
• the antioxidant includes, for example, a phenol-based antioxidant such as 2,6-di-t-butyl-4-methylphenol, 4,4′ -methylenebis(2,6-di-t-butylphenol), etc., and an amine-based antioxidant such as alkyldi-phenylamine, triphenylamine, phenyl- ⁇ -naphthylamine, phenothiazine, alkylated- ⁇ -naphthylamine, phenithiazine, alkylated phenithiazine, etc.
• the antirust agent includes, for example, fatty acid, fatty acid amine, alkylsulfonic acid metal salts, alkylsulfonic acid amine salts, oxidized paraffin, polyoxyethylene alkyl ethers, etc.
• the corrosion inhibitor includes, for example, benzotriazole, benzimidazole, thiadiazole, etc.
• the extreme pressure agent includes, for example, a phosphorus-based compound such as phosphoric acid esters, phosphorous acid esters, phosphoric acid amine salts, etc., a sulfur-based compound such as sulfides, disulfides, etc., dialkyldithiophosphoric acid metal salts, dialkyldithiocarbamic acid metal salts, etc.
• a phosphorus-based compound such as phosphoric acid esters, phosphorous acid esters, phosphoric acid amine salts, etc.
• a sulfur-based compound such as sulfides, disulfides, etc., dialkyldithiophosphoric acid metal salts, dialkyldithiocarbamic acid metal salts, etc.
• the oiliness agent includes, for example, fatty acids or their esters, higher alcohols, polyhydric alcohols or their esters, aliphatic amines, aliphatic acid monoglycerides, etc.
• the solid lubricant includes, for example, molybdenum disulfide, graphite, boron nitride, silane nitride, etc.
• the composition can be prepared in the following manner (a) by admixing a predetermined amount of perfluoropolyether base oil with a predetermined amount of a thickening agent, followed by thorough kneading through three rolls or by a high pressure homogenizer, (b) by adding perfluoropolyether oils and aliphatic carboxylic acid to a heatable, stirrable reactor vessel, thereby heating and melting the mixture, and adding a predetermined amount of a metal hydroxide (and an amide compound or an alcohol compound) thereto, thereby conducting a metal salt-forming reaction (and amidation reaction or esterification reaction), followed by cooling and thorough kneading through three rolls or by a high pressure homogenizer, or (c) by adding perfluoropolyether oils and an isocyanate to a heatable, stirrable reactor vessel, heating the mixture, and adding a predetermined amount of an amine thereto, thereby conducting reaction, followed by cooling and thorough kneading through three
• A-1 RfO[CF(CF 3 )CF 2 O] p Rf (component A) 100 mm 2 /sec.
• A-2 RfO[CF(CF 3 )CF 2 O] p Rf (component A) 400 mm 2 /sec.
• A-3 RfO[CF(CF 3 )CF 2 O] a (CF 2 O) c Rf (component D) 400 mm 2 /sec.
• A-5 F(CF 2 CF 2 CF 2 O) s C 2 F 5 (component B) 65 mm 2 /sec.
• A-6 poly( ⁇ -olefin) oil 30 mm 2 /sec.
• A-7 fluorosilicone oil 300 mm 2 /sec.
• Lubricating grease composition were prepared from combinations of the foregoing base oils and thickening agents, and subjected to evaluation of properties of the compositions according to the following test procedures

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Emergency Medicine (AREA)
• Lubricants (AREA)

Applications Claiming Priority (4)

Related Parent Applications (1)

Related Child Applications (1)

Publications (1)

Family

ID=43124944

Family Applications (2)

Family Applications After (1)

Country Status (3)

Cited By (9)

Families Citing this family (3)

Citations (5)

Family Cites Families (13)

• 2004
  • 2004-06-25 JP JP2004187354A patent/JP4613530B2/ja not_active Expired - Lifetime
• 2005
  • 2005-06-20 US US11/630,463 patent/US20070213240A1/en not_active Abandoned
  • 2005-06-20 WO PCT/JP2005/011257 patent/WO2006001248A1/ja not_active Ceased
• 2010
  • 2010-04-19 US US12/762,527 patent/US8067344B2/en not_active Expired - Fee Related

Patent Citations (5)

Also Published As

Similar Documents

Legal Events