EP0504897A1 - Grease composition - Google Patents

Grease composition Download PDF

Info

Publication number
EP0504897A1
EP0504897A1 EP92104809A EP92104809A EP0504897A1 EP 0504897 A1 EP0504897 A1 EP 0504897A1 EP 92104809 A EP92104809 A EP 92104809A EP 92104809 A EP92104809 A EP 92104809A EP 0504897 A1 EP0504897 A1 EP 0504897A1
Authority
EP
European Patent Office
Prior art keywords
composition
grease
grease composition
antiwear additive
parts
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.)
Withdrawn
Application number
EP92104809A
Other languages
German (de)
French (fr)
Inventor
Koitsu Ito
Tetsuji Yamaguchi
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.)
DuPont Toray Specialty Materials KK
Original Assignee
Dow Corning Asia Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dow Corning Asia Ltd filed Critical Dow Corning Asia Ltd
Publication of EP0504897A1 publication Critical patent/EP0504897A1/en
Withdrawn legal-status Critical Current

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
    • C10M131/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen
    • C10M131/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen containing carbon, hydrogen and halogen only
    • C10M131/04—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen containing carbon, hydrogen and halogen only aliphatic
    • 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
    • C10M107/02—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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/50—Lubricating compositions characterised by the base-material being a macromolecular compound containing silicon
    • 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
    • C10M117/00—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof
    • C10M117/02—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
    • 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
    • C10M117/00—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof
    • C10M117/02—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
    • C10M117/04—Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen containing hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • 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
    • 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
    • C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers 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
    • C10M2207/122—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms monocarboxylic
    • C10M2207/1225—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms monocarboxylic 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
    • 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
    • C10M2207/124—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms containing hydroxy groups; Ethers thereof
    • C10M2207/1245—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms containing hydroxy groups; Ethers thereof 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
    • 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
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
    • C10M2207/1265—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic 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
    • 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
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
    • C10M2207/1285—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/16—Naphthenic acids
    • C10M2207/166—Naphthenic acids 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/18—Tall oil acids
    • C10M2207/186—Tall oil acids 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/20—Rosin acids
    • C10M2207/206—Rosin acids 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/24—Epoxidised acids; Ester derivatives thereof
    • C10M2207/246—Epoxidised acids; Ester derivatives thereof 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
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen 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
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
    • C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
    • 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
    • C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
    • C10M2211/024—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aromatic
    • 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
    • C10M2211/06—Perfluorinated compounds
    • 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
    • C10M2229/02—Unspecified siloxanes; Silicones
    • C10M2229/025—Unspecified siloxanes; Silicones 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
    • 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
    • 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
    • C10M2229/0405—Siloxanes with specific structure 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
    • 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
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • 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
    • C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
    • C10M2229/0415—Siloxanes with specific structure containing aliphatic substituents 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
    • 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
    • C10M2229/042—Siloxanes with specific structure containing aromatic substituents
    • C10M2229/0425—Siloxanes with specific structure containing aromatic substituents 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
    • 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
    • C10M2229/043—Siloxanes with specific structure containing carbon-to-carbon double bonds
    • 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
    • C10M2229/043—Siloxanes with specific structure containing carbon-to-carbon double bonds
    • C10M2229/0435—Siloxanes with specific structure containing carbon-to-carbon double bonds 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
    • 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
    • C10M2229/044—Siloxanes with specific structure containing silicon-to-hydrogen bonds
    • 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
    • C10M2229/044—Siloxanes with specific structure containing silicon-to-hydrogen bonds
    • C10M2229/0445—Siloxanes with specific structure containing silicon-to-hydrogen bonds 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
    • 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
    • C10M2229/045—Siloxanes with specific structure containing silicon-to-hydroxyl bonds
    • C10M2229/0455—Siloxanes with specific structure containing silicon-to-hydroxyl bonds 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
    • 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
    • C10M2229/046—Siloxanes with specific structure containing silicon-oxygen-carbon bonds
    • C10M2229/0465—Siloxanes with specific structure containing silicon-oxygen-carbon bonds 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
    • 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
    • C10M2229/047—Siloxanes with specific structure containing alkylene oxide groups
    • C10M2229/0475—Siloxanes with specific structure containing alkylene oxide groups used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • C10M2229/048—Siloxanes with specific structure containing carboxyl groups
    • C10M2229/0485—Siloxanes with specific structure containing carboxyl groups used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • 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
    • C10M2229/0505—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon 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
    • 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
    • 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
    • C10M2229/052—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen
    • C10M2229/0525—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen 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
    • 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
    • C10M2229/053—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur
    • C10M2229/0535—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur 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
    • 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
    • C10M2229/054—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus
    • C10M2229/0545—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus 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
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties

Definitions

  • This invention relates to grease compositions. More particularly, this invention relates to grease compositions containing an additive that imparts excellent low temperature properties and anti-wear performance to the composition.
  • One class of additives can be characterized as chlorinated organic compounds and includes the esters of chlorendic acid described in U.S. Patent No. 3,759,857, which issued on September 18, 1973.
  • the esters are added to liquid polydiorganosiloxanes to improve the performance of the resultant lubricant composition.
  • These compositions exhibit good thermal stability and excellent lubricating characteristics under extremely high pressures, however their low temperature lubricating performance is relatively poor and an additional improvement in the antiwear performance of the compositions would be desirable.
  • One objective of this invention is to define a class of compounds that improve the antiwear and low temperature performance of prior art grease compositions, particularly those described in the aforementioned U.S. Patent No. 3,759,857.
  • a phenyl substituted hexachlorobicyclo[2,2,1]-hept-2-ene to a conventional grease composition
  • a base oil such as an organic oil or a liquid polyorganosiloxane
  • a thickener such as an organic oil or a liquid polyorganosiloxane
  • This invention provides an improved grease composition
  • a base oil selected from the group consisting of organic oils and liquid polyorganosiloxanes, a thickener and at least 1 weight percent, based on the total weight of said composition, of an antiwear additive.
  • the improvement consists essentially of selecting as the antiwear additive at least compound of the formula (I), where R1, R2, R3, R4, and R5 are individually selected from the group consisting of hydrogen, bromine and chlorine.
  • the chacterizing feature of the present grease compositions is the presence of an antiwear additive represented by formula (I).
  • an antiwear additive represented by formula (I).
  • one of the substituents represented by R1 - R5 in formula (I) represents a hydrogen atom and the other four substituents represent bromine atoms.
  • a particularly preferred additive is 1,2,3,4,7,7-hexachloro-5-(3',4',5',6'-tetrabromophenyl)-bicyclo[2,2,-1]hept-2-ene, represented by formula (II)
  • the antiwear additive constitutes at least one percent, preferably from 5 to about 30 percent, of the total weight of the present compositions.
  • the present grease compositions comprise a homogeneous blend of a base oil, a thickening agent and, and at least one antiwear additive represented by formula (I).
  • the grease composition may optionally contain additional ingredients conventionally present in grease compositions. These additional ingredients include but are not limited to surfactants, dyes, pigments, and dispersing agents.
  • the base oil used in the present compositions includes one or more liquid polyorganosiloxanes, also referred to as silicone oils, mineral oils and synthetic organic oils.
  • the thickener in the present compositions can be any of those known in the grease art, including but not limited to fatty acid soaps, silica, polytetrafluoroethylene, carbon black, lithium soaps, clay, copper phthalocyanine, ammeline, indanthrene blue, allyl-substituted urea, aromatic ureas, aromatic diureas, aromatic amides, aromatic diamides, cyanuramide, and cyanurodiamide.
  • the relative amounts of base oil and thickener are not specifically restricted, and are selected to provide a grease of the desired consistency.
  • Preferred embodiments of the present compositions contain a silicone oil as the base oil, a lithium salt of a fatty acid, also referred to as a lithium soap, or silica as the thickener and an antiwear additive represented by formula (II)
  • compositions can be prepared by either of the following methods:
  • the temperature When it is desired to heat the ingredients during the blending operation, the temperature must not exceed the decomposition temperature of the antiwear additive.
  • a mixture containing 69.84 parts of a polymethylphenylsiloxane exhibiting a viscosity of 500 centistokes (5 x 10-4 m2/sec), 19.71 parts of lithium stearate and 0.45 percent of a dye was mixed with heating at 200 o C for 10 minutes.
  • Ten parts of an antiwear additive of the formula was then added with mixing to produce a grease composition of this invention.
  • a grease composition of this invention was prepared as described in Example 1 using the ingredients of Example 1 in the following amounts: 62.08 parts of the polymethylphenylsiloxane, 17.52 parts of lithium stearate, 0.4 parts of dye and 20 parts of the antiwear additive.
  • Example 2 For comparative purposes a grease composition was prepared as described in Example 1 but omitting the antiwear additive.
  • the composition contained 77.6 weight percent of the polyorganosiloxane, 21.9 weight percent lithium stearate and 0.50 weight percent dye.
  • a grease composition was prepared using the ingredients and procedure described in Example 1, but using 10 parts of butyl chlorendate, described as a grease additive in U.S. Patent No. 3,759,827, in place of the antiwear additive of the present invention.
  • a grease composition of this invention was prepared by mixing for 30 minutes with heating at 180 o C 83.6 parts of a poly- ⁇ -olefin oil having a viscosity of 28.8 centistokes (2.88 x 10 ⁇ 5 m2/sec.) and 11.41 parts lithium-12-hydroxystearate. 5,.0 parts of the antiwear additive corresponding to formula (II) in Example 1 was added to the resultant mixture with stirring to form the grease composition.
  • a grease composition of this invention was prepared as described in Example 3 using 79.2 parts of the poly- ⁇ -olefin oil, 10.89 parts of the lithium compound and 10 parts of the antiwear additive.
  • Example 3 For comparative purposes a grease composition was prepared as described in Example 3 without the antiwear additive.
  • the composition contained 88.0 weight percent of the poly- ⁇ -olefin oil and 12.0 weight percent lithium 12-hydroxystearate.
  • the grease compositions prepared in the preceding examples and comparison examples were subjected to lubrication testing under the following conditions to measure the LFW-1 wear scar and the amount of wear. In addition, the low-temperature performance was examined by measuring the low-temperature torque.
  • the low-temperature torque was measured at -40 o C during start up and rotation using the tester specified in Japanese Industrial Standard (JIS) K-2220.

Landscapes

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

Abstract

The addition of a phenyl- or halophenyl-substituted hexachlorobicyclo-[2.2.1]hept-2-ene to a conventional grease composition comprising a base oil, such as an organic oil or a liquid polyorganosiloxane, and a thickener improves both the antiwear performance and low temperature lubricating properties of the composition.

Description

  • This invention relates to grease compositions. More particularly, this invention relates to grease compositions containing an additive that imparts excellent low temperature properties and anti-wear performance to the composition.
  • Numerous additives have been proposed to impart antiwear properties to grease composition. One class of additives can be characterized as chlorinated organic compounds and includes the esters of chlorendic acid described in U.S. Patent No. 3,759,857, which issued on September 18, 1973. The esters are added to liquid polydiorganosiloxanes to improve the performance of the resultant lubricant composition. These compositions exhibit good thermal stability and excellent lubricating characteristics under extremely high pressures, however their low temperature lubricating performance is relatively poor and an additional improvement in the antiwear performance of the compositions would be desirable.
  • One objective of this invention is to define a class of compounds that improve the antiwear and low temperature performance of prior art grease compositions, particularly those described in the aforementioned U.S. Patent No. 3,759,857.
  • The objectives of the present invention are achieved by the addition of a phenyl substituted hexachlorobicyclo[2,2,1]-hept-2-ene to a conventional grease composition comprising a base oil, such as an organic oil or a liquid polyorganosiloxane, and a thickener.
  • This invention provides an improved grease composition comprising a base oil selected from the group consisting of organic oils and liquid polyorganosiloxanes, a thickener and at least 1 weight percent, based on the total weight of said composition, of an antiwear additive. The improvement consists essentially of selecting as the antiwear additive at least compound of the formula (I),
    Figure imgb0001
    where R¹, R², R³, R⁴, and R⁵ are individually selected from the group consisting of hydrogen, bromine and chlorine.
  • The chacterizing feature of the present grease compositions is the presence of an antiwear additive represented by formula (I). In preferred embodiments of this additive, one of the substituents represented by R¹ - R⁵ in formula (I) represents a hydrogen atom and the other four substituents represent bromine atoms. A particularly preferred additive is 1,2,3,4,7,7-hexachloro-5-(3',4',5',6'-tetrabromophenyl)-bicyclo[2,2,-1]hept-2-ene, represented by formula (II)
    Figure imgb0002
  • The antiwear additive constitutes at least one percent, preferably from 5 to about 30 percent, of the total weight of the present compositions.
  • The present grease compositions comprise a homogeneous blend of a base oil, a thickening agent and, and at least one antiwear additive represented by formula (I). The grease composition may optionally contain additional ingredients conventionally present in grease compositions. These additional ingredients include but are not limited to surfactants, dyes, pigments, and dispersing agents.
  • The base oil used in the present compositions includes one or more liquid polyorganosiloxanes, also referred to as silicone oils, mineral oils and synthetic organic oils.
  • The thickener in the present compositions can be any of those known in the grease art, including but not limited to fatty acid soaps, silica, polytetrafluoroethylene, carbon black, lithium soaps, clay, copper phthalocyanine, ammeline, indanthrene blue, allyl-substituted urea, aromatic ureas, aromatic diureas, aromatic amides, aromatic diamides, cyanuramide, and cyanurodiamide.
  • The relative amounts of base oil and thickener are not specifically restricted, and are selected to provide a grease of the desired consistency.
  • Preferred embodiments of the present compositions contain a silicone oil as the base oil, a lithium salt of a fatty acid, also referred to as a lithium soap, or silica as the thickener and an antiwear additive represented by formula (II)
  • The present compositions can be prepared by either of the following methods:
    • (1) the present antiwear additive is blended into a grease base of the desired consistency that has been previously prepared from a base oil of the appropriate viscosity and a suitable thickener; or
    • (2) the antiwear additive, base oil and thickener are blended in a single operation.
  • When it is desired to heat the ingredients during the blending operation, the temperature must not exceed the decomposition temperature of the antiwear additive.
  • The following examples describe preferred embodiments of the present grease compositions, and should not be interpreted as limiting the scope of the invention defined in the accompanying claims. All parts and percentages are by weight and viscosities were measured at 25o C.
    • Example 1
  • A mixture containing 69.84 parts of a polymethylphenylsiloxane exhibiting a viscosity of 500 centistokes (5 x 10-4 m²/sec), 19.71 parts of lithium stearate and 0.45 percent of a dye was mixed with heating at 200o C for 10 minutes. Ten parts of an antiwear additive of the formula
    Figure imgb0003
    was then added with mixing to produce a grease composition of this invention.
    • Example 2
  • A grease composition of this invention was prepared as described in Example 1 using the ingredients of Example 1 in the following amounts:
    62.08 parts of the polymethylphenylsiloxane,
    17.52 parts of lithium stearate,
    0.4 parts of dye and
    20 parts of the antiwear additive.
    • Comparison Example 1
  • For comparative purposes a grease composition was prepared as described in Example 1 but omitting the antiwear additive. The composition contained 77.6 weight percent of the polyorganosiloxane, 21.9 weight percent lithium stearate and 0.50 weight percent dye.
    • Comparison Example 2
  • For comparative purposes a grease composition was prepared using the ingredients and procedure described in Example 1, but using 10 parts of butyl chlorendate, described as a grease additive in U.S. Patent No. 3,759,827, in place of the antiwear additive of the present invention.
    • Example 3
  • A grease composition of this invention was prepared by mixing for 30 minutes with heating at 180o C 83.6 parts of a poly-α -olefin oil having a viscosity of 28.8 centistokes (2.88 x 10⁻⁵ m²/sec.) and 11.41 parts lithium-12-hydroxystearate. 5,.0 parts of the antiwear additive corresponding to formula (II) in Example 1 was added to the resultant mixture with stirring to form the grease composition.
    • Example 4
  • A grease composition of this invention was prepared as described in Example 3 using 79.2 parts of the poly-α-olefin oil, 10.89 parts of the lithium compound and 10 parts of the antiwear additive.
    • Comparison Example 3
  • For comparative purposes a grease composition was prepared as described in Example 3 without the antiwear additive. The composition contained 88.0 weight percent of the poly-α-olefin oil and 12.0 weight percent lithium 12-hydroxystearate.
  • The grease compositions prepared in the preceding examples and comparison examples were subjected to lubrication testing under the following conditions to measure the LFW-1 wear scar and the amount of wear. In addition, the low-temperature performance was examined by measuring the low-temperature torque.
  • To measure LFW-1 wear amount the testing machine specified in ASTM D 2714-68 was used. The measurement conditions were as follows: speed = 1,200 rpm, sliding velocity = 2.2 m/second, test time = 240 seconds, load = 13.59 kg, type of contact = line contact. To measure wear scar the 4-ball wear tester specified in ASTM D 2266 was used. The measurement conditions were as follows: speed = 1,200 rpm, sliding velocity = 2.2 m/second, test time = 1 hour, load = 40 kg, type of contact = point contact.
  • The low-temperature torque was measured at -40o C during start up and rotation using the tester specified in Japanese Industrial Standard (JIS) K-2220.
  • The test results are reported in Table 1. Table 1
    grease composition LFW-1 wear amount (mg) wear scar (mm) low-temperature during start-up torque (gfm) during rotation
    Example 1 3.8 - 1,100 360
    Example 2 2.9 - - -
    Comparison Example 1 6.1 - 940 300
    Comparison Example 2 4.1 - 2,340 1,270
    Example 3 - 0.46 - -
    Example 4 - 0.43 - -
    Comparison Example 3 - 0.70 - -

Claims (1)

  1. In an improved grease composition comprising a base oil selected from the group consisting of organic oils and liquid polyorganosiloxanes, a thickener and at least 1 weight percent, based on the total weight of said composition, of an antiwear additive, the improvement comprising the presence in said composition of an antiwear additive of the formula
    Figure imgb0004
     where R¹, R², R³, R⁴, and R⁵ are individually selected from the group consisting of hydrogen, bromine and chlorine.
EP92104809A 1991-03-19 1992-03-19 Grease composition Withdrawn EP0504897A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP78340/91 1991-03-19
JP3078340A JPH07113114B2 (en) 1991-03-19 1991-03-19 Grease composition

Publications (1)

Publication Number Publication Date
EP0504897A1 true EP0504897A1 (en) 1992-09-23

Family

ID=13659255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92104809A Withdrawn EP0504897A1 (en) 1991-03-19 1992-03-19 Grease composition

Country Status (2)

Country Link
EP (1) EP0504897A1 (en)
JP (1) JPH07113114B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2869911A1 (en) * 2004-05-05 2005-11-11 Rhodia Chimie Sa HIGH COHESION SILICONE GREASE WITH COLD

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072571A (en) * 1958-06-13 1963-01-08 Texaco Inc Calcium base greases containing chlorinated bicycloheptene compounds
US3759827A (en) 1970-09-29 1973-09-18 Dow Corning Lubricant compositions
US3759857A (en) 1970-06-23 1973-09-18 Labofina Sa Cross linking of acrylamide polymers
EP0248641A2 (en) * 1986-06-02 1987-12-09 Shin-Etsu Chemical Co., Ltd. Silicone grease composition

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072571A (en) * 1958-06-13 1963-01-08 Texaco Inc Calcium base greases containing chlorinated bicycloheptene compounds
US3759857A (en) 1970-06-23 1973-09-18 Labofina Sa Cross linking of acrylamide polymers
US3759827A (en) 1970-09-29 1973-09-18 Dow Corning Lubricant compositions
EP0248641A2 (en) * 1986-06-02 1987-12-09 Shin-Etsu Chemical Co., Ltd. Silicone grease composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2869911A1 (en) * 2004-05-05 2005-11-11 Rhodia Chimie Sa HIGH COHESION SILICONE GREASE WITH COLD
WO2005121287A1 (en) * 2004-05-05 2005-12-22 Rhodia Chimie High cold cohesion silicone-based grease composition

Also Published As

Publication number Publication date
JPH0586384A (en) 1993-04-06
JPH07113114B2 (en) 1995-12-06

Similar Documents

Publication Publication Date Title
DE69019844T2 (en) Grease composition.
DE69004191T2 (en) Grease composition for a smooth high-speed bearing.
US3759827A (en) Lubricant compositions
US4842753A (en) Silicone grease composition
US4840739A (en) Adhesive grease composition comprising a random copolymer of ethylene and an alpha-olefin
EP1961801A1 (en) Grease composition and bearing
US2640812A (en) Grease
US5908815A (en) Heat resistant grease
EP0751207A2 (en) Fluorosilicone formulations
US5192458A (en) Silicone grease composition including an organomolybdenum compound
KR20010023924A (en) Lubricating compositions
US6541427B1 (en) Lubricant for maintenance-free cardan shafts
US4065395A (en) Aryl diurea-thickened greases
JP2728736B2 (en) Urea grease composition
JP4898022B2 (en) Lubricating grease composition
JP2960561B2 (en) Grease composition for resin speed reducer
EP0504897A1 (en) Grease composition
JPS60231796A (en) Urea grease composition
JPH06279777A (en) Silicone grease composition
US3725279A (en) Polyurea thickened grease
JP2553142B2 (en) Urea grease composition
JPH03179094A (en) Reduction gear lubricant composition
US3235500A (en) Grease composition
JPH0692592B2 (en) Urea grease composition
US5585335A (en) Imide and pyrrolidone grease thickeners with terephthalate complexing agent

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

17P Request for examination filed

Effective date: 19921124

18W Application withdrawn

Withdrawal date: 19930524

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

R18W Application withdrawn (corrected)

Effective date: 19930524