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
  • C10M119/00—Lubricating compositions characterised by the thickener being a macromolecular compound
  • C10M119/24—Lubricating compositions characterised by the thickener being a macromolecular compound containing nitrogen
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/2805—Compounds having only one group containing active hydrogen
  • C08G18/285—Nitrogen containing compounds
  • C08G18/2865—Compounds having only one primary or secondary amino group; Ammonia
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
  • C08G18/30—Low-molecular-weight compounds
  • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
  • C08G18/3225—Polyamines
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G18/00—Polymeric products of isocyanates or isothiocyanates
  • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
  • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
  • C08G18/72—Polyisocyanates or polyisothiocyanates
  • C08G18/80—Masked polyisocyanates
  • C08G18/8061—Masked polyisocyanates masked with compounds having only one group containing active hydrogen
  • C08G18/807—Masked polyisocyanates masked with compounds having only one group containing active hydrogen with nitrogen containing compounds
  • C08G18/808—Monoamines
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
  • C08L75/02—Polyureas
• • 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
  • C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/28—Esters
  • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/28—Esters
  • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/28—Esters
  • C10M2207/283—Esters of polyhydroxy compounds
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/28—Esters
  • C10M2207/286—Esters of polymerised unsaturated acids
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
  • C10M2207/28—Esters
  • C10M2207/34—Esters having a hydrocarbon substituent of thirty or more carbon atoms, e.g. substituted succinic acid derivatives
• • 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
  • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
  • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated 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
  • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
  • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated 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
  • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
  • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene 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
  • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
  • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
  • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
  • C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
• • 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
• • 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
  • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
  • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • C10M2217/042—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds between the nitrogen-containing monomer and an aldehyde or ketone
• • 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
  • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
  • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • C10M2217/043—Mannich bases
• • 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
• • 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
• • 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
  • 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
• • 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
  • C10N2070/00—Specific manufacturing methods for lubricant compositions

Definitions

• Greases in accordance with US. Pat. No. 3 243 372 are produced by dissolving a di-isocyanate in the lubricating oil which is to be thickened, optionally by making use of a further solvent, adding amines to this mixture and then heating the total mixture, the polyurea being formed in situ.
• Greases with polyureas as thickeners are chemically resistant to water and oxidation; they decompose under the action of heat only at relatively high temperatures.
• Greases with such polyureas as thickeners are chemically resistant to water, oxidation and the action of heat; they also possess good load-bearing capacity and mechanical stability. Furthermore they are distinguished by a reduced tendency to gel or harden.
• a process for the production of a polyurea which process comprises reacting a monoamino, a diamino and a di-isocyanate component at a temperature in the range 20 to lC wherein a. the monoamino component comprises a mixture of at least two members selected from different groups of general formulae:
• R is a monovalent aliphatic radical containing 12 to 24 carbon atoms
• R2 is a monovalent aromatic radical
• R is a monovalent aliphatic radical containing 2 to 10 carbon atoms
• R is a divalent aliphatic radical containing 2 to 4 carbon atoms
• the diamino component comprises a dioxa-alkane diamine or a mixture of dioxa-alkanediamines of general formula:
• R and R are divalent aliphatic radicals containing 2 to 4 carbon atoms and R is a divalent aliphatic radical containing 2 to 10 carbon atoms
• the di-isocyanate component comprises an aromatic di-isocyanate or a mixture of aromatic diisocyanates.
• a process for the production of a grease which process comprises reacting a monoamino, a diamino and a di-isocyanate component in a lubricating oil at a temperature in the range 20to 150C wherein (a) the monoamino component comprises a mixture of at least two members selected from different groups of general formulae:
• R is a monovalent aliphatic radical containing 12 to 24 carbon atoms
• R is a monovalent aromatic radical
• R is a monovalent aliphatic radical containing 2 to 10 carbon atoms
• R is a divalent aliphatic radical containing 2 to 4 carbon atoms.
• the diamino component comprises a dioxaalkanediamine or a mixture of dioxa-alkanediamines of general formula:
• R and R are divalent aliphatic radicals containing 2 to 4 carbon atoms, and R is a divalent aliphatic radical containing 2 to 10 carbon atoms, and
• the di-isocyanate component comprises an aromatic di-isocyanate or a mixture of aromatic diisocyanates.
• the components are preferably reacted at a temperature of in the range 40 to C.
• reaction mixture is then heated further to a temperature of to 200C, preferably to about C.
• a temperature of to 200C preferably to about C.
• the di-isocyanate component optionally at a temperature which is above its melting point, or dissolved in lubricating oil or in a solvent which is inert under the reaction conditions, is added to the mixture of mono-amino and diamino components and the lubricating oil.
• the di-isocyanate component is thus exposed during the reaction to an excess of amines, as a result of which the degree of branching or cross-linking il'lZCll oin several atpha ac menwamineethens: astnoaw -.rminoi :eornpeaenit; :the compounds .c otresp mane menarmino coanponerat; :the :eornpoands correspondi g Q -:tlre molar ratio of; a1
• the molar ratio of aliphatic mono-amine or mono-amines to aromatic mono-amines or mono-amines to aliphatic monoamino-ether or aliphatic mono-amino-ethers is preferably about l:O.5:O.5.
• the aliphatic mono-amine in the mono-amino component is preferably a straight-chained monoamine with 16 to 24 carbon atoms per molecule, or a mixture of such mono-amines.
• the aromatic mono-amine in the mono-amino component is preferably aniline, toluidine or xylidine or a mixture of these amines. isomeric aromatic monoamines can be used individually or as an isomer mixture.
• the aliphatic mono-amino-ether of the general formula is preferably one in which R is a monovalent aliphatic radical containing 4 to 6 carbon atoms and R is a divalent aliphatic radical containing 2 or 3 carbon atoms. These mono-amino-ethers can be used separately or as mixtures.
• the dioxa-alkanediamine of the general formula is preferably one in which R and R are divalent alialiphatic: monmatnine or; sev r l; an phatie' ntone-amines and :aln aroirniatiic: mono amine: or
• Desmodur T mixture of 65% 2,4-toluylene di-isocyanate and 35% 2,6-toluylene dioisocyanate
• H water
• a further g of the same base oil was added to the feed vessel for the di-isocyanates.
• the reaction mixture was then heated with further stirring to C, and when this temperature was reached the mixture was cooled to 100C.
• a mixture of 10 g of Amine T corrosion inhibitor by Ciba-Geigy).
• Additin 30 oxidation inhibitor by Wegriken Buyer
• 2 g Reomet SBT metal de-activator by Ciba-Geigyi and 168 g base oil were then added and the mixture stirred until cold. When cold the grease was homoge' nised in a colloid mill.
• Corrosion index according to Emcor Test B run (1,500 r.p.m., 130C) passed (DlN 51 802) 0 Oil separation (1P 121/63) 2.1% by wt. Mechanical/Dynamic SKF test (DIN 51 806): A run (2,500 r.p.m. without heating) passed B run (1,500 r.p.m. at 130C) passed EXAMPLE 2 A mixture of 41.5 g.
• reaction mixture was then heated with further stirring to 175C, and after reaching this temperature the mixture was cooled to 100C.
• a mixture of 10 g of Amine T, g of Additin 30, 2 g of Reomet SBT and 168 of base oil was then added, and the mixture stirred until cold. When cold the grease was homogenised in a colloid mill.
• EXAMPLE 4 A mixture of 40.1 gv of 4,9-dioxadodecane-l .12- diamine, 60.3 g of Genamin 20/22 R D, 31.2 g of hexyloxy-propylamine and 1,500 g of a mixed-base solvent raffinate (l4E/50C corresponding to est/50C) was heated to 60C with stirring. The amines formed a clear solution with the mineral oil at this temperature. Maintaining constant intensive stirring, 68.4 g of Desmodur T 65 were added dropwise over 10 minutes. The turbidity which set in immediately increased rapidly and the contents of the reactor thickened.
• a mixed-base solvent raffinate l4E/50C corresponding to est/50C
• the molar ratio of the reaction components was 1 l :1 :2.
• a process for the production of a grease which process comprises reacting a monoamino, a diamino and a di-isocyanate component in a lubricating oil at a temperature in the range 20to C wherein a. the monoamino component comprises a mixture of at least two members selected from different groups of general forumulae:
• the diamino component comprises a dioxaalkanediaminc or a mixture of dioxaalkancdiamincs of general formula:
• R and R are divalent aliphatic radicals containing 2 to 4 carbon atoms, and R is a divialent aliphatic radical containing 2 to 10 carbon atoms, and
• the di-isocyanate component comprises an aromatic di-isocyanate or a mixture of aromatic diisoeyanates wherein the molar ratio between monoamino, diamino and di isocyanate components is in the range of 2:1:2 to 2:2:3.75.
• reaction mixture is subsequently heated to a temperature in the range 150 to 200C.
• a process according to claim l wherein the molar ratio between monoamino, diamino and di-isocyanate components is in the range 2:112 to 211:2.5.
• the monoamino component comprises a monoamine of general formula R -NH in which R is a monovalent aliphatic radical containing 16 to 24 carbon atoms.
• the monoamino component comprises an aromatic monoamine which is aniline, toluidine. xylidine. or a mixture thereof.
• the monoamino component comprises a monoamine of general formula R O-R*NH in which R is a monovalent aliphatic radical containing 4 to 6 carbon atoms and R is a divalent aliphatic radical containing 1 or 3 carbon atoms.
• diamino component comprises a straight chain dioxa-alkane diamine of general formula NH -R"O--R OR- l ll-i in which R and R are divalent aliphatic radicals containing 2 or 3 carbon atoms and R is a divalent aliphatic radical containing 4 to 6 carbon atoms.
• a process according to claim 1 wherein the diisocyanate component comprises phenylene, toluyleneditolylene-, naphthylene. or diphenylmethane diisocyanate, or mixtures thereof.
• the lubrieating oil is a mineral oil, a polyaryl ether. 21 polyalkylene glycol. a polysiloxane or an ester.
• the mineral lubricating oil is a paraffinic or naphthenic lubricating oil fraction or a mixture thereof.
• a grease composition comprising a lubricating oil thickened by 3-30% by weight of a polyurea formed in situ, said composition being formed by a process which comprises reacting a monoamino component and a diamino component with a di-isocyanate component in a lubricating oil at a temperature in the range 20to C wherein a. the monoamino component comprises a mixture ol at least two members selected from the following general formulae:
• R is a monovalent aliphatic radical containing 12 to 24 carbon atoms
• R is a monovalent aromatic radical
• R is a monovalent aliphatic radical containing 2 to 10 carbon atoms
• R" is a divalent aliphatic radical containing 2 to 4 carbon atoms
• the diamino component comprises a dioxa-alkane diamine or a mixture of dioxa-alkanediamines of the general formula: NH R --OR-OR- NH in which R and R are divalent aliphatic radicals containing 2 to 4 carbon atoms and R is a divalent aliphatic radical containing 2 to 10 carbon atoms, and
• the di-isocyanate component comprises an aromatic di-isocyanate or a mixture of aromatic di' isocyanates wherein the molar ratio of the monoamino, diamino and di-isocyanate components is in the range of 2:132 to 21213.75.
• composition of claim 18 wherein the molar ratio between monoamino, diamino and di-isocyanate components is in the range 2:1:2 to 2:l:2.5.
• composition of claim 18 wherein the molar ratio between monoamino, diamino and di-isocyanate components is in the range 2:2:3.75.
• composition of claim 18 wherein the monoamino component comprises a monoamine of the general formula RNH in which R is a monovalent aliphatic radical containing 16 to 24 carbon atoms.
• composition of claim 18 wherein the monoamino component comprises an aromatic monoamine which is aniline. toluidine, xylidine, or a mixture thereof.
• composition of claim 18 wherein the monoamino component comprises a monoamine of the general formula R O-RNH in which R is a monovalent aliphatic radical containing 4 to 6 carbon atoms and R is a divalent aliphatic radical containing 2 or 3 carbon atoms.
• composition of claim 18 wherein the diamino component comprises a straight chain dioxa-alkane diamine of the general formula NH R"O-R- "'O-R NH in which R and R are divalent aliphatic radicals containing 2 or 3 carbon atoms and R is a divalent aliphatic radical containing 4 to 6 carbon atoms.
• composition of claim 18 wherein the reaction is carried out at a temperature in the range 40 to C.
• composition of claim 18 wherein the reaction mixture is subsequently heated to a temperature in the range to 200C.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Lubricants (AREA)
• Polyurethanes Or Polyureas (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=5864057

Family Applications (1)

Country Status (6)

Cited By (8)

Families Citing this family (5)

Citations (3)

• 1972
  • 1972-12-11 DE DE2260496A patent/DE2260496C3/de not_active Expired
• 1973
  • 1973-11-23 GB GB5446073A patent/GB1406553A/en not_active Expired
  • 1973-11-29 US US420004A patent/US3870642A/en not_active Expired - Lifetime
  • 1973-12-08 JP JP48137619A patent/JPS49102708A/ja active Pending
  • 1973-12-10 FR FR7343980A patent/FR2209831B1/fr not_active Expired
  • 1973-12-10 NL NL7316855A patent/NL7316855A/xx not_active Application Discontinuation

Patent Citations (3)

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