EP3615641B1 - Verwendung eines dispersant in einer schmiermittelzusammensetzung - Google Patents
Verwendung eines dispersant in einer schmiermittelzusammensetzung Download PDFInfo
- Publication number
- EP3615641B1 EP3615641B1 EP18724139.3A EP18724139A EP3615641B1 EP 3615641 B1 EP3615641 B1 EP 3615641B1 EP 18724139 A EP18724139 A EP 18724139A EP 3615641 B1 EP3615641 B1 EP 3615641B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nitrogen
- dispersant
- lubricating composition
- acid
- polymers
- 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.)
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- 239000000203 mixture Substances 0.000 title claims description 81
- 239000002270 dispersing agent Substances 0.000 title claims description 40
- 230000001050 lubricating effect Effects 0.000 title claims description 28
- -1 zinc dithiophosphate compound Chemical class 0.000 claims description 35
- 239000004071 soot Substances 0.000 claims description 20
- 229920002367 Polyisobutene Polymers 0.000 claims description 17
- 239000002199 base oil Substances 0.000 claims description 17
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 7
- 229920000098 polyolefin Polymers 0.000 claims description 6
- 239000007795 chemical reaction product Substances 0.000 claims description 5
- 229960002317 succinimide Drugs 0.000 claims description 4
- 238000007127 saponification reaction Methods 0.000 claims description 3
- 239000004480 active ingredient Substances 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 description 58
- 239000010687 lubricating oil Substances 0.000 description 31
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 description 25
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- 229930195733 hydrocarbon Natural products 0.000 description 18
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- 239000000376 reactant Substances 0.000 description 18
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- 125000000217 alkyl group Chemical group 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 13
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 12
- 239000004215 Carbon black (E152) Substances 0.000 description 10
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- 239000005977 Ethylene Substances 0.000 description 10
- 239000000314 lubricant Substances 0.000 description 10
- 239000004711 α-olefin Substances 0.000 description 10
- 150000008064 anhydrides Chemical class 0.000 description 9
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- 239000003921 oil Substances 0.000 description 9
- 239000003963 antioxidant agent Substances 0.000 description 8
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- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 8
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- 239000007866 anti-wear additive Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000009472 formulation Methods 0.000 description 6
- 125000001183 hydrocarbyl group Chemical group 0.000 description 6
- 230000000269 nucleophilic effect Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- SXYOAESUCSYJNZ-UHFFFAOYSA-L zinc;bis(6-methylheptoxy)-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].CC(C)CCCCCOP([S-])(=S)OCCCCCC(C)C.CC(C)CCCCCOP([S-])(=S)OCCCCCC(C)C SXYOAESUCSYJNZ-UHFFFAOYSA-L 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 5
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- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 5
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- 229910015900 BF3 Inorganic materials 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- 150000001408 amides Chemical class 0.000 description 4
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- 239000002530 phenolic antioxidant Substances 0.000 description 4
- 229920005652 polyisobutylene succinic anhydride Polymers 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- PDEDQSAFHNADLV-UHFFFAOYSA-M potassium;disodium;dinitrate;nitrite Chemical compound [Na+].[Na+].[K+].[O-]N=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PDEDQSAFHNADLV-UHFFFAOYSA-M 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical class C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 3
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical class ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical class C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 3
- KEQFTVQCIQJIQW-UHFFFAOYSA-N N-Phenyl-2-naphthylamine Chemical class C=1C=C2C=CC=CC2=CC=1NC1=CC=CC=C1 KEQFTVQCIQJIQW-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000010538 cationic polymerization reaction Methods 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000007859 condensation product Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 229920001519 homopolymer Polymers 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 3
- 229960001860 salicylate Drugs 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 229940014800 succinic anhydride Drugs 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 description 2
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 2
- ICKWICRCANNIBI-UHFFFAOYSA-N 2,4-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=C(O)C(C(C)(C)C)=C1 ICKWICRCANNIBI-UHFFFAOYSA-N 0.000 description 2
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical class COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Chemical class OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- IKEHOXWJQXIQAG-UHFFFAOYSA-N 2-tert-butyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C(C)(C)C)=C1 IKEHOXWJQXIQAG-UHFFFAOYSA-N 0.000 description 2
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- 229920002873 Polyethylenimine Polymers 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- CGRTZESQZZGAAU-UHFFFAOYSA-N [2-[3-[1-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]-2-methylpropan-2-yl]-2,4,8,10-tetraoxaspiro[5.5]undecan-9-yl]-2-methylpropyl] 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCC(C)(C)C2OCC3(CO2)COC(OC3)C(C)(C)COC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 CGRTZESQZZGAAU-UHFFFAOYSA-N 0.000 description 2
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- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/52—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of 30 or more atoms
- C10M133/56—Amides; Imides
-
- 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
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
-
- 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
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/12—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic compound containing atoms of elements not provided for in groups C10M141/02 - C10M141/10
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/003—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/17—Fisher Tropsch reaction products
- C10M2205/173—Fisher Tropsch reaction products used as base material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/28—Amides; Imides
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
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- 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
- C10N2030/04—Detergent property or dispersant property
- C10N2030/041—Soot induced viscosity control
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- 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
- C10N2040/25—Internal-combustion engines
Definitions
- the present invention is defined in and by the appended claims and relates to a lubricating oil composition which is suitable for lubricating internal combustion engines and which has reduced wear properties.
- Optimising lubricants through the use of high performance basestocks and novel additives represents a flexible solution to a growing challenge.
- Anti-wear additives are important to mitigate issues arising from the desire to have low viscosity formulations in order to reduce fuel consumption and various such additives are already known in the art.
- a common anti-wear additive which is well known for use in lubricating compositions is a zinc dithiophosphate, such as, for example, zinc dialkyl-, diaryl- or alkylaryl-dithiophosphates.
- Zinc dithiophosphate may be conveniently represented by general formula II: wherein R 2 to R 5 may be the same or different and are each a primary alkyl group containing from 1 to 20 carbon atoms preferably from 3 to 12 carbon atoms, a secondary alkyl group containing from 3 to 20 carbon atoms, preferably from 3 to 12 carbon atoms, an aryl group or an aryl group substituted with an alkyl group, said alkyl substituent containing from 1 to 20 carbon atoms preferably 3 to 18 carbon atoms.
- Examples of suitable zinc dithiophosphates which are commercially available include those available ex. Lubrizol Corporation under the trade designations “Lz 1097” and “Lz 1395", those available ex. Chevron Oronite under the trade designations “OLOA 267” and “OLOA 269R”, and that available ex. Afton Chemical under the trade designation "HITEC 7197"; C9417, zinc dithiophosphates such as that available from Infineum under the tradename Infineum C9417, those available from Lubrizol Corporation under the trade designations "Lz 677A”, “Lz 1095” and “Lz 1371", that available ex. Chevron Oronite under the trade designation "OLOA 262" and that available ex.
- the present invention provides the use of a nitrogen-containing ashless dispersant in a lubricating composition for the purpose of reducing wear in the presence of zinc dithiophosphate compounds and soot wherein the nitrogen-containing ashless dispersant has a functionality (F) of from 1.5 to 1.9.
- soot means a deep black powdery or flaky substance consisting largely of amorphous carbon.
- Gas-phase soot contains polycyclic aromatic hydrocarbons (PAH). Soot is produced by the incomplete burning of organic matter, such as hydrocarbon based fuels. It consists of agglomerated nanoparticles with diameters between 6 and 30 nm. The soot particles can be mixed with metal oxides and with minerals and can be coated with sulfuric acid. In the context of an internal combustion engine, soot can travel from the combustion chamber into the lubricant and can accumulate in the lubricant.
- PAH polycyclic aromatic hydrocarbons
- the amount of soot in the lubricating composition containing the zinc dithiophosphate compound is typically at a level of from 0.1 wt% to 10 wt%. In one embodiment, the level of soot is from 2 to 7 wt%, by weight of the lubricating composition. In another embodiment, the level of soot is from 3.5 to 7 wt%, by weight of the lubricating composition. In another embodiment, the level of soot is from 5 to 6 wt%, by weight of the lubricating composition.
- the nitrogen-containing ashless dispersant is present in the lubricating composition herein at a level so as to provide a level of nitrogen from 0.05 wt% to 0.1 wt%, by weight of the lubricating composition.
- the nitrogen-containing ashless dispersant is used herein to reduce the wear exhibited by a lubricating composition in the presence of zinc dithiophosphate compounds and soot.
- reducing wear means reducing the level of wear to a level below that exhibited by a lubricating composition which contains zinc dithiophosphate and soot but which does not contain the nitrogen-containing ashless dispersant described herein.
- the nitrogen-containing ashless dispersant is used to reduce the wear by at least 5%, more preferably by at least 10%, even more preferably by at least 50%, and especially by at least 80%, even more especially by at least 90%, compared with that of an analogous lubricating composition which contains zinc dithiophosphate and soot but which does not contain the nitrogen-containing ashless dispersant described herein.
- Suitable dispersants for use herein comprise an oil soluble polymeric long chain backbone having functional groups capable of associating with particles to be dispersed.
- such dispersants have amine, amine-alcohol or amide polar moieties attached to the polymer backbone, often via a bridging group.
- the dispersant may be, for example, selected from oil soluble salts, esters, amino-esters, amides, imides and oxazolines of long chain hydrocarbon-substituted mono- and polycarboxylic acids or anhydrides thereof; thiocarboxylate derivatives of long chain hydrocarbons; long chain aliphatic hydrocarbons having polyamine moieties attached directly thereto; and Mannich condensation products formed by condensing a long chain substituted phenol with formaldehyde and polyalkylene polyamine.
- each mono- or dicarboxylic acid-producing moiety will react with a nucleophilic group (amine or amide) and the number of functional groups in the polyalkenyl-substituted carboxylic acylating agent will determine the number of nucleophilic groups in the finished dispersant.
- the polyalkenyl moiety of the dispersant used in the present invention has a number average molecular weight of from about 700 to about 3000, preferably between 950 and 3000, such as between 950 and 2800, more preferably from about 950 to 2500, and most preferably from about 950 to about 2400.
- the molecular weight of a dispersant is generally expressed in terms of the molecular weight of the polyalkenyl moiety as the precise molecular weight range of the dispersant depends on numerous parameters including the type of polymer used to derive the dispersant, the number of functional groups, and the type of nucleophilic group employed.
- the polyalkenyl moiety from which the high molecular weight dispersants are derived preferably have a narrow molecular weight distribution (MWD), also referred to as polydispersity, as determined by the ratio of weight average molecular weight (M w ) to number average molecular weight (M n ).
- MWD molecular weight distribution
- polymers from which the dispersants used in the present invention are derived have a M w /M n of from about 1.5 to about 2.0, preferably from about 1.5 to about 1.9, most preferably from about 1.6 to about 1.8.
- Suitable hydrocarbons or polymers employed in the formation of the dispersants used in the present invention include homopolymers, interpolymers or lower molecular weight hydrocarbons.
- such polymers comprise interpolymers of ethylene and at least one alpha-olefin of the above formula, wherein R 1 is alkyl of from 1 to 18 carbon atoms, and more preferably is alkyl of from 1 to 8 carbon atoms, and more preferably still of from 1 to 2 carbon atoms.
- useful alpha-olefin monomers and comonomers include, for example, propylene, butene-1, hexene-1, octene-1, 4-methylpentene-1, decene-1, dodecene-1, tridecene-1, tetradecene-1, pentadecene-1, hexadecene-1, heptadecene-1, octadecene-1, nonadecene-1, and mixtures thereof (e.g., mixtures of propylene and butene-1, and the like).
- Exemplary of such polymers are propylene homopolymers, butene-1 homopolymers, ethylene-propylene copolymers, ethylene-butene-1 copolymers, propylene-butene copolymers and the like, wherein the polymer contains at least some terminal and/or internal unsaturation.
- Preferred polymers are unsaturated copolymers of ethylene and propylene and ethylene and butene-1.
- the interpolymers used herein may contain a minor amount, e.g. 0.5 to 5 mole % of a C 4 to C 13 nonconjugated diolefin comonomer.
- the polymers used in the present invention comprise only alpha-olefin homopolymers, interpolymers of alpha-olefin comonomers and interpolymers of ethylene and alpha-olefin comonomers.
- the molar ethylene content of the polymers employed in this invention is preferably in the range of 0 to 80 %, and more preferably 0 to 60 %.
- the ethylene content of such copolymers is most preferably between 15 and 50 %, although higher or lower ethylene contents may be present.
- These polymers may be prepared by polymerizing alpha-olefin monomer, or mixtures of alpha-olefin monomers, or mixtures comprising ethylene and at least one C 3 to C 28 alpha-olefin monomer, in the presence of a catalyst system comprising at least one metallocene (e.g., a cyclopentadienyl-transition metal compound) and an alumoxane compound.
- a catalyst system comprising at least one metallocene (e.g., a cyclopentadienyl-transition metal compound) and an alumoxane compound.
- the percentage of polymer chains exhibiting terminal ethenylidene unsaturation may be determined by FTIR spectroscopic analysis, titration, or C 13 NMR.
- the chain length of the R 1 alkyl group will vary depending on the comonomer(s) selected for use in the polymerization.
- These terminally unsaturated interpolymers may be prepared by known metallocene chemistry and may also be prepared as described in U.S. Patent Nos. 5,498,809 ; 5,663,130 ; 5,705,577 ; 5,814,715 ; 6,022,929 and 6,030,930 .
- polymers prepared by cationic polymerization of isobutene, styrene, and the like are polymers prepared by cationic polymerization of isobutene, styrene, and the like.
- Common polymers from this class include polyisobutenes obtained by polymerization of a C 4 refinery stream having a butene content of about 35 to about 75 mass %, and an isobutene content of about 30 to about 60 mass %, in the presence of a Lewis acid catalyst, such as aluminum trichloride or boron trifluoride.
- a preferred source of monomer for making poly-n-butenes is petroleum feedstreams such as Raffinate II. These feedstocks are disclosed in the art such as in U.S. Patent No. 4,952,739 .
- Polyisobutylene is a most preferred backbone herein because it is readily available by cationic polymerization from butene streams (e.g., using AlCl 3 or BF 3 catalysts) . Such polyisobutylenes generally contain residual unsaturation in amounts of about one ethylenic double bond per polymer chain, positioned along the chain.
- a preferred embodiment utilizes polyisobutylene prepared from a pure isobutylene stream or a Raffinate I stream to prepare reactive isobutylene polymers with terminal vinylidene olefins.
- these polymers referred to as highly reactive polyisobutylene (HR-PIB)
- HR-PIB highly reactive polyisobutylene
- these polymers have a terminal vinylidene content of at least 65%, e.g., 70%, more preferably at least 80%, most preferably, at least 85%.
- the preparation of such polymers is described, for example, in U.S. Patent No. 4,152,499 .
- HR-PIB is known and HR-PIB is commercially available under the tradenames Glissopal TM (from BASF) and Ultravis TM (from BP-Amoco).
- Polyisobutylene polymers that may be employed are generally based on a hydrocarbon chain of from about 700 to 3000. Methods for making polyisobutylene are known. Polyisobutylene can be functionalized by halogenation (e.g. chlorination), the thermal "ene” reaction, or by free radical grafting using a catalyst (e.g. peroxide), is described below.
- halogenation e.g. chlorination
- the thermal "ene” reaction e.g. peroxide
- a catalyst e.g. peroxide
- the hydrocarbon or polymer backbone can be functionalized, e.g., with carboxylic acid producing moieties (preferably acid or anhydride moieties) selectively at sites of carbon-to-carbon unsaturation on the polymer or hydrocarbon chains, or randomly along chains using any of the three processes mentioned above or combinations thereof, in any sequence.
- carboxylic acid producing moieties preferably acid or anhydride moieties
- the polymer or hydrocarbon may be functionalized, for example, with carboxylic acid producing moieties (preferably acid or anhydride) by reacting the polymer or hydrocarbon under conditions that result in the addition of functional moieties or agents, i.e., acid, anhydride, ester moieties, etc., onto the polymer or hydrocarbon chains primarily at sites of carbon-to-carbon unsaturation (also referred to as ethylenic or olefinic unsaturation) using the halogen assisted functionalization (e.g. chlorination) process or the thermal "ene" reaction.
- carboxylic acid producing moieties preferably acid or anhydride
- Selective functionalization can be accomplished by halogenating, e.g., chlorinating or brominating the unsaturated ⁇ -olefin polymer to about 1 to 8 mass %, preferably 3 to 7 mass % chlorine, or bromine, based on the weight of polymer or hydrocarbon, by passing the chlorine or bromine through the polymer at a temperature of 60 to 250°C, preferably 110 to 160°C, e.g., 120 to 140°C, for about 0.5 to 10, preferably 1 to 7 hours.
- halogenating e.g., chlorinating or brominating the unsaturated ⁇ -olefin polymer to about 1 to 8 mass %, preferably 3 to 7 mass % chlorine, or bromine, based on the weight of polymer or hydrocarbon
- the halogenated polymer or hydrocarbon (hereinafter backbone) is then reacted with sufficient monounsaturated reactant capable of adding the required number of functional moieties to the backbone, e.g., monounsaturated carboxylic reactant, at 100 to 250°C, usually about 180°C to 235°C, for about 0.5 to 10, e.g., 3 to 8 hours, such that the product obtained will contain the desired number of moles of the monounsaturated carboxylic reactant per mole of the halogenated backbones.
- the backbone and the monounsaturated carboxylic reactant are mixed and heated while adding chlorine to the hot material.
- chlorination normally helps increase the reactivity of starting olefin polymers with monounsaturated functionalizing reactant, it is not necessary with some of the polymers or hydrocarbons contemplated for use in the present invention, particularly those preferred polymers or hydrocarbons which possess a high terminal bond content and reactivity.
- the backbone and the monounsaturated functionality reactant e.g., carboxylic reactant, are contacted at elevated temperature to cause an initial thermal "ene" reaction to take place. Ene reactions are known.
- the hydrocarbon or polymer backbone can be functionalized by random attachment of functional moieties along the polymer chains by a variety of methods.
- the polymer in solution or in solid form, may be grafted with the monounsaturated carboxylic reactant, as described above, in the presence of a free-radical initiator.
- the grafting takes place at an elevated temperature in the range of about 100 to 260°C, preferably 120 to 240°C.
- free-radical initiated grafting would be accomplished in a mineral lubricating oil solution containing, e.g., 1 to 50 mass %, preferably 5 to 30 mass % polymer based on the initial total oil solution.
- the free-radical initiators that may be used are peroxides, hydroperoxides, and azo compounds, preferably those that have a boiling point greater than about 100°C and decompose thermally within the grafting temperature range to provide free-radicals.
- Representative of these free-radical initiators are azobutyronitrile, 2,5-dimethylhex-3-ene-2, 5-bis-tertiary-butyl peroxide and dicumene peroxide.
- the initiator when used, typically is used in an amount of between 0.005% and 1% by weight based on the weight of the reaction mixture solution.
- the aforesaid monounsaturated carboxylic reactant material and free-radical initiator are used in a weight ratio range of from about 1.0:1 to 30:1, preferably 3:1 to 6:1.
- the grafting is preferably carried out in an inert atmosphere, such as under nitrogen blanketing.
- the resulting grafted polymer is characterized by having carboxylic acid (or ester or anhydride) moieties randomly attached along the polymer chains: it being understood, of course, that some of the polymer chains remain ungrafted.
- the free radical grafting described above can be used for the other polymers and hydrocarbons used in the present invention.
- Mixtures of monounsaturated carboxylic materials (i) - (iv) also may be used.
- the monounsaturation of the monounsaturated carboxylic reactant becomes saturated.
- maleic anhydride becomes backbone-substituted succinic anhydride
- acrylic acid becomes backbone-substituted propionic acid.
- Such monounsaturated carboxylic reactants are fumaric acid, itaconic acid, maleic acid, maleic anhydride, chloromaleic acid, chloromaleic anhydride, acrylic acid, methacrylic acid, crotonic acid, cinnamic acid, and lower alkyl (e.g., C 1 to C 4 alkyl) acid esters of the foregoing, e.g., methyl maleate, ethyl fumarate, and methyl fumarate.
- lower alkyl e.g., C 1 to C 4 alkyl
- the monounsaturated carboxylic reactant typically will be used in an amount ranging from about equimolar amount to about 100 mass % excess, preferably 5 to 50 mass % excess, based on the moles of polymer or hydrocarbon. Unreacted excess monounsaturated carboxylic reactant can be removed from the final dispersant product by, for example, stripping, usually under vacuum, if required.
- the functionalized oil-soluble polymeric hydrocarbon backbone is then derivatized with a nitrogen-containing nucleophilic reactant, such as an amine, amino-alcohol, amide, or mixture thereof, to form a corresponding derivative.
- a nitrogen-containing nucleophilic reactant such as an amine, amino-alcohol, amide, or mixture thereof.
- Amine compounds are preferred.
- Useful amine compounds for derivatizing functionalized polymers comprise at least one amine and can comprise one or more additional amine or other reactive or polar groups. These amines may be hydrocarbyl amines or may be predominantly hydrocarbyl amines in which the hydrocarbyl group includes other groups, e.g., hydroxy groups, alkoxy groups, amide groups, nitriles, imidazoline groups, and the like.
- Particularly useful amine compounds include mono- and polyamines, e.g., polyalkene and polyoxyalkylene polyamines of about 2 to 60, such as 2 to 40 (e.g., 3 to 20) total carbon atoms having about 1 to 12, such as 3 to 12, preferably 3 to 9, most preferably form about 6 to about 7 nitrogen atoms per molecule.
- Mixtures of amine compounds may advantageously be used, such as those prepared by reaction of alkylene dihalide with ammonia.
- Preferred amines are aliphatic saturated amines, including, for example, 1,2-diaminoethane; 1,3-diaminopropane; 1,4-diaminobutane; 1,6-diaminohexane; polyethylene amines such as diethylene triamine; triethylene tetramine; tetraethylene pentamine; and polypropyleneamines such as 1,2-propylene diamine; and di-(1,2-propylene)triamine.
- Such polyamine mixtures known as PAM
- Particularly preferred polyamine mixtures are mixtures derived by distilling the light ends from PAM products. The resulting mixtures, known as "heavy" PAM, or HPAM, are also commercially available.
- amine compounds include: alicyclic diamines such as 1,4-di(aminomethyl) cyclohexane and heterocyclic nitrogen compounds such as imidazolines.
- Another useful class of amines is the polyamido and related amido-amines as disclosed in U.S. Patent Nos. 4,857,217 ; 4,956,107 ; 4,963,275 ; and 5,229,022 .
- TAM tris(hydroxymethyl)amino methane
- Dendrimers, star-like amines, and comb-structured amines may also be used.
- condensed amines as described in U.S. Patent No. 5,053,152 .
- the functionalized polymer is reacted with the amine compound using conventional techniques as described, for example, in U.S. Patent Nos. 4,234,435 and 5,229,022 , as well as in EP-A-208,560 .
- a preferred dispersant for use according to the invention is one comprising at least one polyalkenyl succinimide, which is the reaction product of a polyalkenyl substituted succinic anhydride (e.g., PIBSA) and a polyamine (PAM) that has a coupling ratio of from about 0.65 to about 1.25, preferably from about 0.8 to about 1.1, most preferably from about 0.9 to about 1.
- PIBSA polyalkenyl substituted succinic anhydride
- PAM polyamine
- “coupling ratio” may be defined as a ratio of the number of succinyl groups in the PIBSA to the number of primary amine groups in the polyamine reactant.
- Another class of high molecular weight ashless dispersants comprises Mannich base condensation products.
- these products are prepared by condensing about one mole of a long chain alkyl-substituted mono- or polyhydroxy benzene with about 1 to 2.5 moles of carbonyl compound(s) (e.g., formaldehyde and paraformaldehyde) and about 0.5 to 2 moles of polyalkylene polyamine, as disclosed, for example, in U.S. Patent No. 3,442,808 .
- carbonyl compound(s) e.g., formaldehyde and paraformaldehyde
- polyalkylene polyamine as disclosed, for example, in U.S. Patent No. 3,442,808 .
- Such Mannich base condensation products may include a polymer product of a metallocene catalyzed polymerization as a substituent on the benzene group, or may be reacted with a compound containing such a polymer substituted on a succinic anhydride in a manner similar to that described in U.S. Patent No. 3,442,808 .
- Examples of functionalized and/or derivatized olefin polymers synthesized using metallocene catalyst systems are described in the publications identified supra.
- the dispersants for use according to the invention have a Functionality (F) of from 1.5 to about 1.9.
- each dicarboxylic acid-producing moiety (succinic group) will react with a nucleophilic group (polyamine moiety) and the number of succinic groups in the PIBSA will determine the number of nucleophilic groups in the finished dispersant.
- Polymer molecular weight can be determined by various known techniques.
- One convenient method is gel permeation chromatography (GPC), which additionally provides molecular weight distribution information (see W. W. Yau, J. J. Kirkland and D. D. Bly, "Modern Size Exclusion Liquid Chromatography", John Wiley and Sons, New York, 1979 ).
- GPC gel permeation chromatography
- Another useful method for determining molecular weight, particularly for lower molecular weight polymers is vapor pressure osmometry (see, e.g., ASTM D3592).
- Suitable hydrocarbons or polymers employed in the formation of the dispersants include polymers prepared by cationic polymerization of isobutene.
- Common polymers from this class include polyisobutenes obtained by polymerization of a C 4 refinery stream having a butene content of about 35 to about 75% by wt., and an isobutene content of about 30 to about 60% by wt., in the presence of a Lewis acid catalyst, such boron trifluoride (BF 3 ).
- a Lewis acid catalyst such boron trifluoride (BF 3 ).
- the polyisobutylene is prepared from a pure isobutylene stream or a Raffinate I stream to prepare reactive isobutylene polymers with terminal vinylidene olefins.
- these polymers referred to as highly reactive polyisobutylene (HR-PIB)
- HR-PIB highly reactive polyisobutylene
- these polymers have a terminal vinylidene content of at least 60%, e.g., 70%, more preferably at least 80%, most preferably, at least 85%.
- the preparation of such polymers is described, for example, in U.S. Patent No. 4,152,499 .
- Such polymers are conventionally referred to as HR-PIB and HR-PIB is commercially available from Texas Petrochemical Corporation (TPC), or from BASF (under the trade names Glissopal TM ).
- the monounsaturated carboxylic reactant typically will be used in an amount ranging from about 5 to about 300 % excess, preferably from about 10 to 200 %, such as 20 to 100 % excess, based on the moles of polymer. Unreacted excess monounsaturated carboxylic reactant can be removed from the final dispersant product by, for example, stripping, under vacuum, if required.
- Polyamines useful in the formation of the dispersants include polyamines having, or having on average, 3 to 8 nitrogen atoms per molecule, preferably from about 5 to about 8 nitrogen atoms per molecule. These amines may be hydrocarbyl amines or may be predominantly hydrocarbyl amines in which the hydrocarbyl group includes other groups, e.g., hydroxy groups, alkoxy groups, amide groups, nitriles, imidazoline groups, and the like. Mixtures of amine compounds may advantageously be used, such as those prepared by reaction of alkylene dihalide with ammonia.
- Preferred amines are aliphatic saturated amines, including, for example, polyethylene amines such as diethylene triamine; triethylene tetramine; tetraethylene pentamine; and polypropyleneamines such as di-(1,2-propylene)triamine.
- polyethylene amines such as diethylene triamine; triethylene tetramine; tetraethylene pentamine; and polypropyleneamines such as di-(1,2-propylene)triamine.
- PAM polyethylene amines
- Useful polyamine mixtures also include mixtures derived by distilling the light ends from PAM products. The resulting mixtures, known as "heavy" PAM, or HPAM, are also commercially available.
- the properties and attributes of both PAM and/or HPAM are described, for example, in U.S. Patent Nos. 4,938,881 ; 4,927,551 ; 5,230,714 ; 5,241,003 ; 5,565,128 ; 5,756,431 ;
- the total amount of base oil incorporated in the lubricating oil composition preferably present in an amount in the range of from 60 to 92 wt. %, more preferably in an amount in the range of from 75 to 90 wt. % and most preferably in an amount in the range of from 75 to 88 wt. %, with respect to the total weight of the lubricating oil composition.
- base oil used in the present invention there are no particular limitations regarding the base oil used in the present invention, and various conventional known mineral oils and synthetic oils may be conveniently used.
- the base oil used in the present invention may conveniently comprise mixtures of one or more mineral oils and/or one or more synthetic oils.
- Mineral oils include liquid petroleum oils and solvent-treated or acid-treated mineral lubricating oils of the paraffinic, naphthenic, or mixed paraffinic/naphthenic type which may be further refined by hydrofinishing processes and/or dewaxing.
- Naphthenic base oils have low viscosity index (VI) (generally 40-80) and a low pour point.
- Such base oils are produced from feedstocks rich in naphthenes and low in wax content and are used mainly for lubricants in which colour and colour stability are important, and VI and oxidation stability are of secondary importance.
- Paraffinic base oils have higher VI (generally >95) and a high pour point. Said base oils are produced from feedstocks rich in paraffins, and are used for lubricants in which VI and oxidation stability are important.
- Fischer-Tropsch derived base oils may be conveniently used as the base oil in the lubricating oil composition for example, the Fischer-Tropsch derived base oils disclosed in EP-A-776959 , EP-A-668342 , WO-A-97/21788 , WO-00/15736 , WO-00/14188 , WO-00/14187 , WO-00/14183 , WO-00/14179 , WO-00/08115 , WO-99/41332 , EP-1029029 , WO-01/18156 and WO-01/57166 .
- Synthetic processes enable molecules to be built from simpler substances or to have their structures modified to give the precise properties required.
- Synthetic oils include hydrocarbon oils such as olefin oligomers (PAOs), dibasic acids esters, polyol esters, and dewaxed waxy raffinate. Synthetic hydrocarbon base oils sold by the Royal Dutch/Shell Group of Companies under the designation "XHVI” (trade mark) may be conveniently used.
- PAOs olefin oligomers
- XHVI XHVI
- the base oil comprises mineral oils and/or synthetic oils which contain more than 80% wt of saturates, preferably more than 90 % wt., as measured according to ASTM D2007.
- the base oil contains less than 1.0 wt. %, preferably less than 0.1 wt. % of sulphur, calculated as elemental sulphur and measured according to ASTM D2622, ASTM D4294, ASTM D4927 or ASTM D3120.
- the viscosity index of the base fluid is more than 80, more preferably more than 120, as measured according to ASTM D2270.
- the lubricating oil composition has a kinematic viscosity in the range of from 2 to 80 mm 2 /s at 100 °C, more preferably of from 3 to 70 mm 2 /s, most preferably of from 4 to 50 mm 2 /s.
- the total amount of phosphorus in the lubricating oil composition of the present invention is preferably in the range of from 0.04 to 0.12 wt. %, more preferably in the range of from 0.04 to 0.09 wt. % and most preferably in the range of from 0.045 to 0.08 wt. %, based on total weight of the lubricating oil composition.
- the lubricating oil composition preferably has a sulphated ash content of not greater than 2.0 wt. %, more preferably not greater than 1.0 wt. % and most preferably not greater than 0.8 wt. %, based on the total weight of the lubricating oil composition.
- the lubricating oil composition preferably has a sulphur content of not greater than 1.2 wt. %, more preferably not greater than 0.8 wt. % and most preferably not greater than 0.2 wt. %, based on the total weight of the lubricating oil composition.
- the lubricating oil composition may further comprise additional additives such as anti-oxidants, anti-wear additives, detergents, dispersants, friction modifiers, viscosity index improvers, pour point depressants, corrosion inhibitors, defoaming agents and seal fix or seal compatibility agents.
- additional additives such as anti-oxidants, anti-wear additives, detergents, dispersants, friction modifiers, viscosity index improvers, pour point depressants, corrosion inhibitors, defoaming agents and seal fix or seal compatibility agents.
- Antioxidants that may be conveniently used include those selected from the group of aminic antioxidants and/or phenolic antioxidants.
- said antioxidants are present in an amount in the range of from 0.1 to 5.0 wt. %, more preferably in an amount in the range of from 0.3 to 3.0 wt. %, and most preferably in an amount in the range of from 0.5 to 1.5 wt. %, based on the total weight of the lubricating oil composition.
- aminic antioxidants which may be conveniently used include alkylated diphenylamines, phenyl- ⁇ -naphthylamines, phenyl- ⁇ -naphthylamines and alkylated ⁇ -naphthylamines.
- Preferred aminic antioxidants include dialkyldiphenylamines such as p,p'-dioctyl-diphenylamine, p,p'-di- ⁇ -methylbenzyl-diphenylamine and N-p-butylphenyl-N-p'-octylphenylamine, monoalkyldiphenylamines such as mono-t-butyldiphenylamine and mono-octyldiphenylamine, bis(dialkylphenyl)amines such as di-(2,4-diethylphenyl)amine and di(2-ethyl-4-nonylphenyl)amine, alkylphenyl-1-naphthylamines such as octylphenyl-1-naphthylamine and n-t-dodecylphenyl-1-naphthylamine, 1-naphthylamine, arylnaph
- Preferred aminic antioxidants include those available under the following trade designations: "Sonoflex OD-3" (ex. Seiko Kagaku Co.), “Irganox L-57” (ex. Ciba Specialty Chemicals Co.) and phenothiazine (ex. Hodogaya Kagaku Co.).
- phenolic antioxidants which may be conveniently used include C7-C9 branched alkyl esters of 3,5-bis(1,1-dimethyl-ethyl)-4-hydroxy-benzenepropanoic acid, 2-t-butylphenol, 2-t-butyl-4-methylphenol, 2-t-butyl-5-methylphenol, 2,4-di-t-butylphenol, 2,4-dimethyl-6-t-butylphenol, 2-t-butyl-4-methoxyphenol, 3-t-butyl-4-methoxyphenol, 2,5-di-t-butylhydroquinone, 2,6-di-t-butyl-4-alkylphenols such as 2,6-di-t-butylphenol, 2,6-di-t-butyl-4-methylphenol and 2,6-di-t-butyl-4-ethylphenol, 2,6-di-t-butyl-4-alkoxyphenols such as 2,6-di-t-butyl
- Preferred phenolic antioxidants include those available under the following trade designations: "Irganox L-135" (ex. Ciba Specialty Chemicals Co.), “Yoshinox SS” (ex. Yoshitomi Seiyaku Co.), “Antage W-400” (ex. Kawaguchi Kagaku Co.), “Antage W-500” (ex. Kawaguchi Kagaku Co.), “Antage W-300” (ex. Kawaguchi Kagaku Co.), “Irganox L109” (ex. Ciba Speciality Chemicals Co.), “Tominox 917” (ex. Yoshitomi Seiyaku Co.), “Irganox L115" (ex.
- Ciba Speciality Chemicals Co. Ciba Speciality Chemicals Co.
- Sudilizer GA80 Ex. Sumitomo Kagaku
- Antage RC ex. Kawaguchi Kagaku Co.
- Irganox L101 ex. Ciba Speciality Chemicals Co.
- Yoshinox 930 ex. Yoshitomi Seiyaku Co.
- the lubricating oil composition may comprise mixtures of one or more phenolic antioxidants with one or more aminic antioxidants.
- the lubricating oil composition may comprise a single zinc dithiophosphate or a combination of two or more zinc dithiophosphates as anti-wear additives, the or each zinc dithiophosphate being selected from zinc dialkyl-, diaryl- or alkylaryl-dithiophosphates.
- the zinc dithiophosphate compounds are present in the lubricating composition in an amount so as to provide preferably from 0.01 wt% to 0.16 wt%, more preferably from 0.06% to 0.12%, by weight of the lubricating composition, of phosphorus.
- Zinc dithiophosphate is a well known additive in the art and may be conveniently represented by general formula II; wherein R 2 to R 5 may be the same or different and are each a primary alkyl group containing from 1 to 20 carbon atoms preferably from 3 to 12 carbon atoms, a secondary alkyl group containing from 3 to 20 carbon atoms, preferably from 3 to 12 carbon atoms, an aryl group or an aryl group substituted with an alkyl group, said alkyl substituent containing from 1 to 20 carbon atoms preferably 3 to 18 carbon atoms.
- Zinc dithiophosphate compounds in which R 2 to R 5 are all different from each other can be used alone or in admixture with zinc dithiophosphate compounds in which R 2 to R 5 are all the same.
- the or each zinc dithiophosphate used in the present invention is a zinc dialkyl dithiophosphate.
- Examples of suitable zinc dithiophosphates which are commercially available include those available ex. Lubrizol Corporation under the trade designations “Lz 1097” and “Lz 1395", those available ex. Chevron Oronite under the trade designations “OLOA 267” and “OLOA 269R”, and that available ex. Afton Chemical under the trade designation "HITEC 7197"; zinc dithiophosphates such as that available from Infineum under the trade name Infineum C9417, those available ex. Lubrizol Corporation under the trade designations "Lz 677A”, “Lz 1095” and “Lz 1371", that available ex. Chevron Oronite under the trade designation "OLOA 262" and that available ex.
- the lubricating oil composition may generally comprise in the range of from 0.4 to 1.2 wt. % of zinc dithiophosphate, based on total weight of the lubricating oil composition.
- anti-wear additives may be conveniently used in the composition
- Typical detergents that may be used in the lubricating oil include one or more salicylate and/or phenate and/or sulphonate detergents.
- metal organic and inorganic base salts which are used as detergents can contribute to the sulphated ash content of a lubricating oil composition, in a preferred embodiment the amounts of such additives are minimised.
- salicylate detergents are preferred.
- the lubricating oil composition may comprise one or more salicylate detergents.
- said detergents are preferably used in amounts in the range of 0.05 to 20.0 wt. %, more preferably from 1.0 to 10.0 wt. % and most preferably in the range of from 2.0 to 5.0 wt. %, based on the total weight of the lubricating oil composition.
- said detergents independently, have a TBN (total base number) value in the range of from 10 to 500 mg.KOH/g, more preferably in the range of from 30 to 350 mg.KOH/g and most preferably in the range of from 50 to 300 mg.KOH/g, as measured by ISO 3771.
- TBN total base number
- viscosity index improvers which may be conveniently used in the lubricating oil composition include the styrene-butadiene copolymers, styrene-isoprene stellate copolymers and the polymethacrylate copolymer and ethylene-propylene copolymers. Such viscosity index improvers may be conveniently employed in an amount in the range of from 1 to 20 wt. %, based on the total weight of the lubricating oil composition.
- Polymethacrylates may be conveniently employed in the lubricating oil compositions as effective pour point depressants.
- compounds such as alkenyl succinic acid or ester moieties thereof, benzotriazole-based compounds and thiodiazole-based compounds may be conveniently used in the lubricating oil composition as corrosion inhibitors.
- Compounds such as polysiloxanes, dimethyl polycyclohexane and polyacrylates may be conveniently used in the lubricating oil composition as defoaming agents.
- seal fix or seal compatibility agents include, for example, commercially available aromatic esters.
- the lubricating compositions herein may be conveniently prepared using conventional formulation techniques by admixing base oil with the liquid crystal compound and one or more additives at a temperature of 60°C.
- Various lubricating compositions were prepared by combining a base oil (GTL 4, a Fischer-Tropsch derived base oil having a kinematic viscosity at 100°C of approximately 4 cSt, available from Shell) with ZDTP.
- the ZDTP was added in an amount so as to provide 0.08 wt% phosphorus in the final lubricating composition.
- the formulations also contained a nitrogen-containing ashless dispersant (designated as D1, D2, D3 or D4 in Table 1 below) in varying amounts to give lubricating compositions having varying amounts of nitrogen (0.05wt% N, 0.07wt%N or 0.1wt%N, by weight of the final lubricating compositions).
- Carbon black was also added to the lubricating compositions in an amount of 5wt%, by weight of the final lubricating compositions, in order to simulate the effect of the presence of soot in the lubricant.
- the nitrogen-containing ashless dispersants used in the present examples were polyisobutylene succinimides having the properties listed below in Table 1: Table 1 Dispersant Number PIB Mn Functionality (Fv) Maleation method Borated D1 2225 1.3 chloro No D2 2300 1.4 Thermal No D3 2225 1.5 Chloro No D4 2300 1.8 thermal No
- the lubricant formulations were subjected to a HFRR wear test.
- the HFRR High-Friction_Reciprocating Rig
- the test uses a 6 mm diameter steel ball loaded and reciprocated against the flat surface of a stationary steel disc immersed in lubricant. At the end of each test, the ball and disc were removed from the test rig, rinsed with toluene and iso-propanol, and then treated with a 0.05 wt% solution of ethylenediaminetetraacetic acid (EDTA) for 60 s.
- EDTA ethylenediaminetetraacetic acid
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Claims (2)
- Verwendung eines stickstoffhaltigen aschefreien Dispergiermittels in einer Schmiermittelzusammensetzung zum Zweck eines Verschleißminderns in der Gegenwart einer Zincdithiophosphatverbindung und Ruß, wobei das stickstoffhaltige aschefreie Dispergiermittel eine Funktionalität (F) von 1,5 bis 1,9 aufweist, wobei Funktionalität (F) gemäß der folgenden Formel bestimmt wird:wobei SAP die Verseifungszahl ist, wobei die Verseifungszahl die Zahl von Milligramm von KOH ist, die bei der vollständigen Neutralisation der Säuregruppen in einem Gramm des bernsteinsäurehaltigen Reaktionsprodukts verbraucht werden, wie gemäß ASTM D94 bestimmt; Mn die Zahl eines durchschnittlichen Molekulargewichts des Ausgangs-Olefinpolymers ist; A.I. der prozentuale Wirkstoff des bernsteinsäurehaltigen Reaktionsprodukts ist; und MW das Molekulargewicht des Dicarbonsäureproduzierenden Molekülteils ist,wobei das stickstoffhaltige aschefreie Dispergiermittel wenigstens ein Polyisobutylensuccinimid umfasst und wobei das stickstoffhaltige Dispergiermittel in der Schmiermittelzusammensetzung in einem Gehalt vorhanden ist, um einen Stickstoffgehalt von 0,05 Gew.-% bis 0,1 Gew.-% der Schmiermittelzusammensetzung bereitzustellen.
- Verwendung nach Anspruch 1, wobei die Schmiermittelzusammensetzung ein Basisöl und ein oder mehrere Additive umfasst.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP17168538 | 2017-04-27 | ||
PCT/EP2018/059960 WO2018197312A1 (en) | 2017-04-27 | 2018-04-18 | Lubricating composition |
Publications (2)
Publication Number | Publication Date |
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EP3615641A1 EP3615641A1 (de) | 2020-03-04 |
EP3615641B1 true EP3615641B1 (de) | 2022-04-13 |
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EP18724139.3A Active EP3615641B1 (de) | 2017-04-27 | 2018-04-18 | Verwendung eines dispersant in einer schmiermittelzusammensetzung |
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Country | Link |
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US (1) | US20200095516A1 (de) |
EP (1) | EP3615641B1 (de) |
JP (1) | JP2020517787A (de) |
CN (1) | CN110546243B (de) |
BR (1) | BR112019022507B1 (de) |
RU (1) | RU2768169C2 (de) |
WO (1) | WO2018197312A1 (de) |
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US11499107B2 (en) | 2018-07-02 | 2022-11-15 | Shell Usa, Inc. | Liquid fuel compositions |
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-
2018
- 2018-04-18 RU RU2019138210A patent/RU2768169C2/ru active
- 2018-04-18 EP EP18724139.3A patent/EP3615641B1/de active Active
- 2018-04-18 JP JP2019557584A patent/JP2020517787A/ja active Pending
- 2018-04-18 BR BR112019022507-2A patent/BR112019022507B1/pt active IP Right Grant
- 2018-04-18 WO PCT/EP2018/059960 patent/WO2018197312A1/en unknown
- 2018-04-18 CN CN201880026896.7A patent/CN110546243B/zh active Active
- 2018-04-18 US US16/607,927 patent/US20200095516A1/en not_active Abandoned
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RU2768169C2 (ru) | 2022-03-23 |
WO2018197312A1 (en) | 2018-11-01 |
BR112019022507A2 (pt) | 2020-05-12 |
RU2019138210A (ru) | 2021-05-27 |
US20200095516A1 (en) | 2020-03-26 |
JP2020517787A (ja) | 2020-06-18 |
RU2019138210A3 (de) | 2021-08-16 |
EP3615641A1 (de) | 2020-03-04 |
CN110546243B (zh) | 2022-09-23 |
CN110546243A (zh) | 2019-12-06 |
BR112019022507B1 (pt) | 2022-12-13 |
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