USRE39382E1 - Lubricating oil composition for high-temperature use - Google Patents
Lubricating oil composition for high-temperature use Download PDFInfo
- Publication number
- USRE39382E1 USRE39382E1 US10/703,025 US70302599A USRE39382E US RE39382 E1 USRE39382 E1 US RE39382E1 US 70302599 A US70302599 A US 70302599A US RE39382 E USRE39382 E US RE39382E
- Authority
- US
- United States
- Prior art keywords
- high temperature
- lubricant composition
- base oil
- weight
- antioxidant
- 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.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 59
- 239000010687 lubricating oil Substances 0.000 title 1
- 239000000314 lubricant Substances 0.000 claims abstract description 53
- 239000002199 base oil Substances 0.000 claims abstract description 33
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 30
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 28
- -1 aromatic ester compound Chemical class 0.000 claims description 29
- 125000004432 carbon atom Chemical group C* 0.000 claims description 19
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 14
- 229910052717 sulfur Inorganic materials 0.000 claims description 14
- 239000011593 sulfur Substances 0.000 claims description 14
- 239000004711 α-olefin Substances 0.000 claims description 14
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 10
- 239000011574 phosphorus Substances 0.000 claims description 10
- 229920001083 polybutene Polymers 0.000 claims description 7
- NAGJZTKCGNOGPW-UHFFFAOYSA-N dithiophosphoric acid Chemical class OP(O)(S)=S NAGJZTKCGNOGPW-UHFFFAOYSA-N 0.000 claims description 6
- QRLSTWVLSWCGBT-UHFFFAOYSA-N 4-((4,6-bis(octylthio)-1,3,5-triazin-2-yl)amino)-2,6-di-tert-butylphenol Chemical compound CCCCCCCCSC1=NC(SCCCCCCCC)=NC(NC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=N1 QRLSTWVLSWCGBT-UHFFFAOYSA-N 0.000 claims description 5
- ARCGXLSVLAOJQL-UHFFFAOYSA-N anhydrous trimellitic acid Natural products OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 claims description 5
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellityc acid Natural products OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 claims description 5
- 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 claims description 5
- 150000003580 thiophosphoric acid esters Chemical class 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 2
- 239000010409 thin film Substances 0.000 abstract description 8
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 abstract description 4
- 229910019142 PO4 Inorganic materials 0.000 description 17
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 17
- 239000010452 phosphate Substances 0.000 description 17
- 150000001875 compounds Chemical class 0.000 description 14
- 239000003921 oil Substances 0.000 description 14
- 235000019198 oils Nutrition 0.000 description 14
- 239000002253 acid Substances 0.000 description 11
- 239000005077 polysulfide Substances 0.000 description 10
- 229920001021 polysulfide Polymers 0.000 description 10
- 150000008117 polysulfides Polymers 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 150000001412 amines Chemical class 0.000 description 7
- 150000002148 esters Chemical class 0.000 description 7
- 150000003014 phosphoric acid esters Chemical class 0.000 description 7
- 125000002877 alkyl aryl group Chemical group 0.000 description 6
- 125000003342 alkenyl group Chemical group 0.000 description 5
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 5
- BTMRYSYEOPOPBR-UHFFFAOYSA-N CC.c1ccccc1 Chemical compound CC.c1ccccc1 BTMRYSYEOPOPBR-UHFFFAOYSA-N 0.000 description 4
- 150000001336 alkenes Chemical class 0.000 description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 4
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 4
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 4
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 description 4
- 125000003710 aryl alkyl group Chemical group 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 2
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 2
- BVUXDWXKPROUDO-UHFFFAOYSA-N 2,6-di-tert-butyl-4-ethylphenol Chemical compound CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 BVUXDWXKPROUDO-UHFFFAOYSA-N 0.000 description 2
- MDWVSAYEQPLWMX-UHFFFAOYSA-N 4,4'-Methylenebis(2,6-di-tert-butylphenol) Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 MDWVSAYEQPLWMX-UHFFFAOYSA-N 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RYYWUUFWQRZTIU-UHFFFAOYSA-N Thiophosphoric acid Chemical compound OP(O)(S)=O RYYWUUFWQRZTIU-UHFFFAOYSA-N 0.000 description 2
- 0 [6*][Sc]C1=NN=C(C[7*])S1.[6*][Sc]C1=NSC(C[7*])=N1 Chemical compound [6*][Sc]C1=NN=C(C[7*])S1.[6*][Sc]C1=NSC(C[7*])=N1 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 2
- 239000013530 defoamer Substances 0.000 description 2
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 230000000937 inactivator Effects 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- DPBLXKKOBLCELK-UHFFFAOYSA-N pentan-1-amine Chemical compound CCCCCN DPBLXKKOBLCELK-UHFFFAOYSA-N 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 125000005591 trimellitate group Chemical group 0.000 description 2
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- INKXYFUMUBZQKV-UHFFFAOYSA-N (2,3,4-triethylphenyl) dihydrogen phosphate Chemical compound CCC1=CC=C(OP(O)(O)=O)C(CC)=C1CC INKXYFUMUBZQKV-UHFFFAOYSA-N 0.000 description 1
- ZVOVXOUDTRRZFF-UHFFFAOYSA-N (2,3,4-tripropylphenyl) dihydrogen phosphate Chemical compound CCCC1=CC=C(OP(O)(O)=O)C(CCC)=C1CCC ZVOVXOUDTRRZFF-UHFFFAOYSA-N 0.000 description 1
- DAZHWGHCARQALS-UHFFFAOYSA-N (2-methylphenyl) (4-methylphenyl) phenyl phosphate Chemical compound C1=CC(C)=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1 DAZHWGHCARQALS-UHFFFAOYSA-N 0.000 description 1
- ZYURBDFDLBLSAM-UHFFFAOYSA-N (2-phenyl-3,4-dipropylphenyl) dihydrogen phosphate Chemical compound CCCC1=CC=C(OP(O)(O)=O)C(C=2C=CC=CC=2)=C1CCC ZYURBDFDLBLSAM-UHFFFAOYSA-N 0.000 description 1
- XOLRGGJVYFCUFJ-UHFFFAOYSA-N (3,4-diethyl-2-phenylphenyl) dihydrogen phosphate Chemical compound CCC1=CC=C(OP(O)(O)=O)C(C=2C=CC=CC=2)=C1CC XOLRGGJVYFCUFJ-UHFFFAOYSA-N 0.000 description 1
- JCDJGJCAOAFHSD-UHFFFAOYSA-N (4-butylphenyl) diphenyl phosphate Chemical compound C1=CC(CCCC)=CC=C1OP(=O)(OC=1C=CC=CC=1)OC1=CC=CC=C1 JCDJGJCAOAFHSD-UHFFFAOYSA-N 0.000 description 1
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- JTQQDDNCCLCMER-CLFAGFIQSA-N (z)-n-[(z)-octadec-9-enyl]octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCNCCCCCCCC\C=C/CCCCCCCC JTQQDDNCCLCMER-CLFAGFIQSA-N 0.000 description 1
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 1
- YGTAZGSLCXNBQL-UHFFFAOYSA-N 1,2,4-thiadiazole Chemical class C=1N=CSN=1 YGTAZGSLCXNBQL-UHFFFAOYSA-N 0.000 description 1
- QWUWMCYKGHVNAV-UHFFFAOYSA-N 1,2-dihydrostilbene Chemical group C=1C=CC=CC=1CCC1=CC=CC=C1 QWUWMCYKGHVNAV-UHFFFAOYSA-N 0.000 description 1
- MBIZXFATKUQOOA-UHFFFAOYSA-N 1,3,4-thiadiazole Chemical compound C1=NN=CS1 MBIZXFATKUQOOA-UHFFFAOYSA-N 0.000 description 1
- JIIXMZQZEAAIJX-UHFFFAOYSA-N 1-amino-3-phenylpropan-2-ol Chemical compound NCC(O)CC1=CC=CC=C1 JIIXMZQZEAAIJX-UHFFFAOYSA-N 0.000 description 1
- VIXJLJIOHUCFAI-UHFFFAOYSA-N 1-aminododecan-2-ol Chemical compound CCCCCCCCCCC(O)CN VIXJLJIOHUCFAI-UHFFFAOYSA-N 0.000 description 1
- GHJOEPMHSNXADF-UHFFFAOYSA-N 1-aminoicosan-2-ol Chemical compound CCCCCCCCCCCCCCCCCCC(O)CN GHJOEPMHSNXADF-UHFFFAOYSA-N 0.000 description 1
- BMVXCPBXGZKUPN-UHFFFAOYSA-N 1-hexanamine Chemical compound CCCCCCN BMVXCPBXGZKUPN-UHFFFAOYSA-N 0.000 description 1
- FXNDIJDIPNCZQJ-UHFFFAOYSA-N 2,4,4-trimethylpent-1-ene Chemical compound CC(=C)CC(C)(C)C FXNDIJDIPNCZQJ-UHFFFAOYSA-N 0.000 description 1
- LRYZVOQZDMSPCB-UHFFFAOYSA-N 2,5-bis(2,4,4-trimethylpentan-2-yldisulfanyl)-1,3,4-thiadiazole Chemical compound CC(C)(C)CC(C)(C)SSC1=NN=C(SSC(C)(C)CC(C)(C)C)S1 LRYZVOQZDMSPCB-UHFFFAOYSA-N 0.000 description 1
- PZNNGSFFFWVXLI-UHFFFAOYSA-N 2,5-bis(hexyldisulfanyl)-1,3,4-thiadiazole Chemical compound CCCCCCSSC1=NN=C(SSCCCCCC)S1 PZNNGSFFFWVXLI-UHFFFAOYSA-N 0.000 description 1
- MGEQSWVPSCZGEK-UHFFFAOYSA-N 2,5-bis(nonyldisulfanyl)-1,3,4-thiadiazole Chemical compound CCCCCCCCCSSC1=NN=C(SSCCCCCCCCC)S1 MGEQSWVPSCZGEK-UHFFFAOYSA-N 0.000 description 1
- ZFOMEJJNWNWWIB-UHFFFAOYSA-N 2,5-bis(octyldisulfanyl)-1,3,4-thiadiazole Chemical compound CCCCCCCCSSC1=NN=C(SSCCCCCCCC)S1 ZFOMEJJNWNWWIB-UHFFFAOYSA-N 0.000 description 1
- BIFHTUIYFKXCAU-UHFFFAOYSA-N 2-(dioctylamino)ethanol Chemical compound CCCCCCCCN(CCO)CCCCCCCC BIFHTUIYFKXCAU-UHFFFAOYSA-N 0.000 description 1
- BITAPBDLHJQAID-KTKRTIGZSA-N 2-[2-hydroxyethyl-[(z)-octadec-9-enyl]amino]ethanol Chemical compound CCCCCCCC\C=C/CCCCCCCCN(CCO)CCO BITAPBDLHJQAID-KTKRTIGZSA-N 0.000 description 1
- MIZIOHLLYXVEHJ-UHFFFAOYSA-N 2-[benzyl(2-hydroxyethyl)amino]ethanol Chemical compound OCCN(CCO)CC1=CC=CC=C1 MIZIOHLLYXVEHJ-UHFFFAOYSA-N 0.000 description 1
- GVNHOISKXMSMPX-UHFFFAOYSA-N 2-[butyl(2-hydroxyethyl)amino]ethanol Chemical compound CCCCN(CCO)CCO GVNHOISKXMSMPX-UHFFFAOYSA-N 0.000 description 1
- NKFNBVMJTSYZDV-UHFFFAOYSA-N 2-[dodecyl(2-hydroxyethyl)amino]ethanol Chemical compound CCCCCCCCCCCCN(CCO)CCO NKFNBVMJTSYZDV-UHFFFAOYSA-N 0.000 description 1
- OJPDDQSCZGTACX-UHFFFAOYSA-N 2-[n-(2-hydroxyethyl)anilino]ethanol Chemical compound OCCN(CCO)C1=CC=CC=C1 OJPDDQSCZGTACX-UHFFFAOYSA-N 0.000 description 1
- LIAWCKFOFPPVGF-UHFFFAOYSA-N 2-ethyladamantane Chemical compound C1C(C2)CC3CC1C(CC)C2C3 LIAWCKFOFPPVGF-UHFFFAOYSA-N 0.000 description 1
- LJKDOMVGKKPJBH-UHFFFAOYSA-N 2-ethylhexyl dihydrogen phosphate Chemical compound CCCCC(CC)COP(O)(O)=O LJKDOMVGKKPJBH-UHFFFAOYSA-N 0.000 description 1
- GPNYZBKIGXGYNU-UHFFFAOYSA-N 2-tert-butyl-6-[(3-tert-butyl-5-ethyl-2-hydroxyphenyl)methyl]-4-ethylphenol Chemical compound CC(C)(C)C1=CC(CC)=CC(CC=2C(=C(C=C(CC)C=2)C(C)(C)C)O)=C1O GPNYZBKIGXGYNU-UHFFFAOYSA-N 0.000 description 1
- OHOUFTLYDXSBFQ-UHFFFAOYSA-N 3,5-bis(2,4,4-trimethylpentan-2-yldisulfanyl)-1,2,4-thiadiazole Chemical compound CC(C)(C)CC(C)(C)SSC1=NSC(SSC(C)(C)CC(C)(C)C)=N1 OHOUFTLYDXSBFQ-UHFFFAOYSA-N 0.000 description 1
- BYSSNTJJRCNLLJ-UHFFFAOYSA-N 3,5-bis(hexyldisulfanyl)-1,2,4-thiadiazole Chemical compound CCCCCCSSC1=NSC(SSCCCCCC)=N1 BYSSNTJJRCNLLJ-UHFFFAOYSA-N 0.000 description 1
- RQJARQMHCGCFTA-UHFFFAOYSA-N 3,5-bis(nonyldisulfanyl)-1,2,4-thiadiazole Chemical compound CCCCCCCCCSSC1=NSC(SSCCCCCCCCC)=N1 RQJARQMHCGCFTA-UHFFFAOYSA-N 0.000 description 1
- NMNLMUYVHBRPBO-UHFFFAOYSA-N 3,5-bis(octyldisulfanyl)-1,2,4-thiadiazole Chemical compound CCCCCCCCSSC1=NSC(SSCCCCCCCC)=N1 NMNLMUYVHBRPBO-UHFFFAOYSA-N 0.000 description 1
- TVDZNGHKRSKPCD-UHFFFAOYSA-N 4-heptyl-n-(4-heptylphenyl)aniline Chemical compound C1=CC(CCCCCCC)=CC=C1NC1=CC=C(CCCCCCC)C=C1 TVDZNGHKRSKPCD-UHFFFAOYSA-N 0.000 description 1
- FCQAFXHLHBGGSK-UHFFFAOYSA-N 4-nonyl-n-(4-nonylphenyl)aniline Chemical compound C1=CC(CCCCCCCCC)=CC=C1NC1=CC=C(CCCCCCCCC)C=C1 FCQAFXHLHBGGSK-UHFFFAOYSA-N 0.000 description 1
- ADRNSOYXKABLGT-UHFFFAOYSA-N 8-methylnonyl diphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OCCCCCCCC(C)C)OC1=CC=CC=C1 ADRNSOYXKABLGT-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- DWLMIYNUGWGKQW-UHFFFAOYSA-N C(CCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCC)CCCC)CCCC Chemical compound C(CCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCC)CCCC)CCCC DWLMIYNUGWGKQW-UHFFFAOYSA-N 0.000 description 1
- WFHKDFKMMXNXBE-UHFFFAOYSA-N C(CCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCC)CCCCCC)CCCCCC Chemical compound C(CCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCC)CCCCCC)CCCCCC WFHKDFKMMXNXBE-UHFFFAOYSA-N 0.000 description 1
- QZHGURFFNXQTML-UHFFFAOYSA-N C(CCCCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCCCC)CCCCCCCC)CCCCCCCC Chemical compound C(CCCCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCCCC)CCCCCCCC)CCCCCCCC QZHGURFFNXQTML-UHFFFAOYSA-N 0.000 description 1
- YNLGQWRNZWQQMD-UHFFFAOYSA-N C(CCCCCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCCCCC)CCCCCCCCC)CCCCCCCCC Chemical compound C(CCCCCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCCCCC)CCCCCCCCC)CCCCCCCCC YNLGQWRNZWQQMD-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BWLUMTFWVZZZND-UHFFFAOYSA-N Dibenzylamine Chemical compound C=1C=CC=CC=1CNCC1=CC=CC=C1 BWLUMTFWVZZZND-UHFFFAOYSA-N 0.000 description 1
- XBPCUCUWBYBCDP-UHFFFAOYSA-N Dicyclohexylamine Chemical compound C1CCCCC1NC1CCCCC1 XBPCUCUWBYBCDP-UHFFFAOYSA-N 0.000 description 1
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 description 1
- 239000003508 Dilauryl thiodipropionate Substances 0.000 description 1
- 239000002656 Distearyl thiodipropionate Substances 0.000 description 1
- LVGKNOAMLMIIKO-UHFFFAOYSA-N Elaidinsaeure-aethylester Natural products CCCCCCCCC=CCCCCCCCC(=O)OCC LVGKNOAMLMIIKO-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- QYDYPVFESGNLHU-KHPPLWFESA-N Methyl oleate Natural products CCCCCCCC\C=C/CCCCCCCC(=O)OC QYDYPVFESGNLHU-KHPPLWFESA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 1
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
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- DECPGQLXYYCNEZ-UHFFFAOYSA-N tris(6-methylheptyl) phosphite Chemical compound CC(C)CCCCCOP(OCCCCCC(C)C)OCCCCCC(C)C DECPGQLXYYCNEZ-UHFFFAOYSA-N 0.000 description 1
- QQBLOZGVRHAYGT-UHFFFAOYSA-N tris-decyl phosphite Chemical compound CCCCCCCCCCOP(OCCCCCCCCCC)OCCCCCCCCCC QQBLOZGVRHAYGT-UHFFFAOYSA-N 0.000 description 1
- SVETUDAIEHYIKZ-IUPFWZBJSA-N tris[(z)-octadec-9-enyl] phosphate Chemical compound CCCCCCCC\C=C/CCCCCCCCOP(=O)(OCCCCCCCC\C=C/CCCCCCCC)OCCCCCCCC\C=C/CCCCCCCC SVETUDAIEHYIKZ-IUPFWZBJSA-N 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000010698 whale oil Substances 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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- 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
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
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- 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
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/20—Thiols; Sulfides; Polysulfides
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- 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
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- 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
- C10M2205/022—Ethene
- C10M2205/0225—Ethene used as base material
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- 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
- C10M2205/026—Butene
- C10M2205/0265—Butene used as base material
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- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
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- 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
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
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- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/024—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings having at least two phenol groups but no condensed ring
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/2805—Esters used as base material
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- 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
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- 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
- C10M2207/284—Esters of aromatic monocarboxylic acids
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- 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
- C10M2207/285—Esters of aromatic polycarboxylic acids
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- 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
- C10M2207/285—Esters of aromatic polycarboxylic acids
- C10M2207/2855—Esters of aromatic polycarboxylic acids used as base material
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- 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
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- 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
- C10M2207/345—Esters having a hydrocarbon substituent of thirty or more carbon atoms, e.g. substituted succinic acid derivatives used as base material
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- 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
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/062—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings containing hydroxy groups bound to the aromatic ring
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
- C10M2215/065—Phenyl-Naphthyl amines
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M2219/022—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of hydrocarbons, e.g. olefines
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
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- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
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- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
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- 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
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- 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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- 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
- C10M2223/049—Phosphite
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/38—Conveyors or chain belts
Definitions
- the present invention relates to a lubricant composition for a high temperature. More specifically, it relates to a lubricant composition for a high temperature which is used in a chain, a roller chain, a chain conveyor, a bearing and the like.
- a lubricant which is used ina chain, a roller chain, a chain conveyor, a bearing and the like is exposed to a high temperature, an amount of a lubricant evaporated greatly influences a life of an apparatus.
- a lubricant loses an ordinary viscosity under a condition of a high temperature and becomes a thin film, so that an amount of a lubricant evaporated has to be controlled under severer conditions.
- high-molecular oil with a high viscosity has been used to control an amount evaporated. Although an amount of such oil evaporated is small, a power loss is great, and it is undesirable in view of a total performance of a lubricant.
- a lubricant for a high temperature of which the amount evaporated in a thin film at a high temperature is controlled and of which the fluidity is maintained for a long period of time has been in demand.
- the present invention aims to provide a lubricant composition for a high temperature of which the amount evaporated in a thin film at a high temperature is controlled and of which the fluidity is maintained for a long period of time.
- the present inventors have assiduously conducted investigations, and have consequently found that the aim of the present invention can be achieved by using a specific aromatic ester compound as base oil. This finding has led to the completion of the present invention.
- the gist of the present invention is as follows.
- the base oil composition constituting the lubricant composition for the high temperature in the present invention comprises (a) 20 to 100% by weight of the aromatic ester compound represented by the above general formula (I) and (b) 0 to 80% by weight of another base oil.
- the number of carboxylic acids bound to benzene is preferably 3 or 4.
- trimellitic acid and pyromellitic acid are preferable.
- an aliphatic alcohol used in the aromatic carboxylic acid ester a linear or branched alcohol having 6 to 16 carbon atoms is preferable.
- aromatic carboxylic acid esters may be used either singly or in admixture of two or more types, and a partial ester may be contained in a full ester.
- any mineral oil type or synthetic oil type that is used as base oil of ordinary equipment oil can be used.
- the mineral oil-type base oil for example, refined oil which is formed by refining a lubricant fraction resulting from atmospheric distillation or vacuum distillation of paraffin base crude oil, intermediate base crude oil or naphthene base crude oil by an ordinary method such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrogenation refining, sulfuric acid treatment, clay treatment or the like.
- the synthetic oil-type base oil various substances such as an ⁇ -olefin oligomer, an ethylene- ⁇ -oligomer, a polybutene, a dibasic acid ester, a polyalkylene glycol, a hindered ester, an alkylbenzene, an alkylnaphthalene, a polyether and the like can be used.
- an ⁇ -olefin oligomer, an ethylene- ⁇ -oligomer, a polybutene or hydrogenated substances thereof are preferable because the fluidity can be maintained for a long period of time.
- component (b) one type or a mixture of two or more types may be used, and a mixture of mineral oil and synthetic oil may be used.
- the proportions of the aromatic carboxylic acid ester (a) and another base oil (b) are that component (a) is 20 to 100% by weight and component (b) is 0 to 80% by weight, and preferably component (a) is 30 to 80% by weight and component (b) is 20 to 70% by weight. When component (a) is less than 20% by weight, the effect of the invention is not provided.
- an amine-type antioxidant and a phenolic antioxidant can be used.
- an antioxidant containing sulfur and/or phosphorus in a molecule is preferable.
- amine-type antioxidant examples include monoalkyldiphenylamines such as monooctyldiphenylamine, monononyldiphenylamine and the like; dialkyldiphenylamines such as 4,4′-dibutyldiphenylamine, 4,4′-dipentyldiphenylamine, 4,4′-dihexyldiphenylamine, 4,4′-diheptyldiphenylamine, 4,4′-dioctyldiphenylamine, 4,4′-dinonyldiphenylamine and the like; polyalkyldiphenylamines such as tetrabutyldiphenylamine, tetrahexyldiphenylamine, tetraoctyldiphenylamine, tetranonyldiphenylamine and the like; and naphthylamines such as ⁇ -naphthylamine, phenyl- ⁇ -nap
- phenolic antioxidant can include monophenols such as 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-4-ethylphenol and the like; and diphenols such as 4,4′-methylenebis(2,6-di-tert-butylphenol), 2,2′-methylenebis(4-ethyl-6-tert-butylphenol) and the like.
- antioxidant containing sulfur and/or phosphorus in the molecule can be an additive containing sulfur and/or phosphorus in a molecule and having an antioxidant ability, and it may be added for the other purpose.
- the antioxidant containing sulfur in the molecule is described.
- sulfurized oil sulfurized mineral oil, a sulfurized fatty acid, a sulfurized ester, a sulfurized olefin, dihydrocarbyl polysulfide, a thiadiazole compound, an alkylthiocarbamoyl compound, a triazine compound, a thioterpene compound, a dialkylthiodipropionate compound and the like can be mentioned.
- sulfurized oil is oil obtained by reacting sulfur or a sulfur-containing compound with oil (lard, whale oil, vegetable oil, fish oil or the like), and the sulfur content is not particularly limited. Generally, it is preferably between 5 and 30% by weight. Specific examples thereof include sulfurized lard, sulfurized rapeseed oil, sulfurized castor oil, sulfurized soybean oil, sulfurized rice bran oil and the like.
- sulfurized fatty acid include sulfurized oleic acid and the like.
- sulfurized ester include sulfurized oleic acid methyl ester, sulfurized rice bran fatty acid octyl ester and the like.
- sulfurized olefin for example, a compound represented by the following general formula (II) R 2 —S a —R 3 (II)
- dihydrocarbyl polysulfide is a compound represented by the following general formula (III) R 4 —S b —R 5 (III)
- R 4 and R 5 in the above general formula (III) include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, various nonyl groups, various decyl groups, various dodecyl groups, a cyclohexyl group, a cyclooctyl group, a phenyl group, a naphthyl group, a tolyl group, a xylyl group, a benzyl group, a phenetyl group and the like.
- dihydrocarbyl polysulfide examples include dibenzyl polysulfide, various dinonyl polysulfides, various didodecyl polysulfides, various dibutyl polysulfides, various dioctyl polysulfides, diphenyl polysulfide, dicyclohexyl polysulfide and the like.
- thiadiazole compound for example, 1,3,4-thiadiazole and 1,2,4-thiadiazole compounds represented by the following general formulas (IV)
- thiadiazole compounds can include 2,5-bis(n-hexyldithio)-1,3,4-thiadiazole, 2,5-bis(n-octyldithio)-1,3,4-thiadiazole, 2,5-bis(n-nonyldithio)-1,3,4-thiadiazole, 2,5-bis(1,1,3,3-tetramethylbutyldithio)-1,3,4-thiadiazole, 3,5-bis(n-hexyldithio)-1,2,4-thiadiazole, 3,5-bis(n-octyldithio)-1,2,4-thiadiazole, 3,5-bis(n-nonyldithio)-1,2,4-thiadiazole, 3,5-bis(1,1,3,3-tetramethylbutyldithio)-1,2,4-thiadiazole and the like.
- alkylthiocarbamoyl compound for example, a compound represented by the following general formula (V)
- alkylthiocarbamoyl compound examples include bis(dimethylthiocarbamoyl) monosulfide, bis(dibutylthiocarbamoyl) monosulfide, bis(dimethylthiocarbamoyl) disulfide, bis(dibutylthiocarbamoyl) disulfide, bis(diamylthiocarbamoyl) disulfide, bis(dioctylthiocarbamoyl) disulfide and the like.
- triazine compound examples include 2,6-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazin-2-ylamino)phenol and the like.
- examples of the thioterpene compound include a reaction product of phosphorus pentasulfide and pinene.
- examples of the dialkylthiodipropionate compound include dilaurylthiodipropionate, distearylthiodipropionate and the like.
- a zinc dialkyldithiocarbamate Zn-DTC
- Mo-DTC molybdenum dialkyldithiocarbamate
- a lead dialkyldithiocarbamate a tin dialkyldithiocarbamate, sodium sulfonate, calcium sulfonate and the like
- Zn-DTC zinc dialkyldithiocarbamate
- Mo-DTC molybdenum dialkyldithiocarbamate
- a lead dialkyldithiocarbamate a tin dialkyldithiocarbamate
- sodium sulfonate calcium sulfonate and the like
- Typical examples include phosphoric acid esters and amine salts thereof.
- the phosphoric acid esters include a phosphoric acid ester, an acid phosphoric acid ester, a phosphorous acid ester and an acid phosphorous acid ester represented by the following general formulas (VI) to (X).
- R 12 to R 14 each represent an alkyl group, an alkenyl group, an alkylaryl group and an arylalkyl group having 4 to 30 carbon atoms, and R 12 to R 14 may be the same or different.
- the phosphoric acid ester includes a triaryl phosphate, a trialkyl phosphate, a trialkylaryl phosphate, a triarylalkyl phosphate, a trialkenyl phosphate and the like. Specific examples thereof include triphenyl phosphate, tricresyl phosphate, benzyldiphenyl phosphate, ethyldiphenyl phosphate, tributyl phosphate, ethyldibutyl phosphate, cresyldiphenyl phosphate, dicresylphenyl phosphate, ethylphenyldiphenyl phosphate, diethylphenylphenyl phosphate, propylphenyldiphenyl phosphate, dipropylphenylphenyl phosphate, triethylphenyl phosphate, tripropylphenyl phosphate, butylphenyldiphenyl phosphate, dibuty
- the acid phosphoric acid ester examples include 2-ethylhexyl acid phosphate, ethyl acid phosphate, butyl acid phosphate, oleyl acid phosphate, tetracosyl acid phosphate, isodecyl acid phosphate, lauryl acid phosphate, tridecyl acid phosphate, stearyl acid phosphate, isostearyl acid phosphate and the like.
- the phosphorous acid ester examples include triethyl phosphite, tributyl phosphite, triphenyl phosphite, tricresyl phosphite, tri(nonylphenyl) phosphite, tri(2-ethylhexyl) phosphite, tridecyl phosphite, trilauryl phosphite, triisooctyl phosphite, diphenylisodecyl phosphite, tristearyl phosphite, trioleyl phosphite and the like.
- acid phosphorous acid ester examples include dibutylhydrogen phosphite, dilaurylhydrogen phosphite, dioleylhydrogen phosphite, distearylhydrogen phosphite, diphenylhydrogen phosphite and the like.
- amines forming amine salts with these include a mono-substituted amine, a di-substituted amine and a tri-substituted amine represented by the general formula (XI) R 15 m NH 3-m (XI)
- examples of the mono-substituted amine can include butylamine, pentylamine, hexylamine, cyclohexylamine, octylamine, laurylamine, stearylamine, oleylamine, benzylamine and the like.
- di-substituted amine can include dibutylamine, dipentylamine, dihexylamine, dicyclohexylamine, dioctylamine, dilaurylamine, distearylamine, dioleylamine, dibenzylamine, stearyl-monoethanolamine, decyl-monoethanolamine, hexyl-monopropanolamine, benzyl-monoethanolamine, phenyl-monoethanolamine, tolyl-monopropanol amide and the like.
- tri-substituted amine examples include tributylamine, tripentylamine, trihexylamine, tricyclohexylamine, trioctylamine, trilaurylamine, tristearylamine, trioleylamine, tribenzylamine, dioleyl-monoethanolamine, dilauryl monopropanolamine, dioctyl-monoethanolamine, dihexyl-monopropanolamine, dibutyl-monopropanolamine, oleyl-diethanol amine, stearyl-dipropanolamine, lauryl-diethanolamine, octyl-dipropanolamine, butyl-diethanolamine, benzyl-diethanolamine, phenyl-diethanolamine, tolyl-dipropanolamine, xylyl-diethanolamine, triethanolamine, tripropanolamine and the like.
- antioxidant containing phosphorus and a halogen atom can include a chlorinated phosphoric acid ester.
- antioxidant containing sulfur and phosphorus in the molecule can include phosphorus sulfide oil, a phosphorus sulfide olefin, a thiophosphoric acid ester (thiophosphite and thiophosphate) and the like.
- a thiophosphite (alkylaryl type) and a thiophosphate (alkylaryl type) are preferable.
- antioxidant containing sulfur, phosphorus and a metal can include dithiophosphoric acid salts such as zinc dithiophosphate (Zn-DTP), molybdenum dithiophosphate (Mo-DTP), lead dithiophosphate, tin dithiophosphate and the like.
- dithiophosphoric acid salts such as zinc dithiophosphate (Zn-DTP), molybdenum dithiophosphate (Mo-DTP), lead dithiophosphate, tin dithiophosphate and the like.
- antioxidants 2,6-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazin-2-ylamino)phenol, Zn-DTP(alkylaryl type), a thiophosphite (alkyl type) and a thiophosphate (alkylaryl type) are preferable.
- antioxidants can be used either singly or in combination.
- the preferable mixing amount of the above antioxidant is in the range of 0.1 to 10% by weight based on the total amount of the composition.
- the mixing amount is less than 0.1% by weight, the aim of the present invention is not fully exhibited.
- it exceeds 10% by weight the improvement in the effect is sometimes not observed even with this amount, and the solubility in base oil is sometimes decreased.
- the more preferable mixing amount is in the range of 1 to 7% by weight.
- the lubricant composition for the high temperature in the present invention can contain various known additives such as a rust-proofing agent, a detergent-dispersant, a metal inactivator, a defoamer and the like as required unless the aim of the present invention is impaired.
- Examples of the rust-proofing agent can include a metal sulfonate, a succinic acid ester and the like.
- detergent-dispersant can include a metal sulfonate, a metal salicylate, a metal finate, a succinic acid imide and the like.
- metal inactivator examples include benzotriazole, thiadiazole and the like.
- defoamer examples include methyl silicone oil, fluorosilicone oil, a polyacrylate and the like.
- the kinematic viscosity at 40° C. of the lubricant composition for the high temperature in the present invention is adjusted to 10 to 50 mm 2 /s in order to achieve the aim. It is more preferably in the range of 50 to 320 mm 2 /s.
- the lubricant composition for the high temperature in the present invention is preferably used when the temperature exceeds 150° C. in a time of more than 50% of the use period.
- base oil was mixed with an antioxidant to prepare a lubricant composition.
- the mixing was conducted by adjusting a viscosity of an ⁇ -olefin oligomer, whereby the kinematic viscosity at 40° C. was all adjusted to 220 mm 2 /s.
- a thin film residue test was conducted in the following manner. Further, a container was inclined, and the fluidity at that time was visually evaluated. The results are shown in Table 1.
- the amount of the residue was measured at 200° C. for 24 hours using a container and a constant-temperature air bath indicated ina lubricant heat stability test of JIS K2540. This was expressed in terms of percentage, and defined as a residue ratio. By the way, 10 liters/hr of air was always caused to flow in during the measurement.
- a lubricant composition for a high temperature of which the amount evaporated in a thin film at a high temperature is controlled and of which the fluidity is maintained for a long period of time can be provided.
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Abstract
The present invention relates to a lubricant composition for a high temperature of which the amount evaporated in a thin film at a high temperature is controlled and of which the fluidity is maintained for a long period of time, and it is a lubricant composition for a high temperature which is obtained by mixing a base oil composition comprising (a) 20 to 100% by weight of a specific aromatic ester and (b) 0 to 80% by weight of another base oil with (c) 0.1 to 10% by weight, based on the total amount of the lubricant composition, of an antioxidant.
Description
The present invention relates to a lubricant composition for a high temperature. More specifically, it relates to a lubricant composition for a high temperature which is used in a chain, a roller chain, a chain conveyor, a bearing and the like.
Since a lubricant which is used ina chain, a roller chain, a chain conveyor, a bearing and the like is exposed to a high temperature, an amount of a lubricant evaporated greatly influences a life of an apparatus. Thus, a lubricant loses an ordinary viscosity under a condition of a high temperature and becomes a thin film, so that an amount of a lubricant evaporated has to be controlled under severer conditions. As an ordinary lubricant for a high temperature, high-molecular oil with a high viscosity has been used to control an amount evaporated. Although an amount of such oil evaporated is small, a power loss is great, and it is undesirable in view of a total performance of a lubricant. Further, when such oil is exposed to a thin film and a high temperature, a residual amount is large, but it is solidified. Not only are characteristics as a liquid lost, but also it becomes a solidified sludge to prevent flow of oil, inviting poor lubrication of a lubricating portion. Accordingly, a lubricant for a high temperature of which the amount evaporated in a thin film at a high temperature is controlled and of which the fluidity is maintained for a long period of time has been in demand.
From this standpoint, the present invention has been made, and it aims to provide a lubricant composition for a high temperature of which the amount evaporated in a thin film at a high temperature is controlled and of which the fluidity is maintained for a long period of time.
The present inventors have assiduously conducted investigations, and have consequently found that the aim of the present invention can be achieved by using a specific aromatic ester compound as base oil. This finding has led to the completion of the present invention.
That is, the gist of the present invention is as follows.
-
- (1) A lubricant composition for a high temperature which is obtained by mixing a base oil composition comprising (a) 20 to 100% by weight of an aromatic ester compound represented by the following general formula (I)
- (wherein R1 represents an alkyl group having 6 to 16 carbon atoms, and n represents an integer of 1 to 6)
- and (b) 0 to 80% by weight of another base oil with (c) 0.1 to 10% by weight, based on the total amount of the lubricant composition, of an antioxidant.
- (2) The lubricant composition for the high temperature as recited in the above (1), wherein the base oil composition comprises (a) 30 to 80% by weight of the aromatic ester compound and (b) 20 to 70% by weight of another base oil.
- (3) The lubricant composition for the high temperature as recited in the above (1) or (2), wherein the aromatic ester compound (a) is one selected from a trimellitic acid alkyl ester and a pyromellitic acid alkyl ester.
- (4) The lubricant composition for the high temperature as recited in any of the above (1) to (3), wherein another base oil (b) is one type or two or more types selected from an α-olefin oligomer, an ethylene-α-olefin oligomer, polybutene and hydrogenated substances thereof.
- (5) The lubricant composition for the high temperature as recited in any of the above (1) to (4), wherein the antioxidant (c) is one containing sulfur and/or phosphorus in a molecule.
- (6) The lubricant composition for the high temperature as recited in any of the above (1) to (5), wherein the antioxidant is one selected from a dithiophosphoric acid salt and a thiophosphoric acid ester.
- (7) The lubricant composition for the high temperature as recited in any of the above (1) to (5), wherein the antioxidant is 2,6-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazin-2-ylamino)phenol.
- (1) A lubricant composition for a high temperature which is obtained by mixing a base oil composition comprising (a) 20 to 100% by weight of an aromatic ester compound represented by the following general formula (I)
The mode for carrying out the present invention is described below.
The base oil composition constituting the lubricant composition for the high temperature in the present invention comprises (a) 20 to 100% by weight of the aromatic ester compound represented by the above general formula (I) and (b) 0 to 80% by weight of another base oil.
With respect to the aromatic carboxylic acid constituting the aromatic ester compound as component (a), the number of carboxylic acids bound to benzene is preferably 3 or 4. Among others, trimellitic acid and pyromellitic acid are preferable. As an aliphatic alcohol used in the aromatic carboxylic acid ester, a linear or branched alcohol having 6 to 16 carbon atoms is preferable. Specific examples thereof can include tri-n-hexyl trimellitate, tri-2-ethylhexyl trimellitate, tri-n-octyl trimellitate, tri-3,5,5-trimethylhexyl trimellitate, tetra-n-hexyl pyromellitate, tetra-2-ethylhexyl pyromellitate, tetra-n-octyl pyromellitate, tetra-3,5,5-trimethylhexyl pyromellitate and the like. Incidentally, the aromatic carboxylic acid esters may be used either singly or in admixture of two or more types, and a partial ester may be contained in a full ester.
As another base oil (b), any mineral oil type or synthetic oil type that is used as base oil of ordinary equipment oil can be used. As the mineral oil-type base oil, for example, refined oil which is formed by refining a lubricant fraction resulting from atmospheric distillation or vacuum distillation of paraffin base crude oil, intermediate base crude oil or naphthene base crude oil by an ordinary method such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, hydrogenation refining, sulfuric acid treatment, clay treatment or the like.
Further, as the synthetic oil-type base oil, various substances such as an α-olefin oligomer, an ethylene-α-oligomer, a polybutene, a dibasic acid ester, a polyalkylene glycol, a hindered ester, an alkylbenzene, an alkylnaphthalene, a polyether and the like can be used. Of these, an α-olefin oligomer, an ethylene-α-oligomer, a polybutene or hydrogenated substances thereof are preferable because the fluidity can be maintained for a long period of time. Incidentally, as component (b), one type or a mixture of two or more types may be used, and a mixture of mineral oil and synthetic oil may be used.
The proportions of the aromatic carboxylic acid ester (a) and another base oil (b) are that component (a) is 20 to 100% by weight and component (b) is 0 to 80% by weight, and preferably component (a) is 30 to 80% by weight and component (b) is 20 to 70% by weight. When component (a) is less than 20% by weight, the effect of the invention is not provided.
Next, with respect to the antioxidant as component (c) mixed with base oil, an amine-type antioxidant and a phenolic antioxidant can be used. In view of the effect, an antioxidant containing sulfur and/or phosphorus in a molecule is preferable.
Examples of the amine-type antioxidant include monoalkyldiphenylamines such as monooctyldiphenylamine, monononyldiphenylamine and the like; dialkyldiphenylamines such as 4,4′-dibutyldiphenylamine, 4,4′-dipentyldiphenylamine, 4,4′-dihexyldiphenylamine, 4,4′-diheptyldiphenylamine, 4,4′-dioctyldiphenylamine, 4,4′-dinonyldiphenylamine and the like; polyalkyldiphenylamines such as tetrabutyldiphenylamine, tetrahexyldiphenylamine, tetraoctyldiphenylamine, tetranonyldiphenylamine and the like; and naphthylamines such as α-naphthylamine, phenyl-α-naphthylamine, butylphenyl-α-naphthylamine, pentylphenyl-α-naphthylamine, hexylphenyl-α-naphthylamine, heptylphenyl-α-naphthylamine, octylphenyl-α-naphthylamine, nonylphenyl-α-naphthylamine and the like.
Examples of the phenolic antioxidant can include monophenols such as 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-4-ethylphenol and the like; and diphenols such as 4,4′-methylenebis(2,6-di-tert-butylphenol), 2,2′-methylenebis(4-ethyl-6-tert-butylphenol) and the like.
Examples of the antioxidant containing sulfur and/or phosphorus in the molecule can be an additive containing sulfur and/or phosphorus in a molecule and having an antioxidant ability, and it may be added for the other purpose.
First, the antioxidant containing sulfur in the molecule is described. For example, sulfurized oil, sulfurized mineral oil, a sulfurized fatty acid, a sulfurized ester, a sulfurized olefin, dihydrocarbyl polysulfide, a thiadiazole compound, an alkylthiocarbamoyl compound, a triazine compound, a thioterpene compound, a dialkylthiodipropionate compound and the like can be mentioned.
Here, sulfurized oil is oil obtained by reacting sulfur or a sulfur-containing compound with oil (lard, whale oil, vegetable oil, fish oil or the like), and the sulfur content is not particularly limited. Generally, it is preferably between 5 and 30% by weight. Specific examples thereof include sulfurized lard, sulfurized rapeseed oil, sulfurized castor oil, sulfurized soybean oil, sulfurized rice bran oil and the like. Examples of the sulfurized fatty acid include sulfurized oleic acid and the like. Examples of the sulfurized ester include sulfurized oleic acid methyl ester, sulfurized rice bran fatty acid octyl ester and the like.
As the sulfurized olefin, for example, a compound represented by the following general formula (II)
R2—Sa—R3 (II)
R2—Sa—R3 (II)
-
- (wherein R2 represents an alkenyl group having 2 to 15 carbon atoms, R3 represents an alkyl group or an alkenyl group having 2 to 15 carbon atoms, and a represents an integer of 1 to 8).
This compound is obtained by reacting an olefin having 2 to 15 carbon atoms or its dimer to tetramer with a sulfurizing agent such as sulfur, sulfur chloride or the like. As the olefin, propylene, isobutene, diisobutene or the like is preferable.
- (wherein R2 represents an alkenyl group having 2 to 15 carbon atoms, R3 represents an alkyl group or an alkenyl group having 2 to 15 carbon atoms, and a represents an integer of 1 to 8).
Further, the dihydrocarbyl polysulfide is a compound represented by the following general formula (III)
R4—Sb—R5 (III)
R4—Sb—R5 (III)
-
- (wherein R4 and R5 each represent an alkyl group or a cyclic alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkylaryl group having 7 to 20 carbon atoms or an arylalkyl group having 7 to 20 carbon atoms, and these may be the same or different, and b represents an integer of 2 to 8).
When R4 and Rs therein are alkyl groups, it is called an alkyl sulfide.
- (wherein R4 and R5 each represent an alkyl group or a cyclic alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkylaryl group having 7 to 20 carbon atoms or an arylalkyl group having 7 to 20 carbon atoms, and these may be the same or different, and b represents an integer of 2 to 8).
Specific examples of R4 and R5 in the above general formula (III) include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, various pentyl groups, various hexyl groups, various heptyl groups, various octyl groups, various nonyl groups, various decyl groups, various dodecyl groups, a cyclohexyl group, a cyclooctyl group, a phenyl group, a naphthyl group, a tolyl group, a xylyl group, a benzyl group, a phenetyl group and the like.
Preferable examples of the dihydrocarbyl polysulfide include dibenzyl polysulfide, various dinonyl polysulfides, various didodecyl polysulfides, various dibutyl polysulfides, various dioctyl polysulfides, diphenyl polysulfide, dicyclohexyl polysulfide and the like.
As the thiadiazole compound, for example, 1,3,4-thiadiazole and 1,2,4-thiadiazole compounds represented by the following general formulas (IV)
-
- (wherein R6 and R7 each represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and c and d each represent an integer of 0 to 8)
are preferably used.
- (wherein R6 and R7 each represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and c and d each represent an integer of 0 to 8)
Specific examples of the thiadiazole compounds can include 2,5-bis(n-hexyldithio)-1,3,4-thiadiazole, 2,5-bis(n-octyldithio)-1,3,4-thiadiazole, 2,5-bis(n-nonyldithio)-1,3,4-thiadiazole, 2,5-bis(1,1,3,3-tetramethylbutyldithio)-1,3,4-thiadiazole, 3,5-bis(n-hexyldithio)-1,2,4-thiadiazole, 3,5-bis(n-octyldithio)-1,2,4-thiadiazole, 3,5-bis(n-nonyldithio)-1,2,4-thiadiazole, 3,5-bis(1,1,3,3-tetramethylbutyldithio)-1,2,4-thiadiazole and the like.
As the alkylthiocarbamoyl compound, for example, a compound represented by the following general formula (V)
-
- (wherein R8 to R11 each represent an alkyl group having 1 to 20 carbon atoms, and e represents an integer of 1 to 8)
can preferably be used.
- (wherein R8 to R11 each represent an alkyl group having 1 to 20 carbon atoms, and e represents an integer of 1 to 8)
Specific examples of the alkylthiocarbamoyl compound include bis(dimethylthiocarbamoyl) monosulfide, bis(dibutylthiocarbamoyl) monosulfide, bis(dimethylthiocarbamoyl) disulfide, bis(dibutylthiocarbamoyl) disulfide, bis(diamylthiocarbamoyl) disulfide, bis(dioctylthiocarbamoyl) disulfide and the like.
Preferable examples of the triazine compound include 2,6-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazin-2-ylamino)phenol and the like.
Further, examples of the thioterpene compound include a reaction product of phosphorus pentasulfide and pinene. Examples of the dialkylthiodipropionate compound include dilaurylthiodipropionate, distearylthiodipropionate and the like.
Further, as the antioxidant containing sulfur and a metal, a zinc dialkyldithiocarbamate (Zn-DTC), a molybdenum dialkyldithiocarbamate (Mo-DTC), a lead dialkyldithiocarbamate, a tin dialkyldithiocarbamate, sodium sulfonate, calcium sulfonate and the like can also be used.
Next, the antioxidant containing phosphorus in the molecule is described. Typical examples include phosphoric acid esters and amine salts thereof.
The phosphoric acid esters include a phosphoric acid ester, an acid phosphoric acid ester, a phosphorous acid ester and an acid phosphorous acid ester represented by the following general formulas (VI) to (X).
In the general formulas (VI) to (X), R12 to R14 each represent an alkyl group, an alkenyl group, an alkylaryl group and an arylalkyl group having 4 to 30 carbon atoms, and R12 to R14 may be the same or different.
The phosphoric acid ester includes a triaryl phosphate, a trialkyl phosphate, a trialkylaryl phosphate, a triarylalkyl phosphate, a trialkenyl phosphate and the like. Specific examples thereof include triphenyl phosphate, tricresyl phosphate, benzyldiphenyl phosphate, ethyldiphenyl phosphate, tributyl phosphate, ethyldibutyl phosphate, cresyldiphenyl phosphate, dicresylphenyl phosphate, ethylphenyldiphenyl phosphate, diethylphenylphenyl phosphate, propylphenyldiphenyl phosphate, dipropylphenylphenyl phosphate, triethylphenyl phosphate, tripropylphenyl phosphate, butylphenyldiphenyl phosphate, dibutylphenylphenyl phosphate, tributylphenyl phosphate, trihexyl phosphate, tri(2-ethylhexyl) phosphate, tridecyl phosphate, trilauryl phosphate, trimyristyl phosphate, tripalmityl phosphate, tristearyl phosphate, trioleyl phosphate and the like.
Specific examples of the acid phosphoric acid ester include 2-ethylhexyl acid phosphate, ethyl acid phosphate, butyl acid phosphate, oleyl acid phosphate, tetracosyl acid phosphate, isodecyl acid phosphate, lauryl acid phosphate, tridecyl acid phosphate, stearyl acid phosphate, isostearyl acid phosphate and the like.
Specific examples of the phosphorous acid ester include triethyl phosphite, tributyl phosphite, triphenyl phosphite, tricresyl phosphite, tri(nonylphenyl) phosphite, tri(2-ethylhexyl) phosphite, tridecyl phosphite, trilauryl phosphite, triisooctyl phosphite, diphenylisodecyl phosphite, tristearyl phosphite, trioleyl phosphite and the like.
Specific examples of the acid phosphorous acid ester include dibutylhydrogen phosphite, dilaurylhydrogen phosphite, dioleylhydrogen phosphite, distearylhydrogen phosphite, diphenylhydrogen phosphite and the like.
Further, the amines forming amine salts with these include a mono-substituted amine, a di-substituted amine and a tri-substituted amine represented by the general formula (XI)
R15 mNH3-m (XI)
R15 mNH3-m (XI)
-
- (wherein R15 represents an alkyl group or an alkenyl group having 3 to 30 carbon atoms, an aryl group or an arylalkyl group having 6 to 30 carbon atoms or a hydroxyalkyl group having 2 to 30 carbon atoms, m represents 1, 2 or 3, and when R15 is plural groups, plural R15's may be the same or different).
In R15 in the general formula (XI), an alkyl group or an alkenyl group having 3 to 30 carbon atoms may be linear, branched or cyclic.
- (wherein R15 represents an alkyl group or an alkenyl group having 3 to 30 carbon atoms, an aryl group or an arylalkyl group having 6 to 30 carbon atoms or a hydroxyalkyl group having 2 to 30 carbon atoms, m represents 1, 2 or 3, and when R15 is plural groups, plural R15's may be the same or different).
Here, examples of the mono-substituted amine can include butylamine, pentylamine, hexylamine, cyclohexylamine, octylamine, laurylamine, stearylamine, oleylamine, benzylamine and the like. Examples of the di-substituted amine can include dibutylamine, dipentylamine, dihexylamine, dicyclohexylamine, dioctylamine, dilaurylamine, distearylamine, dioleylamine, dibenzylamine, stearyl-monoethanolamine, decyl-monoethanolamine, hexyl-monopropanolamine, benzyl-monoethanolamine, phenyl-monoethanolamine, tolyl-monopropanol amide and the like. Examples of the tri-substituted amine include tributylamine, tripentylamine, trihexylamine, tricyclohexylamine, trioctylamine, trilaurylamine, tristearylamine, trioleylamine, tribenzylamine, dioleyl-monoethanolamine, dilauryl monopropanolamine, dioctyl-monoethanolamine, dihexyl-monopropanolamine, dibutyl-monopropanolamine, oleyl-diethanol amine, stearyl-dipropanolamine, lauryl-diethanolamine, octyl-dipropanolamine, butyl-diethanolamine, benzyl-diethanolamine, phenyl-diethanolamine, tolyl-dipropanolamine, xylyl-diethanolamine, triethanolamine, tripropanolamine and the like.
Examples of the antioxidant containing phosphorus and a halogen atom can include a chlorinated phosphoric acid ester.
Examples of the antioxidant containing sulfur and phosphorus in the molecule can include phosphorus sulfide oil, a phosphorus sulfide olefin, a thiophosphoric acid ester (thiophosphite and thiophosphate) and the like. Of these, a thiophosphite (alkylaryl type) and a thiophosphate (alkylaryl type) are preferable.
Examples of the antioxidant containing sulfur, phosphorus and a metal can include dithiophosphoric acid salts such as zinc dithiophosphate (Zn-DTP), molybdenum dithiophosphate (Mo-DTP), lead dithiophosphate, tin dithiophosphate and the like.
Among the above-described antioxidants, 2,6-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazin-2-ylamino)phenol, Zn-DTP(alkylaryl type), a thiophosphite (alkyl type) and a thiophosphate (alkylaryl type) are preferable.
Further, the above-described antioxidants can be used either singly or in combination.
The preferable mixing amount of the above antioxidant is in the range of 0.1 to 10% by weight based on the total amount of the composition. When the mixing amount is less than 0.1% by weight, the aim of the present invention is not fully exhibited. When it exceeds 10% by weight, the improvement in the effect is sometimes not observed even with this amount, and the solubility in base oil is sometimes decreased. The more preferable mixing amount is in the range of 1 to 7% by weight.
The lubricant composition for the high temperature in the present invention can contain various known additives such as a rust-proofing agent, a detergent-dispersant, a metal inactivator, a defoamer and the like as required unless the aim of the present invention is impaired.
Examples of the rust-proofing agent can include a metal sulfonate, a succinic acid ester and the like.
Examples of the detergent-dispersant can include a metal sulfonate, a metal salicylate, a metal finate, a succinic acid imide and the like.
Examples of the metal inactivator can include benzotriazole, thiadiazole and the like.
Examples of the defoamer include methyl silicone oil, fluorosilicone oil, a polyacrylate and the like.
It is advisable that the kinematic viscosity at 40° C. of the lubricant composition for the high temperature in the present invention is adjusted to 10 to 50 mm2/s in order to achieve the aim. It is more preferably in the range of 50 to 320 mm2/s.
Incidentally, the lubricant composition for the high temperature in the present invention is preferably used when the temperature exceeds 150° C. in a time of more than 50% of the use period.
Next, the present invention is illustrated more specifically with reference to Examples. However, the present invention is not limited to these Examples at all.
As shown in Table 1, base oil was mixed with an antioxidant to prepare a lubricant composition. With respect to the viscosity of the composition, the mixing was conducted by adjusting a viscosity of an α-olefin oligomer, whereby the kinematic viscosity at 40° C. was all adjusted to 220 mm2/s. Regarding the composition, a thin film residue test was conducted in the following manner. Further, a container was inclined, and the fluidity at that time was visually evaluated. The results are shown in Table 1.
Thin film residue test
The amount of the residue was measured at 200° C. for 24 hours using a container and a constant-temperature air bath indicated ina lubricant heat stability test of JIS K2540. This was expressed in terms of percentage, and defined as a residue ratio. By the way, 10 liters/hr of air was always caused to flow in during the measurement.
| TABLE 1 | |||||
| Ex. 1 | Ex. 2 | Ex. 3 | Ex. 4 | ||
| (1) |
| Mixing | α-olefin oligomer*1 | balance | balance | balance | balance |
| ratio | polybutene*2 | 20 | 20 | 20 | 20 |
| wt. % | aromatic ester 1*3 | 50 | 50 | 50 | 50 |
| aromatic ester 2*4 | — | — | — | — | |
| bisphenol*5 | 1 | 1 | 1 | 1 | |
| diphenylamine*6 | 1 | 1 | 1 | 1 | |
| dithiophosphoric acid | — | 2 | — | — | |
| salt*7 | |||||
| thiophosphoric acid | — | — | 2 | — | |
| ester*8 | |||||
| triazine-type sulfur- | — | — | — | 2 | |
| containing compound*9 |
| Residue ratio (%) | 62.5 | 70.2 | 67.3 | 76.6 |
| Fluidity (visual observation) | yes | yes | yes | yes |
| Ex. 5 | Ex. 6 | CEx. 1 | CEx. 2 | ||
| (2) |
| Mixing | α-olefin oligomer*1 | balance | balance | balance | balance |
| ratio | polybutene*2 | 20 | 20 | 20 | 20 |
| wt. % | aromatic ester 1*3 | — | — | — | — |
| aromatic ester 2*4 | 50 | 50 | — | — | |
| bisphenol*5 | 1 | 1 | 1 | 1 | |
| diphenylamine*6 | 1 | 1 | 1 | 1 | |
| dithiophosphoric acid | — | 2 | — | 2 | |
| salt*7 | |||||
| thiophosphoric acid | — | 2 | — | 2 | |
| ester*8 | |||||
| triazine-type sulfur- | 2 | — | — | — | |
| containing compound*9 |
| Residue ratio (%) | 78.1 | 84.1 | 50.6 | 55.2 |
| Fluidity (visual observation) | yes | yes | no | no |
| Ex.—Example, CEx.—Comparative Example | ||||
| (Notes) | ||||
| *1Hydrogenated substance of an oligomer, 1-decene (kinematic viscosity at 40° C. 30 to 63 mm2/s) | ||||
| *2Number average molecular weight: 2,300 | ||||
| *3tri-n-ocytl trimellitate | ||||
| *4tri-n-octyl pyromellitate | ||||
| *54,4′-methylenebis(2,6-di-tert-butylphenol) | ||||
| *64,4′dibutyldiphenylamine | ||||
| *7alkylaryl-type Zn-DTP | ||||
| *8triisononylphenol thiophosphate | ||||
| *92,6-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazin-2-ylamino)phenol | ||||
According to the present invention, a lubricant composition for a high temperature of which the amount evaporated in a thin film at a high temperature is controlled and of which the fluidity is maintained for a long period of time can be provided.
Claims (21)
1. A lubricant composition for a high temperature which is obtained by mixing a base oil composition comprising (a) 20 to 80% by weight of an aromatic ester compound represented by the following general formula (I)
( wherein R1 represents an alkyl group having 6 to 16 carbon atoms, and n represents an integer of 1 to 6) ,
and (b) 20 to 80% by weight of another base oil with (c) 0.1 to 10% by weight, based on the total amount of the lubricant composition, of an antioxidant,
wherein said another base oil includes an α-olefin oligomer, or hydrogenated products thereof, or an ethylene-α-olefin oligomer, or hydrogenated products thereof of said ethylene-α-olefin oligomer.
2. The lubricant composition for the high temperature as claimed in claim 1 , wherein the base oil composition comprises (a) 30 to 80% by weight of the aromatic ester compound and (b) 20 to 70% by weight of another base oil.
3. The lubricant composition for the high temperature as claimed in claim 1 , wherein the aromatic ester compound (a) is one selected from a trimellitic acid alkyl ester and a pyromellitic acid alkyl ester.
4. The lubricant composition for the high temperature as claimed in claim 1 , wherein said another base oil (b) also includes a polybutene or hydrogenated products thereof.
5. The lubricant composition for the high temperature as claimed in claim 1 , wherein the antioxidant (c) is one containing sulfur and/or phosphorus in a molecule.
6. The lubricant composition for the high temperature as claimed in claim 1 , wherein the antioxidant (c) is one selected from a dithiophosphoric acid salt and a thiophosphoric acid ester.
7. The lubricant composition for the high temperature as claimed in claim 1 , wherein the antioxidant (c) is 2,6-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazin-2-ylamino)phenol.
8. The lubricant composition for the high temperature as claimed in claim 1 , wherein n is 3 or 4.
9. The lubricant composition for the high temperature as claimed in claim 1 , wherein n is 3.
10. The lubricant composition for the high temperature as claimed in claim 1 , wherein n is 4.
11. A lubricant composition for a high temperature which is obtained by mixing a base oil composition comprising (a) 20 to 80 % by weight of an aromatic ester compound represented by the following general formula (I)
wherein R 1 represents an alkyl group having 6 to 16 carbon atoms, and n represents an integer of 3 to 6, and (b) 20 to 80 % by weight of another base oil with (c) 0.1 to 10 % by weight, based on the total amount of the lubricant composition, of an antioxidant,
wherein said another base oil includes an α-olefin oligomer, or hydrogenated products thereof, or an ethylene-α-olefin oligomer, or hydrogenated products thereof.
12. The lubricant composition for the high temperature as claimed in claim 11 , wherein the base oil composition comprises (a) 30 to 80 % by weight of the aromatic ester compound and (b) 20 to 70 % by weight of another base oil.
13. The lubricant composition for the high temperature as claimed in claim 11 , wherein the aromatic ester compound (a) is one selected from a trimellitic acid alkyl ester and a pyromellitic acid alkyl ester.
14. The lubricant composition for the high temperature as claimed in claim 11 , wherein said another base oil (b) also includes a polybutene or hydrogenated products thereof.
15. The lubricant composition for the high temperature as claimed in claim 11 , wherein the antioxidant (c) is one containing sulfur and/or phosphorus in a molecule.
16. The lubricant composition for the high temperature as claimed in claim 11 , wherein the antioxidant (c) is one selected from a dithiophosphoric acid salt and a thiophosphoric acid ester.
17. The lubricant composition for the high temperature as claimed in claim 11 , wherein the antioxidant (c) is 2,6 -di-tert-butyl- 4 -( 4,6 -bis(octylthio)- 1,3,5 -triazin- 2 -ylamino)phenol.
18. The lubricant composition for the high temperature as claimed in claim 11 , wherein n is 3 or 4.
19. The lubricant composition for the high temperature as claimed in claim 11 , wherein n is 3.
20. The lubricant composition for the high temperature as claimed in claim 11 , wherein n is 4.
21. A lubricant composition for a high temperature which is obtained by mixing a base oil composition comprising (a) 20 to 80 % by weight of an aromatic ester compound represented by the following general formula (I)
wherein R 1 represents an alkyl group having 6 to 16 carbon atoms, and n represents an integer of 1 to 6, and (b) 20 to 80 % by weight of another base oil with (c) 0.1 to 10 % by weight, based on the total amount of the lubricant composition, of a zinc dithiophosphoric acid salt antioxidant,
wherein said another base oil includes an α-olefin oligomer, or hydrogenated products thereof, or an ethylene-α-olefin oligomer, or hydrogenated products thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37048198A JP4049916B2 (en) | 1998-12-25 | 1998-12-25 | High temperature lubricating oil composition |
| PCT/JP1999/007202 WO2000039256A1 (en) | 1998-12-25 | 1999-12-22 | Lubricating oil composition for high-temperature use |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US09/857,199 Reissue US6465400B1 (en) | 1998-12-25 | 1999-12-22 | Lubricating oil composition for high-temperature use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| USRE39382E1 true USRE39382E1 (en) | 2006-11-07 |
Family
ID=18497023
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US09/857,199 Ceased US6465400B1 (en) | 1998-12-25 | 1999-12-22 | Lubricating oil composition for high-temperature use |
| US10/703,025 Expired - Lifetime USRE39382E1 (en) | 1998-12-25 | 1999-12-22 | Lubricating oil composition for high-temperature use |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US09/857,199 Ceased US6465400B1 (en) | 1998-12-25 | 1999-12-22 | Lubricating oil composition for high-temperature use |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US6465400B1 (en) |
| EP (1) | EP1154011B1 (en) |
| JP (1) | JP4049916B2 (en) |
| KR (1) | KR100637961B1 (en) |
| CN (1) | CN1179024C (en) |
| DE (1) | DE69927293T2 (en) |
| TW (1) | TW531559B (en) |
| WO (1) | WO2000039256A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130012417A1 (en) * | 2010-03-19 | 2013-01-10 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition for high-temperature applications |
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| DE102011102540B4 (en) | 2011-05-26 | 2013-12-12 | KLüBER LUBRICATION MüNCHEN KG | High temperature oil |
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| EP2975103A4 (en) * | 2013-03-14 | 2016-11-16 | Idemitsu Kosan Co | High-temperature lubricant composition |
| US20160122678A1 (en) * | 2013-05-30 | 2016-05-05 | The Lubrizol Corporation | Vibration resistant industrial gear oils |
| CN105441164B (en) * | 2014-07-25 | 2019-03-08 | 克鲁勃润滑产品（上海）有限公司 | Chain lubricating oil and preparation method thereof |
| JP5898287B2 (en) * | 2014-09-25 | 2016-04-06 | 出光興産株式会社 | High temperature lubricating oil composition |
| DE102014018719A1 (en) * | 2014-12-17 | 2016-06-23 | Klüber Lubrication München Se & Co. Kg | High temperature lubricant for the food industry |
| DE102014018718A1 (en) * | 2014-12-17 | 2016-06-23 | Klüber Lubrication München Se & Co. Kg | High temperature lubricants |
| JP6822635B2 (en) * | 2016-03-25 | 2021-01-27 | 出光興産株式会社 | Lubricating oil composition and how to use the lubricating oil composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20130012417A1 (en) * | 2010-03-19 | 2013-01-10 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition for high-temperature applications |
| US9068136B2 (en) * | 2010-03-19 | 2015-06-30 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition for high-temperature applications |
Also Published As
| Publication number | Publication date |
|---|---|
| TW531559B (en) | 2003-05-11 |
| KR20010110411A (en) | 2001-12-13 |
| DE69927293D1 (en) | 2005-10-20 |
| CN1179024C (en) | 2004-12-08 |
| EP1154011A9 (en) | 2002-05-15 |
| KR100637961B1 (en) | 2006-10-23 |
| EP1154011A1 (en) | 2001-11-14 |
| CN1332784A (en) | 2002-01-23 |
| JP2000192071A (en) | 2000-07-11 |
| US6465400B1 (en) | 2002-10-15 |
| DE69927293T2 (en) | 2006-01-19 |
| JP4049916B2 (en) | 2008-02-20 |
| WO2000039256A1 (en) | 2000-07-06 |
| EP1154011B1 (en) | 2005-09-14 |
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