EP3119860A1 - Lubricants containing blends of polymers - Google Patents
Lubricants containing blends of polymersInfo
- Publication number
- EP3119860A1 EP3119860A1 EP15708085.4A EP15708085A EP3119860A1 EP 3119860 A1 EP3119860 A1 EP 3119860A1 EP 15708085 A EP15708085 A EP 15708085A EP 3119860 A1 EP3119860 A1 EP 3119860A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arms
- lubricant composition
- weight
- meth
- acrylate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229920000642 polymer Polymers 0.000 title claims abstract description 149
- 239000000203 mixture Substances 0.000 title claims abstract description 105
- 239000000314 lubricant Substances 0.000 title claims abstract description 97
- 239000000178 monomer Substances 0.000 claims abstract description 74
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 47
- 239000005977 Ethylene Substances 0.000 claims abstract description 25
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims abstract description 24
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000001050 lubricating effect Effects 0.000 claims abstract description 21
- 229920001038 ethylene copolymer Polymers 0.000 claims abstract description 13
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 9
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 9
- -1 alkylene glycol dimethacrylate Chemical compound 0.000 claims description 85
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 56
- 125000000217 alkyl group Chemical group 0.000 claims description 54
- 239000003921 oil Substances 0.000 claims description 47
- 239000002270 dispersing agent Substances 0.000 claims description 32
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 32
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 24
- 239000003599 detergent Substances 0.000 claims description 18
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 18
- 239000003963 antioxidant agent Substances 0.000 claims description 17
- 150000003839 salts Chemical class 0.000 claims description 17
- 229910052698 phosphorus Inorganic materials 0.000 claims description 14
- 239000011574 phosphorus Substances 0.000 claims description 14
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 13
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 12
- 239000000654 additive Substances 0.000 claims description 11
- 239000003112 inhibitor Substances 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 150000001336 alkenes Chemical class 0.000 claims description 9
- CERQOIWHTDAKMF-UHFFFAOYSA-M methacrylate group Chemical group C(C(=C)C)(=O)[O-] CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 8
- 239000003607 modifier Substances 0.000 claims description 8
- 230000003078 antioxidant effect Effects 0.000 claims description 7
- 239000002518 antifoaming agent Substances 0.000 claims description 6
- 239000006078 metal deactivator Substances 0.000 claims description 6
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 150000001993 dienes Chemical class 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 230000000994 depressogenic effect Effects 0.000 claims description 3
- 230000000051 modifying effect Effects 0.000 claims description 3
- 229920005604 random copolymer Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 125000005250 alkyl acrylate group Chemical group 0.000 claims description 2
- 229920001400 block copolymer Polymers 0.000 claims description 2
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 2
- 102100024133 Coiled-coil domain-containing protein 50 Human genes 0.000 claims 1
- 101000910772 Homo sapiens Coiled-coil domain-containing protein 50 Proteins 0.000 claims 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims 1
- 230000003068 static effect Effects 0.000 claims 1
- 229920001577 copolymer Polymers 0.000 abstract description 36
- 239000000463 material Substances 0.000 description 31
- 150000001412 amines Chemical class 0.000 description 16
- 239000012530 fluid Substances 0.000 description 15
- 150000002148 esters Chemical class 0.000 description 14
- 238000009472 formulation Methods 0.000 description 14
- 239000004034 viscosity adjusting agent Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 12
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 11
- 150000001298 alcohols Chemical class 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 11
- 229920000768 polyamine Polymers 0.000 description 11
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- 230000002378 acidificating effect Effects 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 9
- 239000007822 coupling agent Substances 0.000 description 9
- 239000003085 diluting agent Substances 0.000 description 9
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- 125000005907 alkyl ester group Chemical group 0.000 description 8
- 239000003446 ligand Substances 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- 239000011701 zinc Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 239000012141 concentrate Substances 0.000 description 7
- 229910052736 halogen Inorganic materials 0.000 description 7
- 150000002367 halogens Chemical class 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 7
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 6
- DMBHHRLKUKUOEG-UHFFFAOYSA-N N-phenyl aniline Natural products C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 6
- 125000002947 alkylene group Chemical group 0.000 description 6
- 150000001408 amides Chemical class 0.000 description 6
- 238000010560 atom transfer radical polymerization reaction Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 6
- 150000003949 imides Chemical group 0.000 description 6
- 239000011572 manganese Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 241000894007 species Species 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 5
- 229920002367 Polyisobutene Polymers 0.000 description 5
- 239000002199 base oil Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 150000001735 carboxylic acids Chemical class 0.000 description 5
- 239000007859 condensation product Substances 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- 239000000194 fatty acid Substances 0.000 description 5
- 150000004665 fatty acids Chemical class 0.000 description 5
- 125000000524 functional group Chemical group 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 229920000058 polyacrylate Polymers 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 229920000098 polyolefin Polymers 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 150000003254 radicals Chemical class 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical class ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 4
- 150000008064 anhydrides Chemical class 0.000 description 4
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 4
- 125000004429 atom Chemical group 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 230000001404 mediated effect Effects 0.000 description 4
- 239000005078 molybdenum compound Substances 0.000 description 4
- 239000010705 motor oil Substances 0.000 description 4
- 150000002924 oxiranes Chemical class 0.000 description 4
- 229920000193 polymethacrylate Polymers 0.000 description 4
- 229920005862 polyol Polymers 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 229910052723 transition metal Inorganic materials 0.000 description 4
- 150000003624 transition metals Chemical class 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 3
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 239000012986 chain transfer agent Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000006482 condensation reaction Methods 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 229940035422 diphenylamine Drugs 0.000 description 3
- 150000004659 dithiocarbamates Chemical class 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000003502 gasoline Substances 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 150000002752 molybdenum compounds Chemical class 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 238000012705 nitroxide-mediated radical polymerization Methods 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- 239000002530 phenolic antioxidant Substances 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 150000003077 polyols Chemical class 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 125000001424 substituent group Chemical group 0.000 description 3
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 238000005809 transesterification reaction Methods 0.000 description 3
- 239000012989 trithiocarbonate Substances 0.000 description 3
- MYWOJODOMFBVCB-UHFFFAOYSA-N 1,2,6-trimethylphenanthrene Chemical compound CC1=CC=C2C3=CC(C)=CC=C3C=CC2=C1C MYWOJODOMFBVCB-UHFFFAOYSA-N 0.000 description 2
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical group C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- MZCDRTWTVJYHQN-UHFFFAOYSA-N 2-(2-decyltetradecoxy)ethyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCC(COCCOC(=O)C(C)=C)CCCCCCCCCC MZCDRTWTVJYHQN-UHFFFAOYSA-N 0.000 description 2
- LEJBBGNFPAFPKQ-UHFFFAOYSA-N 2-(2-prop-2-enoyloxyethoxy)ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOC(=O)C=C LEJBBGNFPAFPKQ-UHFFFAOYSA-N 0.000 description 2
- XFCMNSHQOZQILR-UHFFFAOYSA-N 2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOC(=O)C(C)=C XFCMNSHQOZQILR-UHFFFAOYSA-N 0.000 description 2
- INQDDHNZXOAFFD-UHFFFAOYSA-N 2-[2-(2-prop-2-enoyloxyethoxy)ethoxy]ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOCCOC(=O)C=C INQDDHNZXOAFFD-UHFFFAOYSA-N 0.000 description 2
- TXTFQNBIGUTDSM-UHFFFAOYSA-N 2-decyltetradecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCC(COC(=O)C(C)=C)CCCCCCCCCC TXTFQNBIGUTDSM-UHFFFAOYSA-N 0.000 description 2
- IZTZOTCMIVLHCZ-UHFFFAOYSA-N 2-dodecylhexadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCC(COC(=O)C(C)=C)CCCCCCCCCCCC IZTZOTCMIVLHCZ-UHFFFAOYSA-N 0.000 description 2
- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 description 2
- KOBJYYDWSKDEGY-UHFFFAOYSA-N 2-phenylpropan-2-yl benzenecarbodithioate Chemical compound C=1C=CC=CC=1C(C)(C)SC(=S)C1=CC=CC=C1 KOBJYYDWSKDEGY-UHFFFAOYSA-N 0.000 description 2
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 2
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 description 2
- YYROPELSRYBVMQ-UHFFFAOYSA-N 4-toluenesulfonyl chloride Chemical compound CC1=CC=C(S(Cl)(=O)=O)C=C1 YYROPELSRYBVMQ-UHFFFAOYSA-N 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 206010034962 Photopsia Diseases 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 description 2
- 125000003158 alcohol group Chemical group 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 230000002902 bimodal effect Effects 0.000 description 2
- DIKBFYAXUHHXCS-UHFFFAOYSA-N bromoform Chemical compound BrC(Br)Br DIKBFYAXUHHXCS-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 125000004985 dialkyl amino alkyl group Chemical group 0.000 description 2
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000012990 dithiocarbamate Substances 0.000 description 2
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 2
- 239000013020 final formulation Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 150000002462 imidazolines Chemical class 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methyl-cyclopentane Natural products CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910017464 nitrogen compound Inorganic materials 0.000 description 2
- 150000002830 nitrogen compounds Chemical class 0.000 description 2
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([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])[H] 0.000 description 2
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- 239000010723 turbine oil Substances 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([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])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000000196 viscometry Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
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
- C10M157/00—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
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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
- C10M157/00—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
- C10M157/04—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential at least one of them being a nitrogen-containing compound
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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
- 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
- C10M2205/024—Propene
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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
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/026—Butene
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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
- C10M2205/02—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
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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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
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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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
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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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- 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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/04—Molecular weight; Molecular weight distribution
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/073—Star shaped polymers
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- 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
- C10N2030/02—Pour-point; Viscosity index
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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
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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
- C10N2030/06—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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/68—Shear stability
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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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
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- 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
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
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- 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
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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
- C10N2040/255—Gasoline engines
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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
- C10N2070/00—Specific manufacturing methods for lubricant compositions
Definitions
- the disclosed technology relates to lubricant formulations containing a mixture of viscosity modifying polymers: a (meth)acrylate-containing polymer comprising a multiplicity of arms, and an ethylene/olefin copolymer comprising polymerized propylene monomers.
- Viscosity modifiers including star polymers and other polymers with multiplicity of arms are known in the field of lubricants for providing viscosity index performance, low temperature performance as described by Brookfield viscosity and higher temperature performance as indicated by kinematic viscosity performance at 40°C and 100°C.
- the viscosity modifier's performance has been observed in a wide variety of mechanical devices including hydraulic systems, driveline systems, and internal combustion engines.
- Olefin copolymers are also known as viscosity modifi- ers.
- lubricants as described herein may exhibit one or more of good shear stability under operating conditions characteristic of a motorcycle gearbox, good gear protection, and good deposit performance.
- EP 2 610 332, Lubrizol, July 3, 2013, discloses star polymers and lubricating compositions thereof.
- the star polymer has at least two inner blocks, at least one of which is in turn bonded to one or more outer blocks.
- the lubricant composition may further comprise a viscosity modifier (typically an olefin copolymer such as an ethylene-propylene copolymer).
- a viscosity modifier typically an olefin copolymer such as an ethylene-propylene copolymer.
- U.S. Patent 8,513,176, Baum et al., August 20, 2013, discloses a process for preparing a polymer, involving a chain transfer agent containing a thiocarbonyl compound.
- the product may be a star polymer which may be a block-arm star polymer or a hetero-arm star polymer.
- other performance additives may be present in a lubricant, including viscosity modifiers.
- U.S. Application 2010/0190671 Stoehr et al, July 29, 2010, discloses use of comb polymers for reducing fuel consumption. Also disclosed is a lubricant oil formulation comprising the comb polymer which contains in the main chain at least one repeat unit obtained from a polyolefin-based macromonomer. It may also contain an additional additive, which may be, among others, a viscosity index improver.
- Conventional viscosity index improvers may include olefin copolymers, especially of the poly(ethylene-co-propylene) type.
- U.S. Application 2008/0015131 discloses lubricants containing an olefin copolymer and an acrylate copolymer.
- a disclosed polymer is an ethylene aliphatic olefin copolymer wherein the aliphatic olefin contains from 3 to about 24 carbon atoms, the copolymer having M n ranging from about 600 to about 5000.
- the ethylene content may be about 20 mole % to about 85 mole %.
- the copolymer is an ethylene-propylene copolymer.
- the lubricant compositions are said to exhibit good low temperature and shear stability performance.
- the lubricants include automatic transmission, manual transmission, and gear lubricants.
- U.S. Application 2003-0036488, Yuki et al., February 20, 2003 discloses a viscosity index improver and lubricant oil containing the same.
- the viscosity index improver may include such monomers as 2-decyl-tetradecyl methacrylate, 2-dodecyl- hexadecyl methacrylate, or 2-decyl-tetradecyloxyethyl methacrylate.
- the disclosed technology therefore, provides lubricants that may have one or more of various beneficial properties, such as reduced vane and ring wear in a hydraulic fluid formulation, and good viscosity properties such as viscosity index in an engine or motorcycle lubricant.
- the disclosed technology provides a lubricant composition
- a lubricant composition comprising: (a) an oil of lubricating viscosity; (b) a (meth)acrylate-containing polymer compris- ing a multiplicity of arms, wherein the arms contain at least 20, or at least 50 or 100 or 200 or 350 or 500 or 1000, carbon atoms, said arms being attached to a multivalent organic moiety; and (c) an ethylene/olefin copolymer having a weight average molecular weight of 5,000 to 250,000 or 10,000 to about 250,000, wherein the copolymer comprises about 40 to about 70 weight percent polymerized ethylene monomers and further comprises one or more polymerized olefin monomers of 3 to 6 carbon atoms (such as a-olefms).
- the disclosed technology further provides a method for lubricating a mechanical device comprising supplying thereto the foregoing lubricant composition.
- oils include natural and synthetic oils, oil derived from hydrocrack- ing, hydrogenation, and hydrofinishing, unrefined, refined, re-refined oils or mixtures thereof.
- natural and synthetic oils oil derived from hydrocrack- ing, hydrogenation, and hydrofinishing, unrefined, refined, re-refined oils or mixtures thereof.
- a more detailed description of unrefined, refined, and re-refined oils is provided in International Publication WO2008/147704, paragraphs [0054] to [0056] .
- a more detailed description of natural and synthetic lubricating oils is described in paragraphs [0058] to [0059] respectively of WO2008/147704.
- Synthetic oils may also be produced by Fischer-Tropsch reactions and typically may be hydroisomerized Fischer-Tropsch hydrocarbons or waxes.
- oils may be prepared by a Fischer-Tropsch gas-to-liquid synthetic procedure as well as other gas-to-liquid oils.
- Oils of lubricating viscosity may also be defined as specified in April 2008 version of "Appendix E - API Base Oil Interchangeability Guidelines for Passenger Car Motor Oils and Diesel Engine Oils", section 1.3 Sub-heading 1.3. "Base Stock Categories.”
- the oil of lubricating viscosity may also be an ester.
- a summary of the API oil classifications is as follows: Base Oil Category Sulfur (%) Saturates(%) Viscosity Index
- Group I >0.03 and/or ⁇ 90 80 to 120
- PAOs polyalphaolefms
- Groups I, II and III are mineral oil base stocks.
- the oil of lubricating viscosity may be an API Group I oil. In other embodiment, it may be a Group II or Group III oil, or any one of groups I through V.
- the amount of the oil of lubricating viscosity present is typically the balance remaining after subtracting from 100 wt. % the sum of the amount of the compound of the disclosed technology and the other performance additives.
- the lubricating composition may be in the form of a concentrate and/or a fully formulated lubricant. If the star polymer of the disclosed technology is in the form of a concentrate (which may be combined with additional oil to form, in whole or in part, a finished lubricant), the ratio of the of components the star polymer of the disclosed technology to the oil of lubricating viscosity and/or to diluent oil include the ranges of 1 :99 to 99: 1 by weight, or 80:20 to 10:90 by weight.
- the disclosed lubricant will also contain a (meth)acrylate-containing polymer comprising a multiplicity of arms containing at least about 20, or at least 50 or 100 or 200 or 350 or 500 or 1000, carbon atoms, said arms being attached to a multivalent organic moiety.
- a (meth)acrylate-containing polymer comprising a multiplicity of arms containing at least about 20, or at least 50 or 100 or 200 or 350 or 500 or 1000, carbon atoms, said arms being attached to a multivalent organic moiety.
- the term (meth)acrylate and its cognates means either methacrylate or acrylate, as will be readily understood.
- the multi-armed polymer may thus be characteristic of a "star" polymer, a "comb” polymer, or a polymer otherwise having multiple arms or branches as described herein.
- Star polymers are known. They may be prepared by a number of routes, including atom transfer radical polymerization (ATRP), reversible addition- fragmentation chain transfer (RAFT) polymerization, nitroxide mediated polymerization, or anionic polymerization.
- ATRP atom transfer radical polymerization
- RAFT reversible addition- fragmentation chain transfer
- nitroxide mediated polymerization or anionic polymerization.
- a detailed discussion of ATRP is given in Chapter 1 1 , pages 523 to 628 of the Handbook of Radical Polymerization, Edited by Krzyszt- of Matyjaszewski and Thomas P. Davis, John Wiley and Sons, Inc., 2002 (hereinafter referred to as "Matyjaszewski"). See in particular reaction scheme 1 1.1 on page 524, 1 1.4 on page 556, 1 1.7 on page 571 , 1 1.8 on page 572, and 1 1.9 on page 575.
- ATRP may be used to prepare a star polymer having as a core portion a functional group of formula (I):
- R is hydrogen or a linear or branched alkyl group containing 1 to 5 carbon atoms
- A is an amino or alkoxy group connected through the nitrogen or oxygen atom thereof to the remainder of the structure (I); and
- Y is a halogen such as bromine, chlorine, fluorine, or iodine.
- the halogen may be derived from a suitable halogen- containing compound such as an initiator, including those that contain one or more atoms or groups of atoms which may be transferred by a radical mechanism under the polymerization conditions.
- the structure of (I) may be drawn in more detail as structure (Iz
- Z is a polymeric group such as a crosslinked polymeric group. More detail on ATRP processes is given in US patent 6,391 ,996 and U.S. Application
- halogen containing compound examples include benzyl halides, such as p-chloromethylstyrene, a-dichloroxylene, ⁇ , ⁇ -dichloroxylene, a,a-dibromoxylene and hexakis(a-bromomethyl)benzene, benzyl chloride, benzyl bromide, 1-bromo-l- phenyl ethane and 1 -chloro-l -phenyl ethane; carboxylic acid derivatives which are halogenated at the a-position, such as propyl 2-bromopropionate, methyl 2-chloro- propionate, ethyl 2-chloropropionate, methyl 2-bromopropionate, ethyl 2-bromo- isobutyrate; tosyl halides such as p-toluenesulfonyl chloride; alkyl halides such as te
- a transition metal such as copper may also be present.
- the transition metal may be in the form of a salt.
- the transition metal is capable of forming a metal to ligand bond and the ratio of ligand to metal depends on the dentate number of the ligand and the coordination number of the metal.
- the ligand is a nitrogen or phosphorus containing ligand.
- the ligand is phosphorus-containing with triphenyl phosphene (PPI1 3 ) a common ligand.
- a suitable transition metal for a triphenyl phosphene ligand includes Rh, Ru, Fe, Re, Ni or Pd.
- the Y functionality may be derived from or be a portion of a chain transfer agent.
- the core portion comprises a functional group (often from a chain transfer agent) derived from a compound comprising a thiocarbonyl thio group and a free radical leaving groups, such as those disclosed in paragraph 0146 of U.S. Application 2007/0244018.
- RAFT chain transfer agents include benzyl l-(2- pyrrolidinone)carbodithioate, benzyl (l ,2-benzenedicarboximido)carbodithioate, 2- cyanoprop-2-yl 1-pyrrolecarbodithioate, 2-cyanobut-2-yl 1-pyrrolecarbodithioate, benzyl 1 -imidazolecarbodithioate, N,N-dimethyl-S-(2-cyanoprop-2- yl)dithiocarbamate, N,N-diethyl-S-benzyl dithiocarbamate, cyanomethyl l-(2- pyrrolidone)carbodithoate, cumyl dithiobenzoate, ⁇ , ⁇ -diethyl S-(2-ethoxy- carbonylprop-2-yl)dithiocarbamate, 0-ethyl-S-(l -phenyl ethy
- RAFT polymerization is also described in greater detail in Chapter 12, pages 629 to 690 of Matyjaszewski, especially pages 664 to 665.
- the core portion of a polymer may comprise a functional group of formula (I) above, wherein Y is an alkyl nitroxide group, -0-N(R 6 )(R 7 ) where R 6 and R 7 may be alkyl groups of 1 to 8 carbon atoms or wherein R 6 and R 7 may be joined together to form a ring.
- nitroxide-mediated techniques when nitroxide- mediated techniques are employed, in some instances a portion of styrene may be desirable (for instance, the amount of (meth)acrylate may be less than 50 wt % of the star polymer) to allow for a satisfactory polymer to be prepared using TEMPO based derivatives, for the reasons stated in Matyjaszewski, page 477, section 10.4.
- TEMPO based nitroxide mediated techniques are employed using an alicyclic nitroxide or nonquaternary nitroxide, the presence of styrene is not essential.
- a list of compounds suitable for nitroxide-mediated techniques is given in Table 10.1 , pages 479-481 of Matyjaszewski. Nitroxide-mediated polymerization is also described in paragraphs 016-to 0163 of U.S. Application 2007/0244018.
- the amount of the compound employed to impart halogen, nitroxide group, or dithioether functionality into the core portion in one embodiment is 0.001 to 0.10 moles per mole of monomer, in another embodiment 0.001 to 0.05 moles per mole of monomer, and in yet another embodiment 0.001 to 0.03 moles per mole of monomer in the arms of the polymer.
- the polymer may comprise (i) a core portion comprising a polyvalent (meth) acrylic monomer, oligomer or polymer thereof or a polyvalent divinyl non-acrylic monomer, oligomer or polymer thereof; and (ii) at least two arms of polymerized alkyl (meth)acrylate ester.
- the core portion will further comprise a functional group of formu
- E is independently another part of the core, a polymeric arm or to a mono- meric species, or another structural unit as defined by formula (la);
- R 1 is hydrogen or a linear or branched alkyl group containing 1 to 5 carbon atoms;
- A is nitrogen or oxygen; and
- Y is a free radical leaving group selected from the group consisting of one or more atoms or groups of atoms which may be transferred by a radical mechanism under the polymerization conditions, a halogen, a nitroxide group,, or a dithio ester group.
- the bond shown at the left of structure (la) may typically be attached to a Z group, where Z is a polymeric group such as a crosslinked polymeric group.
- the arms of the star polymer will themselves be (meth)acrylate-containing polymer or oligomer moieties, comprising (meth)acrylic moieties condensed with alcohol moieties to provide alkyl groups.
- the arms of the star polymer may be formed from alkyl (meth)acrylate esters containing up to 40 carbon atoms in the alkyl group, or up to 30 carbon atoms, or 1 to 18 carbon atoms, or 1 to 15 carbon atoms, or 8 to 15, or 10 to 15, or 12 to 15 carbon atoms.
- one or more of the arms comprises units derived from alkyl acrylate mono- mers.
- the (meth)acrylate ester contains 98% to 100% of the alkyl groups in the polymerized alkyl (meth)acrylate ester arms which contain 1 to 18 or 1 to 15 carbon atoms; and 0% to 2% of alkyl groups in the polymerized alkyl (meth)acrylate ester arms which contain 19 to 30 or 16 to 30 carbon atoms.
- the polymeric arms comprise an alkyl ester group containing 10 to 15 carbon atoms present in at least 50 % to 100% of the alkyl groups; an alkyl ester group containing 6 to 9 carbon atoms present at 0 % to 20 %, 30 % or 40 % of the alkyl groups; an alkyl ester group containing 1 to 5 carbon atoms present at 0 % to 18 % or 20 % or 30 % of the alkyl groups; an alkyl ester group containing 16 to 30 (or 16 to 18) carbon atoms present at 0 % to 2 % of the alkyl groups; and a nitrogen containing monomer present at 0 wt % to 10 wt % of the polymeric arms.
- the polymeric arms comprise an alkyl ester group containing 10 to 18 carbon atoms present in at least 50 % to 100% of the alkyl groups; an alkyl ester alkyl group containing 6 to 9 carbon atoms present at 0 % to 20 %, 30 % or 40 % of the alkyl groups; an alkyl ester alkyl group containing 1 to 5 carbon atoms present at 0 % to 18 % or 20 % or 30 % of the alkyl groups; an alkyl ester group containing 19 to 30 carbon atoms present at 0 % to 2 % of the alkyl groups; and a nitrogen containing monomer present at 0 wt % to 10 wt % of the polymeric arms.
- the amount of the ester alkyl group containing 10 to 15 carbon atoms present on the star polymer in one embodiment may be at least 50 % of the alkyl groups, in another embodiment at least 60 % of the alkyl groups, in another embodiment at least 70 % of the alkyl groups and in another embodiment at least 80 % of the alkyl groups. In one embodiment the amount of the ester alkyl group containing 10 to 15 carbon atoms may be at least 95 % or 98 %.
- the amount of an ester alkyl group containing 6 to 9 carbon atoms present on the star polymer in one embodiment is from 0 % to 15 % or 20 % or 30 % of the alkyl groups, in another embodiment 0 % to 10 % of the alkyl groups and in another embodiment 0 % to 5 % of the alkyl groups.
- the amount of an ester alkyl group containing 1 to 5 carbon atoms present on the star polymer in one embodiment is from 0 % to 13 % or 20 % or 30 % of the alkyl groups, in another embodiment 0 % to 8 % of the alkyl groups and in another embodiment 0 % to 3 % of the alkyl groups.
- the amount of an ester alkyl group containing 16 to 30 carbon atoms present on the star polymer in one embodiment is from 0 % to 1 % of the alkyl groups and in another embodiment 0 % of the alkyl groups.
- alkyl portion of a (meth)acrylate ester examples include those derived from saturated alcohols, such as methyl methacrylate, butyl methacrylate, 2- ethylhexyl (meth)acrylate, octyl (meth)acrylate, nonyl (meth)acrylate, isooctyl (meth)acrylate, isononyl (meth)acrylate, 2-tert-butylheptyl (meth)acrylate, 3 iso- propylheptyl (meth)acrylate, decyl (meth)acrylate, undecyl (meth)acrylate, 5 methylundecyl (meth)acrylate, dodecyl(meth)acrylate, 2 methyl- dodecyl(meth)acrylate, tridecyl (meth)acrylate, 5- methyltridecyl (meth)acrylate, tetradecyl (meth)acrylate
- (meth)acrylate eicosyl (meth)acrylate, cetyleicosyl (meth)acrylate, stearyleicosyl (meth)acrylate, docosyl (meth)acrylate and/or eicosyltetratriacontyl (meth)acrylate; (meth)acrylates derived from unsaturated alcohols, such as oleyl (meth)acrylate; and cycloalkyl (meth)acrylates, such as 3 vinyl-2-butylcyclohexyl (meth)acrylate or bornyl (meth)acrylate.
- the alkyl portion of the ester may be derived from a ⁇ -branched alcohol having up to 30 carbon atoms.
- the ester compounds with long-chain alcohol-derived groups may be obtained, for example, by reaction of a (meth)acrylic acid (by direct esterification) or methyl methacrylate (by transesterification) with long-chain fatty alcohols, in which reaction a mixture of esters such as (meth)acrylate with alcohol groups of various chain lengths is generally obtained.
- the star polymer is further functionalized in the core or the polymeric arms with a nitrogen containing monomer.
- the nitrogen containing monomer may include a vinyl substituted nitrogen heterocyclic monomer, a dialkyl- aminealkyl (meth)acrylate monomer, a dialkylaminoalkyl (meth)acrylamide monomer, a tertiary-(meth)acrylamide monomer, or mixtures thereof.
- the core or polymeric arms may comprise a
- each R is independently hydrogen or hydrocarbyl group con- taining 1 to 2 carbon atoms and, in one embodiment, each R is hydrogen; and g is an integer from 1 to 6 and, in one embodiment, g is 1 to 3.
- Examples of a suitable nitrogen containing monomer include vinyl pyridine, N-vinyl imidazole, N-vinyl pyrrolidinone, and N-vinyl caprolactam, dimethyl- aminoethyl acrylate, dimethylaminoethyl methacrylate, dimethylaminobutyl acrylamide, dimethylaminopropyl methacrylate, dimethylaminopropyl acrylamide, dime- thylaminopropyl ethacrylamide, dimethylaminoethyl acrylamide or mixtures thereof.
- the polymer is reacted by copolymerization or grafting onto or into the arms or core with an acylating agent and an amine to form a disper- sant viscosity modifier (often referred to as a DVM), thus named because such materials exhibit both dispersant and viscosity modifying properties.
- a DVM disper- sant viscosity modifier
- the polymeric arms or core are functionalized by copolymerization or grafting, onto or into the arms or core, with an acylating agent, an amine, or mixtures thereof.
- a grafting acylating agent examples include an unsaturated carboxylic acid or anhydride or derivatives thereof such as maleic anhydride, (meth) acrylic acid, or itaconic acid, which may then, be reacted with a nitrogen compound such as an amine.
- the acylating agent is a dicarboxylic acid or anhydride.
- a dicarboxylic acid or anhydride thereof examples include itaconic anhydride, maleic anhydride, methyl maleic anhydride, ethyl maleic anhydride, dimethyl maleic anhydride, or mixtures thereof.
- the polymer, b is further reacted with an amine to form a condensed species such as an amide group, a species with dispersant properties.
- an amine include an amino hydrocarbyl substituted amine, such as 4-aminodiphenylamine, a hydrocarbyl substituted morpholine, such as 4 (3 -amino- propyl) morpholine or 4 -(2 -amino ethyl) morpholine or a dialkyl amino alkyl (meth)- acrylate such as a dimethyl amino alkyl (meth)acrylate or N-vinyl pyrrolidinone.
- an amino hydrocarbyl substituted amine such as 4-aminodiphenylamine
- a hydrocarbyl substituted morpholine such as 4 (3 -amino- propyl) morpholine or 4 -(2 -amino ethyl) morpholine
- the alkyl group of dimethyl amino alkyl (meth)acrylate is propyl and in another embodiment ethyl.
- the amine compound may comprise an imidazolidinone, cyclic carbamate, or pyrroldininone represented by the structure
- Hy is a hydrocarbyl ene group such as alkyl ene, or CI -4 alkylene or C2 al- kylene
- Hy' and Hy" are each independently hydrogen or hydrocarbyl groups such as alkyl or CI -4 alkyl or C2 alkyl
- Q is >NH, >NR, >CH 2 , >CHR, >CR 2 , or -0-, where R is CI -4 alkyl and " > " represents two bonds.
- Q may be >NH or >NR.
- the amine compound may be an imidazolinone which may include l-(2-amino-ethyl)-imidazolidin-2-one (may also be called ami- noethyl ethyl eneurea), l-(3-amino-propyl)-imidazolidin-2-one, l-(2-hydroxy-ethyl)- imidazolidin-2-one, l-(3-amino-propyl)-pyrrolidin-2-one, l-(3-amino-ethyl)- pyrrolidin-2-one, or mixtures thereof.
- imidazolinone which may include l-(2-amino-ethyl)-imidazolidin-2-one (may also be called ami- noethyl ethyl eneurea), l-(3-amino-propyl)-imidazolidin-2-one, l-(2-hydroxy-ethy
- the polymeric arms of the star polymer have a polydis- persity of 2 or less, in another embodiment 1.7 or less, in another embodiment 1.5 or less, for instance, 1 to 1.4.
- the star polymer has polydispersity with a bimodal or higher modal distribution. The bimodal or higher distribution is believed to be partially due to the presence of varying amounts of uncoupled polymer chains and/or uncoupled star-polymers or star-to-star coupling formed as the polymer is prepared.
- the star polymer has at least 3 arms, in another embodiment greater than 5 arms, in another embodiment greater than 7 arms, in another embodiment greater than 10 arms, for instance 12 to 100, 14 to 50, or 16 to 40 arms. In one embodiment the star polymer has 120 arms or less, in another embodiment 80 arms or less, in another embodiment 60 arms or less. In certain embodiments there may be 3 to 20, 5 to 20, or 6 to 15, or 7 to 8 arms per star.
- the star polymer moiety when formed may have uncoupled polymeric arms present (also referred to as a polymer chain or linear polymer).
- the percentage conversion of a polymer chain to star polymer in one embodiment is at least 10 %, in another embodiment at least 20 %, in another embodiment at least 40 % and in another embodiment at least 55 %, for instance 70 %, 75 % or 80%. In one embodiment the conversion of polymer chain to star polymer is about 90 %, 95 %, or 100%. In one embodiment a portion of the polymer chains does not form a star polymer and remains as a linear polymer.
- the linear polymer is substantially free of or free of a halogen, a nitroxide group or a dithioether group. In one embodi- ment the linear polymer has a substantially similar or identical composition and weight average molecular weight as the star polymer arms containing a polymerized alkyl (meth)acrylate ester.
- one or more of the arms of the star polymer are di- block AB type copolymers, in another embodiment tri-block ABA type copolymers, in another embodiment tapered block polymers, and in another embodiment alternating polymers.
- the star polymer described above in one embodiment is a block-arm star (co)polymer (where "(co)polymer” is used to mean “polymer or copolymer”), in another embodiment a hetero-arm star (co)polymer (as described below) and in another embodiment the star polymer is a tapered arm copolymer.
- a tapered arm copolymer has a variable composition across the length of a polymer chain.
- the tapered arm copolymer will be composed of, at one end, a relatively pure first monomer and, at the other end, a relatively pure second monomer.
- the middle of the polymer arm is more of a gradient composition of the two monomers.
- Tapered block copolymers may be coupled to form block-arm star polymers.
- the block-arm star (co)polymer contains one or more polymer arms derived from two or more monomers within the same arm.
- a more detailed description of the block-arm star polymer is given in Chapter 13 (pp. 333-368) of "Anionic Polymerization, Principles and Practical Applications” by Henry Hsieh and Roderic Quirk (Marcel Dekker, Inc., New York, 1996) (hereinafter referred to as Hsieh et al.).
- the hetero-arm, or "mikto-arm,” star polymer contains arms which may vary from one another either in molecular weight, composition, or both, as defined in Hsieh et al.
- a portion of the arms of a given star polymer can be of one polymeric type and a portion of a second polymeric type.
- More complex hetero-arm star polymers may be formed by combining portions of three or more polymeric arms with a coupling agent.
- the arms may be random copolymers. In certain embodiments they may be copolymers of 73 to 85, or 78 to 84, percent by weight of alkyl methacrylates having predominantly or exclusively 12 to 25 carbon atoms in the alkyl group, 14 to 25, or 16 to 20, percent by weight methyl methacrylate monomers, and 0.05 to 10, or 0.1 to 3, or 0.5 to 2, percent by weight alkyl methacrylate monomers having C6 to C IO carbon atoms in the alkyl groups, such as 2-ethylhexyl methacrylate.
- the polymeric arms will be attached to (or radiate from) a core which itself will typically have a polymeric or oligomeric structure.
- the core portion may be a polyvalent (meth) acrylic monomer, oligomer or polymer thereof or a polyvalent divinyl non-acrylic monomer oligomer or polymer thereof.
- the polyvalent monomer, oligomer or polymer thereof may be used alone or as a mixture.
- the polyvalent divinyl non-acrylic monomer is a divinyl benzene.
- the polyvalent (meth) acrylic monomer is an acrylate or methacrylate ester of a polyol or a methacrylamide of a polyamine, such as an amide of a polyamine, for instance a methacrylamide or an acrylamide.
- the polyvalent (meth) acrylic monomer is an acrylic or methacrylic acid polyol or a condensation product of a polyamine.
- the polyol in one embodiment contains 2 to 20 carbon atoms, or in other embodiments 3 to 15 or 4 to 12; and the number of hydroxyl groups present in one embodiment is 2 to 10, in another embodiment 2 to 4 and in another embodiment 2.
- polyols include ethylene glycol, poly (ethylene glycols), alkane diols such as 1 ,6-hexanene diol or triols such as trimethylolpropane, or oligomerized trimethylolpropanes.
- Examples of a polyamine include polyalkylenepolyammes, such as, ethyl enediamine, di ethyl enetriamine, tri ethyl enetetramine, tetraethylene pen- tamine, pentaethylenehexamine and mixtures thereof.
- Examples of the polyvalent unsaturated (meth) acrylic monomer include ethylene glycol diacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, glycerol diacrylate, glycerol triacrylate, mannitol hexaacrylate, 4-cyclohexanediol diacrylate, 1 ,4-benzenediol dimethacrylate, pentaerythritol tetraacrylate, 1 ,3 -propanediol diacrylate, 1 ,5-pentanediol dimethacrylate, bis-acrylates and methacrylates of polyethylene glycols of molecular weight 200-4000, polycaprolactonediol diacrylate, pentaerythritol triacrylate, 1 ,1 ,1- trimethylolpropane triacrylate, pentaerythritol diacrylate, pentaerythri
- the amount of polyvalent coupling agent may be an amount suitable to provide coupling of polymer previously prepared as arms onto a core comprising the coupling agent in monomeric, oligomeric, or polymeric form, to provide a star polymer.
- suitable amounts may be determined readily by the person skilled in the art with minimal experimentation, even though several variables may be involved. For example, if an excessive amount of coupling agent is employed, or if excessive unreacted monomer from the formation of the polymeric arms remains in the system, crosslinking rather than star formation may occur.
- the mole ratio of polymer arms to coupling agent may be 50: 1 to 1.5: 1 (or 1 : 1), or 30: 1 to 2: 1 , or 10: 1 to 3 : 1 , or 7: 1 to 4: 1 , or 4: 1 to 1 : 1.
- the mole ratio of polymer arms to coupling agent may be 50: 1 to 0.5 : 1 , or 30: 1 to 1 : 1 , or 7: 1 to 2: 1.
- the desired ratio may also be adjusted to take into account the length of the arms, longer arms sometimes tolerating or requiring more coupling agent than shorter arms.
- 1 to 5 parts by weight, or 2 to 4, or 2.5 to 3, parts by weight of a coupling agent such as ethylene glycol dimethacrylate may be used to react with pre-formed arms prepared with 100 parts by weight of (meth)acrylate monomers.
- a coupling agent such as ethylene glycol dimethacrylate
- the polymer prepared by coupling arms with a coupling agent may be further treated or reacted with various monomers such as additional acrylate or methacrylate monomers, e.g., methyl methacrylate, methyl acrylate, ethylhexyl methacrylate, ethylhexyl acrylate, or lauryl methacrylate.
- Such further treatment may be with a relatively minor amount of such monomer, e.g., 0.05 to 2 of 0.5 to 1.5 weight percent.
- the material prepared will be soluble in an oil of lubricating viscosity.
- the arms of the star polymer may each independently have a number average molecular weight of 4,000 to 200,000, or 10,000 to 100,000, or 15,000 to 50,000, or 10,000 to 200,000, or 20,000 to 100,000, or 35,000 to 50,000.
- the star polymer overall has a weight average molecular weight (M w ) of 5000 to 1,000,000, in another embodiment 10,000 to 1 ,000,000, in another embodiment 10,000 to 600,000 and in another embodiment 15,000 to 500,000 or 8,000 to 1,000,000 or 8,000 to 700,000.
- M w weight average molecular weight
- Examples of a suitable M w include 15,000 to 350,000, 15,000 to 50,000, 150,000 to 280,000, or 25,000 to 140,000, or to 280,000, or to 600,000.
- the star polymer overall has a polydispersity (M w /M n ) greater than 1.3 or 2, in one embodiment 3 or more, in another embodiment 4 or more and in another embodiment 5 or more.
- An upper range on the polydispersity may include 30 or 20 or 15 or 10. Examples of suitable ranges include 1.3 to 30, 3 to 15 or 1.3 to 10.
- the star polymer comprises a mixture of star and linear polymers. The polydispersity of said mixtures is the same as, or similar to, or slightly larger than the ranges described immediately above.
- the (meth)acrylate-containing polymer comprising a multiplicity of arms may be a comb polymer, as described in greater detail in U.S. patent 8,067,349.
- Such as material may comprise a main chain from which arms emanate.
- the main chain may comprise repeat units derived from low molecular weight monomers such as styrene or substituted styrene, alkyl(meth)acrylates having 1 to 10 carbon atoms in the alcohol (alkyl) group, vinyl esters, vinyl ethers, and other such as described in claim 1 of US 8,067,349.
- polyolefin-based macromonomers which may have a number average molecular weight in the range of 700 to 10,000, and which may also contain non-olefinic monomers.
- the macromonomer will typically have exactly one polymerizable double bond which may be a terminal bond.
- a cationic polymerization of isobutylene may form a polyisobutylene which has a terminal double bond.
- Typical macromonomers may be prepared by reacting a macroamine (long chain amine) or a macroalcohol (long chain alcohol), each based on a polyolefin, with methyl methacrylate by an aminolysis or transesterification reaction. Further details of their synthesis are reported in the aforementioned US 8,067,349.
- the molecular weights and compositions of the branches described above for the star polymers may also be applied to the branches of the comb polymer.
- polymers having a multiplicity of arms include those described in U.S. Application 2003-0036488, Yuki et al., February 20, 2003.
- the materials disclosed therein may include polymers prepared from monomers such as 2-decyl- tetradecyl methacrylate, 2-dodecyl-hexadecyl methacrylate, or 2-decyl- tetradecyloxyethyl methacrylate.
- Those particular monomers may have arms with 20 to 30 or 24 to 28 carbon atoms and may also contain ether functionality. In some embodiments these arms have a branch at the ⁇ -position.
- the alcohols from which they are derived are referred to as Guerbet alcohols.
- Guerbet alcohols typically have one or more carbon chains with branching at the ⁇ - or higher position.
- the Guerbet alcohols in general may contain, in various embodiments, 10 to 60, or 12 to 60, or 16 to 40, or 20 to 30 carbon atoms.
- Methods to prepare Guerbet alcohols are disclosed in US Patent 4,767,815 (see column 5, line 39 to column 6, line 32). Correspondingly longer arms may also be used.
- the arms may comprise hydrocarbyl groups or may comprise hydrocarbyl monomer units.
- the arms may be polymeric entities comprising conjugated diene monomer units (optionally hydrogenated) or isobutylene monomer units.
- the conjugated diene may comprise butadiene, that is, 1,3- butadiene or isoprene.
- the amount of the (meth)acrylate-containing polymer comprising a multiplicity of arms is present in a lubricating composition in an amount of 0.1 to 5 percent by weight or 0.1 to 2.5 percent by weight, or 0.25 to 5 percent by weight, or 0.25 to 2.5 percent by weight, or 0.5 to 4, or 1 to 3.5, or 1.3 to 3.4, percent by weight. It may also be provided as a concentrate in an oil or other medium, in which case its amount within the concentrate will be correspondingly greater, such as 1 to 25 or 2.5 to 25 or to 50 percent by weight.
- the lubricant composition will also contain a second polymer which is an ethylene/olefin copolymer having a weight average molecular weight of 5,000 to 250,000, or 10,000 to 250,000, or alternatively 10,000 to 200,000, or 20,000 to 180,000, or 15,000 to 150,000, or 20,000 to 100,000, or 20,000 to 80,000 or, alternatively, 100,000 to 200,000 or 100,000 to 180,000.
- This polymer may also be of a form having long arms, although it may also be of a more conventional linear or branched structure.
- the second copolymer itself the ethylene-olefin copolymer, will comprise 40 to 75 or 40 to 70 weight percent polymerized ethylene monomers and will further comprise one or more polymerized olefin monomers of 3 to 6 carbon atoms.
- the olefin monomers may comprise at least one of propylene or butylene monomer units, and in one embodiment may comprise propylene monomer units.
- the second polymer may comprise 40 to 50 percent by weight ethylene monomer units and 50 to 60 percent by weight of the other olefin monomer units such as propylene monomer units.
- Other monomers may also be present, such as non-conjugated diene units, optionally hydrogenated, typically in an amount of 0-10 percent by weight, or 1 to 5 percent.
- the amount of the ethylene/olefin copolymer in a fully formulated lubricant may be 0.03 to 1 , or 0.05 to 0.5, or 0.1 to 0.4, or 0.1 to 10, or 0.1 to 2.5 percent by weight. It may also be provided as a concentrate in an oil or other medium, in which case its amount within the concentrate will be correspondingly greater, such as 5 to 15 percent by weight. Both polymers may be present in the same concentrate at the identified amounts.
- Suitable olefin copolymers are well known and are described, for instance, in U.S. Application 2008/0015131 , Vinci et al. Such polymers are commercially available as LucantTM polymer, TrileneTM polymers, NordelTM polymers, ParatoneTM polymers, Lubrizol ® 70XY series polymers, and RoyaleneTM polymers.
- Copolymers of aliphatic olefins may thus comprise an ethylene-aliphatic olefin copolymer wherein the aliphatic olefins, typically alpha olefins, contain 3 to 24 carbon atoms, said copolymers having an Mn from 500 to 5000, such as 800 to 4000 or 2000 to 4000. At least some propylene monomer will typically be present.
- the polydispersity (M w /M n ) may be from 1.1 to 3, such as 1.3 to 2.5 or 2.0 to 2.4.
- Such polymers may be formed by copolymerization of ethylene and one or more aliphatic olefins under conditions known in the art. Examples include polymerizations conducted using Ziegler-Natta or metallocene catalysts.
- Over- based materials are generally single phase, homogeneous Newtonian systems characterized by a metal content in excess of that which would be present for neutralization according to the stoichiome- try of the metal and the particular acidic organic compound reacted with the metal.
- the overbased materials may be prepared by reacting an acidic material (typically an inorganic acid or lower carboxylic acid such as carbon dioxide) with a mixture comprising an acidic organic compound, a reaction medium comprising at least one inert, organic solvent (such as mineral oil, naphtha, toluene, xylene) for said acidic organic material, a stoichiometric excess of a metal base, and a promoter such as a phenol or alcohol.
- the acidic organic material will normally have a sufficient number of carbon atoms to provide a degree of solubility in oil.
- the amount of excess metal is commonly expressed in terms of metal ratio.
- the term "metal ratio" is the ratio of the total equivalents of the metal to the equivalents of the acidic organic compound.
- a neutral metal salt has a metal ratio of one.
- a salt having 4.5 times as much metal as present in a normal salt will have metal excess of 3.5 equivalents, or a ratio of 4.5.
- overbased materials are well known to those skilled in the art. They are useful for a variety of purposes, including cleanliness and neutralization of acidic byproducts of combustion when used in engine lubricants; they may also provide control of friction or control of corrosion.
- Patents describing techniques for making basic salts of sulfonic acids, carboxylic acids, phenols, phosphonic acids, and mixtures of any two or more of these include U.S. Patents 2,501,731; 2,616,905; 2,616,911; 2,616,925;
- the lubricant comprises an overbased sulfonate detergent, an overbased phenol-containing detergent, or mixtures there.
- the amount of detergent in a fully formulated lubricant may be 0.01 to 15 percent by weight, or 0.1 to 5 , or 0.5 to 2, or 1 to 3 percent.
- Dispersants are also well known additives in the field of lubricants and include primarily what is known as ashless dispersants and polymeric dispersants. Ashless dispersants are so-called because, as supplied, they do not contain metal and thus do not normally contribute to sulfated ash when added to a lubricant. However they may, of course, interact with ambient metals once they are added to a lubricant which includes metal-containing species. Ashless dispersants are characterized by a polar group attached to a relatively high molecular weight hydrocarbon chain.
- Typi- cal ashless dispersants include N-substituted long chain alkenyl succinimides, having a variety of chemical structures including typically
- each R is independently an alkyl group, frequently a polyisobutylene group with a molecular weight (Mn) of 500-5000 based on the polyisobutylene precursor, and R are alkylene groups, commonly ethylene (C 2 H 4 ) groups.
- R are alkylene groups, commonly ethylene (C 2 H 4 ) groups.
- Such molecules are commonly derived from reaction of an alkenyl acylating agent with a polyamine, and a wide variety of linkages between the two moieties is possible beside the simple imide structure shown above, including a variety of amides and quaternary ammoni- um salts.
- the amine portion is shown as an alkylene polyamine such as polyethylene polyamine, although other aliphatic and aromatic mono- and polyamines may also be used, such as amino diphenyl amine.
- the dispersant may be formed by a process involving the use of chlorine or by a thermal "ene” process or a free radical process.
- the average number of succinic acid groups attached to an R 1 group (e.g., polyisobutylene group) may be, in certain embodiments, 1.1 to 2.0, or 1.15 to 1.35, 1.30 to 1.8, or 1.4 to 1.7.
- the ratio of the carbonyl groups of the acylating agent to the nitrogen atoms of the amine may be 1 :0.5 to 1 :3, and in other instances 1 : 1 to 1 :2.75 or 1 : 1.5 to 1 :2.5.
- Succinimide dispersants are more fully described in U.S. Patents 4,234,435 and 3,172,892 and in EP 0355895.
- Another class of ashless dispersant is high molecular weight esters. These materials are similar to the above-described succinimides except that they may be seen as having been prepared by reaction of a hydrocarbyl acylating agent and a polyhydric aliphatic alcohol such as glycerol, pentaerythritol, or sorbitol. Such materials are described in more detail in U.S. Patent 3,381,022.
- Mannich bases are materials which are formed by the condensation of a higher molecular weight, alkyl substituted phenol, an alkylene polyamine, and an aldehyde such as formaldehyde. Such materials are described in more detail in U.S. Patent 3,634,515.
- dispersants include polymeric dispersant additives, which are generally hydrocarbon-based polymers which contain polar functionality to impart dispersancy characteristics to the polymer.
- Dispersants can also be post -treated by reaction with any of a variety of agents. Among these are urea, thiourea, dimercaptothiadiazoles, carbon disulfide, aldehydes, ketones, carboxylic acids, hydrocarbon-substituted succinic anhydrides, nitriles, epoxides, boron compounds, and phosphorus compounds. References detail- ing such treatment are listed in U.S. Patent 4,654,403.
- the lubricant composition comprises at least one boron-containing dispersant.
- the amount of the dispersant in a fully formulated lubricant of the present technology may be at least 0.1% of the lubricant composition, or at least 0.3% or 0.5% or 1%, and in certain embodiments at most 9% or 8% or 6% or 4% or 3% or 2% by weight.
- the lubricant may also contain a metal salt of a phosphorus acid.
- R and R are independently hydrocarbyl groups containing 3 to 30 carbon atoms, are readily obtainable by heating phosphorus pentasulfide (P 2 S 5 ) and an alcohol or phenol to form an 0,0-dihydrocarbyl phosphorodithioic acid.
- P 2 S 5 phosphorus pentasulfide
- the R and R groups may be a mixture of alcohols, for instance, a mixture of isopropanol and 4-methyl-2-pentanol, and in some embodiments a mixture of a secondary alcohol and a primary alcohol, such as isopropanol and 2-ethylhexanol.
- Other alcohols may include secondary-butyl alcohol or iso-octyl alcohol.
- the resulting acid may be reacted with a basic metal compound to form the salt.
- the metal M having a valence n, generally is aluminum, lead, tin, manganese, cobalt, nickel, zinc, or copper, and in many cases, zinc, to form zinc dialkyldithio- phosphates.
- the amount of the metal salt of a phosphorus acid in a completely formulated lubricant will typically be 0.1 to 4 percent by weight, such as 0.5 to 2 percent by weight or 0.75 to 1.25 percent by weight.
- the amount may be, in some embodiments, an amount which delivers phosphorus to the lubricant at 0.01 to 0.15 percent by weight, or 0.03 to 0.08, or 0.03 to 0.06 percent by weight.
- Viscosity modifiers and dispersant viscosity modifiers (DVM) are well known.
- VMs and DVMs may include polymethacrylates, polyacrylates, polyolefins, hydrogenated vinyl aromatic- diene copolymers (e.g., styrene-butadiene, styrene-isoprene), styrene-maleic ester copolymers, and similar polymeric substances including homopolymers, copolymers, and graft copolymers.
- the DVM may comprise a nitrogen-containing methacrylate polymer, for example, a nitrogen-containing methacrylate polymer derived from methyl methacrylate and dimethylaminopropyl amine.
- Examples of commercially available VMs, DVMs and their chemical types may include the following: polyisobutylenes (such as IndopolTM from BP Amoco or ParapolTM from ExxonMobil); olefin copolymers (such as LubrizolTM 7060, 7065, and 7067 from Lubrizol and LucantTM HC-2000L and HC-600 from Mitsui); hydro- genated styrene-diene copolymers (such as ShellvisTM 40 and 50, from Shell and
- LZ® 7308, and 7318 from Lubrizol styrene/maleate copolymers, which are dispersant copolymers (such as LZ® 3702 and 3715 from Lubrizol); polymethacrylates, some of which have dispersant properties (such as those in the ViscoplexTM series from RohMax, the HitecTM series of viscosity index improvers from Afton, and LZ® 7702, LZ® 7727, LZ® 7725 and LZ® 7720C from Lubrizol); olefin-graft- polymethacrylate polymers (such as ViscoplexTM 2-500 and 2-600 from RohMax); and hydrogenated polyisoprene star polymers (such as ShellvisTM 200 and 260, from Shell).
- dispersant copolymers such as LZ® 3702 and 3715 from Lubrizol
- polymethacrylates some of which have dispersant properties (such as those in the ViscoplexTM series from RohMax, the HitecTM series of visco
- Viscosity modifiers that may be used are described in U.S. patents 5,157,088, 5,256,752 and 5,395,539.
- the VMs and/or DVMs may be used in the functional fluid at a concentration of up to 20% by weight. Concentrations of 1 to 12%, or 3 to 10% by weight may be used.
- Another component may be an antioxidant.
- Antioxidants encompass phenolic antioxidants, which may be hindered phenolic antioxidants, onr or both orthopositions on a phenolic ring being occupied by bulky groups such as t-butyl.
- the para position may also be occupied by a hydrocarbyl group or a group bridging two aromatic rings. In certain embodiments the para position is occupied by an ester- containing group, such as, for example, an antioxidant of the formula
- R is a hydrocarbyl group such as an alkyl group containing, e.g., 1 to 18 or 2 to 12 or 2 to 8 or 2 to 6 carbon atoms; and t-alkyl can be t-butyl.
- alkyl group containing, e.g., 1 to 18 or 2 to 12 or 2 to 8 or 2 to 6 carbon atoms e.g., 1 to 18 or 2 to 12 or 2 to 8 or 2 to 6 carbon atoms
- t-alkyl can be t-butyl.
- Antioxidants also include aromatic amines.
- an aromatic amine antioxidant can comprise an alkylated diphenylamine such as nonylated diphenylamine or a mixture of a di-nonylated and a mono-nonylated diphenylamine.
- Other amine antioxidants include phenylnaphthylamine and alkylated phenylnaph- thyl amines.
- Antioxidants also include sulfurized olefins such as mono- or disulfides or mixtures thereof, for instance, sulfurized diisobutylene, or sulfurized a-olefms. These materials generally have sulfide linkages of 1 to 10 sulfur atoms, e.g., 1 to 4, or 1 or 2.
- Materials which can be sulfurized to form the sulfurized organic compositions of the present invention include oils, fatty acids and esters, olefins and polyolefins made thereof, terpenes, or Diels- Alder adducts. Details of methods of preparing some such sulfurized materials can be found in U.S. Pat. Nos. 3,471 ,404 and 4, 191 ,659.
- Molybdenum compounds can also serve as antioxidants, and these materials can also serve in various other functions, such as antiwear agents or friction modifiers.
- U.S. Pat. No. 4,285,822 discloses lubricating oil compositions containing a molybdenum- and sulfur-containing composition prepared by combining a polar solvent, an acidic molybdenum compound and an oil-soluble basic nitrogen compound to form a molybdenum-containing complex and contacting the complex with carbon disulfide to form the molybdenum- and sulfur-containing composition.
- Mo- lybdenum dithiocarbamates and other molybdenum compounds are commercially available.
- titanium compounds such as titanium alkoxides such as titanium 2-ethylhexoxide, or titanium carboxylates such as the neodecanoate can provide a variety of benefits, including antioxidancy and antiwear performance.
- Dithiocarbamates may also serve as antioxidants.
- Typical amounts of antioxidants will, of course, depend on the specific antioxidant and its individual effectiveness, but illustrative total amounts can be 0.01 to 5 percent by weight or 0.15 to 4.5 percent or 0.2 to 4 percent or 0.5 to 2 percent or 0.05 to 0.1 percent.
- antiwear agent Another additive is an antiwear agent.
- anti-wear agents include phosphorus-containing antiwear/extreme pressure agents such as metal thiophosphates, phosphoric acid esters and salts thereof, phosphorus-containing carboxylic acids, esters, ethers, and amides; and phosphites.
- a phosphorus antiwear agent may be present in an amount to deliver 0.01 to 0.2 or 0.015 to 0.15 or 0.02 to 0.1 or 0.025 to 0.08 percent phosphorus.
- the antiwear agent may comprise an ashless (non-metal-containing) dithio- phosphate.
- the antiwear agent is a zinc dialkyldithiophosphate (ZDP), as described above.
- Non- phosphorus-containing anti-wear agents include borate esters (including borated epoxides), dithiocarbamate compounds, mo lybdenum- containing compounds, and sulfurized olefins.
- antiwear agents also referred to as ashless antiwear agents
- tartrate esters include tartramides, and tartrimides.
- Exam- pies include oleyl tartrimide (the imide formed from oleylamine and tartaric acid) and oleyl diesters (from, e.g, mixed C 12-16 alcohols).
- Other related materials that may be useful include esters, amides, and imides of other hydroxy-carboxylic acids in general, including hydroxy-polycarboxylic acids, for instance, acids such as tartaric acid, malic acid, citric acid, lactic acid, glycolic acid, hydroxy-propionic acid, hydroxyglu- taric acid, and mixtures thereof.
- Such materials may also impart additional functionality to a lubricant beyond antiwear performance. These materials are described in greater detail in US Publication 2006-0079413 and PCT publication WO2010/077630. Such derivatives of (or compounds derived from) a hydroxy- carboxylic acid, if present, may typically be present in the lubricating composition in an amount of 0.1 weight % to 5 weight %, or 0.2 weight % to 3 weight %, or greater than 0.2 weight % to 3 weight %.
- Friction modifiers are well known to those skilled in the art. A list of friction modifiers that may be used is included in U.S.
- U.S. Patent 5,1 10,488 discloses metal salts of fatty acids and especially zinc salts, useful as friction modifi- ers.
- a list of friction modifiers that may be useful may include:
- glycerol esters such as glycerol monooleate
- hydroxyalkyl amides polyhydroxy tertiary amines
- a lubricant is to be used to lubricate a device that encompasses a wet (lubricated) clutch
- additives may be present which control the amount of slip between the components of the clutch, that is, provide a relatively high, stable coefficient of friction between the clutch components, such as at a friction plate-steel plate interface.
- Such materials may be borated disper- sants, certain phosphorus-containing compounds, and certain amide compounds.
- Other materials that may be useful in providing such performance may include branched-alkyl calcium sulfonate detergents and calcium alkylphenate detergents.
- additives that may optionally be used in lubricating oils include one or more of pour point depressing agents, extreme pressure agents, anti-wear agents, color stabilizers, demulsifiers, rust inhibitors, metal deactivators, and anti-foam agents.
- Anti-foam agents also known as foam inhibitors are known in the art and include but are not limited to organic silicones and non-silicon foam inhibitors. Some examples of organic silicones include dimethyl silicone and polysiloxanes. Some examples of non-silicon foam inhibitors include copolymers of ethyl acrylate and 2- ethylhexylacrylate, copolymers of ethyl acrylate, 2-ethylhexyl acrylate, and vinyl acetate, polyethers, polyacrylates, and mixtures thereof. In some embodiments the antifoam agent may be a polyacrylate. Antifoam agents may be present in a lubricant composition in amounts of 0.001 to 0.012 percent by weight or to 0.004 percent, or 0.001 to 0.003 percent by weight.
- Demulsifiers are known in the art and include but are not limited to derivatives of propylene oxide, ethylene oxide, polyoxyalkylene alcohols, alkyl amines, amino alcohols, diamines, or polyamines, reacted sequentially with ethylene oxide or substituted ethylene oxides or mixtures thereof.
- demulsifiers include polyethylene glycols, polyethylene oxides, polypropylene oxides such as ethylene oxide-propyelene oxide polymers, and mixtures thereof.
- the demulsifier may be a polyether.
- Demulsifiers may be present in a lubricant at 0.002 to 0.012 weight percent.
- pour point depressants are known in the art and include but are not limited to esters of maleic anhydride-styrene copolymers; polymethacrylates; polyacrylates; polyacrylamides; condensation products of haloparaffin waxes and aromatic com- pounds; vinyl carboxylate polymers; copolymers comprising dialkyl fumarates; polyalphaolefins, vinyl esters of fatty acids; ethylene-vinyl acetate copolymers; alkyl phenol formaldehyde condensation resins; alkyl vinyl ethers; and mixtures thereof.
- Rust inhibitors may include hydrocarbyl amine salts of alkylphosphoric acid, hydrocarbyl amine salts of dialkyldithiophosphoric acid, hydrocarbyl amine salts of hydrocarbyl aryl sulfonic acids, fatty carboxylic acids or esters thereof
- a rust inhibitor may be present in a lubricant in an amount of 0.02 to 0.2 percent by weight, or 0.03 to 0.15, or 0.04 to 0.12, or 0.05 to 0.10 percent by weight.
- Metal deactivators may be used to neutralize the catalytic effect of metals for promoting oxidation in lubricating oils. Suitable metal deactivators include but are not limited to triazoles, tolyltriazoles, thiadiazoles, and combinations or derivatives thereof.
- Examples include derivatives of benzotriazoles, benzimidazoles, 2- alkyldithiobenzimidazoles, 2-alkyldithiobenzothiazoles, 2-(N,N'-dialkyldithio- carbamoyl)benzothiazoles, 2,5-bis(alkyldithio)-l ,3,4-thiadiazoles, 2,5-bis-(N,N'- dialkyldithiocarbamoyl-l,3,4-thiadiazoles, 2-alkyldithio-5-mercaptothiadaizoles, and mixtures thereof.
- a metal deactivator may be present in an amount of 0.001 to 0.1 , or 0.1 to 0.04, or 0.15 to 0.03 percent by weight.
- a lubricant further comprises (in addition to the polymers disclosed herein) at least one of a detergent, a dispersant, an antioxidant, an anti-wear agent, a friction modifier, a pour point depressant, a corrosion inhibitor, and antifoam agent, a demulsifier, a metal deactivator, or a metal salt of a phosphorus acid; in one embodiment a lubricant composition further comprises an overbased detergent in an amount of 0.5 to 2.0 weight percent and an ashless dispersant in an amount of 0.5 to 3 weight percent.
- the additives and the lubricant compositions described above may be used for lubricating a mechanical device, and such lubrication may comprise supplying to the device, or to that part of the device that admits the lubricant, the lubricant as described herein.
- suitable devices may include internal combustion engines such spark-ignited engines, passenger car engines, or motorcycle engines; gears, clutches, transmissions, hydraulic devices, and turbines.
- the lubricant may be a liquid lubricant or a grease.
- Engines may include internal combustion engines such as a gasoline or spark-ignited engine such as a passenger car engine, a diesel or compression-ignited engine such as a passenger car diesel engine, heavy duty diesel truck engine, a natural gas fueled engine such as a stationary power engine, an alcohol-fueled engine, a mixed gasoline/alcohol fueled engine, a bio-diesel fueled engine, a hydrogen-fueled engine, a two-cycle engine, an aviation piston or turbine engine, or a marine or railroad diesel engine.
- the internal combustion engine may be a diesel fueled engine and in another embodiment a gasoline fueled engine or a hydrogen-fueled engine.
- the internal combustion engine may be fitted with an emission control system or a turbocharger. Examples of emission control systems include diesel particulate filters (DPF), exhaust gas recirculation (EGR), and systems employing selective catalytic reduction (SCR).
- DPF diesel particulate filters
- EGR exhaust gas recirculation
- SCR selective catalytic reduction
- the engine may also be a motorcycle engine and the lubricant may be considered a motorcycle lubricant.
- Lubricants for motorcycles typically provide lubrication for the engine (a crankcase) as well as a wet clutch. These two devices, although often lubricated by the same fluid, often have different lubrication requirements.
- the lubrication of the engine desirably provides low metal-on- metal friction, to promote good fuel economy. (Typically, the "metal" referred to is steel.)
- the friction coefficient for the metal-on-composition interfaces located within the wet clutch may desirably be relatively high, to assure good en- gagement and power transmission.
- motorcycle lubricants will also lubricate other devices such as gears or bearings, each having their own lubricating requirement.
- the lubricant as described herein may lubricate both the engine and the wet clutch of a motorcycle.
- Hydraulic fluids may be more generally described as, or may be consid- ered a species of, industrial fluids, which may include hydraulic fluids, turbine oils, circulating oils, or combinations thereof.
- a hydraulic fluid may be considered to a fluid that transfers force through a device by virtue of its fluid properties.
- the hydraulic system may comprise a hydraulic pump such as a piston pump, vane pump, gear pump, or a combination of these. It may also contain hydraulic motors or hy- draulic pistons used to actuate wheels or tracks for locomotion and/or operation of implements, such as buckets, diggers, or rams.
- Mobile hydraulic systems include those used on wheel loaders, backhoes, excavators, rollers, and farm equipment.
- Hydraulic fluids and hydraulic equipment may be used in transportation vehicles systems, such as hydraulic launch assists or hydraulic braking systems, as well as in stationary devices.
- the hydraulic system may be capable of transferring rotational energy into a stored energy reservoir for later reconversion into rotational energy.
- the hydraulic fluid may optionally be zinc free, metal free, or ashless or may optionally contain any of the aforesaid features.
- condensation product and its cognates (e.g., "condensed") is intended to encompass esters, amides, imides and other such materi- als that may be prepared by a condensation reaction of an acid or a reactive equivalent of an acid (e.g., an acid halide, anhydride, or ester) with an alcohol or amine, irrespective of whether a condensation reaction is actually performed to lead directly to the product.
- an acid e.g., an acid halide, anhydride, or ester
- a particular ester may be prepared by a transesteri- fication reaction rather than directly by a condensation reaction.
- the resulting prod- uct is still considered a condensation product.
- each chemical component described is presented exclusive of any solvent or diluent oil, which may be customarily present in the commercial material, that is, on an active chemical basis, unless otherwise indicated.
- each chemical or composition referred to herein should be interpreted as being a commercial grade material which may contain the isomers, byproducts, derivatives, and other such materials which are normally understood to be present in the commercial grade.
- hydrocarbyl substituent or “hydrocarbyl group” is used in its ordinary sense, which is well-known to those skilled in the art. Specifi- cally, it refers to a group having a carbon atom directly attached to the remainder of the molecule and having predominantly hydrocarbon character.
- hydrocarbyl groups include: hydrocarbon substituents, including aliphatic, alicyclic, and aromatic substituents; substituted hydrocarbon substituents, that is, substituents containing non-hydrocarbon groups which, in the context of this invention, do not alter the predominantly hydrocarbon nature of the substituent; and hetero substituents, that is, substituents which similarly have a predominantly hydrocarbon character but contain other than carbon in a ring or chain.
- hydrocarbyl substituents including aliphatic, alicyclic, and aromatic substituents
- substituted hydrocarbon substituents that is, substituents containing non-hydrocarbon groups which, in the context of this invention, do not alter the predominantly hydrocarbon nature of the substituent
- hetero substituents that is, substituents which similarly have a predominantly hydrocarbon character but contain other than carbon in a ring or chain.
- Lubricants are prepared in a formulation to have a viscosity index of about 140 with a variety of ISO grades (represented by kinematic viscosity at 40 °C, mm /s).
- the lubricants are prepared from the base oils indicated, and each formulation contains about 0.85% of a commercial dispersant/inhibitor ("DI") package which in turn comprises a zinc dialkyldithiophosphate, a phenolic antioxidant, calcium detergents (alkylsulfonate(s) and phenate(s)), an alkyl-substituted carboxylic anhydride, and small amounts of other inhibitor(s) and other conventional materials, as well as diluent oil.
- DI dispersant/inhibitor
- Formulations can be made in various viscosity grades, as illustrated in
- a Relative amounts, totaling 100% oil; API Groups I or III as indicated.
- b Oil-free amount. As supplied, contains 53% oil.
- Polymer is a star polymer with 6- 15 arms on average, the arms having a M n of about 35,000 to 50,000. The arms are random copolymers comprising C I 0-18 alkyl methacrylate monomer(s) and CI -9 alkyl methacrylate monomer(s), linked to a core prepared from an alkylene glycol dimethacrylate.
- Oil-free amount As supplied, contains 87% oil.
- Polymer is a commercial ethylene/propylene copolymer, about 45 percent by weight ethylene monomer units, having a M w of about 150,000.
- Lubricants are prepared targeting an ISO 46 viscosity grade, using varying amounts and various relative ratios of star polymer and ethylene/olefin copolymer.
- the DI package is the same commercial package that is used in Examples 1-5. Footnotes a, b, and c from Table I apply.
- Lubricants are prepared with formulations as set forth in Table III (footnotes a, b, and c from Table I apply):
- the lubricants are also subjected to the 104c ("Conestoga") pump test, as described in greater detail in ISO20763, and the results are also reported in Table III.
- a pump cam ring and vanes are weighed before and after the test, and the weight loss from the ring and vanes is measured.
- the test length is 250 hours, the temperature 69 °C, pressure of 14 MPa (140 bar) and 1440 r.p.m.
- the lubricant sample size is 70 L with a flow rate of about 25 L/min.
- the results show that the material of the disclosed technology provides dramatically reduced wear compared with a similar formulation using a conventional linear methacrylate copolymer viscosity modifier.
- Examples 14-17. Formulations are prepared as shown in Table IV, below, using comb polymers identified as d or e in the footnotes or, for reference, a linear methacrylate polymer.
- Oil free amount contains 60%> oil.
- a comb polymer comprising 5% by weight C12-15 alkyl methacrylate, 83% by weight C4 methacrylate, and 12% by weight macromonomer comprising an alkyl methacrylate where the alkyl group is derived from polybutadiene (hydrogenated) having about 355 carbon atoms. M w 182,000.
- Oil free amount; as supplied contains 60% oil.
- Lubricant formulations are prepared as shown in Table V. (Amount of base oil is given as percentage of the lubricant formulation.)
- a commercial passenger car engine oil dispersant/inhibitor package containing about 17%) Na and Ca overbased detergents, 44% dispersant(s), 9% zinc dialkyldithiophos- phates, 17% antioxidants, and 8% alkyl tartrimide, each of the foregoing containing conventional amounts (if any) of diluent oil, plus further diluent oil and smaller amounts of other conventional components.
- a methacrylate copolymer; amount includes about 50% diluent oil
- a multipurpose commercial additive package containing 21% overbased detergents), 54%) dispersant(s), 12%> antioxidants, and 10%> zinc dialkyldithiophosphate, each of the foregoing containing conventional amounts (if any) of diluent oil, plus further diluent oil and smaller amounts of other conventional components.
- Lubricants which contain the mixture of Star polymer and olefin copolymer exhibit reduced MRV viscosity and increased viscosity index with good retention of viscosity after shear as measured according to ASTM D7109 (90-pass "Orbahn" shear stability test, in which polymer-containing fluid is passed through a BoschTM diesel injector nozzle at high pressure. This treatment causes degradation of polymer molecules. Kinematic viscosity at 100°C before and after shear is determined).
- the transitional term "comprising,” which is synonymous with “including,” “containing,” or “characterized by,” is inclusive or open-ended and does not exclude additional, un-recited elements or method steps.
- the term also encompass, as alternative embodiments, the phrases “consisting essentially of and “consisting of,” where “consisting of excludes any element or step not specified and “consisting essentially of permits the inclusion of additional un-recited elements or steps that do not materially affect the essential or basic and novel characteristics of the composi- tion or method under consideration.
- the expression “consisting of or “consisting essentially of,” when applied to an element of a claim, is intended to restrict all species of the type represented by that element, notwithstanding the presence of the term “comprising” elsewhere in the claim.
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Abstract
Description
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US201461955392P | 2014-03-19 | 2014-03-19 | |
PCT/US2015/017191 WO2015142482A1 (en) | 2014-03-19 | 2015-02-24 | Lubricants containing blends of polymers |
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2015
- 2015-02-24 CA CA2943053A patent/CA2943053A1/en not_active Abandoned
- 2015-02-24 EP EP15708085.4A patent/EP3119860A1/en not_active Withdrawn
- 2015-02-24 WO PCT/US2015/017191 patent/WO2015142482A1/en active Application Filing
- 2015-02-24 SG SG11201607626WA patent/SG11201607626WA/en unknown
- 2015-02-24 SG SG10201807951RA patent/SG10201807951RA/en unknown
- 2015-02-24 AU AU2015231906A patent/AU2015231906A1/en not_active Abandoned
- 2015-02-24 KR KR1020167028963A patent/KR20160135311A/en unknown
- 2015-02-24 JP JP2016557607A patent/JP2017508053A/en active Pending
- 2015-02-24 US US15/126,739 patent/US20170088789A1/en not_active Abandoned
- 2015-02-24 CN CN201580026412.5A patent/CN106459813A/en active Pending
Non-Patent Citations (2)
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Also Published As
Publication number | Publication date |
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CN106459813A (en) | 2017-02-22 |
KR20160135311A (en) | 2016-11-25 |
US20170088789A1 (en) | 2017-03-30 |
SG10201807951RA (en) | 2018-10-30 |
JP2017508053A (en) | 2017-03-23 |
AU2015231906A1 (en) | 2016-09-22 |
CA2943053A1 (en) | 2015-09-24 |
WO2015142482A1 (en) | 2015-09-24 |
SG11201607626WA (en) | 2016-10-28 |
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