US2404871A - Lubricating compositions - Google Patents
Lubricating compositions Download PDFInfo
- Publication number
- US2404871A US2404871A US496678A US49667843A US2404871A US 2404871 A US2404871 A US 2404871A US 496678 A US496678 A US 496678A US 49667843 A US49667843 A US 49667843A US 2404871 A US2404871 A US 2404871A
- Authority
- US
- United States
- Prior art keywords
- sulfur
- oil
- compounds
- lubricating
- oils
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 title description 21
- 230000001050 lubricating effect Effects 0.000 title description 8
- 239000011593 sulfur Substances 0.000 description 55
- 229910052717 sulfur Inorganic materials 0.000 description 55
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 54
- 239000003921 oil Substances 0.000 description 51
- 235000019198 oils Nutrition 0.000 description 51
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 41
- 239000010687 lubricating oil Substances 0.000 description 35
- 238000000034 method Methods 0.000 description 32
- 150000001875 compounds Chemical class 0.000 description 26
- 239000003208 petroleum Substances 0.000 description 23
- 150000003464 sulfur compounds Chemical class 0.000 description 20
- 239000012141 concentrate Substances 0.000 description 19
- 239000003963 antioxidant agent Substances 0.000 description 18
- 235000006708 antioxidants Nutrition 0.000 description 18
- 230000003078 antioxidant effect Effects 0.000 description 16
- 229960000583 acetic acid Drugs 0.000 description 15
- 150000002730 mercury Chemical class 0.000 description 14
- 239000002253 acid Substances 0.000 description 13
- 239000000314 lubricant Substances 0.000 description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
- 238000011282 treatment Methods 0.000 description 12
- 235000011054 acetic acid Nutrition 0.000 description 11
- 239000000654 additive Substances 0.000 description 11
- -1 alkaryl sulfides Chemical class 0.000 description 11
- 239000010426 asphalt Substances 0.000 description 10
- 239000000284 extract Substances 0.000 description 10
- 238000001556 precipitation Methods 0.000 description 10
- QXKXDIKCIPXUPL-UHFFFAOYSA-N sulfanylidenemercury Chemical compound [Hg]=S QXKXDIKCIPXUPL-UHFFFAOYSA-N 0.000 description 10
- 238000000605 extraction Methods 0.000 description 9
- BRMYZIKAHFEUFJ-UHFFFAOYSA-L mercury diacetate Chemical compound CC(=O)O[Hg]OC(C)=O BRMYZIKAHFEUFJ-UHFFFAOYSA-L 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 239000003599 detergent Substances 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 229930195733 hydrocarbon Natural products 0.000 description 7
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 150000007513 acids Chemical class 0.000 description 6
- 239000002585 base Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 239000010802 sludge Substances 0.000 description 6
- 238000000638 solvent extraction Methods 0.000 description 6
- 239000010949 copper Substances 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 5
- 239000000194 fatty acid Substances 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000012362 glacial acetic acid Substances 0.000 description 4
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 239000001993 wax Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- WIKSRXFQIZQFEH-UHFFFAOYSA-N [Cu].[Pb] Chemical compound [Cu].[Pb] WIKSRXFQIZQFEH-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 150000001412 amines Chemical group 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 239000003350 kerosene Substances 0.000 description 3
- 239000004922 lacquer Substances 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 230000009972 noncorrosive effect Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229910002067 modern alloy Inorganic materials 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- 150000007530 organic bases Chemical class 0.000 description 2
- 238000006864 oxidative decomposition reaction Methods 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000012188 paraffin wax Chemical class 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 150000003460 sulfonic acids Chemical class 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- WALBTDFSFTVXII-UHFFFAOYSA-N 2,3,4,5,6-pentamethylphenol Chemical compound CC1=C(C)C(C)=C(O)C(C)=C1C WALBTDFSFTVXII-UHFFFAOYSA-N 0.000 description 1
- WKFQMDFSDQFAIC-UHFFFAOYSA-N 2,4-dimethylthiolane 1,1-dioxide Chemical compound CC1CC(C)S(=O)(=O)C1 WKFQMDFSDQFAIC-UHFFFAOYSA-N 0.000 description 1
- XKZQKPRCPNGNFR-UHFFFAOYSA-N 2-(3-hydroxyphenyl)phenol Chemical class OC1=CC=CC(C=2C(=CC=CC=2)O)=C1 XKZQKPRCPNGNFR-UHFFFAOYSA-N 0.000 description 1
- WCWCBLDWXBFHHT-UHFFFAOYSA-N 2-amino-3-benzylphenol Chemical class NC1=C(O)C=CC=C1CC1=CC=CC=C1 WCWCBLDWXBFHHT-UHFFFAOYSA-N 0.000 description 1
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical class NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 description 1
- PPDFQRAASCRJAH-UHFFFAOYSA-N 2-methylthiolane 1,1-dioxide Chemical compound CC1CCCS1(=O)=O PPDFQRAASCRJAH-UHFFFAOYSA-N 0.000 description 1
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 1
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000754798 Calophyllum brasiliense Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
- KEQFTVQCIQJIQW-UHFFFAOYSA-N N-Phenyl-2-naphthylamine Chemical compound C=1C=C2C=CC=CC2=CC=1NC1=CC=CC=C1 KEQFTVQCIQJIQW-UHFFFAOYSA-N 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000012164 animal wax Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- BUSBFZWLPXDYIC-UHFFFAOYSA-N arsonic acid Chemical class O[AsH](O)=O BUSBFZWLPXDYIC-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 159000000009 barium salts Chemical class 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 150000001559 benzoic acids Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 235000013844 butane Nutrition 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- NSAODVHAXBZWGW-UHFFFAOYSA-N cadmium silver Chemical compound [Ag].[Cd] NSAODVHAXBZWGW-UHFFFAOYSA-N 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 239000002385 cottonseed oil Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000010730 cutting oil Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- CJYBKFFVXWWBMY-UHFFFAOYSA-N dodecyl 2-hydroxybenzoate Chemical compound CCCCCCCCCCCCOC(=O)C1=CC=CC=C1O CJYBKFFVXWWBMY-UHFFFAOYSA-N 0.000 description 1
- 239000010735 electrical insulating oil Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010685 fatty oil Substances 0.000 description 1
- 235000021323 fish oil Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229960002523 mercuric chloride Drugs 0.000 description 1
- 150000002731 mercury compounds Chemical class 0.000 description 1
- LWJROJCJINYWOX-UHFFFAOYSA-L mercury dichloride Chemical compound Cl[Hg]Cl LWJROJCJINYWOX-UHFFFAOYSA-L 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 125000004805 propylene group Chemical class [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011369 resultant mixture Substances 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 150000003470 sulfuric acid monoesters Chemical class 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 150000003582 thiophosphoric acids Chemical class 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000010723 turbine oil Substances 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
- C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
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Definitions
- This invention relates to sulfur-containing additives used to produce improved lubricants and stabilized organic compositions, to methods of preparing concentrates of naturally-occurring sulfur-containing additives for lubricating oils and greases, and to improved methods of inhibiting oxidative decomposition and lubricating internal combustion engines, particularly those containing corrosion-i5ensitive alloy bearings.
- the anti-corrosive and anti-oxidant properties of the desirable natural petroleum sulfur compounds are associated with the availability or activity of the sulfur in them. If the compounds or mixtures thereof, such as those obtained from petroleum by the hereinafter described methods have low sulfur availabilities, they are themselves'substantially non-corrosive to bearing surfaces but may fail to inhibit other types of corrosion. If, however, their sulfur availability is above a certain minimum, they will inhibit against both bearing corrosion and oxidative decomposition and may also contribute other valuable properties to the lubrieating oil to which they are added. Some of these additives may produce a brown or colored film on metal bearing surfaces in engine operation.
- this discoloration of copper surfaces may be substantially absent, but the anti-corrosive and anti-catalytic properties which the sulfur compounds contribute to the lubrieating oil are still prominent.
- Some of these sulfurcompositions e. g. the Utanol rafiinates
- the Utanol rafiinates also possess material anti-wear properties and/or the ability to enhance or prolong the anti-wear propriod of time, here taken at 16 hours.
- the copper sulfide formed is then determined quantitatively as by oxidizing the sulfide with bromine and precipitating the resultant sulfate with barium chloride.
- Fractions or concentrates of active sulfur com.. pounds may be obtained by various methods from various high sulfur petroleum crudes which contain them. In most crudes, the concentration of these compounds is quite low, and special methods (which are described later) are required in order to recover them in relatively high concentration, so that they may be added to refined lubricating oils in eifective amounts without materially changing the desirable properties of the latter. As a rule, it is poor practice to add to a well refined lubricating oil more than about of any addition agent.
- the effective amounts of sulfur which must be added to various refined lubricating oils in the form of active sulfur compounds usually are on the order of 0.1% to 0.3% by weight of refined oil, although quantities of between 0.02% and 1% may be useful. In a semiplastic composition such as a grease, higher amounts may be employed. Therefore, it is desirable, if not essential, that the. sulfur content of a concentrate of active compounds be at least 2% and preferably 5% or higher.
- crudes which contain the active sulfur compounds in concentration sufllclent to recover them in relatively concentrated form are of highly asphaltic nature such as certain California (particularly Mount Rose, Coalinga, Santa Maria) and Venezuelan crudes.
- Utanol is an asphaltic petroleum crude obtained from snallow wells in the Great Salt Lake area and southern Idaho. The oily fraction separated from this material is known as Utah on.
- Utanol varies in sulfur content from about 10% to 1.5%, has a specfic gravity of about 1.0 to 1.1, a saponification number of around 10 to 20, naphtha msoluoles of 10% to 15%. and contains about 40% to 10% asphalt as determined by preclpitation with about 0' volumes of n-butane at 60 to 11500" C.
- the crude is first de-asphalted by any of the standard de-asphalting methods. This may be achieved by asphalt precipitation or distillation, or both.
- the precipitation method is preferred because of the extremely high asphalt content of the Utanol which may interfere with the proper distillation and result in cracking of the asphalt and the inclusion of harmful cracked material in the distillate.
- the precipitation may be carried out by mixing the Utanol with several volumes of a liquid light hydrocarbon oil comprising predominantly or consisting of C: to C6 hydrocarbons, preferably at a temperature within about 75 to 100 C. of the critical temperature of the latter.
- a liquid light hydrocarbon oil comprising predominantly or consisting of C: to C6 hydrocarbons, preferably at a temperature within about 75 to 100 C. of the critical temperature of the latter.
- propane or propylenes at normal room temperature, butanes or butylenes at temperatures of 60 C. or above are well suited.
- Dissolving in benzene and precipitating with isopentane also proved successful.
- the crude may be dissolved in a liquid 04 to Cu hydrocarbon, naphtha. light kerosene, etc., and gaseous methane. ethane, nat.. ural gas, propane, fuel gas.
- water gas, CO, CO: or other cases may be introduced at high pressures to effect or complete the asphalt precipitation.
- selective so-called naphthenlc solvents may be present.
- naphthenlc solvents such as liquid furtural, nitrobenzene, beta,beta'-dichlor-diethyl ether. phenol, cresylic acids.
- the crude oil contains relativelyv low boiling components, as gasoline, kerosene, etc., they may be flashed from the crude prior to the precipitation or else may be separated later by fractional distillation of the deasphalted rafiinate oil.
- the supernatant liquid layer 1. e. the raflinate phase resulting from asphalt precipitation and containing the desired oil, is now separated from the precipitated asphalt. This oil must be further refined to reduce its lacquer-imparting tenden cies.
- the second refining treatment may be carried out in the presence or absence of the light hydrocarbon liquid employed in the precipitation; generally its presence may be helpful in the second step.
- the undesirable components, if any (which may be in the form of sludge, extract, etc), produced in the second refining treatment, are now separated.
- Solvent, if present, is removed in the usual manner as by distillation or washing with water or wash solvent, and the recovered-high sulfur oil that the specific dispersion be below about 160,
- the color may be an indication if taken together with the specific dispersion. Preferably, the color should be better than 6 (A. S. T. M. or National Petroleum Association Scale).
- Diameters of the wear scars worn on the three balls forming the base of the pyramid are then measured, and the average Oxidation tests were made with the same oil to determine the time required for the absorption of 1800 cc. of oxygen by 100 g. of oil in the presence of 1 cm. of copper surface/gram of oil at 150 C.
- the following data are typical: Hours Oil No. 1 (as above) 9.3 011 No. 2 (as above) 48 1
- This Utanol raifinate was also tested in the Thrust Bearing Corrosion test, referred to earlier, employing. a compounded heavy dutytruck and bus or Diesel lubricating oil.
- Additive radinate NJ relatively high specific dispersion or content of aromatics, the former often being considerably above 160, unless the solvent extraction and additional treatment preparatory to the solventextraction was very drastic. If the specific dispersion of the sulfur concentrate is above about 145, the concentrate may again be solvent-extracted or sulfuric acid treated, etc., to further reduce its 'aromaticity and specific dispersion to below about 140 in order to produce an addition agent for lubricating oils which has the least lacquer imparting tendencies.
- oils having a relatively low sulfur content may display a ratio of aromatics to sulfur that is higher, for example, than with Utanols, it is necessary to first remove from these oils some of the aromatics, as by selective solvent extraction with a naphthenic" solvent of the type described earlier, and if necessary augment this treatment with others such as sulfuric acid treatment.
- crudes relatively low in asphalt and aromatic content do not show the desired concentration of the sulfur compounds by the removal of their smaller amounts of undesirable constituents.
- the sulfur components can be concentrated by methods such as the following:
- the acetic acid may be distilled ofl and the mercury then released from the oil, for example, by heating say to C. with dilute acid (e. g. 2 vols. of 15% HCl) or by saturating with Has, the oil then being diluted with isopentane or other suitable solvent, water-washed, dried and clay-treated before removal of solvent.
- dilute acid e. g. 2 vols. of 15% HCl
- Has e.g. 2 vols. of 15% HCl
- Run number I II 111 Weight of oil used, gms e20 901 738 No. of dumps of reagent 3 3 3 Volume of acetic acid, mls... i190 216 Volume of HgAc; plus acetic acid,
- Extract from Run No. II was incorporated in white oil to the extent of 3%. This increased the time required for 100 g. to absorb 1800 ml. of oxygen from less than 2 to 236 hours. Corresponding extracts obtained at higher (e. g. reflux) temperatures were considerably less effective.
- any mercury salt particularly the mercuric salts soluble in acetic acid such as the oxalate, carbonate, chloride, sulfate, etc. or their mixtures, may be employed in like manner as the mercuric acetate, since these salts will give mercuric acetate in the acetic acid solution.
- the solubility of the acetate is considerably greater than for the other salts, hence it is generally more advantageous to start with the mercuric acetate.
- the mercury salts are definitely superior for this purpose as shown by the foregoing data.
- compositions possessing the required amount of available or reactive sulfur may also be incorporated advantageously in extreme pressure lubricants, cutting oils, roll oils, wire drawing lubricants, greases, hypoid gear lubricants, etc. They may also be used to impart anti-wear and/or anti-oxidant properties to lubricants not necessarily subject to high pres sure, such as turbine oil, refrigerator oil, lubricants for bearings, in particular, modern alloy bearings comprising cadmium-silver, cadmiumnickel, copper-lead, high lead alloys, as Well as I Babbit metal, and the like.
- the lubricating media also need not be derived in whole or in part from mineral oil but may consist in whole or part of vegetable or animal lubricants such as palm oil, cottonseed oil, fish oil, animal wax, phosphatides, etc., as well as the so-called synthetic lubricants (e. g. polymers of olefins derived from cracked wax).
- synthetic lubricants e. g. polymers of olefins derived from cracked wax.
- such additives may be incorporated advantageously in organic substances not intended for use as lubricants at all, such as gasoline, kerosene, spra oil, medicinal oil, transformer or electrical insulating oil, cleaning fluid, synthetic or natural rubber, Diesel fuel, photographic developers, etc.
- anti-oxidants as additives for coating materials such as asphalt, resins, oils, waxes, varnish, insulating or moisture-protective substances such as oiled or waxed" paper, etc.
- plastic or semi-plastic vehicles may also contain, for example, antirusting agents and be applied to metal surfaces to provide a corrosion-resistant coating.
- oxidation inhibited adhesive coatings may be applied to wood, paper, cardboard, felt, stone, laminated glass, fabric. concrete, plastic compositions, Transite board, etc., by such methods as roller coating, dipping. brushing, spraying and the like.
- sulfur compounds of this invention When the sulfur compounds of this invention are intended for addiiton to lubricating oils, they or the concentrates which contain them should have boiling temperatures above gas oil range and preferably within or above lubricating oil range.
- These compounds may also be advantageously 10 used in connection with other additives in lubricating media, for example, detergents formed from the oil-soluble salts of various bases with detergent forming acids.
- bases include metallic as well as organic bases.
- Metallic bases include those of the alkali metals, as well as Cu, Mg, Ca, Sr, Ba, Zn, Cd, Al, Sn, Pb, Cr, Mn, Fe, Ni, Co, etc.
- Organic bases include various nitrogen bases as primary, secondary, tertiary and quaternary amines.
- detergent forming acids are the various fatty acids of, say, 10 to 30 carbon atoms,
- wool fat acids paraffin wax acids (produced by oxidation of paraffln wax), chlorinated fatty acids, aromatic carboxylic acids including aryl fatty acids, aryl hydroxy fatty acids, paraffin wax benzoic acids, various alkyl salicyclic acids, phthalic acid mono esters, aromatic keto acids, aromatic ether acids; diphenols as di-(alkyl phenol) sulfides and disulfides, methylen bis alkylphenols; sulfonic acids such as may be produced by treatment of alkyl aromatic hydrocarbons or high boiling petroleum oils with sulfuric acid; sulfuric acid mono esters; phosphoric acid mono and di-esters, including the corresponding thiophosphoric acids; phosphonic and arsonic acids, etc.
- Non-metallic detergents include compounds such as the phosphatides (e. g. lecithin), certain fatty oils as rapeseed oils, voltolized fatty or 1 mineral oils.
- alkali earth phosphate di-esters include the thiophosphate di-esters; the alkali earth diphenolates. specifically the calcium and barium salts of diphenol mono and poly sulfides; etc.
- Our sulfur additives may also be used in association with other anti-oxidants, for example alkyl phenols such as 2.4.6-trimethylphenol,
- pentamethylphenol 2.4 dimethyl 6 tertiarybutyluhenol, 2.4-dimethy1-G-octylphenol, 2.6-ditertiary-butyli-methylphenol, 2 4,6-tri-tertiarybutylphenol, etc.; amino phenols as benzyl amino phenols; amines such as dibutylphen'ylenediamine, diphenylamine, phenyl-alpha-naphthylamine, phenyl-beta-naphthylamine, dinaphthyl amines; etc.
- corrosion inhibitors may also be present such as dicarboxylic acids of 16 and more carbon atoms, alkali metal and alkali earth salts of sulfonic acids and fatty acids, etc.
- additives may be present in a lubricating oil or grease such a blooming agents, anti-foaming agents, viscosity index improvers. etc.
- a high sulfur asphaltic crude such as raw Utanol may be added to a crude petroleum, for example a topped crude suitable for the manufacture of lubricants, and the mixture then subrafllnate with a mercury salt under temperature conditions to produce a mercury salt-sulfur compound complex and breaking the resulting mercury salt-sulfur compound complex to regenerate and recover the extracted sulfur compounds.
- a process for obtaining a sulfur-containing fraction possessing antioxidant and other valuable pronerties comprises extracting a substantially parafl'inic lubricating oil raiflnate with a mercury salt under conditions of atmosphere and temperature to substantially avoid any oxidation and to produce a mercury salt-sulfur compound complex. and breaking the resulting complex to regenerate and recover the extracted compounds.
- a process for obtaining a sulfur-containing fraction possessing antioxidant and other valuable properties comprises extracting a substantially paraiflnic lubricating oil rafllnate with a mercury salt at a temperature below about 20 C. and breaking the resulting sulfur complex to recover the extracted sulfur compounds.
- a process for obtaining a sulfur-containing fraction possessing antioxidant and other valuable properties comprises extreating a substantially parafllnic lubricating oil raillnate with glacial acetic acid saturated with mercuric acetate and breaking the resulting sulfur complex to recover the extracted sulfur compounds.
- a process for obtaining a sulfur-containing fraction possessing antioxidant and other valuable properties comprises extracting a substantially paramnic lubricating oil rafllnate with a mercury salt at a temperature not above about 50 0.. thereby producing a mercury salt-sulfur compound complex, and breaking the resulting complex to regenerate and recover the extracted compounds.
- a process for obtaining a composition possessing antioxidant and other valuable properties which proces comprises extracting a substantially parafllnic lubricating oil rafllnate with a mercury salt at a temperature not above about 50 C., thereby producing a mercury salt addition compound. and breaking the resulting addition compound to regenerate and recover the extracted compounds.
- a process for obtaining a composition possessing antioxidant and. other valuable properties comprises treating a substantially parafllnic lubricating oil ramnate with glacial acetic acid saturated with'merouric acetate, thereby producing a mercuric acetate addition compound, and breaking the resulting addition compound to regenerate and recover the extracted compounds.
- An organic composition comprising a predominant amount of an organic substance which is unstable against oxidative deterioration and which is responsive to sulfur-containing antioxidants. and an added beneflciating amount of natural-occurring sulfur-containing compounds from petroleum oil possessing antioxidant and other valuable properties pre ared by the process which comprises extracting a substantially parafllnic lubricating oil ramnate with a mercury salt under temperature conditions to produce a mercury salt-sulfur compound complex and breaking the resulting mercury salt-sulfur compound complex to regenerate and recover therefrom the extracted compounds.
- An organic composition comprising a predominant amount oi. a mixture 01' hydrocarbons,
- An oleaginous composition comprising a predominant amount of an oleaginous material which is unstable against oxidative deterioration and which is responsive to sulfur-containing antioxidants, and an added antioxidant amount of a concentrate of natural-occurring sulfur-containing compounds from petroleum oil possessing antioxidant and other valuable properties pre-- pared by the process which comprises extracting a substantially paraii'inic lubricating oil raiiinate with a mercury alt under temperature conditions to produce a mercury salt-sulfur compound complex and breaking the resulting complex to regenerate and recover the extracted compound.
- a lubricant comprising a predominant amount of a refined mineral oil, a small added amount of a normally corrosive detergent, and an added small amount sufllcient to render the resultant mixture substantially non-corrosive of a concentrate of natural-occurring sulfur-containing compounds from petroleum oil possessing antioxidant and other valuable properties prepared by the process which com-prises extracting a substantially paraiflnic lubricating oil rafflnate with a mercury salt under temperature conditions to produce a mercury salt-sulfur compound com- ,plex and breaking the resulting complex to regenerate and recover the extracted compound.
- a lubricant comprising a predominant amount of a refined mineral oil and characterized by a normal tendency to corrode metal bearing surfaces, and an added corrosion-inhibiting amount or a concentrate of natural-occurring sulfur-containing compounds from petroleum oil possessing anticorrosive and other valuable properties prepared by the process which comprises extracting a substantially parafllnic lubricating oil rafllnate with a mercury salt under temperature conditions to produce a mercury salt-sulfur compound complex and breaking the resulting complex to regenerate and recover the extracted compound.
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Description
Patented July 30 lgdfi 4 UNITED STATES PATENT OFFICE Paul R. van
Ess, Berkeley, Forrest J. Watson, Oakland, and Gary M.
Whitney, Piedmont,
Calif., assignors to Shell Development Company, San Francisco, Calil., a corporation of Delaware No Drawing. Application July 28, 1943, Serial No. 496,678
12 Claims. 1
This invention relates to sulfur-containing additives used to produce improved lubricants and stabilized organic compositions, to methods of preparing concentrates of naturally-occurring sulfur-containing additives for lubricating oils and greases, and to improved methods of inhibiting oxidative decomposition and lubricating internal combustion engines, particularly those containing corrosion-i5ensitive alloy bearings.
It was quite generally; believed heretofore that relatively high boiling sulfur compounds naturally occurring in petroleum crudes were good inhibitors for lubricating oils, imparting to them anti-corrosive properties and oxidation stability. As a result, several high sulfur-content lubricating oils have appeared on the marketfor which certain superiorities are claimed. However, in
many cases such claims cannot be verified by laboratory and engine tests. Moreover, it was found that as a rule these high sulfur lubricating oils have a very strong and dangerous tendency to form lacquer, sludge and carbon on pistons and piston rings, particularly in high temperature operation.
It has now been discovered however that among the naturally-occurring sulfur compounds in petroleum oils there are beneficially active as well as inactive and even detrimental varieties and that the beneficially active compounds can be extracted from the oils in which they occur to produce concentrates of relatively high non-corrosive sulfur content, which, when added to well refined lubricating oils, impart to them good oxidation stability and anti-corrosive properties without materially increasing their tendency to form lacquer, sludge and carbon.
It is accordingly an object of this'invention to produce from crude petroleum, sulfur concentrates which, when added to refined lubricating oils and the like, act as oxidation and corrosion inhibitors without materially increasing the lac-. quering and sludge depositing tendency of the base oil. A further purpose is to provide lubricating compositions having decreased tendencies to attack modern alloy bearings. Another object is to obtain superior aviation and Diesel engine, heavy duty lubricating oils. A still further purpose is to produce novel sulfur-containing petroleum fractions which contribute valuable anticorrosive, anti-oxidant, anti-wear, high film strength and/or other advantageous properties to organic compositions in which they are incorporated. Other objects will be apparent from the following description. I
It has been determined that the anti-corrosive and anti-oxidant properties of the desirable natural petroleum sulfur compounds are associated with the availability or activity of the sulfur in them. If the compounds or mixtures thereof, such as those obtained from petroleum by the hereinafter described methods have low sulfur availabilities, they are themselves'substantially non-corrosive to bearing surfaces but may fail to inhibit other types of corrosion. If, however, their sulfur availability is above a certain minimum, they will inhibit against both bearing corrosion and oxidative decomposition and may also contribute other valuable properties to the lubrieating oil to which they are added. Some of these additives may produce a brown or colored film on metal bearing surfaces in engine operation. With others, (notably the hereafter described Utanol rafilnates) this discoloration of copper surfaces may be substantially absent, but the anti-corrosive and anti-catalytic properties which the sulfur compounds contribute to the lubrieating oil are still prominent. Some of these sulfurcompositions (e. g. the Utanol rafiinates) also possess material anti-wear properties and/or the ability to enhance or prolong the anti-wear propriod of time, here taken at 16 hours. The copper sulfide formed is then determined quantitatively as by oxidizing the sulfide with bromine and precipitating the resultant sulfate with barium chloride. If the percent of sulfur reacted is plotted against the reaction temperatures for various sulfur compounds or high sulfur content oils, a family of curves is obtained which at relatively low temperatures are quite close together. However, at temperatures of say 300 C. the curves separate widely and the availability of the sulfur as determined at this temperature gives a reasonable correlation for various petroleum derived sulfur compounds with their inhibiting eflicacy when incorporated in refined lubricating oils. At this particular temperature, compounds having sulfur availabilities below about 15% (for example those in West Texas high-sulfur lubricating oil extracts) are of little if any effect, while certain other natural petroleum sulfur compounds of higher availability, 1. e. above about 15% and preferably above about 20% (for example, those in Utanol rafiinates) are highly effective.
The availability of these sulfur compounds has been correlated with their anti-corrosiveness in lubricating oils, for example by determining the comparative weight losses of copper-lead bearings subjected to the action of lubricating oils containing standard amounts of these sulfur additives plus a commonly used detergent, which, although contributing other valuable properties, causes or increases corrosiveness of the lubricating oil. Thus various blended oils have been tested and compared by a procedure known as the Thrust Bearing Corrosion test, which was described in the National Petroleum News, September 17, 1941, pp. R 294-296.
Fractions or concentrates of active sulfur com.. pounds may be obtained by various methods from various high sulfur petroleum crudes which contain them. In most crudes, the concentration of these compounds is quite low, and special methods (which are described later) are required in order to recover them in relatively high concentration, so that they may be added to refined lubricating oils in eifective amounts without materially changing the desirable properties of the latter. As a rule, it is poor practice to add to a well refined lubricating oil more than about of any addition agent. The effective amounts of sulfur which must be added to various refined lubricating oils in the form of active sulfur compounds usually are on the order of 0.1% to 0.3% by weight of refined oil, although quantities of between 0.02% and 1% may be useful. In a semiplastic composition such as a grease, higher amounts may be employed. Therefore, it is desirable, if not essential, that the. sulfur content of a concentrate of active compounds be at least 2% and preferably 5% or higher.
As previously indicated, the indiscriminate addition of natural petroleum sulfur compounds tends to cause an increase in lacquering and sludge depositing tendencies of the blended oils. This however can be minimized by properly refining either the oil from which the active high sulfur concentrates are produced or the concentrates themselves before they are added to lubricating oils. Such refinement includes substantial elimination of asphaltic materials and a treatment capable of separating aromatic from nonaromatic hydrocarbons, for example, by precipitation with gas, such as methane under high pressure as described by Pilat in U. 8. Patent 2,315,131, sulfuric acid treatment, solvent extraction, selective hydrogenation, etc., or a combination of such treatments, preferably under conditions not to reduce the sulfur content of the concentrate excessively, i, a. so that not more than about /3 of the total sulfur content is lost. In other Words. our concentrates are raifinates, raiilnates as commonly understood in the petroleum industry being relatively parafilnic petroleum fractions from which naturally associated aromatics have been removed. Whether the sludging tendency is the result of over-activity of certain sulfur compounds (as might well be) or is due to the presence of other associated compounds, is not known at this time. However, this is immaterial, as it is sufficient that a treatment adapted to remove aromatics from hydrocarbon mixtures will achieve the desired result.
In general, crudes which contain the active sulfur compounds in concentration sufllclent to recover them in relatively concentrated form. are of highly asphaltic nature such as certain California (particularly Mount Rose, Coalinga, Santa Maria) and Venezuelan crudes.
Outstanding is an oil known to the trade as Utanol" which is an asphaltic petroleum crude obtained from snallow wells in the Great Salt Lake area and southern Idaho. The oily fraction separated from this material is known as Utah on. Utanol varies in sulfur content from about 10% to 1.5%, has a specfic gravity of about 1.0 to 1.1, a saponification number of around 10 to 20, naphtha msoluoles of 10% to 15%. and contains about 40% to 10% asphalt as determined by preclpitation with about 0' volumes of n-butane at 60 to 11500" C. It has no appreciable content of pheno Methods for obtaining an oil fraction having the desired concentration of active sulfur compounds from crudes having a sulfur content above 5%, such as Utanol, are relatively simple. One such method specifically applied to Utanol is as follows:
The crude is first de-asphalted by any of the standard de-asphalting methods. This may be achieved by asphalt precipitation or distillation, or both. The precipitation method is preferred because of the extremely high asphalt content of the Utanol which may interfere with the proper distillation and result in cracking of the asphalt and the inclusion of harmful cracked material in the distillate.
The precipitation may be carried out by mixing the Utanol with several volumes of a liquid light hydrocarbon oil comprising predominantly or consisting of C: to C6 hydrocarbons, preferably at a temperature within about 75 to 100 C. of the critical temperature of the latter. Thus propane or propylenes at normal room temperature, butanes or butylenes at temperatures of 60 C. or above are well suited. Dissolving in benzene and precipitating with isopentane also proved successful. If desired. the crude may be dissolved in a liquid 04 to Cu hydrocarbon, naphtha. light kerosene, etc., and gaseous methane. ethane, nat.. ural gas, propane, fuel gas. water gas, CO, CO: or other cases may be introduced at high pressures to effect or complete the asphalt precipitation. Moreover, selective so-called naphthenlc solvents may be present. such as liquid furtural, nitrobenzene, beta,beta'-dichlor-diethyl ether. phenol, cresylic acids. aniline, methylsulfolane, dimethylsulfolane. or a large number of others or their mixtures.
If the crude oil contains relativelyv low boiling components, as gasoline, kerosene, etc., they may be flashed from the crude prior to the precipitation or else may be separated later by fractional distillation of the deasphalted rafiinate oil.
The supernatant liquid layer, 1. e. the raflinate phase resulting from asphalt precipitation and containing the desired oil, is now separated from the precipitated asphalt. This oil must be further refined to reduce its lacquer-imparting tenden cies.
Depending on the conditions of the precipitation, the nature of the solvents employed and the nature of the crude itself, one of several ways may be followed. Obviously the more drastic the precipitation conditions are, the less drastic need be the second treating step which involves (as previously indicated) a treatment adapted to remove aromatic hydrocarbons. Solvent extraction may be employed with any one of the well known selective naphthenic" solvents previously mentioned. Treatment with strong, i. e. 93 to 100% sulfuric acid is usually desirable and effective. Amounts of sulfuric acid ranging anywhere from 5 to 100 pounds per barrel of the rafiinate oil may be employed.
Several treatments may be combined and the second refining treatment may be carried out in the presence or absence of the light hydrocarbon liquid employed in the precipitation; generally its presence may be helpful in the second step. The undesirable components, if any (which may be in the form of sludge, extract, etc), produced in the second refining treatment, are now separated. Solvent, if present, is removed in the usual manner as by distillation or washing with water or wash solvent, and the recovered-high sulfur oil that the specific dispersion be below about 160,
more preferably below about 140 or 145. Also, the color may be an indication if taken together with the specific dispersion. Preferably, the color should be better than 6 (A. S. T. M. or National Petroleum Association Scale).
Samples of treated Utanol railinate oils from decrease wear Ability of Utanol raillnates to was determined on a. Multiple-Four Bali machine similarin principle to the Boerlage apparatus described in themagazine Engineering, volume 136, July 14, 1933. This apparatus comprises four steel balls arranged in pyramid formation. The top ball is rotated by a spindle against the three bottom balls which are clamped in a stationary ball holder. All balls are immersed in the oil to be tested. The tests are run for two hours at ,700 R.- P. M. under a '7 kg. loadfand at a controlled temperature of 130 C. Diameters of the wear scars worn on the three balls forming the base of the pyramid are then measured, and the average Oxidation tests were made with the same oil to determine the time required for the absorption of 1800 cc. of oxygen by 100 g. of oil in the presence of 1 cm. of copper surface/gram of oil at 150 C. The following data are typical: Hours Oil No. 1 (as above) 9.3 011 No. 2 (as above) 48 1 This Utanol raifinate was also tested in the Thrust Bearing Corrosion test, referred to earlier, employing. a compounded heavy dutytruck and bus or Diesel lubricating oil. It contained ineach case 1 of the magnesium salt of lauryl salicylate which has been a widely used lubricating oil detergent. but which. although otherwise beneficial, imparts corrosive properties to the lubricant. In 20 hour tests at 125 lbs. thrust and 2400 R. P. M. with this oil, the copper-lead bearings showed a weight loss at 130 C. of 15 mg./cm. When tested with this same oil, to which had'been added a clay treated Utanol Pilat raflinate, AS=0.10%, the bearings showed no weight loss at 160 C.
v Chevrolet engine tests using procedure L-4243 of the Cooperative LubricantsTest Program were also made using a corrosive S, A. E. reference oil.
50 Results were as follows:
Used oil properties Varnish Sludge ga g's:
mung mung mgJcm. 1 Sa l). No. Neut. No.
, I mg. OH/g. mg. KOH/g. v
Base oil 105 73 84. o 22. 2 91's Base oil Utanol rafilnate AS=0.107. 106. 5 5 f 6 Base oil Utanol raffinate AS=0.1 109. 5 72 2i. 7 26.8 4. 2 Base oil Utanol raifinate AS=0.30%. 104. 5 i 73 3. 2 9. 98 2. 8
diflerent batches had the following properties:
General one acid treated Piiat range railinate Gravity 0. 98-1. 0 0. 9880 Viscosity at 100 F... 950-1400 1,018 Viscosity at 210 F. 34-39 34. 7 Viscosity index.. 40-55 53 Specific dispersion 130-145 132 Color 4-7. 5 i 1 4% Saponiflcation number, mg.KOH/" 0-8 1 0. 9
A clay treated Ultimate analysis: .Pilat raflinair Carbon per cent weight I 76. 27 I Hydrogen .do 10.
Sulfur ..do.. 12. 7- V 11.9 Nitrogen... 0.14 0.06
The action of a Utanol-railina'te in increasing I the efilciency of ananti-Wear agent, the calcium salt of methylene bis p-i'sooctylphenol, may be seen from the following data of piston ringweightloss in a CFR-Diesel engine. Test conditions:'-
1400 P. M.;'load, 68 155.1111? brake mean effective pressure; jacket-temp.- C.; oil tempera-J compression ratio 1631; 4 7 =cetane" egan P weigh t loss, mg.
Additive radinate NJ relatively high specific dispersion or content of aromatics, the former often being considerably above 160, unless the solvent extraction and additional treatment preparatory to the solventextraction was very drastic. If the specific dispersion of the sulfur concentrate is above about 145, the concentrate may again be solvent-extracted or sulfuric acid treated, etc., to further reduce its 'aromaticity and specific dispersion to below about 140 in order to produce an addition agent for lubricating oils which has the least lacquer imparting tendencies.
In the table below, a comparison is made of the eflect of the several sulfur concentrates on the oxidation stability (Domte type oxygen absorption apparatus at 150 C.) in the presence of 1 square centimeter of copper per gram of oil of an S. A. E. 60 lubricating oil when added thereto in amounts to raise the sulfur content by 0.1%:
Bp e c. die; pc on o sulfur eonfg Source of petroleum material Method of obtaining sulfur cone. "mm" m M00 mxme I. 011
Hours None 0. 2 Utanol Asphalt precipitation-acid treating 132 47, 7 Mt. Poso lubricating distillate, furiural railinate, 55 V. I Mercurlc acetate in acetic acid 120 52,0 1 m n lubricating distillate, acid treated iurtural railinate, SbClr-AlCln 143 32, 1 Mt. Peso lubricating distillate, iurfural ramnate, 65 V. I Aluminum chloride B 21, a West Texas distill Acid treat-i-extractlon with HgAer in HA 19d 13 D0 Duosol extration followed by acid treat 200+ 0.8
nation, of paraflln wax), bis-(methylene aryl or alkaryl sulfides), etc.
As indicated before, when starting with crudes or fractions thereof having sulfur contents materially below about 5%, such as California and Venezuelan oils, different methods for recovering the active sulfur compounds must be employed than that described for Utanol. Since oils having a relatively low sulfur content may display a ratio of aromatics to sulfur that is higher, for example, than with Utanols, it is necessary to first remove from these oils some of the aromatics, as by selective solvent extraction with a naphthenic" solvent of the type described earlier, and if necessary augment this treatment with others such as sulfuric acid treatment. Likewise, crudes relatively low in asphalt and aromatic content do not show the desired concentration of the sulfur compounds by the removal of their smaller amounts of undesirable constituents. The sulfur components, however, can be concentrated by methods such as the following:
Extraction with aceticacid containing a soluble mercury salt such as mercuric acetate, mercuric chloride, etc. to form a mercury complex extract which is then worked up to recover the extract oil and if necessary further refine the latter.
Extraction with a liquid mixture of SbCh and A101: to form a complex which may be separatedand decomposed to recover the oil.
Extraction with AlCh at temperatures between about 0 to 80 C. as described in U. S. Patent 2,309,337 to form a complex which may be decomposed to recover the oil.
All three of these extraction methods yield relatively dark' oils, even though the starting ramnate may have been of light color. Moreover, the
.SbCla-AICI: extraction, as well as the A101: extraction, tend to cause accumulation in the sulfur concentrate of whatever aromatics have been left over from the preceding solvent extraction, and therefore result in auliur concentrates of The method of concentrating sulfur compounds with the aid of mercuric acetate in acetic acid is described below in greater detail:
A sample of 50 V. 1. Mt. Poso furfural railinatc was first extracted with glacial acetic acid to remove nitrogen bases. Glacial acetic acid saturated with mercuric acetate was then added to the oil, with stirring, in the amounts shown in the table below. The mixture was allowed to settle and the lower layer drawn off. This extraction may be performed several times on a sample (as shown in the table) and the remaining oil then washed with acetic acid to remove the remaining mercury compounds. It is also advantageous to carryout the extraction in the presence of an inert, oxygen-excluding agent such as nitrogen or natural-gas which may be bubbled through the liquid to minimize oxidation. The extracts and acetic acid end-wash are then combined. The acetic acid may be distilled ofl and the mercury then released from the oil, for example, by heating say to C. with dilute acid (e. g. 2 vols. of 15% HCl) or by saturating with Has, the oil then being diluted with isopentane or other suitable solvent, water-washed, dried and clay-treated before removal of solvent.
The variables for several such runs are shown in the following table:
Run number I II 111 Weight of oil used, gms e20 901 738 No. of dumps of reagent 3 3 3 Volume of acetic acid, mls... i190 216 Volume of HgAc; plus acetic acid,
mls 485 060 540 Temperature of treatment, 0. 30 18 l 60 Tot treating time minutes 00 136 106 Wei ht per cent yield of extract (on P t liii ll l ll O I: 0 14 6; 0.16
er cen s urremaining o Per cent sulfur in extract oil (average) 8.00 8.88 8. ll
Extract from Run No. II was incorporated in white oil to the extent of 3%. This increased the time required for 100 g. to absorb 1800 ml. of oxygen from less than 2 to 236 hours. Corresponding extracts obtained at higher (e. g. reflux) temperatures were considerably less effective.
It has been found that when this mercuric acetate extraction of the oil is carried out at room temperature or lower (i. e. below about 20 C. and preferably near the melting point of acetic acid) the content of desirable sulfur constituents in the extract is greater than if the oil is refluxed or maintained at a higher temperature while treating with the mercury salt. In general, any mercury salt, particularly the mercuric salts soluble in acetic acid such as the oxalate, carbonate, chloride, sulfate, etc. or their mixtures, may be employed in like manner as the mercuric acetate, since these salts will give mercuric acetate in the acetic acid solution. The solubility of the acetate is considerably greater than for the other salts, hence it is generally more advantageous to start with the mercuric acetate. As compared with salts of other metals, the mercury salts are definitely superior for this purpose as shown by the foregoing data.
The herein described compositions possessing the required amount of available or reactive sulfur may also be incorporated advantageously in extreme pressure lubricants, cutting oils, roll oils, wire drawing lubricants, greases, hypoid gear lubricants, etc. They may also be used to impart anti-wear and/or anti-oxidant properties to lubricants not necessarily subject to high pres sure, such as turbine oil, refrigerator oil, lubricants for bearings, in particular, modern alloy bearings comprising cadmium-silver, cadmiumnickel, copper-lead, high lead alloys, as Well as I Babbit metal, and the like. The lubricating media also need not be derived in whole or in part from mineral oil but may consist in whole or part of vegetable or animal lubricants such as palm oil, cottonseed oil, fish oil, animal wax, phosphatides, etc., as well as the so-called synthetic lubricants (e. g. polymers of olefins derived from cracked wax). In addition, by reason of their antioxidant properties, such additives may be incorporated advantageously in organic substances not intended for use as lubricants at all, such as gasoline, kerosene, spra oil, medicinal oil, transformer or electrical insulating oil, cleaning fluid, synthetic or natural rubber, Diesel fuel, photographic developers, etc.
Particular reference may be made to the inclusion of the herein described anti-oxidants as additives for coating materials such as asphalt, resins, oils, waxes, varnish, insulating or moisture-protective substances such as oiled or waxed" paper, etc. Such plastic or semi-plastic vehicles may also contain, for example, antirusting agents and be applied to metal surfaces to provide a corrosion-resistant coating. Also such oxidation inhibited adhesive coatings may be applied to wood, paper, cardboard, felt, stone, laminated glass, fabric. concrete, plastic compositions, Transite board, etc., by such methods as roller coating, dipping. brushing, spraying and the like.
When the sulfur compounds of this invention are intended for addiiton to lubricating oils, they or the concentrates which contain them should have boiling temperatures above gas oil range and preferably within or above lubricating oil range.
These compounds may also be advantageously 10 used in connection with other additives in lubricating media, for example, detergents formed from the oil-soluble salts of various bases with detergent forming acids. Such bases include metallic as well as organic bases. Metallic bases include those of the alkali metals, as well as Cu, Mg, Ca, Sr, Ba, Zn, Cd, Al, Sn, Pb, Cr, Mn, Fe, Ni, Co, etc. Organic bases include various nitrogen bases as primary, secondary, tertiary and quaternary amines.
Examples of detergent forming acids are the various fatty acids of, say, 10 to 30 carbon atoms,
wool fat acids, paraffin wax acids (produced by oxidation of paraffln wax), chlorinated fatty acids, aromatic carboxylic acids including aryl fatty acids, aryl hydroxy fatty acids, paraffin wax benzoic acids, various alkyl salicyclic acids, phthalic acid mono esters, aromatic keto acids, aromatic ether acids; diphenols as di-(alkyl phenol) sulfides and disulfides, methylen bis alkylphenols; sulfonic acids such as may be produced by treatment of alkyl aromatic hydrocarbons or high boiling petroleum oils with sulfuric acid; sulfuric acid mono esters; phosphoric acid mono and di-esters, including the corresponding thiophosphoric acids; phosphonic and arsonic acids, etc.
Non-metallic detergents include compounds such as the phosphatides (e. g. lecithin), certain fatty oils as rapeseed oils, voltolized fatty or 1 mineral oils.
I Other detergents are the alkali earth phosphate di-esters. includ ng the thiophosphate di-esters; the alkali earth diphenolates. specifically the calcium and barium salts of diphenol mono and poly sulfides; etc.
Our sulfur additives may also be used in association with other anti-oxidants, for example alkyl phenols such as 2.4.6-trimethylphenol,
pentamethylphenol, 2.4 dimethyl 6 tertiarybutyluhenol, 2.4-dimethy1-G-octylphenol, 2.6-ditertiary-butyli-methylphenol, 2 4,6-tri-tertiarybutylphenol, etc.; amino phenols as benzyl amino phenols; amines such as dibutylphen'ylenediamine, diphenylamine, phenyl-alpha-naphthylamine, phenyl-beta-naphthylamine, dinaphthyl amines; etc.
Other corrosion inhibitors may also be present such as dicarboxylic acids of 16 and more carbon atoms, alkali metal and alkali earth salts of sulfonic acids and fatty acids, etc.
Likewise, other additives may be present in a lubricating oil or grease such a blooming agents, anti-foaming agents, viscosity index improvers. etc.
Instead of first producing the herein described additive and then adding it to a lubricating oil, a high sulfur asphaltic crude such as raw Utanol may be added to a crude petroleum, for example a topped crude suitable for the manufacture of lubricants, and the mixture then subrafllnate with a mercury salt under temperature conditions to produce a mercury salt-sulfur compound complex and breaking the resulting mercury salt-sulfur compound complex to regenerate and recover the extracted sulfur compounds.
2. A process for obtaining a sulfur-containing fraction possessing antioxidant and other valuable pronerties, which process comprises extracting a substantially parafl'inic lubricating oil raiflnate with a mercury salt under conditions of atmosphere and temperature to substantially avoid any oxidation and to produce a mercury salt-sulfur compound complex. and breaking the resulting complex to regenerate and recover the extracted compounds.
3. A process for obtaining a sulfur-containing fraction possessing antioxidant and other valuable properties, which process comprises extracting a substantially paraiflnic lubricating oil rafllnate with a mercury salt at a temperature below about 20 C. and breaking the resulting sulfur complex to recover the extracted sulfur compounds.
4. A process for obtaining a sulfur-containing fraction possessing antioxidant and other valuable properties. which process comprises extreating a substantially parafllnic lubricating oil raillnate with glacial acetic acid saturated with mercuric acetate and breaking the resulting sulfur complex to recover the extracted sulfur compounds.
5. A process for obtaining a sulfur-containing fraction possessing antioxidant and other valuable properties, which process comprises extracting a substantially paramnic lubricating oil rafllnate with a mercury salt at a temperature not above about 50 0.. thereby producing a mercury salt-sulfur compound complex, and breaking the resulting complex to regenerate and recover the extracted compounds.
6. A process for obtaining a composition possessing antioxidant and other valuable properties, which proces comprises extracting a substantially parafllnic lubricating oil rafllnate with a mercury salt at a temperature not above about 50 C., thereby producing a mercury salt addition compound. and breaking the resulting addition compound to regenerate and recover the extracted compounds.
7. A process for obtaining a composition possessing antioxidant and. other valuable properties, which process comprises treating a substantially parafllnic lubricating oil ramnate with glacial acetic acid saturated with'merouric acetate, thereby producing a mercuric acetate addition compound, and breaking the resulting addition compound to regenerate and recover the extracted compounds.
8. An organic composition comprising a predominant amount of an organic substance which is unstable against oxidative deterioration and which is responsive to sulfur-containing antioxidants. and an added beneflciating amount of natural-occurring sulfur-containing compounds from petroleum oil possessing antioxidant and other valuable properties pre ared by the process which comprises extracting a substantially parafllnic lubricating oil ramnate with a mercury salt under temperature conditions to produce a mercury salt-sulfur compound complex and breaking the resulting mercury salt-sulfur compound complex to regenerate and recover therefrom the extracted compounds.
9. An organic composition comprising a predominant amount oi. a mixture 01' hydrocarbons,
which mixture is unstable-against oxidative de-.
terioration and which is responsive to sulfur-containing antioxidants. and an added antioxidant amount of a concentrate oi! natural-occurring sulfur containing compounds from petroleum oil possessing antioxidant and other valuable properties prepared by the process which comprises extracting a substantially parafllnic lubricating oil raflinate with a mercury salt under temperature conditions to produce a mercury salt-sulfur compound complex and breaking the resulting complex to regenerate and recover the extracted compound.
10. An oleaginous composition comprising a predominant amount of an oleaginous material which is unstable against oxidative deterioration and which is responsive to sulfur-containing antioxidants, and an added antioxidant amount of a concentrate of natural-occurring sulfur-containing compounds from petroleum oil possessing antioxidant and other valuable properties pre-- pared by the process which comprises extracting a substantially paraii'inic lubricating oil raiiinate with a mercury alt under temperature conditions to produce a mercury salt-sulfur compound complex and breaking the resulting complex to regenerate and recover the extracted compound.
11. A lubricant comprising a predominant amount of a refined mineral oil, a small added amount of a normally corrosive detergent, and an added small amount sufllcient to render the resultant mixture substantially non-corrosive of a concentrate of natural-occurring sulfur-containing compounds from petroleum oil possessing antioxidant and other valuable properties prepared by the process which com-prises extracting a substantially paraiflnic lubricating oil rafflnate with a mercury salt under temperature conditions to produce a mercury salt-sulfur compound com- ,plex and breaking the resulting complex to regenerate and recover the extracted compound.
12. A lubricant comprising a predominant amount of a refined mineral oil and characterized by a normal tendency to corrode metal bearing surfaces, and an added corrosion-inhibiting amount or a concentrate of natural-occurring sulfur-containing compounds from petroleum oil possessing anticorrosive and other valuable properties prepared by the process which comprises extracting a substantially parafllnic lubricating oil rafllnate with a mercury salt under temperature conditions to produce a mercury salt-sulfur compound complex and breaking the resulting complex to regenerate and recover the extracted compound.
PAUL R. VAN ESS. FORREST J. WATSON. GARY M. WHITNEY.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US496678A US2404871A (en) | 1943-07-28 | 1943-07-28 | Lubricating compositions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US496678A US2404871A (en) | 1943-07-28 | 1943-07-28 | Lubricating compositions |
Publications (1)
Publication Number | Publication Date |
---|---|
US2404871A true US2404871A (en) | 1946-07-30 |
Family
ID=23973666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US496678A Expired - Lifetime US2404871A (en) | 1943-07-28 | 1943-07-28 | Lubricating compositions |
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US (1) | US2404871A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2508817A (en) * | 1947-04-18 | 1950-05-23 | Tide Water Associated Oil Comp | Sweetening light hydrocarbon oils |
US2623855A (en) * | 1947-12-02 | 1952-12-30 | Shell Dev | Lubricating compositions |
US2636862A (en) * | 1950-06-09 | 1953-04-28 | Shell Dev | Lubricant and hydraulic fluid compositions |
US2636861A (en) * | 1950-06-09 | 1953-04-28 | Shell Dev | Hydraulic fluid |
US2793982A (en) * | 1954-11-19 | 1957-05-28 | Pure Oil Co | Process for maintaining high oxidation stability in refining of lubricating oils |
US2926092A (en) * | 1955-12-08 | 1960-02-23 | A W Brickman | Antioxidant composition |
US20070096060A1 (en) * | 2005-10-27 | 2007-05-03 | The United States Of America As Represented By The Secretary Of The Navy | Oleaginous corrosion and mildew-inhibiting composition |
US20070096059A1 (en) * | 2005-10-27 | 2007-05-03 | El Sayed Arafat | Oleaginous corrosion resistant composition |
US20100294166A1 (en) * | 2005-10-27 | 2010-11-25 | Arafat El Sayed S | Oleaginous Corrosion-Resistant Coatings |
-
1943
- 1943-07-28 US US496678A patent/US2404871A/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2508817A (en) * | 1947-04-18 | 1950-05-23 | Tide Water Associated Oil Comp | Sweetening light hydrocarbon oils |
US2623855A (en) * | 1947-12-02 | 1952-12-30 | Shell Dev | Lubricating compositions |
US2636862A (en) * | 1950-06-09 | 1953-04-28 | Shell Dev | Lubricant and hydraulic fluid compositions |
US2636861A (en) * | 1950-06-09 | 1953-04-28 | Shell Dev | Hydraulic fluid |
US2793982A (en) * | 1954-11-19 | 1957-05-28 | Pure Oil Co | Process for maintaining high oxidation stability in refining of lubricating oils |
US2926092A (en) * | 1955-12-08 | 1960-02-23 | A W Brickman | Antioxidant composition |
US20070096060A1 (en) * | 2005-10-27 | 2007-05-03 | The United States Of America As Represented By The Secretary Of The Navy | Oleaginous corrosion and mildew-inhibiting composition |
US20070096059A1 (en) * | 2005-10-27 | 2007-05-03 | El Sayed Arafat | Oleaginous corrosion resistant composition |
US7776233B2 (en) * | 2005-10-27 | 2010-08-17 | The United States Of America As Represented By The Secretary Of The Navy | Oleaginous corrosion resistant composition |
US7820076B2 (en) * | 2005-10-27 | 2010-10-26 | The United States Of America As Represented By The Secretary Of The Navy | Oleaginous corrosion and mildew-inhibiting composition |
US20100294166A1 (en) * | 2005-10-27 | 2010-11-25 | Arafat El Sayed S | Oleaginous Corrosion-Resistant Coatings |
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