WO2015052558A1 - Compressor oil, and compressor oil additive composition - Google Patents
Compressor oil, and compressor oil additive composition Download PDFInfo
- Publication number
- WO2015052558A1 WO2015052558A1 PCT/IB2013/061018 IB2013061018W WO2015052558A1 WO 2015052558 A1 WO2015052558 A1 WO 2015052558A1 IB 2013061018 W IB2013061018 W IB 2013061018W WO 2015052558 A1 WO2015052558 A1 WO 2015052558A1
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- WIPO (PCT)
- Prior art keywords
- composition
- mixture
- alkyl
- compressor
- sulphur
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 143
- 239000010725 compressor oil Substances 0.000 title claims abstract description 62
- 239000000654 additive Substances 0.000 title claims description 45
- 230000000996 additive effect Effects 0.000 title claims description 32
- 230000003647 oxidation Effects 0.000 claims abstract description 44
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- -1 amine phosphate Chemical class 0.000 claims description 40
- 239000002199 base oil Substances 0.000 claims description 26
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 25
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 24
- 229910019142 PO4 Inorganic materials 0.000 claims description 22
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 22
- 239000003112 inhibitor Substances 0.000 claims description 22
- 239000003607 modifier Substances 0.000 claims description 22
- 235000021317 phosphate Nutrition 0.000 claims description 22
- 229910052698 phosphorus Inorganic materials 0.000 claims description 22
- 239000011574 phosphorus Substances 0.000 claims description 22
- 229920000642 polymer Polymers 0.000 claims description 22
- 239000005864 Sulphur Substances 0.000 claims description 21
- 125000000217 alkyl group Chemical group 0.000 claims description 17
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 16
- 150000002148 esters Chemical class 0.000 claims description 15
- 229920002367 Polyisobutene Polymers 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 150000002790 naphthalenes Chemical class 0.000 claims description 12
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical class OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000002253 acid Chemical class 0.000 claims description 7
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 7
- 239000000194 fatty acid Substances 0.000 claims description 7
- 229930195729 fatty acid Natural products 0.000 claims description 7
- 150000004665 fatty acids Chemical class 0.000 claims description 7
- 150000003852 triazoles Chemical class 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 6
- 229920005862 polyol Polymers 0.000 claims description 6
- 150000003077 polyols Chemical class 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 150000004982 aromatic amines Chemical class 0.000 claims description 4
- 239000013530 defoamer Substances 0.000 claims description 4
- 150000002191 fatty alcohols Chemical class 0.000 claims description 4
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 4
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 3
- 125000002947 alkylene group Chemical group 0.000 claims description 3
- 150000001408 amides Chemical class 0.000 claims description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 229920000620 organic polymer Polymers 0.000 claims description 3
- 239000002530 phenolic antioxidant Substances 0.000 claims description 3
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 150000004867 thiadiazoles Chemical class 0.000 claims description 3
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 2
- 108010011222 cyclo(Arg-Pro) Proteins 0.000 claims 2
- 150000003973 alkyl amines Chemical class 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 claims 1
- 150000003900 succinic acid esters Chemical class 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 35
- 238000012360 testing method Methods 0.000 description 26
- 239000000314 lubricant Substances 0.000 description 20
- 238000005265 energy consumption Methods 0.000 description 12
- 230000008859 change Effects 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 239000007866 anti-wear additive Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000010913 used oil Substances 0.000 description 4
- 239000005069 Extreme pressure additive Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 239000006078 metal deactivator Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 101150018711 AASS gene Proteins 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 2
- 241001656634 Scardia Species 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000012990 dithiocarbamate Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical class OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 1
- KPYHSKSQWKIIHY-UHFFFAOYSA-N 2-ethyl-n-(2-ethylhexyl)-n-[(5-methylbenzotriazol-1-yl)methyl]hexan-1-amine Chemical compound CC1=CC=C2N(CN(CC(CC)CCCC)CC(CC)CCCC)N=NC2=C1 KPYHSKSQWKIIHY-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 241000935974 Paralichthys dentatus Species 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001448 anilines Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 150000004657 carbamic acid derivatives Chemical class 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000007705 chemical test Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007727 cost benefit analysis Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 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 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000010723 turbine oil Substances 0.000 description 1
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- C10M161/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
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- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
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- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
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- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
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- C10M2205/026—Butene
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- C10M2205/22—Alkylation reaction products with aromatic type compounds, e.g. Friedel-crafts
- C10M2205/223—Alkylation reaction products with aromatic type compounds, e.g. Friedel-crafts used as base material
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
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- 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
- C10M2223/041—Triaryl phosphates
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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
- C10M2223/043—Ammonium or amine salts thereof
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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
- C10M2223/047—Thioderivatives not containing metallic elements
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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
- C10M2223/049—Phosphite
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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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/011—Cloud point
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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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/017—Specific gravity or density
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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
- 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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- 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
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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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
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
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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
- C10N2030/54—Fuel economy
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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
- C10N2030/58—Elastohydrodynamic lubrication, e.g. for high compressibility layers
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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
- C10N2040/30—Refrigerators lubricants or compressors lubricants
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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
- C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
- C10N2060/14—Chemical after-treatment of the constituents of the lubricating composition by boron or a compound containing boron
Definitions
- One of the important tasks of the compressor is to compress the process gas / air for various industrial applications.
- screw or centrifugal air compressors are being useddepending upon the pressure and flow rate requirements.
- a screw rotary compressor contains a housing including bore, bearings, low pressure end as inlet and high pressure end with high pressure as outlet.
- An efficient screw compressor in general generates a pressure of about 5 to 30 bar.
- the compressor oil in a rotary screw compressor acts as coolant for absorbing compression / frictional heat, seal the rotors, lubricate the moving parts and protect the overall compressor system from rust & corrosion.
- Energy conservation is the concept used for formulating superior products. As some energy of prime mover in compressor is being used for driving the moving parts against friction, the use of superior lubricant with comparatively lower coefficient of friction may help in energy conservation. Based on this concept, the present work was undertaken in the authors' laboratory.
- compressor delivers high pressure gas / airiherebv resulting to elevation in working temperature.
- compressor oil is oxidized as it comes in contact of the hot metal surfaces / hot air or gasin a running compressor.
- the main objective of the present invention is to develop a novel composition of compressor oil with superior energy efficiency and resistance to oxidation ensuring longer useful life in industrial equipments such as rotary screw air compressors.
- a compressor lubricant composition providing energy savings and exhibiting excellent oxidation stability is provided, as well as a process for preparation of the lubricant composition.
- the composition comprises: (i) from 68 to 99.999 wt % of an isomerized base oil or blend of isomerized base oils; (ii) 0.001 through 20 wt % of a blend of ashless additives, the ashless additives having a viscosity range at 40° C. of from 50 mm2/s to 60 mm2/s, a d, at 20° C. of from 0.95 through 1.05 g/cm3, a flash point of greater than 100° C.
- COC solublized in mineral oil of greater than 5 wt %, sulfur content of from 4.8 wt % through 6.0 wt %, and phosphorus content of from 2.9 through 3.6 wt %; (iii) less than 1.0 wt % of a dithiocarbamate, wherein the Conradson carbon residue is less than or equal to 3.00.
- the dithiocarbamate is added to the base oil blend as a top treatment.
- a compressor lubricant composition providing energy savings and exhibiting excellent oxidation stability comprises (i) 80 to 99.999 wt.% of an isomerized base oil; and (ii) 0.001 -20 wt.% of at least an additive selected from an additive package, oxidation inhibitors, pour point depressants, metal deactivators, metal passivators, anti-foaming agents, friction modifiers, anti-wear agents, and mixtures thereof; wherein the isomerized base oil has consecutive nos. of carbon atoms, ⁇ 0.05 wt.% aromatics, a ratio of mois. withmonocycloparaffinic functionality to mo Is. withmulticyloparaffinic functionality greater than 2,
- compressors employing the lubricant composition with isomerized base oil consumes at least 1 % less power than compressors employing the lubricant composition of the prior art.
- Rotary screw compressor lubricants were manufactured from blends of 22-35 wt.% esters of trimethylolpropane or pentaerythritol with C4-18 fatty acids and 65-78 wt.% polyether polyols with a no. av. mol. wt. 700-2500.
- Addn. of other commonly available components up to 10 wt.% based on ester and polyol) completed the formulations, which had better oxidation stability than compressor lubricants.
- a composition containing polypropylene glycol [25322-69-4] (no, ay. mol. wt. 1200) 175, Stauffer ester No.
- Lubricating oil composition suitable for the lubrication of compressors contains 80-90 wt.% of pentaerythritol ester and 10-20 wt.% of dipentaerythritol ester of C4-13-carboxylic acids.
- a formulated compressor lubricant containing 95.98 wt.% of a mixture of polyol (85 wt.% pentaerythritol and 15 wt.% dipentaerythritol) esters provided superior lubrication to a com. diester-based lubricant.
- Machinery such as compressors, hydraulic equipment or turbines, can be operated with increased energy efficiency, if it is running with a lubricant composition, containing an ester base oil together with an additive blend, the later one is in very low amounts, where by the additive blends comprises at least two different additives, selected (a) dithiophosphates, and (b) alkylated phosphorothionates.
- the present invention provides a novel compressor oil additive composition
- the additive composition comprises (a) a polyisobutylene based polymer, (b) a rust and oxidation inhibitor, (c) a friction modifier, and (d) a sulphur and phosphorus containing antiwear component.
- the ratio of polyisobutylene based polymer : rust and oxidation inhibitor : friction modifier : sulphur and phosphorus containing antiwear is 2-40 : 4-24 : 1-22 : 2-30,
- the present invention provides an energy efficient compressor oil composition.
- the said compressor oil composition comprises (a) a polyisobutylene based polymer, (b) a rust and oxidation inhibitor, (c) a friction modifier, (d) a sulphur and phosphorus containing antiwear component, and (e) a mixture of severely refined base stocks, or mixture of severely hydro-processed iso-dewaxed base stock and alkylated naphthalene, or mixture of synthetic base and alkylated naphthalene or alkylated naphthalene base or mixtures thereof.
- the amount of polyisobutylene based polymer is 0.10 to 2.0 percent by weight of the composition
- the rust & oxidation inhibitor is 0.20 to 1.2 percent by weight of the composition
- the friction modifier is 0.05 to 1.1 percent by weight of the composition
- the sulphur and phosphorus containing antiwear component is 0, 10 to 1.50 percent by weight of the composition.
- a novel energy efficient, cost effective air compressor oil composition has been developed after an exhaustive research work in the laboratory followed by field trial in a rotary screw air compressorunder the identical compressor test conditions.
- the composition of the energy efficient compressor oil includes ashless additive system in combination of premium quality severely hydro treated / hydroprocessed /' isodewaxed base oils of API Group II, Group III and base oils of Group IV, Group V class or mixtures thereof.
- the additive composition for use in compressor oil composition comprises of (a) a polyisobutylene based polymer, (b) a rast and oxidation inhibitor, (c) a friction modifier, and (d) a sulphur and phosphorus containing antiwear component.
- the ratio of polyisobutylene based polymer : rust and oxidation inhibitor : friction modifier : sulphur and phosphorus containing antiwear is 2-40 : 4-24 : 1-22 : 2-30.
- the compressor oil additive composition has been prepared by mixing the appropriate amount of chosen additives or additive systems in a beaker / container.
- the additives combinations are further optimised in combination of selected hydrocarbon base oils to achieve desired performance in the laboratory tests.
- compressor oil composition comprises of:
- composition of the energy efficient compressor oil includes combination of premium quality base oils of API Group II, Group III and base oils of Group IV, Group V class, as defined in the API interchangeability guidelines, or mixtures thereof. These base oils are commercially available in the market.
- the ashless rust & oxidation inhibited additive system are packages commercially available in the market.
- the ashless rust & oxidation inhibited additive system contain combination of additives of alkyl naphthylamine, mixture of triazoles of N,N-bis (2ethylhexyl)-4-methyl-lH- benzotrizole-l-methylamine and N,N-bis(2-ethylhexyl)-5-methyl-lH-benzotriazole-l - methylamine, amine phosphate, acylsarkosinate, sterically hindered phenol, acid salt of 4- nonylphenoxy compounds, alkylated diphenylamines or mixture of aryl triazole alkyl amines, aryl amine, alkyl alkyleneoxycarboxylic amine or mixtures of sterically hindered phenol, alkylated di phenyl amines, mixture of derivatives of triazoles / thiadiazole
- the ashless antiwear / extreme pressure component / additive are commercially available and can be from array of phosphates, carbamates, dithiophospates, amine phosphates, etc.
- the ashless antiwear / extreme pressure additive can be alkyl dithiophosphate or dialkyidithiophosphate, where alkyl group can be from CI to C14.
- the sulphur and phosphorus moieties can be in the ratio of approximately of 2: 1
- the phosphates can be alkyl or aryl phosphates, where alkyl group can be having long chain length of CI to CI 8.
- the ashless alkyl carbamates is ashless antiwear / extreme pressure additive and can have sulphur and nitrogen content in the ratio of 5: 1.
- the ashless amine phosphate can be mixture of amine phosphates and having multifunctional performance with extreme pressure / antiwear and anti rust properties and phosphorus and nitrogen content can be approximately in the ratio of 2: 1.
- the preferred range in the compressor oil composition is from 0.10 to 1.5 percent by weight.
- the ashless surface active friction modifier additive is selected from array of boron containing, phosphorus containing, ester based, polymerised esters, etc.
- the friction modifier can be of amide borated ester or mixture of high molecular weight phenolic antioxidants or alkyl/aryl phosphates, phosphites, phosphonates or polymer based natural / synthetic fatty acids and polyols, or mixture thereof.
- the preferred range in the compressor oil composition is from 0.05 to 1 .1 percent by weight.
- the polymer in the composition is polyisobutylene based polymer with average molecular weight from 1,000 to 5,00,000.
- the preferred range of average molecular weight of said polymer can be 1 ,500 to 3,50,000.
- the preferred range in the compressor oil composition is from 0, 10 to 2.0 percent by weight. It would be within the scope of the present invention to use any other suitable polymer such as those selected from array of polyacrylates and polymetharcylates or ethylene propylene co-polymer of average molecular weight of 1,000 to 3,50,000.
- the compressor oil composition optionally contains foam inhibitors, which are selected from array of highly viscous organic polymer and can be of dimethyl polycyclohexane, polyacrylates, etc.
- the preferred range in the compressor oil composition is from 0.005 to 0.10 percent by weight.
- the compressor oil composition optionally contains demulsifier in sufficient amount to provide demulsification property.
- the demulsifier is selected from array of condensed polymeric alcohols, esters of fatty acids, fatty alcohols alkoxylated with alkylene oxides, or mixtures thereof.
- the preferred range in the compressor oil composition is from 0.001 to 0.05 percent by weight,
- the compressor oil composition optionally comprises a sufficient amount of pour point depressant to provide desired pour point depression.
- the pour point depressant is selected from array of poly methacrylates, polyacrylamides, olefin copolymer, etc.
- the preferred molecular weight can be in the range of 2,500 to 3,50,000.
- the preferred range in the compressor composition is from 0.01 to 1.0 percent by weight.
- the chosen additives are mixed in selected base oils at an appropriate temperature such as an average blending temperature of 60 °C to 65 °C, so that mixture gets bright, clear and homogeneous.
- the examples are listed in Table - 1A, Table - IB & Table - ! C and these examples were prepared by mixing the components in percentage by weight.
- the base oils used in the examples are of API Group I, Group II, Group III, Group IV & Group V types. These base oils are commercially available in the market.
- the array of commercially available additives& additive package were selected in various combinations to achieve best performance.
- the ashless additives includes antiwear / extreme pressure additives, friction modifier, surface active dispersants, metal deactivator, rust & oxidation inhibitor additive system, corrosion inhibitor, demulsifier, defoament etc.
- the candidate blends were prepared and tested for various physico-chemical tests including performance properties such as kinematic viscosity, total acid number, conradson carbon residue (CCR), Rotating Pressure Vessel Oxidation Test (RPVOT), Pneurop Oxidation Test (POT) and tribological tests.
- performance properties such as kinematic viscosity, total acid number, conradson carbon residue (CCR), Rotating Pressure Vessel Oxidation Test (RPVOT), Pneurop Oxidation Test (POT) and tribological tests.
- the referred formulae are suitable to use as compressor oil of different ISO viscosity grades.
- the viscosity grade can be of ISO VG 10 to ISO VG 1500 as recommended by the compressor manufacturer.
- the composition can be used in various compressor applications including reciprocating and screw air compressors.
- Various physico-chemical & performance tests were conducted to assess the performance in laboratory and thereafter trial of promising candidate was carried out in a rotary screw air compressor in actual operating conditions.
- the components used in the examples are as follows:
- SN base oils are solvent neutral or solvent refined base oils (API Group I) and are commercially available.
- Group II are commercially available API Group II base oils.
- Group III are commercially available API Group III base oils.
- Group IV are commercially available API Group IV base oils.
- Group V are commercially available API Group V base oils.
- Additive- 1 is polyisobutlyene based polymer of preferably having average molecular weight 2,500 to 2,50,000.
- Additive-2 is commercially available rust & oxidation inhibitor additive package and can contain combination of aryl amine, alky! amine, alky! alkyleneoxycarboxylic amine, and mixtures of derivatives of aryl triazole.
- Additive-3 is commercially available friction modifier, which is surface active boron containing mixture of amide ester.
- Additive-4 is commercially available sulphur & phosphorus containing antiwear additive of ashless dithipohsphates of preferably alkyl chain length of CI to C 14 and can be having sulphur & phosphorus content in the ratio of 2: 1.
- Additive-5 is commercially available demulsifier, which can be of alkoxylated fatty alcohols.
- Additive-6 is commercially available ashless type defoamer, which can be organic polyacryfate polymer,
- Additive-7 is commercially available rust & oxidation inhibited turbine oil package and can be combinations of alkylated diphenyl amines, alkyl naphthylamines, derivatives of triazoles, amine phosphates, sterically hindered phenol.
- Additive-8 is commercially available ashless antiwear additive, which can be of aryl phosphates.
- Additive-9 is commercially available polyalkyl methacrylate polymer, which can be preferably having average molecular weight of 1 ,000 to 2,50,000.
- Additive- 10 is commercially available friction modifying agent, which can be mixture of high molecular weight antioxidants.
- Additive 4 0.500 0.500 0.500 0.500 0.050 0.600 0.700
- Example 13 to 18 Table 1C SRV, coefficient 0.11 0.12 0.12 0.115 0.115 0.12 of friction
- the energy efficient air compressor oil (Composition of Example 3 of Table 1A) is evaluated against DIN 51506 VDL (VG 46) specifications.
- genuine compressor oil (VG 46) available from one of the leading compressor manufacturer's OEMs has been chosen as reference oil for generating base line data.
- high temperature oxidation tests such as Pneurop Oxidation Test (POT as per DIN 51352 Part 2), Rotating Pressure Vessel Oxidation test (RPVOT as per ASTM D 2272) and IP 280 oxidation tests were conducted on test oils,
- Table - 2 provides the physico-chemical data on energy efficient (EE) compressor oil (VG 46) vis-a-vis reference oil (VG 46).
- the kinematic viscosity as determined by ASTM D 445 in mm7s is in accordance with viscosity grade 46 and viscosity index is of 106.
- the energy efficient lubricant composition has pour point as (-) 27°C which is indicative of its low temperature properties and its suitability for low temperature application.
- the composition according to the present invention also has low foaming and air release value in comparison to reference oil.
- the flash point as detemiined by ASTM D 92 is more than 200°C suggesting its suitability for higher discharge temperature application.
- the composition is having excellent demulsibility characteristics allowing better water separation characteristics.
- the proposed composition separates water in 15 minutes as measured according to ASTM D 1401.
- the poor demulsibility of the compressor oil causes sludge, corrosion / rust formation, clogging of the filter, reduced lubricant performances and shortening of oils' life.
- Performance of Test oils in High temperature Oxidation Tests Ageing characteristics in presence of iron (III) oxide as per Pneurop oxidation test (POT) is conducted at 200 °C for 24 hours to assess the carbon forming tendency and viscosity percentage change of aged oils under the specified test conditions as per DI N 5 352 Part 2.
- the aged oils after POT test showed carbon residue formation of 0, 18 % wt and rise in kinematic viscosity @ 40 °C of 1.30% over the reference oil having carbon residue formation of 1.79 % wt and rise in kinematic viscosity @40 °C of 13.7 %, which is indicative of suitability of the energy efficient compressor oil in the extended running operation.
- the compressor lubricant composition demonstrates excellent oxidation stability as measured according to ASTM D 2272 with a RPVOT life greater than the 1000 minutes indicating thereby superior oxidation life of the energy efficient compressor oil in comparison to the reference oil.
- the TOP value (total oxidation product, % by mass) of energy efficient compressor oil is 0.076 in comparison to the 0.23 for the reference oil.
- Table 2 Test data of Reference oil (VG 46) genuine oil from leading compressor OEM
- weld load and wear scar dia done as per IP 239 & ASTM D 4172 test methods (Table-1A, I B, ! C).
- Energy efficiency of the energy efficient compressor oil was assessed in the laboratory in SRV test rig. This machine is used to measure the coefficient of friction between oscillating ball on a flat disc in a sliding contact geometry. Reduction in coefficient of friction during the test ran was taken as criteria for energy saving potential. The higher is the reduction in the coefficient of friction, better will be the energy efficiency in the oil. In this screening test @ 200N, 50°C, 50 Hz, 1 mm for 1 hour, energy efficient oil provided reduction in coefficient of friction to the extent of 17 % approximately over the reference compressor oil.
- the optical Hi I D apparatus was used to measure EHD film thickness by steel ball on glass disc and friction (traction) coefficient was measured under EHD regime by steel ball on steel disc.
- the contact of steel ball, on glass disc is coated with silica spacer layer.
- the load was kept 30N with variable rolling speed of 0 to 4 meter per second with the increment of speed of 100 mm per second for test duration of one hour.
- the EHD film thickness of the energy efficient compressor oil was more or less similar, however traction coefficient was found comparatively lower than reference oil.
- a compressor of a standard make used in industry was ran under constant duty cycle over a continuous 1000 hour period in a fixed loading cycle to unloading cycle ratio of 2: 1.
- a loading cycle is when the compressor was compressing the air to the desired pressure
- the unloading cycle is when the compressor was rotating without any compression in progress. This was achieved by continuous forced venting of the air being compressed.
- the back to back study conducted each of test oil for the period of 1000 hours in the rotary screw air compressor under identical conditions.
- the compressor was hooked with electronic energy meter to measure the energy consumption, hour meter to measure the total ranning hours.
- the Fluke make energy analysis equipment was used for instantaneous energy consumption and traces were taken over 10 minute intervals with high speed data acquisition.
- the compressor were ran with fixed ratio of loading & unloading cyclesby using constant air venting to enable one to one energy consumption in the identical operating conditions.
- the ratio of loading & unloading cycles was kept in the ratio of 2 : 1 .
- the sequence of evaluation was to run the EE compressor oil for 1000 hours and take the energy consumption, run the compressor with reference oil for 1000 hours and measure the energy consumption, run again the EE compressor oil for 1000 hours and take the energy consumption and run hack to back with reference oil for 1000 hours and take the energy consumption.
- the average energy consumption was recorded for each of the oils. The instantaneous energy consumption at different point of time was also recorded.
- the used oil samples were collected for checking the % change in kinematic viscosity, change in total acid number and generation of wear metals.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Compressor (AREA)
Abstract
The present invention discloses a composition of ashless energy efficient compressor oil. The compressor oil composition of the present invention provides energy savings with excellent thermal and oxidation stability and reduced carbon deposits.
Description
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One of the important tasks of the compressor is to compress the process gas / air for various industrial applications. In this regard, screw or centrifugal air compressors are being useddepending upon the pressure and flow rate requirements.
A screw rotary compressor contains a housing including bore, bearings, low pressure end as inlet and high pressure end with high pressure as outlet. An efficient screw compressor in general generates a pressure of about 5 to 30 bar. The compressor oil in a rotary screw compressor acts as coolant for absorbing compression / frictional heat, seal the rotors, lubricate the moving parts and protect the overall compressor system from rust & corrosion.
Energy conservation is the concept used for formulating superior products. As some energy of prime mover in compressor is being used for driving the moving parts against friction, the use of superior lubricant with comparatively lower coefficient of friction may help in energy conservation. Based on this concept, the present work was undertaken in the authors' laboratory.
In the compression, compressor delivers high pressure gas / airiherebv resulting to elevation in working temperature. During this process, compressor oil is oxidized as it comes in contact of the hot metal surfaces / hot air or gasin a running compressor. The main objective of the present invention is to develop a novel composition of compressor oil with superior energy efficiency and resistance to oxidation ensuring longer useful life in industrial equipments such as rotary screw air compressors.
US Pat. Appl Publ (2012) US 20120108479A Al 20120503 by Shah, Ravindra, titled Compressor oils having improved oxidation resistance.
A compressor lubricant composition, providing energy savings and exhibiting excellent oxidation stability is provided, as well as a process for preparation of the lubricant composition. The composition comprises: (i) from 68 to 99.999 wt % of an isomerized base oil or blend of isomerized base oils; (ii) 0.001 through 20 wt % of a blend of ashless additives, the ashless additives having a viscosity range at 40° C. of from 50 mm2/s to 60 mm2/s, a d, at 20° C. of from 0.95 through 1.05 g/cm3, a flash point of greater than 100° C. (COC), solublized in mineral oil of greater than 5 wt %, sulfur content of from 4.8 wt % through 6.0 wt %, and phosphorus content of from 2.9 through 3.6 wt %; (iii) less than 1.0 wt % of a dithiocarbamate, wherein the Conradson carbon residue is less than or equal to 3.00. The dithiocarbamate is added to the base oil blend as a top treatment.
US PatApplPubl (2009), US 20090181871 Al 20090716, by Shah Ravindra, Rosenbaum, John M.;Scholier, Thierry; De Keyser, Marianne; Bertrand Nancy J. of Chevron Corporation titled Compressor lubricant compositions and preparation thereof
A compressor lubricant composition providing energy savings and exhibiting excellent oxidation stability is provided. The composition comprises (i) 80 to 99.999 wt.% of an isomerized base oil; and (ii) 0.001 -20 wt.% of at least an additive selected from an additive package, oxidation inhibitors, pour point depressants, metal deactivators, metal passivators, anti-foaming agents, friction modifiers, anti-wear agents, and mixtures thereof; wherein the isomerized base oil has consecutive nos. of carbon atoms, <0.05 wt.% aromatics, a ratio of mois. withmonocycloparaffinic functionality to mo Is. withmulticyloparaffinic functionality greater than 2, In one embodiment, compressors employing the lubricant composition with isomerized base oil consumes at least 1 % less power than compressors employing the lubricant composition of the prior art.
US (1981), US 4302343 A 19811124, by Carswell, Robert; McGraw, Philip W. titled Rotary- Screw Compressor lubricants
Rotary screw compressor lubricants were manufactured from blends of 22-35 wt.% esters of trimethylolpropane or pentaerythritol with C4-18 fatty acids and 65-78 wt.% polyether polyols with a no. av. mol. wt. 700-2500. Addn. of other commonly available components (up to 10 wt.% based on ester and polyol) completed the formulations, which had better oxidation stability than compressor lubricants. Thus, a composition containing polypropylene
glycol [25322-69-4] (no, ay. mol. wt. 1200) 175, Stauffer ester No. 825 (a pentaerythritolietraester) [81181-26-2] 75, antioxidant 3.75, corrosion inhibitor 1.25, and metal deactivator 0.125 Ibrequired 18 h 30 min to give a 25-lb pressure drop in a rotary bomb (ASTM D-2272 oxidn. test) compared with Anderol 495 (a com. lubricant based on a dialkyladipate) wh ch required 9 h 50 min.
US (1979), US 4175045 A 19791 20 by Timony, Peter E, titled Compressor lubrication Lubricating oil composition suitable for the lubrication of compressors contains 80-90 wt.% of pentaerythritol ester and 10-20 wt.% of dipentaerythritol ester of C4-13-carboxylic acids. Thus, a formulated compressor lubricant containing 95.98 wt.% of a mixture of polyol (85 wt.% pentaerythritol and 15 wt.% dipentaerythritol) esters provided superior lubrication to a com. diester-based lubricant.
European Patent Application 09012058.5 number EP 2 305782 A1 in 2009 by Rinkiieb, Ronny, Rettemeyer, Dirk, Scherer, Markustitled Lubricant compositions of Cognis IP Management GmbH
Machinery, such as compressors, hydraulic equipment or turbines, can be operated with increased energy efficiency, if it is running with a lubricant composition, containing an ester base oil together with an additive blend, the later one is in very low amounts, where by the additive blends comprises at least two different additives, selected (a) dithiophosphates, and (b) alkylated phosphorothionates.
Genesis for the development of energy efficient Air Compressor Oil:
It has been well established that the energy saving through the use of the lubricants can be achieved through the following two approaches:
· By reducing the viscous drag through choosing optimum viscosity of the lubricants
* By reducing the frictional losses in boundary or mixed lubrication regimes through the use of fiction reducer
Review on energy efficient air compressor oils revealed that use of synthetic bases with high performance additives has been practiced to achieve energy efficiency with improved fluid performance.
Summary of the Invention;
The present invention provides a novel compressor oil additive composition, The additive composition comprises (a) a polyisobutylene based polymer, (b) a rust and oxidation inhibitor, (c) a friction modifier, and (d) a sulphur and phosphorus containing antiwear component.
In a preferred embodiment, in the additive composition, the ratio of polyisobutylene based polymer : rust and oxidation inhibitor : friction modifier : sulphur and phosphorus containing antiwear is 2-40 : 4-24 : 1-22 : 2-30, In another aspect, the present invention provides an energy efficient compressor oil composition. The said compressor oil composition comprises (a) a polyisobutylene based polymer, (b) a rust and oxidation inhibitor, (c) a friction modifier, (d) a sulphur and phosphorus containing antiwear component, and (e) a mixture of severely refined base stocks, or mixture of severely hydro-processed iso-dewaxed base stock and alkylated naphthalene, or mixture of synthetic base and alkylated naphthalene or alkylated naphthalene base or mixtures thereof.
In a preferred embodiment, in the compressor oil composition, the amount of polyisobutylene based polymer is 0.10 to 2.0 percent by weight of the composition, the rust & oxidation inhibitor is 0.20 to 1.2 percent by weight of the composition, the friction modifier is 0.05 to 1.1 percent by weight of the composition, and the sulphur and phosphorus containing antiwear componentis 0, 10 to 1.50 percent by weight of the composition.
Detailed Description of the Invention;
The Innovation:
A novel energy efficient, cost effective air compressor oil composition has been developed after an exhaustive research work in the laboratory followed by field trial in a rotary screw air compressorunder the identical compressor test conditions. The composition of the energy efficient compressor oil includes ashless additive system in combination of premium quality severely hydro treated / hydroprocessed /' isodewaxed base oils of API Group II, Group III and base oils of Group IV, Group V class or mixtures thereof. It would be within the scope of this invention to use any other suitable base oil, like severely hydrotreated base oils of API Group I, with appropriate modifications,
The novel compressor oil composition has been finalized in three phases, in the phase I - laboratory evaluation of candidate blends for physico-chemical properties; in the phase II - tribological studies conducted and finally in the phase III - field evaluation was carried out on the energy efficient compressor oil to establish its performance in a rotary screw air compressor against genuine oil available from compressor OEM (original equipment manufacturer).
The additive composition for use in compressor oil composition comprises of (a) a polyisobutylene based polymer, (b) a rast and oxidation inhibitor, (c) a friction modifier, and (d) a sulphur and phosphorus containing antiwear component. The ratio of polyisobutylene based polymer : rust and oxidation inhibitor : friction modifier : sulphur and phosphorus containing antiwear is 2-40 : 4-24 : 1-22 : 2-30.
The compressor oil additive composition has been prepared by mixing the appropriate amount of chosen additives or additive systems in a beaker / container. The additives combinations are further optimised in combination of selected hydrocarbon base oils to achieve desired performance in the laboratory tests.
According to this invention, compressor oil composition comprises of:
(a) a polyisobutylene based polymer, (b) a rust and oxidation inhibitor, (c) a friction modifier, (d) a sulphur and phosphorus containing antiwear component, and (e) a mixture of severely refined base stocks, or mixture of severely hydro-processed iso-dewaxed base stock and alkylated naphthalene, or mixture of synthetic base and alkylated naphthalene or alkylated naphthalene base or mixtures thereof.
The composition of the energy efficient compressor oil includes combination of premium quality base oils of API Group II, Group III and base oils of Group IV, Group V class, as defined in the API interchangeability guidelines, or mixtures thereof. These base oils are commercially available in the market.
The ashless rust & oxidation inhibited additive system are packages commercially available in the market. The ashless rust & oxidation inhibited additive system contain combination of additives of alkyl naphthylamine, mixture of triazoles of N,N-bis (2ethylhexyl)-4-methyl-lH-
benzotrizole-l-methylamine and N,N-bis(2-ethylhexyl)-5-methyl-lH-benzotriazole-l - methylamine, amine phosphate, acylsarkosinate, sterically hindered phenol, acid salt of 4- nonylphenoxy compounds, alkylated diphenylamines or mixture of aryl triazole alkyl amines, aryl amine, alkyl alkyleneoxycarboxylic amine or mixtures of sterically hindered phenol, alkylated di phenyl amines, mixture of derivatives of triazoles / thiadiazoles. The preferred range is from 0.20 to 1.2 percent by weight of the composition.
The ashless antiwear / extreme pressure component / additive are commercially available and can be from array of phosphates, carbamates, dithiophospates, amine phosphates, etc. The ashless antiwear / extreme pressure additive can be alkyl dithiophosphate or dialkyidithiophosphate, where alkyl group can be from CI to C14. The sulphur and phosphorus moieties can be in the ratio of approximately of 2: 1 , The phosphates can be alkyl or aryl phosphates, where alkyl group can be having long chain length of CI to CI 8. The ashless alkyl carbamates is ashless antiwear / extreme pressure additive and can have sulphur and nitrogen content in the ratio of 5: 1. The ashless amine phosphate can be mixture of amine phosphates and having multifunctional performance with extreme pressure / antiwear and anti rust properties and phosphorus and nitrogen content can be approximately in the ratio of 2: 1. The preferred range in the compressor oil composition is from 0.10 to 1.5 percent by weight.
The ashless surface active friction modifier additive is selected from array of boron containing, phosphorus containing, ester based, polymerised esters, etc. The friction modifier can be of amide borated ester or mixture of high molecular weight phenolic antioxidants or alkyl/aryl phosphates, phosphites, phosphonates or polymer based natural / synthetic fatty acids and polyols, or mixture thereof. The preferred range in the compressor oil composition is from 0.05 to 1 .1 percent by weight.
The polymer in the composition is polyisobutylene based polymer with average molecular weight from 1,000 to 5,00,000. The preferred range of average molecular weight of said polymer can be 1 ,500 to 3,50,000. The preferred range in the compressor oil composition is from 0, 10 to 2.0 percent by weight. It would be within the scope of the present invention to use any other suitable polymer such as those selected from array of polyacrylates and polymetharcylates or ethylene propylene co-polymer of average molecular weight of 1,000 to 3,50,000.
The compressor oil composition optionally contains foam inhibitors, which are selected from array of highly viscous organic polymer and can be of dimethyl polycyclohexane, polyacrylates, etc. The preferred range in the compressor oil composition is from 0.005 to 0.10 percent by weight. The compressor oil composition optionally contains demulsifier in sufficient amount to provide demulsification property. The demulsifieris selected from array of condensed polymeric alcohols, esters of fatty acids, fatty alcohols alkoxylated with alkylene oxides, or mixtures thereof. The preferred range in the compressor oil composition is from 0.001 to 0.05 percent by weight,
The compressor oil composition optionally comprises a sufficient amount of pour point depressant to provide desired pour point depression. The pour point depressant is selected from array of poly methacrylates, polyacrylamides, olefin copolymer, etc. The preferred molecular weight can be in the range of 2,500 to 3,50,000. The preferred range in the compressor composition is from 0.01 to 1.0 percent by weight.
The chosen additives are mixed in selected base oils at an appropriate temperature such as an average blending temperature of 60 °C to 65 °C, so that mixture gets bright, clear and homogeneous.
A high performance energy efficient compressor oil composition according to the preferred embodiment is herein described in the following examples:
Several candidate blends of aforesaid additives and base stocks were prepared and evaluated in laboratory for critical properties like kinematic viscosity, total acid number, conradson carbon residue (CCR), Rotating Pressure Vessel Oxidation Test (RPVOT), Pneurop Oxidation Test (POT) and tribological tests.
Examples:
The examples are listed in Table - 1A, Table - IB & Table - ! C and these examples were prepared by mixing the components in percentage by weight. The base oils used in the examples are of API Group I, Group II, Group III, Group IV & Group V types. These base oils are commercially available in the market. The array of commercially available
additives& additive package were selected in various combinations to achieve best performance. The ashless additives includes antiwear / extreme pressure additives, friction modifier, surface active dispersants, metal deactivator, rust & oxidation inhibitor additive system, corrosion inhibitor, demulsifier, defoament etc. The candidate blends were prepared and tested for various physico-chemical tests including performance properties such as kinematic viscosity, total acid number, conradson carbon residue (CCR), Rotating Pressure Vessel Oxidation Test (RPVOT), Pneurop Oxidation Test (POT) and tribological tests.
The referred formulae are suitable to use as compressor oil of different ISO viscosity grades. The viscosity grade can be of ISO VG 10 to ISO VG 1500 as recommended by the compressor manufacturer. The composition can be used in various compressor applications including reciprocating and screw air compressors. Various physico-chemical & performance tests were conducted to assess the performance in laboratory and thereafter trial of promising candidate was carried out in a rotary screw air compressor in actual operating conditions. The components used in the examples are as follows:
SN base oils are solvent neutral or solvent refined base oils (API Group I) and are commercially available. Group II are commercially available API Group II base oils.
Group III are commercially available API Group III base oils.
Group IV are commercially available API Group IV base oils.
Group V are commercially available API Group V base oils.
Additive- 1 is polyisobutlyene based polymer of preferably having average molecular weight 2,500 to 2,50,000.
Additive-2 is commercially available rust & oxidation inhibitor additive package and can contain combination of aryl amine, alky! amine, alky! alkyleneoxycarboxylic amine, and mixtures of derivatives of aryl triazole.
Additive-3 is commercially available friction modifier, which is surface active boron containing mixture of amide ester.
Additive-4 is commercially available sulphur & phosphorus containing antiwear additive of ashless dithipohsphates of preferably alkyl chain length of CI to C 14 and can be having sulphur & phosphorus content in the ratio of 2: 1.
Additive-5 is commercially available demulsifier, which can be of alkoxylated fatty alcohols. Additive-6 is commercially available ashless type defoamer, which can be organic polyacryfate polymer,
Additive-7 is commercially available rust & oxidation inhibited turbine oil package and can be combinations of alkylated diphenyl amines, alkyl naphthylamines, derivatives of triazoles, amine phosphates, sterically hindered phenol.
Additive-8 is commercially available ashless antiwear additive, which can be of aryl phosphates. Additive-9 is commercially available polyalkyl methacrylate polymer, which can be preferably having average molecular weight of 1 ,000 to 2,50,000.
Additive- 10 is commercially available friction modifying agent, which can be mixture of high molecular weight antioxidants.
Examples 1 to 6: Table - 1 A
Example 7 to 12: Table IB
Components Example - ExampleExample- Example- Example- Example- 7 s' 9 10 11 12
SN base 98.639 __ __
API Group II 58.339 __ 50.289 40.689
API Group III 67.588 __
API Group IV __ 38.339
API Group V 40.000 30.000 60.000 45.000 55.000
Additive 1 0.050 0.800 1.400 0.800 3.000 0.800
Additive 2 0.500 0.050 0.500 0.500 0.800 2.500
Additive 3 0.300 0.300 0.001 0.300 0.300 0.300
Additive 4 0.500 0.500 0.500 0.050 0.600 0.700
Additive 5 0.001 0.001 0.001 0.001 0.001 0.001
Additive 6 0.0 Ϊ0 0.010 0.010 0.010 0.010 0.010
Total 100.000 100.000 100.000 100.000 100.000 100.000
Properties Example - Example- Example- Example- Example- Example-
BHD film 138 140 141 139 138 140 thickness, nm
Wear scar dia, 0.40 0.40 0.40 0.40 0.40 0.60 mm
Remarks superior poor moderate superior moderate Lower
RPVOT RPOVT RPVOT RPVOT RPVOT RPVOT
life but life life life life life & inferior in inferior
POT in POT
Phase - 1 : Laboratory Evaluation
The energy efficient air compressor oil (Composition of Example 3 of Table 1A) is evaluated against DIN 51506 VDL (VG 46) specifications. For comparison, genuine compressor oil (VG 46) available from one of the leading compressor manufacturer's OEMs has been chosen as reference oil for generating base line data. In order to confirm the oxidation inhibiting properties of the selected novel additive system, high temperature oxidation tests such as Pneurop Oxidation Test (POT as per DIN 51352 Part 2), Rotating Pressure Vessel Oxidation test (RPVOT as per ASTM D 2272) and IP 280 oxidation tests were conducted on test oils,
Physico-chemical properties:
Table - 2 provides the physico-chemical data on energy efficient (EE) compressor oil (VG 46) vis-a-vis reference oil (VG 46). The kinematic viscosity as determined by ASTM D 445 in mm7s is in accordance with viscosity grade 46 and viscosity index is of 106. The energy efficient lubricant composition has pour point as (-) 27°C which is indicative of its low temperature properties and its suitability for low temperature application. The composition according to the present invention also has low foaming and air release value in comparison to reference oil. The flash point as detemiined by ASTM D 92 is more than 200°C suggesting its suitability for higher discharge temperature application. The composition is having excellent demulsibility characteristics allowing better water separation characteristics. The proposed composition separates water in 15 minutes as measured according to ASTM D 1401. The poor demulsibility of the compressor oil causes sludge, corrosion / rust formation, clogging of the filter, reduced lubricant performances and shortening of oils' life. Performance of Test oils in High temperature Oxidation Tests:
Ageing characteristics in presence of iron (III) oxide as per Pneurop oxidation test (POT) is conducted at 200 °C for 24 hours to assess the carbon forming tendency and viscosity percentage change of aged oils under the specified test conditions as per DI N 5 352 Part 2. The aged oils after POT test showed carbon residue formation of 0, 18 % wt and rise in kinematic viscosity @ 40 °C of 1.30% over the reference oil having carbon residue formation of 1.79 % wt and rise in kinematic viscosity @40 °C of 13.7 %, which is indicative of suitability of the energy efficient compressor oil in the extended running operation.
The compressor lubricant composition demonstrates excellent oxidation stability as measured according to ASTM D 2272 with a RPVOT life greater than the 1000 minutes indicating thereby superior oxidation life of the energy efficient compressor oil in comparison to the reference oil. As per IP 280 oxidation procedure the TOP value (total oxidation product, % by mass) of energy efficient compressor oil is 0.076 in comparison to the 0.23 for the reference oil. Table 2: Test data of Reference oil (VG 46) genuine oil from leading compressor OEM
&
Energy Efficient (EE) Compressor oil (VG 46)
Phase - 2: Evaluation in Tribological Tests:
In order to compare the anti-frictional performance of energy efficient compressor oil with that of reference compressor oil, weld load and wear scar dia (WSD) done as per IP 239 & ASTM D 4172 test methods (Table-1A, I B, ! C). Energy efficiency of the energy efficient compressor oil was assessed in the laboratory in SRV test rig. This machine is used to measure the coefficient of friction between oscillating ball on a flat disc in a sliding contact geometry. Reduction in coefficient of friction during the test ran was taken as criteria for energy saving potential. The higher is the reduction in the coefficient of friction, better will be the energy efficiency in the oil. In this screening test @ 200N, 50°C, 50 Hz, 1 mm for 1 hour, energy efficient oil provided reduction in coefficient of friction to the extent of 17 % approximately over the reference compressor oil.
The optical Hi I D apparatus was used to measure EHD film thickness by steel ball on glass disc and friction (traction) coefficient was measured under EHD regime by steel ball on steel disc. The contact of steel ball, on glass disc is coated with silica spacer layer. The load was kept 30N with variable rolling speed of 0 to 4 meter per second with the increment of speed of 100 mm per second for test duration of one hour. The EHD film thickness of the energy efficient compressor oil was more or less similar, however traction coefficient was found comparatively lower than reference oil.
In order to validate the laboratory findings, energy efficientcompressor oil was evaluated in the Screw Air Compressor in comparison to reference oil for the duration of 1000 hours of operation in identical conditions. Details of Single stage Rotary Screw Air Compressor:
Make : Atlas Copco
Model : GA 45
Full load current : 83 amps
Voltage : 415 volts
Frequency : 50 Hz
Motor rating : 45 kW
Refrigerated Air Dry : For removal of water from air
Running hours 1000 hours Phase - 3: Field Evaluation:
In order to do a one to one comparison of the energy efficiency of two oils, a compressor of a standard make used in industry was ran under constant duty cycle over a continuous 1000 hour period in a fixed loading cycle to unloading cycle ratio of 2: 1. A loading cycle is when the compressor was compressing the air to the desired pressure, and the unloading cycle is when the compressor was rotating without any compression in progress. This was achieved by continuous forced venting of the air being compressed.
This test was done first over a 1000 Hours period with EE Compressor oil and subsequently with the reference oil. After a 1000 Hour comparison was completed between the two oils, the oils were repeated back to back again over a 1000 hour period to verify the comparison between the oils. The following parameters were logged during this period
1) Energy Consumption: using Electronic Energy meter - to measure
• Cumulative Energy Consumption
• Instantaneous values at specified intervals of time
2) Hour Meter: To measure running hours
The efficiencies in terms of the reduction in power consumed to compress the same quantity of air were taken the criteria. Hence,compressor was operated with fixed ratio of loading and unloading cycles and monitoring was done during the entire test period.
The back to back study conducted each of test oil for the period of 1000 hours in the rotary screw air compressor under identical conditions. The compressor was hooked with electronic energy meter to measure the energy consumption, hour meter to measure the total ranning hours. The Fluke make energy analysis equipment was used for instantaneous energy consumption and traces were taken over 10 minute intervals with high speed data acquisition. The compressor were ran with fixed ratio of loading & unloading cyclesby using constant air venting to enable one to one energy consumption in the identical operating conditions. The
ratio of loading & unloading cycles was kept in the ratio of 2 : 1 , The sequence of evaluation was to run the EE compressor oil for 1000 hours and take the energy consumption, run the compressor with reference oil for 1000 hours and measure the energy consumption, run again the EE compressor oil for 1000 hours and take the energy consumption and run hack to back with reference oil for 1000 hours and take the energy consumption. The average energy consumption was recorded for each of the oils. The instantaneous energy consumption at different point of time was also recorded.
The used oil samples were collected for checking the % change in kinematic viscosity, change in total acid number and generation of wear metals.
The summary of energy consumption of energy efficient compressor oils in comparison to the reference oil is provided in the Table - 3;
Table - 3: Power consumptions on reference oil &
nergy Efficient (EE) Compressor oil in the Screw Air Compressor
The superior properties of the energy efficient compressor oil composition in terms of oxidation life is indicated with the lower rise in kinematic viscosity rise of used oil samples drawn after 1000 hours of operation with no abnormal change in total acid no and wear metals (Table - 4).
Table - 4: Used oil analysis results of reference oil &
Energy Efficient (EE) Compressor Oil collected from Rotary Screw Air Compressor
Benefits of the energy efficient compressor oil:
li has been concluded that by switching over with energy efficient compressor oil in a screw air compressor, an annual saving of INR 68,000/- approximately is expected taking into account the average power saving of 3.9% after considering the cost of the power @ INR 6.50 per Wh. (Table - 5)
Table - 5: Cost Benefit Analysis of Energy Efficient Compressor Oil
The important outcome of the trial on energy efficient compressor oil is as follows:
* The high performance compressor oil possess adequate viscometrics, superior viscosity index, antirust & anticorrosive properties with energy efficiency and load bearing capability
* Energy efficient compressor oil provided excellent lubrication to various moving parts of compressor with no abnormal functionalities observed
* Used oil samples collected at different intervals and evaluated for % change in Kinematic Viscosity @ 40 °C, which showed no abnormal rise in viscosity, minimal change in TAN & with no abnormal build-up of wear metals
* The energy efficiency is to the tune of around 3.0 to 4.5 % in comparison to reference oil
* The energy efficient compressor oil composition would provide the enhancement in the life over reference oil as well as increased productivity and reduction in down time
An important benefit emerging out is the development of energy efficient high performance compressor oil, which is having extreme synergism between the chosen additive systems. The composition showed excellent performance with 3.0 to 4.5 percent energy efficiency over reference oil (genuine oil from leading compressor OEM) in Rotary Screw Air Compressor.
Claims
We Claim:
A compressor oil additive composition comprising:
(a) a polyisobutylene based polymer,
(b) a rust and oxidation inhibitor,
(c) a friction modifier, and
(d) a sulphur and phosphorus containing antiwear component.
2, The composition as claimed in claim 1 , wherein the ratio of polyisobutylene based polymer : rust and oxidation inhibitor : friction modifier : sulphur and phosphorus containing antiwear is 2-40 : 4-24 : 1-22 : 2-30.
3. The composition as claimed in claim 1 , wherein the rust and oxidation inhibitor is ashless rust & oxidation inhibitor additive system containing combination of additives of alkyl naphthyiamine, mixture of triazoles of N.N-bis (2ethylhexyi)-4-methyl-lH- benzotrizole-1 -methylamine and ,N-bis(2-ethylhexyl)-5-methyl-lH-benzotriazole- lmethylamine, amine phosphate, acylsarkosinaie, sterically hindered phenol, acid salt of 4- nonylphenoxy compounds, alkylated diphenyl amines or mixture of aryl triazole, alkyl amines, aryl amine, alkyl alkyleneoxycarboxylic amine or mixtures of sterically hindered phenol, alkylated diphenyl amines, mixture of derivatives of triazoles / thiadiazoles.
4, The composition as claimed in claim 1 , wherein the friction modifier is ashless surface active friction modifier additive, selected from array of boron containing, phosphorus containing, polymerised esters selected from amide borated ester or mixture of high molecular weight phenolic antioxidants or alkyl / aryl phosphates, phosphites, phosphonates or polymer based natural / synthetic fatty acids and polyols, or mixture thereof.
5. The composition as claimed in claim 1 , wherein the sulphur and phosphorus containing antiwear component is selected from alkyl dithiophosphate or dialkyldifhiophosphate, where alkyl group is from CI to CI 4, the sulphur and phosphorus moieties are in the ratio of about 2: 1 . The phosphates are alkyl or aryl phosphates, where alkyl group is having carbon chain length of C I to CI 8; ashless alkyl carbamates having sulphur and nitrogen content in the ratio of 5: 1 ; ashless amine phosphate containing mixture of amine phosphates and having multifunctional performance with extreme pressure /
antiwear and anti rast properties and phosphorus and nitrogen content in the ratio of about 2: 1.
6. The composition as claimed in claim 1, wherein the composition further comprises a demulsifier and a defoamer.
7. The composition as claimed in claim 6, wherein the demulsifier is selected from array of condensed polymeric alcohols, esters of fatty acids, fatty alcohols alkoxylated with alkylene oxides, or mixtures thereof and the defoamer is selected from array of highly viscous organic polymer, like dimethyl poiycyclohexane, polyacryiates.
An energy efficient compressor oil composition comprising:
(a) a polyisobutylene based polymer,
(b) a rust and oxidation inhibitor,
(c) a friction modifier,
(d) a sulphur and phosphorus containing antiwear component, and
(e) a mixture of severely hydrotreated / hydro-processed / iso-dewaxed base stocks and alkylated naphthalene, or mixture of synthetic bases and alkylated naphthalene or alkylated naphthalene bases or mixtures thereof.
9. The composition as claimed in claim 1, wherein the polyisobutylene based polymer is 0.10 to 2,0 percent by weight of the composition, the rust & oxidation inhibitor is 0.20 to 1.2 percent by weight of the composition, the friction modifier is 0.05 to 1.1 percent by weight of the composition, and the sulphur and phosphorus containing antiwear component is 0.10 to 1.50 percent by weight of the composition.
10. The composition as claimed in claim 8, wherein; the rust and oxidation inhibitor is ashless rast & oxidation inhibitor additive system containing combination of additives of alkyl naphthylamine, mixture of triazoles of N,N-bis (2ethylhexyl)-4-methyl-l H- benzotrizole-l-methylamine and N,N-bis(2-ethylhexyl)-5-methyl-lH-benzotriazole- lmethylamine, amine phosphate, acylsarkosinate, sterically hindered phenol, acid salt of 4- nonylphenoxy compounds, alkylated diphenylamines or mixture of aryl triazole alkyl amines, aryl amine, alkyl alkyleneoxycarboxylic amine or mixtures of sterically hindered phenol, alkylated diphenyl amines, mixture of derivatives of triazoles / thiadiazoles; the friction
modifier is ashless surface active friction modifier additive, selected from array of boron containing, phosphorus containing, polymerised esters selected from amide borated ester or mixture of high molecular weight phenolic antioxidants or alkyl / aryl phosphates, phosphites, phosphonates or polymer based natural / synthetic fatty acids and polyols, or mixture thereof; or succinic acid ester, succinic ester amide, mar ich base, or mixtures thereof; and the sulphur and phosphorus containing antiwear component is selected from alkyl dithiophosphate or dialkyldithiophosphate, where alkyl group is from CI to CI 4, the sulphur and phosphorus moieties are in the ratio of about 1 :2, the phosphates are alkyl or aryl phosphates, where alkyl group is having carbon chain length of CI to C 8; ashless alkyl carbamates having sulphur and nitrogen content in the ratio of 5: 1; ashless amine phosphate containing mixture of amine phosphates and having multifunctional performance with extreme pressure / antiwear and anti rust properties and phosphorus and nitrogen content in the ratio of about 2: 1.
11. The composition as claimed in claim 8, wherein the mixture of severely hydrotreated / hydro-processed / iso-dewaxed base stocks and alkylated naphthalene, or mixture of synthetic bases and alkylated naphthalene or alkylated naphthalene bases are selected from combination of premium quality base oils of API Group II, Group III and base oils of Group IV, Group V class, as defined in the API inter-changeability guidelines.
12. The composition as claimed in claim 8, wherein the composition further comprises a demulsifier and a defoamer.
13. The composition as claimed in claim 12, wherein the demulsifier is selected from array of condensed polymeric alcohols, esters of fatty acids, fatty alcohols alkoxylated with alkylene oxides, or mixtures thereof and thedefoamer is selected from array of highly viscous organic polymer, like dimethyl polycyclohexane, polyacrylates.
14. The composition as claimed in claim 10, wherein said friction modifier is an organic friction modifier ,preferably boron based ester, in an amountof 0.01 to 0.50 percent by weight of the composition.
15. The composition as clamed in claim 10, wherein said ashless antiwear component is alky (C4 - C14) dithiophosphate, in an amount of 0.05 to 1.0 percent by weight of the composition.
16. The composition as claimed in claim 10, wherein said polyisobutylene based polymer is in an amount of 0.50 to l .Opercent by weight of the composition.
17. The composition as claimed in claim 10, wherein said rust & oxidation inhibitor is in an amount of 0.20 to 1.0 percent by weight of the composition.
18. The composition as claimed in any of the preceding claims 8 to 17, wherein said composition is used for enhancing efficiency of a compressor.
19. The composition as claimed in any of the preceding claims 8 to 17, wherein the use of said composition in a rotary screw air compressor providesa power savings to the tune of 3.0 to 4.5 %.
Applications Claiming Priority (2)
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IN3195/MUM/2013 | 2013-10-09 | ||
IN3195MU2013 IN2013MU03195A (en) | 2013-10-09 | 2013-12-17 |
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PCT/IB2013/061018 WO2015052558A1 (en) | 2013-10-09 | 2013-12-17 | Compressor oil, and compressor oil additive composition |
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WO (1) | WO2015052558A1 (en) |
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CN108329978A (en) * | 2018-01-20 | 2018-07-27 | 盘锦北方沥青股份有限公司 | A kind of polyethers Screw air compressor oil composition and preparation method thereof |
CN112111316A (en) * | 2020-09-07 | 2020-12-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Refrigerating machine oil, working fluid composition and compressor |
CN112119141A (en) * | 2018-05-18 | 2020-12-22 | 国际壳牌研究有限公司 | Reciprocating compressor oil |
CN113136257A (en) * | 2021-04-22 | 2021-07-20 | 中国石油化工股份有限公司 | Composition for hydrocarbon gas synthetic compressor oil and preparation method thereof |
CN114133976A (en) * | 2020-09-03 | 2022-03-04 | 东莞市开普润滑科技有限公司 | Lubricating oil composition |
CN115386413A (en) * | 2022-09-19 | 2022-11-25 | 新乡市瑞丰新材料股份有限公司 | Long-life screw type air compressor oil complexing agent and preparation method thereof |
CN116410807A (en) * | 2021-12-30 | 2023-07-11 | 中国石油天然气股份有限公司 | Centrifugal compressor oil additive, centrifugal compressor oil and centrifugal compressor |
CN114479989B (en) * | 2020-10-27 | 2023-11-10 | 中国石油化工股份有限公司 | Antioxidant composition, preparation method thereof and lubricating oil composition |
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CN116410807A (en) * | 2021-12-30 | 2023-07-11 | 中国石油天然气股份有限公司 | Centrifugal compressor oil additive, centrifugal compressor oil and centrifugal compressor |
CN115386413A (en) * | 2022-09-19 | 2022-11-25 | 新乡市瑞丰新材料股份有限公司 | Long-life screw type air compressor oil complexing agent and preparation method thereof |
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