EP3380595A1 - Method for improving the air release of a lubricating oil in a hydraulic system - Google Patents
Method for improving the air release of a lubricating oil in a hydraulic systemInfo
- Publication number
- EP3380595A1 EP3380595A1 EP16798540.7A EP16798540A EP3380595A1 EP 3380595 A1 EP3380595 A1 EP 3380595A1 EP 16798540 A EP16798540 A EP 16798540A EP 3380595 A1 EP3380595 A1 EP 3380595A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricating oil
- mass
- oil
- air release
- base oil
- 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.)
- Pending
Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002199 base oil Substances 0.000 claims description 44
- 239000000654 additive Substances 0.000 claims description 24
- 239000000203 mixture Substances 0.000 description 33
- 230000000996 additive effect Effects 0.000 description 13
- 239000003921 oil Substances 0.000 description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000007866 anti-wear additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- -1 demulsifiers Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010561 standard procedure Methods 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
- C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
- C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
-
- 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
- C10M2203/102—Aliphatic fractions
-
- 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
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/17—Fisher Tropsch reaction products
- C10M2205/173—Fisher Tropsch reaction products used as base material
-
- 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
- C10N2020/02—Viscosity; Viscosity index
-
- 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
-
- 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
- C10N2030/02—Pour-point; Viscosity index
-
- 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
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
Definitions
- the invention relates to a method for improving the air release of a lubricating oil in a hydraulic system.
- Air entrainment is a phenomenon wherein air bubbles (typically having a diameter of less than 1mm) are dispersed throughout the lubricating oil. Entrained air can be distinguished from free air (a pocket of air trapped in part of the system) , from dissolved air (lubricating oils may contain between 6 and 12 percent by volume of dissolved air) and from foam (air bubbles typically greater than 1mm in diameter that congregate on the surface of the oil) .
- Air entrainment is a phenomenon wherein air bubbles (typically having a diameter of less than 1mm) are dispersed throughout the lubricating oil. Entrained air can be distinguished from free air (a pocket of air trapped in part of the system) , from dissolved air (lubricating oils may contain between 6 and 12 percent by volume of dissolved air) and from foam (air bubbles typically greater than 1mm in diameter that congregate on the surface of the oil) .
- the air entrainment properties of a lubricating oil are typically measured using the ASTM D3427 air release test. This test measures the time needed for air
- the invention provides a method for improving the air release of a lubricating oil in a hydraulic system, said method comprising supplying the lubricating oil to the hydraulic system;
- the lubricating oil comprises at least 90% by mass, based upon the mass of the lubricating oil, of base oil, and wherein at least 70% by mass, based upon the mass of the base oil, is GTL base oil;
- viscosity of the GTL base oil at 100°C is from 2 to 20cSt;
- the lubricating oil comprises less than 10% by mass, based upon the mass of the lubricating oil, of additives ;
- viscosity of the lubricating oil at 40°C is from 20 to lOOcSt;
- air release is measured according to ASTM D3427 and is improved as compared to air release achieved using a lubricating oil which comprises less than 70% by mass of GTL base oil.
- the inventors have found that improved air release is achieved when the base oil in the lubricating oil is predominantly GTL base oil.
- the present invention provides a method for
- a lubricating oil in a hydraulic system the lubricating oil is used not only to lubricate the machinery but also to transmit pressure. Air entrainment can be a particular issue in hydraulic systems, causing spongy or erratic operation of the hydraulics.
- the air release is measured according to ASTM D3427 (Version 14a, 2015) . Compressed air is blown through the lubricating oil, which has been heated to a temperature of 50 °C . After the air flow is stopped, the time required for the air entrained in the oil to reduce in volume to 0.2% is recorded as the air release time.
- a desirable air release value is typically less than 3 minutes, preferably less than 60 seconds and most preferably less than 20 seconds.
- the air release is improved compared to air release achieved using a lubricating oil which comprises less than 70% by mass of GTL base oil.
- the comparison is between substantially equivalent lubricating oils wherein the only difference is in the amount of GTL base oil that is present.
- the comparison should be between lubricating oils that are of the same viscosity and that contain the same additives.
- non- GTL base oil is, for example, a base oil from Group I, II or III of the API base oil categories.
- the non-GTL base oil is, for example, a base oil from Group I, II or III of the API base oil categories.
- the lubricating oil is supplied to the hydraulic system using standard methods.
- the lubricating oil comprises at least 90% by mass, based upon the mass of the lubricating oil, of base oil. At least 70% by mass, based upon the mass of the base oil, is GTL base oil. Preferably at least 75% by mass is GTL base oil.
- GTL base oils are synthesised by the
- Fischer-Tropsch method of converting natural gas to liquid fuel They have very low sulphur content and aromatic content compared with mineral oil base oils refined from crude oil and have a very high paraffin constituent ratio. Up to 30% by mass (and preferably up to 25% by mass), based upon the mass of the base oil, may be another type of base oil, including conventional base oils chosen from Groups I, II, and III of the API
- the base oil comprises at least 10% by mass of a base oil chosen from Group I, Group II or Group III.
- the kinematic viscosity of the GTL base oil at 100°C is from 2 to 20cSt, preferably from 3 to 15cSt and more preferably from 3 to lOcSt.
- the viscosity is suitably measured using ASTM D445.
- the lubricating oil comprises less than 10% by mass, based upon the mass of the lubricating oil, of additives.
- the amount of additives is less than 5% by mass. Preferably the amount of additives is at least 0.5% by mass.
- the additives may include antioxidants, antiwear additives, demulsifiers , emulsifiers, rust and corrosion inhibitors, VI improvers and/or friction modifiers.
- the additives may be supplied as additive packages, e.g. an ashless additive package or a zinc-based additive package .
- the kinematic viscosity of the lubricating oil at 40°C is from 20 to lOOcSt, preferably from 25 to 80cSt.
- the kinematic viscosity is suitably measured using ASTM D445 (ASTM D7042) . This range of viscosities provides lubricating oils suitable for use in hydraulic systems.
- Example 1 The invention is further explained in detail below by means of examples, but the invention is in no way limited by these examples.
- Example 1
- XHVI 8 a Fischer-Tropsch derived oil available from Shell having a kinematic viscosity at 100°C of approximately 8cSt
- Yubase 8 (a Group III base oil from SK Lubricants having a kinematic viscosity at 100°C of approximately 8cSt)
- Chevron 220 R (a Group II base oil from Chevron having a kinematic viscosity at 100°C of approximately 8cSt)
- the air release time of the base oil blends was tested using the ASTM D3427 method at 50°C.
- Table 1 gives the amount of each base oil (in weight % based upon the total weight of the blend) present in each blend and the air release time at 50°C.
- the blends in Table 1 are all ISO 46.
- Blend 1 100 0 0 5
- Blend 5 25 75 0 60
- Blend 9 90 0 10 5
- Blend 11 75 0 25 15 The results show very fast air release for the blends having from 75 to 100wt% GTL (Blends 1, 2, 9, 10 and 11) . All the other blends, having less than 70% GTL, have significantly slower air release times .
- Air release times are typically considered to get worse with the addition of additives.
- Blends were prepared using XHVI 8 (a Fischer-Tropsch derived oil available from Shell having a viscosity at 100°C of approximately 8cSt) and different amounts of either of the following:
- Additive Package 2 (zinc based additive package) Table 2 gives the blend compositions (in weight % based upon the total weight of the blend) for each of the additive packages with XHVI 8 and the corresponding air release times:
- Blend 12 1 0 99 10
- Blend 13 2.5 0 97.5 10
- Blend 19 0 5 95 10 Additive Additive XHVI Air Release
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201562259157P | 2015-11-24 | 2015-11-24 | |
PCT/EP2016/078469 WO2017089357A1 (en) | 2015-11-24 | 2016-11-22 | Method for improving the air release of a lubricating oil in a hydraulic system |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3380595A1 true EP3380595A1 (en) | 2018-10-03 |
Family
ID=57354397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16798540.7A Pending EP3380595A1 (en) | 2015-11-24 | 2016-11-22 | Method for improving the air release of a lubricating oil in a hydraulic system |
Country Status (7)
Country | Link |
---|---|
US (1) | US20180334633A1 (en) |
EP (1) | EP3380595A1 (en) |
JP (1) | JP7190353B2 (en) |
CN (1) | CN108350388A (en) |
BR (1) | BR112018010648B1 (en) |
RU (1) | RU2730514C2 (en) |
WO (1) | WO2017089357A1 (en) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AR032941A1 (en) * | 2001-03-05 | 2003-12-03 | Shell Int Research | A PROCEDURE TO PREPARE A LUBRICATING BASE OIL AND BASE OIL OBTAINED, WITH ITS VARIOUS USES |
US7435327B2 (en) * | 2004-12-16 | 2008-10-14 | Chevron U.S.A. Inc. | Hydraulic oil with excellent air release and low foaming tendency |
US7547666B2 (en) * | 2005-12-21 | 2009-06-16 | Chevron U.S.A. Inc. | Ashless lubricating oil with high oxidation stability |
US20070293408A1 (en) * | 2005-03-11 | 2007-12-20 | Chevron Corporation | Hydraulic Fluid Compositions and Preparation Thereof |
US7662271B2 (en) * | 2005-12-21 | 2010-02-16 | Chevron U.S.A. Inc. | Lubricating oil with high oxidation stability |
US7820600B2 (en) * | 2005-06-03 | 2010-10-26 | Exxonmobil Research And Engineering Company | Lubricant and method for improving air release using ashless detergents |
US20080096779A1 (en) * | 2005-12-21 | 2008-04-24 | Chevron U.S.A. Inc. | Turbine oil composition method for making thereof |
JP2009544804A (en) * | 2006-07-28 | 2009-12-17 | エクソンモービル リサーチ アンド エンジニアリング カンパニー | Lubricating oil composition, its preparation and use |
EP2111390A4 (en) * | 2007-01-19 | 2012-03-28 | Exxonmobil Res & Eng Co | High efficiency hydraulic oils |
US7910530B2 (en) * | 2007-03-30 | 2011-03-22 | Exxonmobil Research And Engineering Company | Method for improving the air release rate of GTL base stock lubricants using synthetic ester, and composition |
EP2176388A2 (en) * | 2007-08-13 | 2010-04-21 | Shell Internationale Research Maatschappij B.V. | Lubricating base oil blend |
JP5791277B2 (en) * | 2007-12-07 | 2015-10-07 | シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイShell Internationale Research Maatschappij Beslotenvennootshap | Base oil formulation |
JP2011515521A (en) * | 2008-03-18 | 2011-05-19 | 昭和シェル石油株式会社 | Lubricating composition |
US20140371117A1 (en) * | 2013-06-18 | 2014-12-18 | Shell Oil Company | Lubricating composition |
-
2016
- 2016-11-22 WO PCT/EP2016/078469 patent/WO2017089357A1/en active Application Filing
- 2016-11-22 BR BR112018010648-8A patent/BR112018010648B1/en active IP Right Grant
- 2016-11-22 US US15/777,724 patent/US20180334633A1/en not_active Abandoned
- 2016-11-22 CN CN201680068016.3A patent/CN108350388A/en active Pending
- 2016-11-22 RU RU2018122790A patent/RU2730514C2/en active
- 2016-11-22 JP JP2018545688A patent/JP7190353B2/en active Active
- 2016-11-22 EP EP16798540.7A patent/EP3380595A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN108350388A (en) | 2018-07-31 |
JP2018535308A (en) | 2018-11-29 |
RU2730514C2 (en) | 2020-08-24 |
WO2017089357A1 (en) | 2017-06-01 |
RU2018122790A3 (en) | 2020-03-17 |
JP7190353B2 (en) | 2022-12-15 |
RU2018122790A (en) | 2019-12-25 |
BR112018010648A2 (en) | 2018-11-13 |
BR112018010648A8 (en) | 2019-02-26 |
US20180334633A1 (en) | 2018-11-22 |
BR112018010648B1 (en) | 2020-11-17 |
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