AU2003214959B2 - Circulating oil compositions - Google Patents
Circulating oil compositions Download PDFInfo
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- AU2003214959B2 AU2003214959B2 AU2003214959A AU2003214959A AU2003214959B2 AU 2003214959 B2 AU2003214959 B2 AU 2003214959B2 AU 2003214959 A AU2003214959 A AU 2003214959A AU 2003214959 A AU2003214959 A AU 2003214959A AU 2003214959 B2 AU2003214959 B2 AU 2003214959B2
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- succinic anhydride
- effective amount
- ashless
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- 239000000203 mixture Substances 0.000 title claims description 71
- 239000010724 circulating oil Substances 0.000 title claims description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 31
- -1 boric acid Sor boric acid derivative Chemical class 0.000 claims description 29
- 229940014800 succinic anhydride Drugs 0.000 claims description 19
- 239000003112 inhibitor Substances 0.000 claims description 18
- 239000002270 dispersing agent Substances 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 claims description 14
- 239000000314 lubricant Substances 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 125000000217 alkyl group Chemical group 0.000 claims description 11
- 229920000768 polyamine Polymers 0.000 claims description 10
- 239000007795 chemical reaction product Substances 0.000 claims description 9
- 229920005652 polyisobutylene succinic anhydride Polymers 0.000 claims description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- 239000010687 lubricating oil Substances 0.000 claims description 7
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 claims description 7
- 229920002367 Polyisobutene Polymers 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 4
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 3
- 150000005676 cyclic carbonates Chemical class 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 2
- 150000008064 anhydrides Chemical class 0.000 claims description 2
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 claims description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims 1
- 125000003342 alkenyl group Chemical group 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 238000012360 testing method Methods 0.000 description 21
- 239000003921 oil Substances 0.000 description 18
- 238000009472 formulation Methods 0.000 description 13
- 239000002904 solvent Substances 0.000 description 11
- 230000007935 neutral effect Effects 0.000 description 10
- 239000002562 thickening agent Substances 0.000 description 7
- UDHXJZHVNHGCEC-UHFFFAOYSA-N Chlorophacinone Chemical compound C1=CC(Cl)=CC=C1C(C=1C=CC=CC=1)C(=O)C1C(=O)C2=CC=CC=C2C1=O UDHXJZHVNHGCEC-UHFFFAOYSA-N 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 6
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 6
- 230000001050 lubricating effect Effects 0.000 description 6
- 235000021317 phosphate Nutrition 0.000 description 6
- 230000005764 inhibitory process Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- VMDFASMUILANOL-WXXKFALUSA-N bisoprolol fumarate Chemical compound [H+].[H+].[O-]C(=O)\C=C\C([O-])=O.CC(C)NCC(O)COC1=CC=C(COCCOC(C)C)C=C1.CC(C)NCC(O)COC1=CC=C(COCCOC(C)C)C=C1 VMDFASMUILANOL-WXXKFALUSA-N 0.000 description 4
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000012990 dithiocarbamate Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 101100352919 Caenorhabditis elegans ppm-2 gene Proteins 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000001491 aromatic compounds Chemical class 0.000 description 2
- 125000003354 benzotriazolyl group Chemical class N1N=NC2=C1C=CC=C2* 0.000 description 2
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 150000002923 oximes Chemical group 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000193 polymethacrylate Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RINCXYDBBGOEEQ-UHFFFAOYSA-N succinic anhydride Chemical compound O=C1CCC(=O)O1 RINCXYDBBGOEEQ-UHFFFAOYSA-N 0.000 description 2
- 229960002317 succinimide Drugs 0.000 description 2
- 238000012065 two one-sided test Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 1
- RYYWUUFWQRZTIU-UHFFFAOYSA-N Thiophosphoric acid Chemical class OP(O)(S)=O RYYWUUFWQRZTIU-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- YTSACTNRGUJEGO-UHFFFAOYSA-N oxirane prop-1-ene Chemical group CC=C.C1CO1 YTSACTNRGUJEGO-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
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- Lubricants (AREA)
Description
WO 03/066787 PCT/US03/02937 -1- CIRCULATING OIL COMPOSITIONS Field of Invention [0001] The present invention relates to lubricating compositions for industrial machinery and more specifically to circulating oil compositions.
Background [0002] The art of formulating lubricating oil compositions for industrial equipment has become more complex as a result of increased government and user environmental standards and increased user performance requirements. For example, many end users seek lubricants that do not employ metallic detergents and dispersants that are typically used to keep deposit-forming precursors in an oil away from working surfaces. Ashless or non-metal containing dispersants and detergents, however, tend to be effective in emulsifying water in the oil.
Industrial oils such as gear, hydraulic, and circulating oils typically are required to be capable of separating from water in order that any water contamination arising during use does not adversely impact equipment operation and durability.
Thus, additives that may enhance one property of a lubricating composition may adversely effect another property.
[0003] Another required property for industrial oils is rust inhibition. Again, some end users desire lubricant compositions that employ ashless rust inhibitors.
Unfortunately, experience has shown that lubricants with ashless rust inhibitors are not as effective in inhibiting rust as lubricants using metallic sulfonate or metallic carbonate rust inhibitors. Thus use of an additive that may be environmentally desirable may result in a lubricating composition that does not meet certain specific performance requirements.
WO 03/066787 PCT/US03/02937 -2- [0004] One object of the present invention is to provide an ashless industrial oil lubricating composition that has good water separability characteristics.
[0005] Another object is to provide an ashless lubricating composition that has good rust inhibition.
[0006] Yet another object is to provide an industrial oil composition that has good thermal and oxidative stability.
Summary of Invention [0007] It has now been found that the combination of an ashless dispersant comprising the reaction product of a succinic anhydride and a polyamine and an ashless rust inhibitor comprising a mixture of a succinic anhydride and an aromatic oxime in a lubricant basestock along with a polyoxyalkylene alcohol demulsifier provides a composition having good demulsibility, deposit control and rust inhibition. Accordingly, in one embodiment, a lubricant composition is provided comprising: a lubricating oil basestock; an effective amount of an ashless dispersant comprising the reaction product of a polyalkenyl substituted succinic anhydride and a polyamine; an effective amount of an ashless rust inhibitor comprising a mixture of a alkyl succinic anhydride and an aromatic oxime; and an effective amount of a demulsifier comprising a polyoxyalkylene alcohol.
[0008] Other embodiments of the invention will become apparent from the detailed description which follows.
WO 03/066787 PCT/US03/02937 -3- Detailed Description of the Invention [0009] The lubricating oil basestock comprises a major portion of the composition of the present invention and typically will be selected from any of the natural mineral oils of API Group I basestocks. Preferably, the basestock will comprise a mixture of Group I basestock of different viscosities which will be combined in proportions sufficient to meet a predetermined viscosity requirement. For example, a suitable basestock for a paper machine oil comprises a mixture of from about 20 to 80 wt/o of a 2500 solvent neutral mineral oil and 600 solvent neutral mineral oil. The basestock can also comprise API Group II, Group III or Group IV basestocks or mixtures of any of Group I, Group II, Group III and Group IV basestocks.
[0010] The lubricating oil compositions of the invention includes an effective amount of a succinimide comprising the reaction product of polyalkenyl substituted succinic anhydride and a polyamine. Typically, the polyalkenyl group of the succinic anhydride will be selected from ethylene, propylene, butylene, isobutylene and pentene and preferably is a polyisobutylene group of from about 500 to about 2500 Mn and more preferably from about 900 to about 1000 Mn. Thus, the preferred polyalkenyl succinic acid anhydride is polyisobutylene succinic anhydride (PIBSA).
100111 Among suitable polyamines used in forming the succinimide mention is made of ethylenediamine (EDA), diethylenetriaminime (DETA), triethylenetetramine (TETA) and tetraethylenepentamine (TEPA). Particularly preferred is TEPA. Thus, the preferred dispersant is PIBSA TEPA.
WO 03/066787 PCT/US03/02937 -4- [0012] The method for reacting a polyalkenyl succinic anhydride with a polyamine is well known in the art. In general, the molar ratio of polyamine to polyalkenyl succinic anhydride is in the range of about 0.35:1 to about 1:1.
[00131 Preferably the reaction product is subjected to a postcure with cyclic carbonate, boric acid or a boric acid derivative. Postcure techniques are known in the art. In this regard see, for example, USP 4,612,132 which is incorporated herein by reference.
[0014] In general, the amount of dispersant will constitute from about 0.1 to about 5.0 wt%/ of the total weight of the composition and preferably from 0.2 to wt%.
[0015] The lubricating oil composition of the invention, also includes an effective amount of a mixture of an alkyl substituted succinic anhydride and an oxime substituted aromatic compound. The alkyl substituted succinic anhydride may be represented by the formula
R
0 where R is a linear or branched alkyl group of from about 8 to about 20 carbon atoms. Preferably R is a branched alkyl group of from 12 to 14 carbon atoms.
100161 The oxime substituted aromatic compound may be represented by the formula WO 03/066787 PCT/US03/02937 H NOH R, H 2
OH
where R is H or and R 2 is an alkyl group of from 5 to 15 carbon atoms.
[0017] Typically, molar ratio of alkyl substituted succinic anhydride to aromatic oxime will be in the range of about 1:1 to about 10:1 and preferably about 2:1 to about 4: 1.
[0018] The amount of the ashless rust inhibitor employed typically will be in the range of from about 0.1 to about 3.0 wt%, and preferably from 0.2 to wt%/ based on the total weight of the composition.
[0019] The lubricant composition of the invention also includes an effective amount of a polyoxyalkylene alcohol demulsifying agent. A particularly suitable polyoxyalkylene alcohol demulsifying agent is characterized by the formula (EO)x(PO)y(EO)x OH
OH
where EO is an ethylene oxide moiety, PO an propylene oxide moiety and x and y represent the relative amounts of each. A preferred demulsifying agent will have a Mn in the range of about 1700 to 3000 and an EO/PO ratio of from about 20:80 to about 1:99. Typically, the polyoxyalkylene alcohol demulsifying agent WO 03/066787 PCT/US03/02937 -6is dissolved in a solvent such as tricresyl phosphate (TCP). Especially useful is a solution comprising from 75 to 99 wt% TCP.
[0020] In general, the demulsifying agent will be used in an amount ranging from about 0.001 to about 0.1 wt% based on the total weight of the composition.
[00211 Optionally, the composition may also include one of the various types of lubricant thickeners well known in the art. An example of one such thickener is polyisobutylene. Thus, in one embodiment the composition of the invention may include 0 wt% up to about 25 wt% of a thickener.
[0022] Other conventional additives which may be used in the lubricants of this invention include oxidation inhibitors, antiwear agents, metal passivators, antifoam agents and the like.
[0023] Examples of antiwear agents, that may be used, include alkylated dithiocarbamates, alkyl phosphates, aryl phosphates, thiophosphates, amine phosphates and dithiophosphates.
[0024] The composition may include one or more metal passivators selected from alkylated benzotriazole, tolyltriatole, and dimercaptothiodiazole.
10025] One or more oxidation inhibitors also may be used in the lubricants of this invention including diphenyl amines, phenyl alpha naphthyl amines, and hindered phenolic type.
[0026] One or more antifoam agents may be used in the lubricants of this invention, including polydimethylsiloxane and polymethacrylate.
WO 03/066787 PCT/US03/02937 -7- [0027] The above mentioned additional additives are used in amounts sufficient to provide their normal function. Typical amounts for individual components in a preferred lubricant composition is given in Table 1.
TABLE 1 Component Base stock Ashless dispersant Ashless rust inhibitor Demulsifier Anti-wear agent(s) Metal passivator(s) Thickener Anti foam agent(s) Composition 2500 solvent neutral 600 solvent neutral
PIBSA-TEPA
Aromatic oxime/alkylated succinic anhydride Ethylene oxidepropylene oxide alcohol miscellaneous miscellaneous miscellaneous miscellaneous Broad wt% 1.0-99 1.0-99 0.1-5.0 0.1-3.0 0.001-0.1 0.1-5.0 0.01-1.0 0.0-25.0 0.0001-0.1 Preferred wt% 20.0 60.0 40.0 70.0 0.2 0.2- 0.005 0.05 0.5 0.05 0.20 1.0- 0.001-0.01 Examples [0028] invention.
The following examples are presented to further illustrate the Test Procedures 100291 The lubricating compositions set forth in the Tables 2 to 5 were tested according to the following procedures: WO 03/066787 PCT/US03/02937 Deposit Control Bearing Rig Test (BRT) [0030] In the BRT test, the oil is circulated through steam heated spherical roller bearings. Water is added periodically to simulate moisture contamination in service. At test completion, the bearing rollers, cage and raceways are rated for deposits using the CRC varnish rating scale.
Property Retention Test (PRT) [0031] In the PRT test, the oil is circulated with a gear pump at moderately high temperature and pressure for 2000 hours. In addition to the temperature and pressure, multimetal catalysts and periodic water contamination are used to simulate oil stress in service. The oil reservoir, the metal catalysts, and an inline screen mesh filter are observed periodically for deposits. The physical properties of the oil are also measured periodically.
Antiwear SFZG scuffing test, DIN 51354 Rust and Corrosion Protection Rust test with synthetic sea water, ASTM D665B Copper strip corrosion test, ASTM D130 SKF Emcor Rust Test, IP 220 Thin Oil Film Inhibition Test, commonly known as the TOFI test.
In the TOFI test, polished steel panels are immersed in test oil and exposed to 100% humidity at 140 0 F. The test continues until 5% of the steel panel surface is covered with rust. Many oils that pass ASTM D665B will show some rust formation in the TOFI test.
WO 03/066787 WO 0/06787PCT/UJS03102937 Water Separability *ASTM D1401 *ASTM D2711 Filterability *Pall Filtration *AFNOR Filtration, wet and dry methods Oxidation Stabilty *RBOT, ASTM D2272 (now called RPVOT) *TOST, ASTM D943 Comparative Example 1 [00321 These ashless oil compositions were formulated having the ingredients shown in Table 2. As can be seen, formulation I and 2, which include a dispersant, have poor demulsibility, whereas formulation 3, without dispersant has good demulsibility.
TABLE 2 Component Formulation Function Component Description 123 base stock solvent neutral 35 35 base stock solvent neutral bal bal bal thickener _________polyisobutylene 3.8 3.8 1.8 ashless borated polyisobutylene-phenol+ dispersant (Mannich Base) borated polyisobutylene succinic anhydride reacted tetraethylpentamine____ dispersant PIBSA-TEPA) rust inhibitor ide/carboxyl ate compound 0.5 0.5 metal passivator alkylated benzotriazole 0.05 0.05 antiwear amine phosphate 0.2 0U 0.2 -antiwear dithiocarbamate 1I I alkylated diphenylamine antioxidant amine 0.15- 0.15 10.15 TABLE 2 (cont'd) Component Formulation Function Description 1 2 3 defoamant_______ dimethylsiloxane polymner 0.0D005 0.0005 0.0005 demulsifier ethylene oxide propylene polymer diluted 10% tricresyl phosphate 0.1 0.1 0.05 Properties Tests viscosity ASTMI D445 KV @40-C, oSt 232.1 232 219.5 viscosity ASTM D445 KV 100-C, cSt 19.59 19.55 18.76 VI 96.2 96.0 195.3 metals ASTM D5I85 Metals Ca, ppm 2 2 1< 2 Zn, ppm 2 2 2 demulsibility ASTMD1401 180OF minutes to 3 7 ml water >60 >60 minutes to 3 nil emulsion >60 >60 to break >60 >60 demulsibility ASTM D2711I water in oil 0.4 0.4 1 free water, ml 0.2 21.5 38.2 water, ml 0 11.5 1.1 water, ml 0.2 33 139.3 Table 3 ___Formulation_______ Component -Function Component Description 1 2 3 4 Base Stock 2500 solvent neutral 40 40 40 40 Base Stock solvent neutral bat bal bal bat bal -Thickener ____polyisobutylene 1.5 1.5 1.5 1.5 Antiwear amine phosphate 0.2 0.1 0.1 0.1 0.1 polyisobutylene succinic anhydride reacted tetraethylpentamine Dispersant (borated PIBSA-TEPA) 0.5 polyisobutylene succinic________ anhydride reacted I tetraethylpentamine (PIIBSA-TEPA) 0.5 0.5 0.3 Table 3 (continued) Component Test Function onent Description 1 2 3 4 Antiwear dithiocarbamate I 1 I I 1 Antioxidant amine 0.15 0.15 0,15 0,15 0,IS Defoamant dimethylsiloxane polymer 0.05 0.05 0.03 Defoamnant polymethacryl ate 0.3 M ehylee oide propylene____ oxide polymer diluted 10% Demulsifier tricresyl phosphate 0.15 0.1 0.15 0.1 ___________oximine/alkylated succinic Rust inhibitor anhydride mixture 0.5 0.15 0.25 0.35 0.15 blend appearance C&B C&B C&B C&B C&B viscosity ASTM D445 KY 40-C 225,3 215.8 21 8.6 viscosity ASTM D445 IKY 100 0 C 1925 1869 18.79 VI ASTM D2270 Viscosity Index 96.5 96.4 95.9 TAN ASTM D664 TAN, mg KH/g 0.78 0.38 Table 3 (continued) Component Function Component Description 1_ 2 3 4 Metals D5185 Ca, ppm <2 2 <2 Zn, ppm <2 2 2 rust ASTM D665 ASTM Rust B Final pressur (psi) pass rust Mobil MI 180 TOFM, hours to 5% rust 648 528 -rust IP220 SKF Emcor distilled water 0-0, 0-0 IP220 SKE Emcor acid water 0-1 -demulsibility ASTMD 1401 180TF minutes to 37 ml water 10 10 20' 15 minutes to 3 ml emulsion 10 10 20 10 ______minutes to break 10 110 25 15 -dernulsibility ASTM D271 1 (EP Method) water in oil 0.2 0.2 0.3 total free water, ml 84 86 86 emulsion water, ml 2.2 1.2 0.6 water, ml 86.2 87.2 86 6 ml 0.4 0 0 WO 03/066787 PCT/US03/02937 10033] As can be seen from Table 2, ashless circulating oil formulations that include a dispersant tend to have poor demulsibility characteristics.
Example 1, Comparative Example 2 [0034] Five ashless circulating oil formulations were prepared having the ingredients and properties shown in Table 3. Formulations 1 to 4 are compositions according to this invention while formulation 5 is a comparison (Comparative Example 2) of a composition not having a demulsifier.
[0035] As can be seen, formulation 5, which does not contain a demulsifier, displays poor demulsibility characteristics. Also, compositions containing at least 0.3 wt% of the rust inhibitor display good performance in all the rust tests.
Example 3 [0036] Multiple, similar ashless circulating oil compositions were prepared having formulations in accord with the invention. The formulation of Table 4 is representative of these formulations.
WO 03/066787 WO 0/06787PCT/UJS03102937 16 TABLE 4 Component Function Base stock Base stock Rust inhibitor Dispersant Demulsifier Thickener Antiwear Antiwear Antioxidant Defoamant Metal passivator Component Description 600 solvent neutral 2500 solvent neutral oxixne/alkylated succinic anhydride mixture
PIBSA-TEPA
Ethylene oxide Propylene oxide Alcohol in TCP polyisobutylene MW 1300 amine phosphate ditbiocarbamate amine Dimethyl siloxane polymer benzotriazole Amount, wt%/ balance 39% 0.3 0% 0.1% 0.1% 0.15% 0.0002% 0.05% 100371 Typical properties for a composite of these multiple formulations is given in Table Table Test Method General Description ]Desired Value Results_ Chemical Physical Properties ASTM D445 KV@ 0C, est 198 -242 220 ASTM D445 KV 100-C, cst 17 -21 19.0 ASTM D1500 ASTM Color 5 ASTM D5185 Metals by ICP Ca, ppm 10 <2 ppm 10 <2 WO 031066787 WO 03166787PCT/US03/02937 17 Table 5 (continued) Test Method Geea escription rDesired Valu R st Filterability__ Pall Dr Pall Pass Pass Filterability Volume Filtered (ml) 2000 2000 AFNOR Filterability_____ AFNOR NF Dry AFNOR 2 max 1.1 48690 AFNOR NF Wet AFNOR 2 max 1.1 48691 Oxidation Stability Lube ASTM D943 TOST life, hours 3000 3800 ASTM RBOT (minutes) 300 420 D2272 Rust Corrosion_____ ASTM D665 ASTM Rust B Pass Pass ASTM D130 Copper corrosion_____ hours/ 100'C 2 maximum IB TOFR (Thin Oil Film Inhibition) hours to 5% rust >200 200+ IP 220 SKF Emcor Rust Test Dist. Water, brg. Rating I maximum 0-0 IAcid water, brg. Raing I maximum 0-1 Water Separability________ DMins t 302mx C ASTMDI4OI Deuslto bra 30 0 ASTM D271 1 Demulsibility j_ Total water, ml >40 41.7 WO 03/066787 WO (3106787PCT[US03/02937 Table 5 (continued) Test Method General Description [Desired Value IResults Anti-Wear Extreme Pressure ASTM D51354 IFZG Fail Stage 12 minimum 1 13 Environmental Concerns Zinc-Free Yes Yes J Yes Yes Rig Tests for Deposit Control and Lube Life Bearing Rig Test (BRT) proprietary Average rating (10 clean) 6 7.28 change KV P,40 8% 2.2% Sludge rating (10 =clean) >9.6 Property Retenition Test @70'C (PRT) proprietary ]Hours to filter 5 2000 2000 rating 2000 hours 5 8.6
Claims (12)
1. A lubricant composition comprising: a) a lubricating oil basestock; b) an effective amount of an ashless dispersant selected from the group consisting of the reaction product of a polyalkenyl succinic anhydride and a n polyamine, and said reaction product post cured with cyclic carbonate, boric acid Sor boric acid derivative; c) an effective amount of an ashless rust inhibitor comprising a mixture of an alkyl succinic anhydride and an aromatic oxime; and d) an effective amount of a polyoxyalkylene alcohol demulsifier.
2. The composition of claim 1 wherein the alkenyl group of the polyalkenyl succinic anhydride is selected from the group consisting of ethylene, propylene, butylene, isobutylene and pentene and wherein the polyamine is selected from the group consisting of ethylene diamine, diethylene triamine, triethylenetetramine and tetraethylenepentamine.
3. The composition of claim 1 wherein the alkyl succinic anhydride is represented by the formula R 0 0 where R is an alkyl group of from about 5 to about 20 carbon atoms and wherein the aromatic oxime is represented by the formula SNOH where R 1 is H or H and R 2 is an alkyl group of from about 5 to about carbon atoms.
4. The composition of claim 1 wherein the polyoxyalkylene alcohol is Q represented by the formula N (EO)x(PO)y(EO)xOH where EO is an ethylene oxide moiety, PO a propylene oxide moiety and x and y represent the relative amounts of each.
The composition of claim 3 and 4 wherein the polyalkenyl succinic anhydride is a polyisobutylene succinic anhydride having a polyisobutylene group with a Mn of from about 500 to about 2500 and wherein the polyamine is tetraethylene pentamine.
6. The composition of claim 5 wherein the molar ratio of alkenyl succinic anhydride to aromatic oxime is in the range of about 1: 1 to about 10: 1.
7. The composition of claim 6 wherein the polyoxyalkene alcohol has a molecular weight in the range of about 1700 to 3000 Mn and an EO/PO ratio of about 20:80 to about 1 :99.
8. A lubricant composition comprising: a) a lubricating oil basestock; b) from about 0.1 to about 5.0 wt of an ashless dispersant selected from the group consisting of the reaction product of a polyalkenyl succinic anhydride and a polyamine, and said reaction product post cured with cyclic carbonate, boric acid or boric acid derivative; O c) from about 0.4 to about 3.0 wt of an ashless rust inhibitor Ci comprising a mixture of an alkylsuccinic anhydride and an aromatic oxime in the molar ratio of about 1: 1 to about 10:1; and d) about 0.001 to about 0.1 wt of a polyoxyalkylene alcohol demulsifier, the wt of each component being based on the total weight of the composition.
S9. A circulating oil composition comprising: a) a basestock selected from API Group I basestocks and mixtures thereof; b) an effective amount of an ashless dispersant consisting essentially of the boric acid post cured reaction product of polyisobutylene succinic anhydride and tetraethylene pentamine; c) an effective amount of an ashless rust inhibitor comprising a mixture of an alkyl succinic anhydride wherein the alkyl group is a branched alkyl group of from 12 to 14 carbon atoms and an aromatic oxime represented by the formula OH NOH R1@ H NOH Z>- where R 1 is H or H and R 2 is an alkyl group of 5 to 15 carbon atoms; and d) an effective amount of a polyoxyalkene alcohol having the formula (EO)x(PO)y(EO)x OH where EO is an ethylene oxide moiety, PO is a propylene oxide moiety, x and y represent the relative amounts of each moiety. 0
10. The composition of claim 9 including an effective amount of at least one cI additive selected from the group consisting of antiwear agents, metal passivators, Soxidation inhibitors and anti foam agents.
11. The composition of claim 9 wherein the basestock is selected from the group consisting of API Group I, Group II, Group III, Group IV basestocks and n mixtures thereof.
12. The composition of claim 11 including an effective amount of at least one Sadditive selected from the group consisting of antiwear agents, metal passivators, C oxidation inhibitors and anti foam agents. DATED this 7th day of July 2006 EXXONMOBIL RESEARCH AND ENGINEERING COMPANY WATERMARK PATENT TRADE MARK ATTORNEYS GPO BOX 2512 PERTH WA 6001 AUSTRALIA P24339AU00
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US35441702P | 2002-02-05 | 2002-02-05 | |
| US60/354,417 | 2002-02-05 | ||
| US30103A | 2003-01-28 | 2003-01-28 | |
| USJAZ-0301 | 2003-01-28 | ||
| PCT/US2003/002937 WO2003066787A1 (en) | 2002-02-05 | 2003-01-31 | Circulating oil compositions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2003214959A1 AU2003214959A1 (en) | 2003-09-02 |
| AU2003214959B2 true AU2003214959B2 (en) | 2007-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2003214959A Expired - Fee Related AU2003214959B2 (en) | 2002-02-05 | 2003-01-31 | Circulating oil compositions |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005517743A (en) |
| AU (1) | AU2003214959B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100160191A1 (en) * | 2006-09-01 | 2010-06-24 | The Lubrizol Corporation | Lubricating Composition |
| US20090247436A1 (en) * | 2008-03-31 | 2009-10-01 | Exxonmobil Research And Engineering Company | Lubricant composition with improved varnish deposit resistance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4501616A (en) * | 1979-06-26 | 1985-02-26 | Th. Goldschmidt Ag | Lubricant and mold-release agent for the manufacture of ties |
| US5219481A (en) * | 1991-04-18 | 1993-06-15 | Imperial Chemical Industries Plc | Oxime compound, preparation and use for coating and lubricating metals |
| US5316696A (en) * | 1990-04-30 | 1994-05-31 | Imperial Chemical Industries Plc | Composition |
| US6001780A (en) * | 1998-06-30 | 1999-12-14 | Chevron Chemical Company Llc | Ashless lubricating oil formulation for natural gas engines |
| US6255263B1 (en) * | 1999-03-03 | 2001-07-03 | Ethyl Petroleum Additives, Ltd | Lubricant compositions exhibiting improved demulse performance |
-
2003
- 2003-01-31 JP JP2003566139A patent/JP2005517743A/en not_active Withdrawn
- 2003-01-31 AU AU2003214959A patent/AU2003214959B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4501616A (en) * | 1979-06-26 | 1985-02-26 | Th. Goldschmidt Ag | Lubricant and mold-release agent for the manufacture of ties |
| US5316696A (en) * | 1990-04-30 | 1994-05-31 | Imperial Chemical Industries Plc | Composition |
| US5219481A (en) * | 1991-04-18 | 1993-06-15 | Imperial Chemical Industries Plc | Oxime compound, preparation and use for coating and lubricating metals |
| US6001780A (en) * | 1998-06-30 | 1999-12-14 | Chevron Chemical Company Llc | Ashless lubricating oil formulation for natural gas engines |
| US6255263B1 (en) * | 1999-03-03 | 2001-07-03 | Ethyl Petroleum Additives, Ltd | Lubricant compositions exhibiting improved demulse performance |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003214959A1 (en) | 2003-09-02 |
| JP2005517743A (en) | 2005-06-16 |
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