NZ206931A - Grease compositions containing borated epoxide derivatives and sulphur and phosphorus-containing compounds - Google Patents

Grease compositions containing borated epoxide derivatives and sulphur and phosphorus-containing compounds

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Publication number
NZ206931A
NZ206931A NZ206931A NZ20693184A NZ206931A NZ 206931 A NZ206931 A NZ 206931A NZ 206931 A NZ206931 A NZ 206931A NZ 20693184 A NZ20693184 A NZ 20693184A NZ 206931 A NZ206931 A NZ 206931A
Authority
NZ
New Zealand
Prior art keywords
composition
grease
thickener
mixtures
sulfur
Prior art date
Application number
NZ206931A
Inventor
A G Horodysky
J A Keller
J P Doner
Original Assignee
Mobil Oil Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mobil Oil Corp filed Critical Mobil Oil Corp
Publication of NZ206931A publication Critical patent/NZ206931A/en

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    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00Lubricating 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
    • C10M169/06Mixtures of thickeners and additives
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    • C10M113/00Lubricating compositions characterised by the thickening agent being an inorganic material
    • C10M113/16Inorganic material treated with organic compounds, e.g. coated
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    • C10M115/00Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof
    • C10M115/08Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
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    • C10M117/00Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof
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    • C10M117/00Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof
    • C10M117/02Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
    • C10M117/04Lubricating compositions characterised by the thickener being a non-macromolecular carboxylic acid or salt thereof having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen containing hydroxy groups
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    • C10M135/00Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/02Sulfurised compounds
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    • C10M137/00Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04Phosphate esters
    • C10M137/10Thio derivatives
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Abstract

Grease compositions, wherein the grease is thickened with a metal hydroxyl-containing soap grease thickener are provided. Other essential ingredients of the compositions include borated hydrocarbyl epoxides and phosphorus and sulfur moieties.

Description

<div class="application article clearfix" id="description"> <p class="printTableText" lang="en">New Zealand Paient Spedficaiion for Paient Number £06931 <br><br> Priority Date(s): <br><br> 5- ?-s3 <br><br> Complete Specification Filed: /.".?&lt;£ Class: <br><br> Publication Date: ... P.O. Journal, No: <br><br> £'5 DEC'j'ggfj' <br><br> NEW ZEALAND PATENTS ACT, 1953 <br><br> No.: Date: <br><br> COMPLETE SPECIFICATION <br><br> 'j ■■?&gt;"£ . jj <br><br> GREASE COMPOSITION <br><br> &amp;/ We, MOBIL OIL CORPORATION, a corporation organised under the laws of the State of New York, United States of America, of 150 East 42nd Street, New York, State of New York, United States of America, <br><br> hereby declare the invention for which 3 / we pray that a patent may be granted to kb/us, and the method by which it is to be performed, to be particularly described in and by the following statement: - <br><br> - 1 - <br><br> (followed by page la) <br><br> 206931 <br><br> F-2341 <br><br> GREASE COMPOSITION <br><br> The invention is concerned with a novel group of compositions. It more particularly relates to a synergistic grease composition comprising grease, metal hydroxy-containing soap thickener, borated epoxide and phosphorus and sulfur moieties. j <br><br> U.5. Patent No. 4,410,438 relates to lubricant compositions, including greases, comprising borated epoxides in wnich boron is present in excess.. Also, certain other forms of epoxides have been used in lubricants, For example, U. S. 4,244,829 describes the use of epoxidized fatty acid esters as lubricity agents in lubricating oils. <br><br> In accordance with the invention, there is provided a grease composition containing (1) a metal hydroxyl-containing soap thickener, (2) a compound prepared by reacting an epoxide of the formula <br><br> 12 3 <br><br> wherein R, R , R and R are each hydrogen or a Cg to C30 j hydrocarby-1 group, at least one of which is hydrocarbyl, with at least a molar amount of boric acid, boric oxide or an alkyl borate of the formula <br><br> (R40)xB(0H)y wherein x is 1 to 3, y is 0 to 2, their sum being 3, and R4 is an alkyl group containing ftom 1 to 6 carbon atoms and (3) phosphorus and sulfur moieties. <br><br> Preferably the borated product contains more than a stoichiometric amount of boron. <br><br> The borated epoxides of the invention can be made oy reacting an epoxide with a boron compound, such as boric oxide, boric acid or an alkyl borate, or mixtures thereof. The resulting products are <br><br> 206931 <br><br> F-2341 <br><br> 2 - <br><br> primarily monoborate esters, but other possible products present are the products of reaction between epoxide dirners, or higher oligomers, and a boron compound to form the corresponding borate esters. <br><br> Included within the scope of the epoxides as set forth above, are 1,2-epoxyoctane, 1,2-epoxydecane, 1,2-epoxydodecane, 1,2-epoxytetradecane, 1,2-epoxypentadecane, 1,2-epoxyhexadecane, 1,2-epoxyheptadecane, 1,2-epoxyoctadecane, 1,2-epoxyeicosane and mixtures of such epoxides, as well as mixtures of other epoxides. <br><br> These include epoxides of mixtures of C22 £o C^g olefins and of mixtures of to C28 olefins. Also included are epoxides from dirners of octene, dirners of decene, dimers of mixed octene and decene, epoxides from decene trimers and the like. Hydrocarbyl is meant to include alkyl, aryl, cycloalkyl or cycolalkenyl groups containing from 8 to 30 carbon atoms, preferably 10 to 22 carbon atoms. Preferably, hydrocarbyl is an alkyl group. <br><br> As noted hereinabove, the boron compound used is boric acid, boric oxide or an alkyl borate, preferably boric acid. The alkyl borates include the mono-, di- and trialkyl borates, such as the mono-, di- and triethyl borates. <br><br> The reaction to form the borate ester can be carried out at from 80°C to- 260°C, preferably from 110°C to 180°C. The temperature-chosen will depend for the most part on the particular reactants and on whether or not a solvent is used. In carrying out this reaction, it is preferable that quantities of reactants be chosen sucn that the molar ratio of epoxide to boron compound be from 0.2 to 1, preferably from 0.5 to 0.9. The epoxide can be reacted with an excess of the borating species to form a borate ester containing from 0.1% by weight of boron to more than 10% of boron. <br><br> While atmospheric pressure is generally preferred, the reaction can be advantageously run at from 1 to 5 atmospheres. Furthermore, where conditions warrant it, a solvent .may be used. In general, any relatively non-polar, unreactive solvent can be used, including benzene, toluene, xylene and 1,4-dioxane. Other hydrocarbon and alcoholic solvents, which include propanol and butanol can be used. Mixtures of alcoholic and hydrocarbon solvents can be useg_also. <br><br> F-2341 <br><br> - 3 - <br><br> 206931 <br><br> i <br><br> The times for the reactions are not critical. Thus, any phase of the process can be carried out in from 1 to 20 hours. <br><br> A narrow class of thickening agents is preferred to make the grease of this invention. Included among the. preferred thickening agents are those containing at least a portion of alkali and alkaline earth metal soaps of hydroxyl-containing fatty acids, fatty glycerides and fatty esters having from 12 to - 30 carbon atoms per molecule. The metals are typified by sodium, lithium, calcium and barium. Preferred is lithium. Preferred members among these acids and fatty materials are 12-hydroxystearic acid and glycerides containing 12-hydroxystearates. <br><br> The entire amount of thickener need not be derived from the aforementioned preferred members. Significant benefit can be attained using as little thereof as - - 15% by weight of the total thickener. A complementary amount, such as up to . 85% by weight of a wide variety of thickening agents, can be used in the grease of this invention. Included among the other useful thickening agents are alkali and alkaline earth metal soaps of methyl-12-hydroxystearate, diesters of a to C^2 dicarboxylic acid and tall oil fatty acids. Other alkali or alkaline earth metal fatty acids containing from 12 to 30 carbon atoms and no free hydroxyl may be used. These include soaps of stearic and oleic acids. <br><br> Other thickening agents include salt and salt-soap complexes such as calcium stearate-acetate (U.S. Patent No. 2,197,263), barium stearate acetate (U.S. Patent No. 2,564,561), calcium, stearate-caprylate-acetate complexes (U.S. Patent No. 2,999,065), <br><br> calcium caprylate-acetate (U.S. Patent No. 2,999,066), and calcium salts and soaps of low-, intermediate- and high-molecular weight acids and of nut oil acids. <br><br> Another group of thickening agents comprises substituted ureas, phthalocyamines, indanthrene, pigments such as perylimides, pyromellitdiimides, and ammeline, as well as certain hydrophobic clays. These thickening agents can be prepared from clays which are initially hydrophilic in character, but which have been converted into a hydrophobic condition by the introduction of long-chain hydrocaron <br><br> i <br><br> 206 93 <br><br> ^=■=2351 - 4 - <br><br> radicals into the surface of the clay particles prior to their use as a component of a grease composition, as, for example, by being subjected to a preliminary treatment with an organic cationic surface active agent, such as an onium compound. Typical onium compounds are tetraalkylammonium chlorides, such as dimethyl dioctadecyl ammonium chloride, dimethyl dibenzyl ammonium chloride and mixtures thereof. This method of conversion, being well known to those skilled in the art, is believed to require no further discussion. <br><br> The third member(s) of the grease composition of the instant invention are the phosphorus and sulfur moieties. Both of these can be present in the same molecule, such as in a metal or non-metal phosphorodithioate of the formula <br><br> 5 <br><br> wherein R is a hydrocarbyl group containing 3 to 18 carbon atoms, M is a metal or non-metal, n is the valence of M and X is oxygen or sulfur. <br><br> In this compound, R"5 is preferably an alkyl group and may be a propyl, butyl, pentyl, hexyl, octyl, decyl, dodecyl, tetradecyl or octadecyl group, including those derived from isopropanol, butanol, isobutanol, sec-butanol, 4-methyl-2-pentanol, 2-ethylhexanol, oleyl alcohol, and mixtures thereof. Further included are alkaryl groups such as butylphenyl, octylphenyl, nonylphenyl and dodecylphenyl groups. <br><br> The metals covered by M include those in Groups IA, IIA, IIB and VIII of the Periodic Table. Some that may be mentioned are lithium, sodium, calcium, zinc, cadmium, silver and gold. <br><br> Non-metallic ions include organic groups derived from vinyl esters such as vinyl acetate, vinyl ethers such as butyl vinyl ether and epoxides such as propylene oxide and 1,2-epoxydodecane. <br><br> The phosphorus and sulfur can also be supplied from the combination of two separate compounds, such as the combination of (1) a dihydrocarbyl phosphite having 2 to 10 carbon atoms in each hydrocarbyl group or mixtures of phosphites and (2) a sulfide such as sulfurized isobutylene, dibenzyl disulfide, sulfurized terpenes, <br><br> X <br><br> 5 " (R;&gt;Q)2 PS <br><br> 206931 <br><br> F-2341 <br><br> - 5 - <br><br> phosphorodithionyl disulfide and sulfurized jojoba oil. The phosphites embrace the dibutyl, dihexyl, dioctyl, didecyl and similar phosphites. Phosphate esters containing 4 to 20 carbon atoms in each hydrocarbyl group, such as tributyl phosphate, tridecyl phosphate, tricresyl phosphate and mixtures of such phosphates, can also be used. <br><br> In summary, it is critical to the practice of this invention, in which greases having vastly inpiaved dropping points are obtained, <br><br> that all three of the above-mentioned ingredients be formulated into the composition. Thus: <br><br> first, with respect to the preparation of the grease, the thickener must have at least 15% by weight of a metal.or non-metal hydroxy1-containing soap therein; <br><br> second, there must be added to the grease from 0.01% to 10% by weight, preferably 0.1% to 2%, of a borated epoxide, in which the borated epoxide has been reacted with at least an equimolar amount of boron; and third, the composition must have therein from 0.01% to 10% by weight, preferably from 0.2% to 2% by weight of phosphorus- and sulfur-containing compounds or a mixture of two or more compounds which separately supply the phosphorus and sulfur moieties. If separate compounds are used, an amount of the mixture.equivalent to the above concentration levels is used to supply equimolar amounts of phosphorus and sulfur. <br><br> In general, the reaction products of the present invention may be employed in any amount which is effective for imparting the desired degree of friction reduction, antiwear activity, antioxidant activity, high temperature stability or antirust activity. In many applications, however, the borated epoxide and the phosphorus- and/or sulfur-containing compound(s) are effectively employed in combined amounts from 0.02% to 20% by weight, and preferably from 0.2% to 4% of the total weight of the composition. <br><br> The greases of the present invention can be.made from either a mineral oil or a synthetic oil, or mixtures thereof. In general, <br><br> mineral oils, both paraffinic, naphthenic and mixtures thereof, may be of any suitable lubricating viscosity range, as for example, from u'T <br><br> // ' • *' &gt;v-\ <br><br> I <br><br> t <br><br> 206931 <br><br> F-2341 - 6 - <br><br> 45 SSU at 100°F to 6000 S5U at 100DF, and preferably from 50 to 250 SSU at 210°F. These oils may have viscosity indexes ranging to 100 or higher. Viscosity indexes from 70 to 95 are preferred. The average molecular weights of these oils may range from 250 to 800. In making the grease, the lubricating oil from which it is prepared is generally employed in an amount sufficient to balance the total grease composition, after accounting for the desired quantity of the thickening agent, and other additive components to be included in the grease formulation. <br><br> In instances where synthetic oils are desired, in preference to mineral oils, various compounds of this type may be successfully utilized. Typical synthetic vehicles include polyisobutylene, polybutenes, hydrogenated polydecenes, polypropylene glycol, polyethylene glycol, trimethylol propane esters, neopentyl and pentaerythritol esters, di(2-ethylhexyl) sebacate, di(2-ethylhexyl) adipate, dibutyl phthalate, fluorocarbons, silicate esters, silanes, esters of phosphorus-containing acids, liquid ureas, ferrocene derivatives, hydrogenated synthetic oils, chain-type polyphenyIs, siloxanes and silicones (polysiloxanes), alkyl-substituted diphenyl ethers typified by a butyl-substituted bis(p-phenoxy phenyl) ether, and phenoxy phenylethers. <br><br> EXAMPLE 1 Borated 1,2-Epoxyhexadecane Approximately 1440g of 1,2-epoxyhexadecane (obtained commercially from Union Carbide), 500g of toluene and 500g of boric acid were charged to a 5 liter glass reactor equipped with heater agitator and Dean-Stark tube with condenser. The contents were heated up to 144°C with agitation until water evolution stopped. This took place over a period of about 10 hours. The solvent was removed by vacuum distillation at about 160°C, and the product was filtered at about 120°C through diatomaceous earth to yield a clear amoer fluid as an amber waxy fluid upon cooling. <br><br> ■f <br><br> 20693 <br><br> T=234±- ' - 7 - <br><br> EXAMPLE 2 <br><br> A lithium hydroxystearate grease thickener was prepared by saponification of 12-hydroxystearic acid (8%) and glyceride (9%) with lithium hydroxide monohydrate (2.5%) in a mineral oil vehicle (about 76%) at about 177°C and final pressure of about 110 psig in a closed contactor. All percentages were percentages by weight of the total weight of the thickener. <br><br> EXAMPLE 3 <br><br> After dehydrating the thickener in an open kettle, 1.4% by weight of a boron ester was added to the grease concentrate. The boron-containing ester was prepared by placing 1440 g of 1,2-epoxy-hexadecane, 500 g of toluene and 500 g of boric acid in a glass reactor equipped with heater, agitator and Dean-Stark tube with condenser. The reaction mixture was heated up to 144°C until water evolution as a result of azeotropic distillation ceased. The solvent was removed by vacuum distillation and the crude borate ester was filtered through diatomaceous earth to form a clear amber fluid which became waxy after cooling. <br><br> After the above boron additive was introduced into the grease concentrate thickener, moderate heat was applied and sufficient oil was then added to reduce the thickener content to about 9.0% and consequently the boron additive content to 1%. The boron content of the resulting grease was approximately 0.04% by weight. After cooling to 99°C, antioxidant, antirust, extreme pressure and antiwear additives including 1.5% zinc dialkyl phosphorodithioate, the dialkyl group being derived from a mixture of Cj secondary and primary alcohols, were incorporated in the grease. Results obtained in the ASTM 02265-78 grease dropping point test are shown in the following table. <br><br></p> </div>

Claims (18)

  1. <div class="application article clearfix printTableText" id="claims"> <p lang="en"> F-2m<br><br> - 8 -<br><br> Table 1<br><br> Sample<br><br> Base Grease - Dehydrated grease thickener<br><br> Example 1 - 11 " " + 1.4 wtX<br><br> borated epoxide<br><br> D2265 Dropping Point, °C.<br><br> 199°C<br><br> 257°C<br><br> Example 2 - Dehydrated grease thickener + 1.0 wt.%<br><br> borated epoxide1<br><br> + diluent mineral oil 307°C<br><br> + additive package<br><br> (containing amine antioxidant, phenolic antioxidant, metallic dithiophosphate, sulfur-containing metal deactivator and nitrogen-containing antirust additives)<br><br> Fully - Dehydrated grease thickener + diluent formulated mineral oil 193°C<br><br> base grease + normal additive package without (containing amine antioxidant, phenolic boron antioxidant, metallic dithiophosphate,<br><br> additive sulfur-containing metal deactivator and nitrogen-containing antirust additives)<br><br> The dropping point of the dehydrated thickener without borated epoxide was 199°C. Adding 1.4 wt.% of borated epoxide to the thickener increased the dropping point to 257°C. After the normal grease additive package was added to produce a finished grease, the dropping point increased further to 307°C. The dropping point of an identical, fully formulated finished grease with metallic dithiophosphate but without the borated epoxide was 193°C.<br><br> F-2341<br><br> - 9 -<br><br> 206931<br><br> WHAl-tftf'5 .CLAIM IS; Giaifltsr<br><br>
    1. A grease composition consisting essentially of (1) a major amount of a grease and a thickener, said thickener comprising at least 15% b.y weight of a metal hydroxyl-containing soap thickener, (2); from 0.01% to 10% by weight of a' reaction product made by reacting an epoxide of the formula u<br><br> A<br><br> R _ c - C - R1<br><br> 12 3<br><br> wherein R, R , R and R are each hydrogen or a hydrocarbyl group containing from 8 to 30 carbon atoms at least 1 of which is hydrocarbylor mixtures of such expoxides, with at least a molar amount of a boron compound selected from boric acid, boric oxide and an alkyl borate of the formula<br><br> (R40)xB(0H)y<br><br> A<br><br> wherein x is 1 to 3, y is 0 to 2, their sum being 3, and R is an alkyl group having 1 to 6 carbon atoms and (3) from 0.01% to<br><br> \ -10% by weight of a phosphorus-and sulfur-containing compound or a mixture of phosphorus-containing and sulfur-containing compounds to' supply a like amount of phosphorus and sulfur.<br><br>
  2. 2. The composition of Claim 1 wherein the thickener is an alkali metal or an alkaline earth metal soap of a hydroxyl-containing fatty acid, fatty glyceride or fatty ester containing 12 to 30 carbon atoms.<br><br>
  3. 3. The composition of Claim 2 wherein the metal is sodium,<br><br> lithium, calcium or barium.<br><br>
  4. 4. The composition of Claim 2 wherein the thickener is derived from 12-hydroxystearic acid.<br><br> r1^<br><br> F-2341<br><br> - 10 -<br><br> 206934<br><br>
  5. 5. The composition of Claim 1 wherein the epoxide is 1,2-epoxyoctane, 1,2-epoxydecane, 1,2-epoxydodecarie, 1,2-epoxytetradecane, 1,2-epoxypentadecane, 1,2-epoxyhexadecane, 1,2-epoxyoctadecane, 1,2-epoxyeicosane, epoxides of mixtures of C22 to Cjg olefins, epoxides of mixtures of C24 to C2g olefins,<br><br> epoxides from decene trimers or epoxides from: dirners of octene; dirners of decene; or dirners of mixed octene and decene.<br><br>
  6. 6. The composition of Claim 1 wherein the phosphorus and sulfur-containing compound is a phosphorothioate of the formula<br><br> X<br><br> 5 " (R^0)2 P S<br><br> M<br><br> wherein R5 is a hydrocarbyl group containing 3 to 18 carbon atoms, M is a metal ox non-metal, n is the valence of M and X is oxygen or sulfur.<br><br>
  7. 7. The composition of Claim 6 wherein R5 is an alkyl group.<br><br>
  8. 8. The composition of Claim 7 wherein R5 is a propyl,<br><br> butyl, pentyl, hexyl, octyl, dodecyl, tetradecyl, octadecyl or oleyl group or mixtures thereof.<br><br>
  9. 9. The composition of Claim 8 wherein R^ is derived from isopropanol, butanol, isobutanol, sec-butanol, 4-methyl-2-pentanol, 2-ethylhexanol or mixtures thereof.<br><br>
  10. 10. The composition of Claim 6 wherein M is a metal from Group IA, IIA, IIB or VIII of the Periodic Table.<br><br>
  11. 11. The composition of Claim 10 wherein the metal is lithium, sodium, calcium, zinc, cadmium or gold.<br><br>
  12. 12. The composition of Claim 6 wherein M is derived from vinyl acetate, butyl vinyl ether, propylene oxide or 1,2-epoxydodecane.<br><br> 206931<br><br> "F=2551- - 11 -<br><br>
  13. 13. The composition of Claim 1 wherein the phosphorus-containing and sulfur-containing compounds comprise a combination of (1) a dihydrocarbyl phosphite having 2 to 6 carbon atoms in each hydrocarbyl group,<br><br> mixtures of such phosphites, or a phosphate ester having 4 to 20 carbon atoms in each hydrocarbyl group and (2) a sulfide selected fiom sulfurized isobutylene, dibenzyl disulfide, sulfurized terpenes, phosphorodithionyl disulfide and sulfurized jojoba oil.<br><br>
  14. 14. The composition of Claim 13 wherein the phosphite is a dibutyl, dihexyl, dioctyl or didecyl phosphite or mixtures thereof.<br><br>
  15. 15. The composition of Claim 13 wherein the phosphate ester is a tributyl, tridecyl or tricresyl phosphate or mixtures thereof.<br><br>
  16. 16. The composition of Claim 11 wherein the epoxide is 1,2-epoxyhexadecane, the boron compound is boric acid and the phosphorus- and sulfur-containing compound is zinc dialkyl phosphorodithioate wherein the alkyl group is derived from mixed Cj secondary and Cg primary alcohols.<br><br>
  17. 17. The composition of Claim 1 wherein the grease is a mineral oil, synthetic oil or mixtures thereof.<br><br>
  18. 18. A grease composition as claimed in any one of the preceding claims substantially as herein described with reference to,,the Examples. ^<br><br> DATED THIS A?"1 DAY OQ^in lm IjAjb<br><br> 2543H/0076H* A. J. PARK &amp; SON<br><br> per<br><br> AGENTS FOR THE API" ""A MTC<br><br> </p> </div>
NZ206931A 1983-08-03 1984-01-25 Grease compositions containing borated epoxide derivatives and sulphur and phosphorus-containing compounds NZ206931A (en)

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US4582617A (en) * 1983-08-03 1986-04-15 Mobil Oil Corporation Grease composition containing borated epoxide and hydroxy-containing soap grease thickener
US4961868A (en) * 1983-01-10 1990-10-09 Mobil Oil Corporation Grease composition
US5084194A (en) * 1984-03-07 1992-01-28 Mobil Oil Corporation Grease composition
US4780227A (en) * 1984-08-22 1988-10-25 Mobil Oil Corporation Grease composition containing borated alkoxylated alcohols
US4655948A (en) * 1985-08-27 1987-04-07 Mobil Oil Corporation Grease compositions containing borated catechol compounds and hydroxy-containing soap thickeners
US4781850A (en) * 1985-08-27 1988-11-01 Mobil Oil Corporation Grease compositions containing borated catechol compounds and hydroxy-containing soap thickeners
US4828734A (en) * 1985-08-27 1989-05-09 Mobil Oil Corporation Grease compositions containing borated oxazoline compounds and hydroxy-containing soap thickeners
KR20210025753A (en) * 2019-08-27 2021-03-10 현대자동차주식회사 A lubricant composition having improved high temperature durability

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DE1256826B (en) * 1957-04-17 1967-12-21 Mobil Oil Corp Grease
AU550869B2 (en) * 1981-08-03 1986-04-10 Chevron Research Company Lubricating oil with borated long chain 1,2 alkane diol friction modifier
ZA825972B (en) * 1981-09-22 1984-03-28 Mobil Oil Corp Borated hydroxyl-containing compositions and lubricants containing same
CA1191502A (en) * 1981-10-26 1985-08-06 Vernon R. Small, Jr. Method for reducing brake noise in oil-immersed disc brakes
US4410438A (en) * 1981-12-11 1983-10-18 Mobil Oil Corporation Borated epoxides and lubricants containing same

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