EP0330523B1 - Concentrats huileux de stabilité modifiée et ayant des caractéristiques de friction modifiée - Google Patents
Concentrats huileux de stabilité modifiée et ayant des caractéristiques de friction modifiée Download PDFInfo
- Publication number
- EP0330523B1 EP0330523B1 EP89301933A EP89301933A EP0330523B1 EP 0330523 B1 EP0330523 B1 EP 0330523B1 EP 89301933 A EP89301933 A EP 89301933A EP 89301933 A EP89301933 A EP 89301933A EP 0330523 B1 EP0330523 B1 EP 0330523B1
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- EP
- European Patent Office
- Prior art keywords
- acid
- composition according
- copper
- additive
- friction modifier
- 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.)
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Definitions
- This invention relates to oil soluble additive mixtures useful in fuel and lubricating oil compositions, including concentrates containing said additives, and methods for their manufacture and use.
- the additive mixture comprises an ashless non-borated dispersant, copper antioxidant, and friction modifiers and has improved storage stability.
- friction modifiers also termed “lubricity additives”
- compositions containing polycarboxylic acid-glycol esters, ashless dispersant and certain metal lubricating oil additives has been noted in the art e.g. US-A-4105571 is directed to storage stable lubricating compositions having improved anti-friction and anti-wear properties containing a zinc dihydrocarbyldithiophosphate, an ester of a polycarboxylic acid and a glycol, and an ashless high molecular weight dispersant, wherein either the zinc or ester component, or both, are predispersed with the ashless dispersant prior to adding them to the lubricating composition.
- the friction modifying esters are disclosed to include linoleic acid dimers which are esterified with glycol such as diethylene glycol.
- European Patent 24,146 relates to lubricating compositions containing oil-soluble copper compounds in an amount sufficient to retard or inhibit oxidation of the lubricant during use (5 to 500 ppm Cu), and discloses that such lubricant compositions can further comprise from 1 to 10 wt.% ashless dispersant compounds.
- Preferred are dispersants derived from polyisobutenyl succinic anhydride and polyethylene-amines, which dispersants can be further modified with a boron compound to provide about 0.1 to 10 atomic proportions of boron per mole of the acylated nitrogen compound.
- the lubricant compositions can also contain rust inhibitors such as lecithin, sorbitan monooleate, dodecyl succinic anhydride or ethoxylated alkyl phenols; and other additives such as pour point depressants, viscosity index improvers, other antioxidants (e.g., zinc dialkyldithiophosphates), basic alkaline earth metal detergents, etc.
- rust inhibitors such as lecithin, sorbitan monooleate, dodecyl succinic anhydride or ethoxylated alkyl phenols
- other additives such as pour point depressants, viscosity index improvers, other antioxidants (e.g., zinc dialkyldithiophosphates), basic alkaline earth metal detergents, etc.
- oil-soluble copper compounds are copper dihydrocarbyl thio- or dithio-phosphates, copper salts of a synthetic or natural carboxylic acid (e.g.
- U.S. Patent 4,664,822 relates to lubricating oils compositions comprising ashless dispersant and from 0.1 to 1.5 wt% of a copper overbased metal-containing composition as dispersant/detergent, antioxidant and rust inhibitor additive. It is disclosed that the ashless dispersants may be borated, and that the lubricating compositions can contain additional conventional additives, among which are mentioned friction modifiers.
- fatty acid derivatives comprising esters such as triglycerides or monoesters from polyols esters such as glycol monooleate and pentaerythritol monooleate amides such as oleamide or amides made from polyamines or alkanolamines; and hereterocycles made by condensing compounds such as aminoguanidine with carboxylic acids to form triazoles.
- suitable friction modifiers are Mo compounds, and combinations of Na sulfonates (or Mo compounds) and glycerol monoleates and other fatty acid derivatives.
- the present invention provides an oleaginous composition
- an oleaginous composition comprising an oleaginous material selected from fuels and lubricating oils and (A) an oil-soluble nitrogen-containing ashless dispersant, (B) an oil-soluble friction modifier comprising an alcohol ester and/or a hydroxyamide derivative of a polycarboxylic acid, and (C) an oil-soluble copper antioxidant compound, the composition containing 0 to less than 30 parts per million (ppm) by weight of boron.
- compositions that is, reduced tendency to formation of sediment and haze
- boron that is, they contain 0 to less than 30 ppm by weight of boron
- oil-soluble copper antioxidants for example, copper carboxylate antioxidants, such as copper oleate and copper salts of polyalkylene substituted succinic anhydrides.
- the boron concentration of the compositions of this invention is preferably 0 to less than 20 ppm by weight, more preferably 0 to less than 10 ppm by weight. As indicated later in this specification, the boron to copper weight ratio is advantageously in the range of from 0 to 0.6:1.
- Ashless, nitrogen containing dispersants which may be used in accordance with this invention comprise boron-free members selected from the group consisting of (i) oil soluble salts, amides, imides, and oxazolines, or mixtures thereof, of long chain hydrocarbon-substituted mono or dicarboxylic acids or their acid-producing derivatives; (ii) long chain aliphatic hydrocarbon having a polyamine attached directly thereto; and (iii) Mannich condensation products formed by condensing about a molar proportion of long chain hydrocarbon-substituted phenol with about 1 to 2.5 moles of formaldehyde and about 0.5 to 2 moles of polyalkylene polyamine; wherein the long chain hydrocarbon group in (i), (ii) and (iii) is a polymer of a C2 to C10, e.g., C2 to C5 monoolefin, the polymer having a number average molecular weight of about 300 to about 5000.
- the long chain hydrocarbyl substituted mono or dicarboxylic acid material e.g. acid, anhydride, or ester
- used in accordance with the invention includes a long chain hydrocarbon, generally a polyolefin, substituted typically with an average of at least about 0.8, usefully from about 1.0 to 2.0 (e.g. 1.0 to 1.6), preferably about 1.1 to 1.4 (e.g.
- Preferred olefin polymers for reaction with the unsaturated dicarboxylic acid material are polymers comprising a major molar amount of C2 to C10, e.g. C2 to C5, monoolefin.
- Such olefins include ethylene, propylene, butylene, isobutylene, pentene, octene-1, styrene, etc.
- the polymers can be homopolymers such as polyisobutylene, as well as copolymers of two or more of such olefins such as copolymers of: ethylene and propylene; butylene and isobutylene; propylene and isobutylene; etc.
- copolymers include those in which a minor molar amount of the copolymer monomers, e.g., 1 to 10 mole %, is a C4 to C18 non-conjugated diolefin, e.g., a copolymer of isobutylene and butadiene; or a copolymer of ethylene, propylene and 1,4-hexadiene.
- the olefin polymer may be completely saturated, for example an ethylene-propylene copolymer made by a Ziegler-Natta synthesis using hydrogen as a moderator to control molecular weight.
- the olefin polymers will usually have number average molecular weights within the range of about 700 and about 5000, e.g. 700 to 3000, more usually between about 800 and about 2500, and will therefore usually have an average of from about 50 to 400 carbon atoms.
- the olefin polymer comprises a polymer of a C2 to C4 monoolefin having a molecular weight of from 700 to 5000, and the C4 to C10 monounsaturated acid material comprises an alpha- or beta-unsaturated C4 to C10 dicarboxylic acid, anhydride or ester.
- Particularly useful olefin polymers have number average molecular weights within the range of about 900 and about 2500 with approximately one terminal double bond per polymer chain.
- An especially useful starting material for a highly potent dispersant additive made in accordance with this invention is polyisobutylene.
- the olefin polymer and the dicarboxylic acid material may be simply heated together as disclosed in U.S. patents 3,361,673 and 3,401,118 to cause a thermal "ene" reaction to take place.
- the olefin polymer can be first halogenated, for example, chlorinated or brominated to about 1 to 8 wt. %, preferably 3 to 7 wt. % chlorine, or bromine, based on the weight of polymer, by passing the chlorine or bromine through the polyolefin at a temperature of 60 to 250°C, e.g.
- the halogenated polymer may then be reacted with sufficient unsaturated acid material at 100 to 250°C, usually about 180 to 220°C. for about 0.5 to 10 hours, e.g. 3 to 8 hours, so the product obtained will contain an average of about 1.0 to 2.0 moles, preferably 1.1 to 1.4 moles, e.g. 1.2 moles, of the unsaturated acid per mole of the halogenated polymer.
- Processes of this general type are taught in U.S. Patents 3,087,436; 3,172,892; 3,272,746 and others.
- the olefin polymer and the unsaturated acid material are mixed and heated while adding chlorine to the hot material.
- Processes of this type are disclosed in U.S. Patents 3,215,707; 3,231,587; 3,912,764; 4,110,349; 4,234,435; and in U.K. 1,440,219.
- halogen about 65 to 95 wt. % of the polyolefin, e.g. polyisobutylene will normally react with the dicarboxylic acid material. Upon carrying out a thermal reaction without the use of halogen or a catalyst, then usually only about 50 to 85 wt. % of the polyisobutylene will react. Chlorination helps increase the reactivity.
- all of the aforesaid functionality ratios of dicarboxylic acid producing units to polyolefin, e.g. 1.0 to 2.0, etc. are based upon the total amount of polyolefin, that is, the total of both the reacted and unreacted polyolefin, present in the resulting product formed in the aforesaid reactions.
- Amine compounds useful as nucleophilic reactants for neutralization of the hydrocarbyl substituted dicarboxylic acid material include mono-and (preferably) polyamines, most preferably polyalkylene polyamines, of about 2 to 60 (e.g. 2 to 6) , preferably 2 to 40, (e.g. 3 to 20) total carbon atoms and about 1 to 12 (e.g., 2 to 9), preferably 3 to 12, and most preferably 3 to 9 nitrogen atoms in the molecule.
- These amines may be hydrocarbyl amines or may be hydrocarbyl amines including other groups, e.g, hydroxy groups, alkoxy groups, amide groups, nitriles, imidazoline groups, and the like.
- Hydroxy amines with 1 to 6 hydroxy groups, preferably 1 to 3 hydroxy groups are particularly useful.
- Preferred amines are aliphatic saturated amines, including those of the general formulas: wherein R, R′, R ⁇ and R′′′ are independently selected from the group consisting of hydrogen; C1 to C25 straight or branched chain alkyl radicals; C1 to C12 alkoxy C2 to C6 alkylene radicals; C2 to C12 hydroxy amino alkylene radicals; and C1 to C12 alkylamino C2 to C6 alkylene radicals; and wherein R′′′ can additionally comprise a moiety of the formula: wherein R′ is as defined above, and wherein each s and s′ can be the same or a different number of from 2 to 6, preferably 2 to 4; and t and t′ can be the same or different and are each numbers of typically from 0 to 10, preferably about 2 to 7, most preferably about 3 to 7, with the proviso that t + t′ is not
- R, R′, R ⁇ , R′′′, (s), (s′), (t) and (t′) be selected in a manner sufficient to provide the compounds of formulas Ia and Ib with typically at least one primary or secondary amine group, preferably at least two primary or secondary amine groups.
- This can be achieved by selecting at least one of said R, R′, R ⁇ , or R′′′ groups to be hydrogen or by letting (t) in formula Ib be at least one when R′′′ is H or when the (Ic) moiety possesses a secondary amino group.
- the most preferred amines of the above formulas are represented by formula Ib and contain at least two primary amine groups and at least one, and preferably at least three, secondary amine groups.
- Non-limiting examples of suitable amine compounds include: 1,2-diaminoethane; 1,3-diaminopropane; 1,4-diaminobutane; 1,6-diaminohexane; polyethylene amines such as diethylene triamine; triethylene tetramine; tetraethylene pentamine; polypropylene amines such as 1,2-propylene diamine; di-(1,2-propylene)triamine; di-(1,3-propylene) triamine; N,N-dimethyl-1,3-diaminopropane; N,N-di-(2-aminoethyl) ethylene diamine; N,N-di(2-hydroxyethyl)-1,3-propylene diamine; 3-dodecylpropylamine; N-dodecyl-1,3-propane diamine; trishydroxymethylaminomethane (THAM); diisopropanol amine; diethanol amine;
- amine compounds include: alicyclic diamines such as 1,4-di(aminomethyl) cyclohexane, and heterocyclic nitrogen compounds such as imidazolines, and N-aminoalkyl piperazines of the general formula (II): wherein p1 and p2 are the same or different and are each integers of from 1 to 4, and n1, n2 and n3 are the same or different and are each integers of from 1 to 3.
- Non-limiting examples of such amines include 2-pentadecyl imidazoline; N-(2-aminoethyl) piperazine; and mixtures thereof.
- one process for preparing alkylene amines involves the reaction of an alkylene dihalide (such as ethylene dichloride or propylene dichloride) with ammonia, which results in a complex mixture of alkylene amines wherein pairs of nitrogens are joined by alkylene groups, forming such compounds as diethylene triamine, triethylenetetramine, tetraethylene pentamine and corresponding piperazines.
- alkylene dihalide such as ethylene dichloride or propylene dichloride
- ammonia such as ethylene triamine, triethylenetetramine, tetraethylene pentamine and corresponding piperazines.
- Low cost poly(ethyleneamine) compounds averaging about 5 to 7 nitrogen atoms per molecule are available commercially under trade names such as "Polyamine H", “Polyamine 400", “Dow Polyamine E-100", etc.
- Useful amines also include polyoxyalkylene polyamines such as those of the formulae: where m has a value of about 3 to 70 and preferably 10 to 35; and where "n" has a value of about 1 to 40, with the provision that the sum of all the n's is from about 3 to about 70, and preferably from about 6 to about 35, and R is a substituted saturated hydrocarbon radical of up to 10 carbon atoms, wherein the number of substituents on the R group is represented by the value of "a", which is a number from 3 to 6.
- the alkylene groups in either formula (III) or (IV) may be straight or branched chains containing about 2 to 7, and preferably about 2 to 4 carbon atoms.
- the polyoxyalkylene polyamines of formulas (III) or (IV) above may have number average molecular weights ranging from about 200 to about 4000 and preferably from about 400 to about 2000.
- the preferred polyoxyalkylene polyamines include the polyoxyethylene and polyoxypropylene diamines and the polyoxypropylene tri-amines having average molecular weights ranging from about 200 to 2000.
- the polyoxyalkylene polyamines are commercially available and may be obtained, for example, from the Jefferson Chemical Company, Inc. under the trade name "Jeffamines D-230, D-400, D-1000, D-2000, T-403", etc.
- the amine is readily reacted with the dicarboxylic acid material, e.g. alkenyl succinic anhydride, by heating an oil solution containing 5 to 95 wt. % of dicarboxylic acid material to about 100 to 200°C., preferably 125 to 175°C., generally for 1 to 10, e.g. 2 to 6 hours until the desired amount of water is removed.
- the heating is preferably carried out to favor formation of imides or mixtures of imides and amides, rather than amides and salts.
- Reaction ratios of dicarboxylic acid material to equivalents of amine as well as the other nucleophilic reactants described herein can vary considerably, depending upon the reactants and type of bonds formed.
- moles of dicarboxylic acid moiety content e.g. grafted maleic anhydride content
- nucleophilic reactant e.g. amine
- about 0.8 mole of a pentamine (having two primary amino groups and 5 equivalents of nitrogen per molecule) is preferably used to convert into a mixture of amides and imides, the product formed by reacting one mole of olefin with sufficient maleic anhydride to add 1.6 moles of succinic anhydride groups per mole of olefin, i.e. preferably the pentamine is used in an amount sufficient to provide about 0.4 mole (that is 1.6/[0.8 x 5] mole) of succinic anhydride moiety per nitrogen equivalent of the amine.
- Tris(hydroxymethyl) amino methane can be reacted with the aforesaid acid material to form amides, imides or ester type additives as taught by U.K. 984,409, or to form oxazoline compounds as described, for example, in U.S. 4,102,798; 4,116,876 and 4,113,639.
- the nitrogen-containing ashless dispersants may be used in admixture with ester-containing ashless dispersants derived from the aforesaid long chain hydrocarbon substituted dicarboxylic acid material and from hydroxy compounds such as monohydric and polyhydric alcohols or aromatic compounds such as phenols and naphthols.
- the polyhydric alcohols are the most preferred hydroxy compound and preferably contain from 2 to about 10 hydroxy radicals, for example, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, and other alkylene glycols in which the alkylene radical contains from 2 to about 8 carbon atoms.
- polyhydric alcohols include glycerol, mono-oleate of glycerol, monostearate of glycerol, monomethyl ether of glycerol, pentaerythritol, dipentaerythritol, and mixtures thereof.
- the ester dispersant may also be derived from unsaturated alcohols such as allyl alcohol, cinnamyl alcohol, propargyl alcohol, 1-cyclohexane-3-ol, and oleyl alcohol.
- unsaturated alcohols such as allyl alcohol, cinnamyl alcohol, propargyl alcohol, 1-cyclohexane-3-ol, and oleyl alcohol.
- Still other classes of the alcohols capable of yielding ester-containing dispersants comprise the ether-alcohols and amino-alcohols including, for example, the oxy-alkylene, oxy-arylene-, amino-alkylene-, and amino-arylene-substituted alcohols having one or more oxy-alkylene, amino-alkylene or amino-arylene or amino-arylene oxy-arylene radicals.
- Hydroxyamines which can be reacted with the aforesaid long chain hydrocarbon substituted dicarboxylic acid material to form dispersants include 2-amino-1-butanol, 2-amino-2-methyl-1-propanol, p-(beta-hydroxyethyl)-aniline, 2-amino-1-propanol, 3-amino-1-propanol, 2-amino-2-methyl-1,3-propane-diol, 2-amino-2-ethyl-1,3-propanediol, N-(beta-hydroxypropyl)-N'-(beta-amino-ethyl)-piperazine, tris(hydroxymethyl) amino-methane (also known as trismethylolaminomethane), 2-amino-1-butanol, ethanolamine, beta-(beta-hydroxyethoxy)-ethylamine, and the like.
- nucleophilic reactants suitable for reaction with the hydrocarbyl substituted dicarboxylic acid or anhydride includes amines and compounds of mixed amine and hydroxy containing reactive functional groups, i.e. amino-alcohols.
- a preferred group of ashless dispersants are those derived from polyisobutylene substituted with succinic anhydride groups and reacted with polyethylene amines, e.g. tetraethylene pentamine, pentaethylene hexamine, polyoxyethylene and polyoxypropylene amines, e.g. polyoxypropylene diamine, trismethylolaminomethane and pentaerythritol, and combinations thereof.
- One particularly preferred dispersant combination involves a combination of (A) polyisobutene substituted with succinic anhydride groups and reacted with (B) a hydroxy compound, e.g.
- pentaerythritol (C) a polyoxyalkylene polyamine, e.g. polyoxypropylene diamine, and (D) a polyalkylene polyamine, e.g. polyethylene diamine and tetraethylene pentamine using about 0.3 to about 2 moles each of (B) and (D) and about 0.3 to about 2 moles of (C) per mole of (A) as described in U.S. Patent No. 3,804,763.
- Another preferred dispersant combination involves the combination of (A) polyisobutenyl succinic anhydride with (B) a polyalkylene polyamine, e.g.
- tetraethylene pentamine and (C) a polyhydric alcohol or polyhydroxy-substituted aliphatic primary amine, e.g., pentaerythritol or trismethylolaminomethane as described in U.S. Patent 3,632,511.
- a polyhydric alcohol or polyhydroxy-substituted aliphatic primary amine e.g., pentaerythritol or trismethylolaminomethane as described in U.S. Patent 3,632,511.
- A(ii) Also useful as ashless nitrogen-containing dispersant in this invention are dispersants wherein a nitrogen containing polyamine is attached directly to the long chain aliphatic hydrocarbon as shown in U.S. Patents 3,275,554 and 3,565,804 where the halogen group on the halogenated hydrocarbon is displaced with various alkylene polyamines.
- Mannich base or Mannich condensation products are those containing Mannich base or Mannich condensation products as they are known in the art.
- Mannich condensation products generally are prepared by condensing about 1 mole of a high molecular weight hydrocarbyl substituted mono- or polyhydroxy benzene (e.g., having a number average molecular weight of 1,000 or greater) with about 1 to 2.5 moles of formaldehyde or paraformaldehyde and about 0.5 to 2 moles polyalkylene polyamine as disclosed, e.g., in U.S. Patents 3,442,808; 3,649,229 and 3,798,165 (the disclosure of which are hereby incorporated by reference in their entirety).
- Such Mannich condensation products may include a long chain, high molecular weight hydrocarbon on the phenol group or may be reacted with a compound containing such a hydrocarbon, e.g., polyalkenyl succinic anhydride as shown in said aforementioned U.S. Patent 3,442,808.
- a compound containing such a hydrocarbon e.g., polyalkenyl succinic anhydride as shown in said aforementioned U.S. Patent 3,442,808.
- the ashless dispersants should be free of boron-substitution so as to provide a fully formulated oleaginous composition which is substantially free of boron.
- the lubricating oil friction modifier additive comprise a friction modifying effective amount of at least one alcohol ester or hydroxyamide derivative of a carboxylic acid preferably having a total of from 24 to 90 carbon atoms and having at least 2, e.g., about 2 to 3, carboxylic acid groups per molecule.
- ester friction modifier additives are generally derived from the esterification of a polycarboxylic acid with a di- or trihydric alcohol (e.g., glycol, glycerol, oxa-alkane diols).
- a di- or trihydric alcohol e.g., glycol, glycerol, oxa-alkane diols.
- Such esters have been heretofore used in lubricating oils as friction modifiers, and the methods of preparation thereof, and structures, are described in U.S.
- hydroxyamide derivatives of such polycarboxylic acids can be prepared by condensing the acid at elevated temperature with a hydroxyamine (e.g. alkanol amines or aminoalcohols, such as ethanolamine, diethanol-amine, propanolamine, 3-amino-1,1-propanediol), employing the methods disclosed in U.S. Patent 4,557,846, which is hereby incorporated by reference in its entirety.
- a hydroxyamine e.g. alkanol amines or aminoalcohols, such as ethanolamine, diethanol-amine, propanolamine, 3-amino-1,1-propanediol
- the carboxylic acid may be an aliphatic saturated or unsaturated acid and will generally have a total of about 24 to 90, preferably about 24 to 60, carbon atoms and at least 2, e.g., about 2 to 3, preferably about 2, carboxylic acid groups with at least about 9 carbon atoms, preferably about 12 to 42, especially 16 to 22 carbon atoms between the carboxylic acid groups.
- hydroxyamide friction modifiers are oil soluble hydroxyamide compounds having the formula: wherein J1 is a hydrocarbon radical a skeleton of a dimer carboxylic acid having a total of about 24 to about 90 carbon atoms with about 9 to about 42 carbon atoms between carboxylic acid groups; Z is (a) a hydroxy substituted alkyl group having about 1 to about 20 carbon atoms, or (b) an oxyalkylene group of the formula: where A and E are each alkyl of 1 to 2 carbon atoms or hydrogen and n5 is an integer of 1 to 50; n2 is 0 or 1; n3 is 1 or 2 and n4 is 1 or 2.
- Preferred friction modifiers comprise partial esters or diesters of dicarboxylic acids of the formulas: HO-J'-OOC-J-COOH (VII), and HO-J'-OOC-J-COOJ''-OH (VIII) wherein J is a hydrocarbon radical of the acid and J' and J'' is either the hydrocarbon radical of an alkane diol or the oxy-alkylene radical from an oxa-alkane diol as defined hereinbelow. Generally about 1-3 moles of glycol, preferably 1-2 moles of glycol, are used per mole of acid to provide either a complete or partial ester.
- esters can be obtained by esterifying a dicarboxylic acid or mixture of such acids with a mixture of diols, in which case J would then be the hydrocarbon radical of the dicarboxylic acid(s) and J' and J'' would be the hydrocarbon radicals associated with the diols.
- the friction modifier additives are typically used in the lubricating oil composition in an amount of from about 0.0005 to 5, advantageously 0.0005 to 2, especially 0.01 to 5, weight percent. Preferred amounts are 0.01 to 1.5, especially 0.01 to 0.5, weight percent. In some embodiments, amounts of from about 0.001 to 0.25, and most preferably from about 0.005 to 0.1, weight percent, are advantageous.
- dimer acid esters preferably refers to those substituted cyclohexene dicarboxylic acids formed by a Diels-Alder-type reaction (which is a thermal condensation) of C18-C22 unsaturated fatty acids, such as tall oil fatty acids, which typically contain about 85 to 90 percent oleic or linoleic acids. Such dimer acids typically contain about 36 carbon atoms.
- the dimer acid structure can be generalized as follows: with two of the R2-R5 groups being carboxyl groups and two being hydrocarbon groups depending upon how the condensation of the carboxylic acid has occurred.
- dimer of linoleic acid which is the preferred embodiment can be expressed in the following formula:
- dimer acid includes products containing trimers (and higher homologues), e.g., up to about 24 percent by weight trimer, but more typically about 10 percent by weight trimer since, as is well known in the art, the dimerization reaction provides a product containing a trimer acid having molecular weight of about three times the molecular weight of the starting fatty acid.
- the polycarboxylic acids are advantageously esterified with a glycol, the glycol preferably being an alkane diol or oxa-alkane diol represented by the formula HO(R6CHCH2O) x 1H wherein R6 is H or CH3 and x1 is about 1 to 100, preferably 1 to 25, with ethylene glycol and diethylene glycol particularly preferred.
- a preferred embodiment is formation of the ester with about 1 to 2 moles of glycol per mole of dimer acid or other polycarboxylic acid, such as the ester of diethylene glycol with dimerized linoleic acid.
- Illustrative of such esters are compounds of the formula (XVI): wherein D is x1 is as defined above.
- the antioxidants useful in this invention include oil soluble copper compounds.
- the copper antioxidants used in the present invention are preferably non-overbased, that is, the selected compound is not overbased with carbon dioxide under conditions sufficient to form a copper-metal, carbonate-containing compound or complex. Therefore, the copper antioxidants are preferably characterized by a total base number (ASTM D2896) of less than 50, and most preferably less than 20.
- the copper may be blended into the oil as any suitable oil soluble copper compound.
- oil soluble we mean the compound is oil soluble under normal blending conditions in the oil or additive package.
- the copper compound may be in the cuprous or cupric form.
- the copper may be in the form of the copper dihydrocarbyl thio- or dithio-phosphates wherein copper may be substituted for zinc in the anti-wear compounds described below although one mole of cuprous or cupric oxide may be reacted with one or two moles of the dithiophosphoric acid, respectively.
- oil soluble copper dithiocarbamates of the general formula (R31R32NCSS) n Cu where n is 1 or 2 and R31 and R32 are the same or different hydrocarbyl radicals containing from 1 to 18 and preferably 2 to 12 carbon atoms and including radicals such as alkyl, alkenyl, aryl, aralkyl, alkaryl and cycloaliphatic radicals. Particularly preferred as R31 and R32 groups are alkyl groups of 2 to 8 carbon atoms.
- the radicals may, for example, be ethyl, n-propyl, i-propyl, n-butyl, i-butyl, sec-butyl, amyl, n-hexyl, i-hexyl, n-heptyl, n-octyl, decyl, dodecyl, octadecyl, 2-ethylhexyl, phenyl, butylphenyl, cyclohexyl, methylcyclopentyl, propenyl, or butenyl.
- the total number of carbon atoms i.e, R31 and R32
- Copper sulphonates, phenates, and acetylacetonates may also be used.
- a further example of useful copper antioxidants are oil soluble copper carboxylate compounds.
- the copper carboxylate compound may be added in the cuprous or cupric form, and can comprise a copper monocarboxylate or polycarboxylate, e.g., dicarboxylate, wherein the carboxylate moiety is derived from a monocarboxylic acid or polycarboxylic acid, e.g., dicarboxylic acid, of the formula: R7 - CO2H (XII) HO2CR8CO2H (XIII) wherein R7 is selected from the group consisting of alkyl, alkenyl, aryl, alkaryl, aralkyl and cycloalkyl, and wherein R8 is selected from the group consisting of alkylene, alkenylene, arylene, alkarylene and aralkylene.
- acids XII and XIII will have at least about 6 to about 35 carbon atoms, and more usually from about 12 to about 24 carbon atoms
- alkyl R7 groups are alkyls of from 5 to 34 carbon atoms, preferably 11 to 23 carbon atoms, and can be branched or straight chained, e.g., heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, hexadecyl, octadecyl, 2-methylhexyl, 3,5-ethyloctyl, polybutylenes, polypropylene and the like.
- R7 When R7 is aryl, the aryl group will generally contain from about 6 to 20 carbon atoms, e.g., phenyl, naphthyl and the like.
- R7 When R7 is alkaryl, each above aryl group can be substituted by alkyl groups, which can be branched or straight chained, and the total carbon atoms in such alkaryl groups will generally contain from about 7 to 34, preferably 11 to 23, carbon atoms.
- alkaryl groups are -Ar(CH3), -Ar(C2H5), -Ar(C9H19), -Ar(C4H9)2, -Ar(CH3)2, -Ar(C10H21), and the like, wherein "Ar” is a phenyl ring.
- R7 is alkenyl
- the alkenyl group will generally contain from 5 to 34 carbon atoms, e.g., hexenyl, heptenyl, octenyl, dodecenyl, octadecenyl, and the like.
- R7 is aralkyl
- the alkyl group which can be branched or straight chained, can contain from 1 to 28 carbon atoms, and can be substituted by from 1 to 3 (e.g., 1 or 2) aryl groups, such as those described above (e.g., phenyl).
- aryl groups such as those described above (e.g., phenyl).
- Examples of such aralkyl groups are ArCH2-, ArC2H4-, ArC8H16-, ArC9H18-, CH3CH(Ar)C6H12-, and the like.
- the cycloalkyl group will generally contain from about 3 to 18 carbon atoms, e.g., cyclohexyl, cycloheptyl, cyclooctyl, cyclodecyl, cyclododecyl and the like.
- Examples of monocarboxylic acids of formula XII are oleic acid, dodecanoic acid, naphthenic acid, linoleic acid, linolenic acid, cyclohexane carboxylic acid, phenyl acetic acid, benzoic acid, stearic acid, palmitic acid, myristic acid, lauric acid, and the like.
- R8 groups are straight chain alkylene of from 2 to 33 carbon atoms, e.g., -(CH2) x -, wherein x is an integer of from 2 to 33, and branched chain alkylenes of from 4 to 33 carbon atoms, e.g., -CH2-, -C2H4-, -C3H6-, -C8H16-, -C10H20-, -C12H24-, -C14H28-, and the like.
- R8 is alkenylene
- the arylene group When R8 is arylene, the arylene group will generally contain from 6 to 20 carbon atoms, e.g., phenylene, naphthylene, and the like.
- the arylene groups may be alkyl substituted by from 1 to 14 carbon atoms. Exemplary of such alkarylene groups are -Ar(CH3)-, -Ar(C2H5)-, -Ar(CH3)2-,-Ar(CH3)3-, and the like, wherein "Ar” is a phenyl ring.
- R8 When R8 is aralkylene, the alkylene groups as described above, can be substituted by one or more (e.g., 1-3) aryl groups, e.g., phenyl.
- dicarboxylic acids examples include phthalic acid, iso- and tere- phthalic acids, suberic acid, azelaic acid, sebacic acid, decanedioic acid, dodecanedioic acid, penta-, hepta-, hexa- and octa- decane dioic acids, and the like.
- branched carboxylic acids such as napthenic acids of molecular weight from 200 to 500 or synthetic carboxylic acids.
- the carbon atoms of the hydrocarbyl moieties of the acids of formula XII and XIII can be optionally substituted by an inert substituent, that is, a substituent which does not interfere with the acid-coppper salt formation reaction, and which does not adversely affect the antioxidant effect of the copper carboxylate compound.
- an inert substituent include halide (e.g., Cl, Br), hydroxy, thio, amido, imido, cyano, thiocyano, isothiocyano, keto, carbalkoxy and the like.
- the copper carboxylate is derived from alkanoic and alkenoic monocarboxylic acids of from 8 to 35 carbon atoms or saturated or unsaturated fatty dicarboxylic acids of from 8 to 35 carbon atoms.
- copper salts of alkanoic monocarboxylic acids of from 12 to 24 carbon atoms containing ⁇ 3 branches per chain.
- Examples of copper carboxylates include copper octanoate, copper oleate, copper dodecanoate, and the like.
- the acids from which copper carboxylates may be derived include C10 to C18 fatty acids such as stearic or palmitic, but unsaturated acids such as oleic or branched carboxylic acids such as napthenic acids of molecular weight from 200 to 500 or synthetic carboxylic acids are preferred because of the improved handling and solubility properties of the resulting copper carboxylates.
- copper (Cu I and/or Cu II ) salts of alkenyl succinic acids or anhydrides are also exemplary of useful copper compounds.
- the salts themselves may be basic, neutral or acidic. They may be formed by reacting (a) any of the materials discussed above in the Ashless Dispersant section, which have at least one free carboxylic acid (or anhydride) group with (b) a reactive metal compound.
- Suitable acid (or anhydride) reactive metal compounds include those such as cupric or cuprous hydroxides, oxides, acetates, and carbonates or basic copper carbonate.
- Examples of the metal salts of this invention are Cu salts of polyisobutenyl succinic anhydride (hereinafter referred to as Cu-PIBSA), and Cu salts of polyisobutenyl succinic acid.
- the selected metal employed is its divalent form, e.g., Cu+2.
- the preferred substrates are polyalkenyl succinic acids in which the alkenyl group has a molecular weight greater than about 700.
- the alkenyl group desirably has a M n from about 900 to 1400, and up to 2500, with a M n of about 950 being most preferred.
- PIBSA polyisobutylene succinic acid
- These materials may desirably be dissolved in a solvent, such as a mineral oil, and heated in the presence of a water solution (or slurry) of the metal bearing material. Heating may take place between 70° and about 200°C. Temperatures of 110° to 140°C are entirely adequate. It may be necessary, depending upon the salt produced, not to allow the reaction to remain at a temperature above about 140°C for an extended period of time, e.g., longer than 5 hours, or decomposition of the salt may occur.
- a solvent such as a mineral oil
- a copper carboxylate can be formed by contacting one or more of the above carboxylic acids with a copper source, such as a reactive inorganic or organic copper compound.
- a copper source such as a reactive inorganic or organic copper compound.
- Preferred copper sources are copper oxide, copper acetate, copper hydroxide, copper carbonate, and the like.
- the acid and copper source generally will be contacted for reaction in the presence of a solvent or inert reaction diluent, e.g., water or alcohol, for a time and at a temperature sufficient to effect the desired reaction.
- a solvent or inert reaction diluent e.g., water or alcohol
- any effective amount of the copper antioxidant can be incorporated into the lubricating oil composition, it is contemplated that such effective amounts be sufficient to provide said lube oil composition with an amount of the copper antioxidant of from about 5 to 500 (more preferably 10 to 200, still more preferably 10 to 180, and most preferably 20 to 130 (e.g., 90 to 120)) part per million of added copper based on the weight of the lubricating oil composition.
- the amount of copper antioxidant in this range is advantageously at least sufficient to provide a B:Cu atomic ratio of from 0 to about 0.6:1, preferably less than about 0.4:1, and most preferably less than about 0.2:1.
- the preferred amount may depend amongst other factors on the quality of the basestock lubricating oil.
- the copper antioxidants used in this invention are inexpensive and are effective at low concentrations and therefore do not add substantially to the cost of the product. The results obtained are frequently better than those obtained with previously used antioxidants, which are expensive and used in higher concentrations.
- the copper compounds can be utilized to replace part or all of the need for supplementary antioxidants. Thus, for particularly severe conditions it may be desirable to include a supplementary, conventional antioxidant. However, the amounts of supplementary antioxidant required are small, far less than the amount required in the absence of the copper compound.
- the invention also provides a process for forming a concentrate of improved storage stability useful as an oil additive which comprises: admixing at least one non-borated ashless dispersant lubricating oil additive, at least one friction modifier additive, at least one non-overbased copper antioxidant compound and an oleaginous material selected from fuels and lubricating oils for a time and under conditions sufficient to form said concentrate wherein:
- the invention also provides the use of a composition in accordance with the invention to give improved storage stability properties.
- the additive mixtures of the present invention possess very good storage stability and friction modification properties as measured herein in a wide variety of environments. Accordingly, the additive mixtures are used by incorporation and dissolution into oleaginous material such as fuels and lubricating oils.
- oleaginous material such as fuels and lubricating oils.
- a concentration of the additive in the fuel in the range of typically from about 0.001 to about 0.5, and preferably 0.001 to about 0.1 weight percent, based on the total weight of the composition, will usually be employed.
- the additive mixtures of the present invention find their primary utility in lubricating oil compositions which employ a base oil in which the additives are dissolved or dispersed.
- base oils may be natural or synthetic.
- Base oils suitable for use in preparing the lubricating oil compositions of the present invention include those conventionally employed as crankcase lubricating oils for spark-ignited and compression-ignited internal combustion engines, such as automobile and truck engines, marine and railroad diesel engines, and the like.
- Advantageous results are also achieved by employing the additive mixtures of the present invention in base oils conventionally employed in and/or adapted for use as power transmitting fluids such as automatic transmission fluids, tractor fluids, universal tractor fluids and hydraulic fluids, heavy duty hydraulic fluids, power steering fluids and the like.
- Gear lubricants, industrial oils, pump oils and other lubricating oil compositions can also benefit from the incorporation therein of the additive mixtures of the present invention.
- the additives of the present invention may be suitably incorporated into synthetic base oils such as alkyl esters of dicarboxylic acids, polyglycols and alcohols; polyalpha-olefins, alkyl benzenes, organic esters of phosphoric acids, and polysilicone oil.
- synthetic base oils such as alkyl esters of dicarboxylic acids, polyglycols and alcohols; polyalpha-olefins, alkyl benzenes, organic esters of phosphoric acids, and polysilicone oil.
- Natural base oils include mineral lubricating oils which may vary widely as to their crude source, e.g. whether paraffinic, naphthenic, mixed, paraffinic-naphthenic, and the like; as well as to their formation, e.g., distillation range, straight run or cracked, hydrofined, solvent extracted and the like.
- the natural lubricating oil base stocks which can be used in the compositions of this invention may be straight mineral lubricating oil or distillates derived from paraffinic, naphthenic, asphaltic, or mixed base crudes, or, if desired, various blended oils may be employed as well as residuals, particularly those from which asphaltic constituents have been removed.
- the oils may be refined by conventional methods using acid, alkali, and/or clay or other agents such as aluminum chloride, or they may be extracted oils produced, for example, by solvent extraction with solvents of the type of phenol, sulfur dioxide, furfural, dichlorodiethyl ether, nitrobenzene, and crotonaldehyde.
- the lubricating oil base stock conveniently has a viscosity of typically about 2.5 to about 12, and preferably about 2.5 to about 9, cst. or mm2/s at 100°C.
- the additive mixtures of this invention can be employed in a lubricating oil composition which comprises lubricating oil, typically in a major amount, and the additive mixture, typically in a minor amount, which is effective to impart enhanced dispersancy, friction modification and oxidation inhibition, relative to the absence of the additive mixture.
- a lubricating oil composition which comprises lubricating oil, typically in a major amount
- the additive mixture typically in a minor amount, which is effective to impart enhanced dispersancy, friction modification and oxidation inhibition, relative to the absence of the additive mixture.
- Additional conventional additives selected to meet the particular requirements of a selected type of lubricating oil composition can be included as desired.
- the ashless dispersants, friction modifiers and copper antioxidants employed in this invention are oil-soluble, dissolvable in oil with the aid of a suitable solvent, or are stably dispersible materials.
- Oil-soluble, dissolvable, or stably dispersible does not necessarily indicate that the materials are soluble, dissolvable, miscible, or capable of being suspended in oil in all proportions. It does mean, however, that the additives, for instance, are soluble or stably dispersible in oil to an extent sufficient to exert their intended effect in the environment in which the oil is employed.
- the additional incorporation of other additives may also permit incorporation of higher levels of a particular dispersant, friction modifier, and/or copper antioxidant, if desired.
- any effective amount of the additive mixture can be incorporated into the lubricating oil composition, it is contemplated that such effective amount be sufficient to provide said lube oil composition with an amount of the additive mixture of typically from about 0.01 to about 10 (e.g., 0.1 to 8), and preferably from about 0.2 to about 6 weight percent of the additive mixtures of this invention based on the weight of the active ashless dispersant, copper carboxylate antioxidant and friction modifier in said composition.
- the additive mixtures of this invention are used in an amount sufficient to provide fully formulated lubricating oil compositions containing from about 5 to 500 ppm oil soluble copper antioxidant compound (calculated as Cu metal), from about 0.1 to about 0.5 wt. % friction modifier compound, and from about 1 to 8 wt. % of ashless dispersant, which is substantially free of boron as described above.
- oil soluble copper antioxidant compound calculated as Cu metal
- friction modifier compound from about 1 to 8 wt. % of ashless dispersant, which is substantially free of boron as described above.
- the additives of the present invention can be incorporated into the lubricating oil in any convenient way. Thus, they can be added directly to the oil by dispersing, or dissolving the same in the oil at the desired level of concentration. Such blending can occur at room temperature or elevated temperatures (e.g., at 70 to 130°C). Alternatively, the additives may be blended with a suitable oil-soluble solvent and base oil to form a concentrate (e.g., "adpacks") , and then the concentrate may be blended with lubricating oil base stock to obtain the final formulation. Such concentrates will typically contain (on an active ingredient (A.I.) basis) from about 3 to about 45 wt. %, and preferably from about 10 to about 35 wt.
- A.I. active ingredient
- ashless dispersant additive A typically from about 0.0005 to 2 wt. %, preferably from 0.001 to 0.25 wt. %, and especially from about 0.005 to 0.1 wt. % friction modifier additive B; typically from about 0.005 to 1.0 wt. %, especially from about 0.05 to 0.2 wt. %, copper antioxidant additive C; and typically from about 30 to 90 wt. %, preferably from about 40 to 60 wt. %, base oil, based on the concentrate weight.
- Such concentrates will typically contain from about 20 to about 80%, and preferably from about 25 to about 65%, by weight total active additive (that is, ashless dispersant, friction modifier, copper antioxidant and any other added additive, described below), and typically from about 80 to about 20%, preferably from about 60 to about 20% by weight base oil, based on the concentrate weight.
- active additive that is, ashless dispersant, friction modifier, copper antioxidant and any other added additive, described below
- metal detergents will be typically present in such concentrates in an amount of from about from about 2 to 45 wt.%, and preferably from about 2 to 14 wt.%.
- the lubricating oil base stock for the additives of the present invention typically is adapted to perform a selected function by the incorportion of additives therein to form lubricating oil compositions (i.e., formulations).
- Representative additional additives typically present in such formulations include viscosity modifiers, corrosion inhibitors, other oxidation inhibitors, friction modifiers, anti-foaming agents, anti-wear agents, pour point depressants, detergents, metal rust inhibitors and the like.
- compositions of this invention can also be used with viscosity index (V.I.) improvers to form multi-grade automotive engine lubricating oils.
- Viscosity modifiers impart high and low temperature operability to the lubricating oil and permit it to remain relatively viscous at elevated temperatures and also exhibit acceptable viscosity or fluidity at low temperatures.
- Viscosity modifiers are generally high molecular weight hydrocarbon polymers including polyesters.
- the viscosity modifiers may also be derivatized to include other properties or functions, such as the addition of dispersancy properties.
- oil soluble viscosity modifying polymers will generally have number average molecular weights of from 103 to 106, preferably 104 to 106, e.g., 20,000 to 250,000, as determined by gel permeation chromatography or osmometry.
- suitable hydrocarbon polymers include homopolymers and copolymers of two or more monomers of C2 to C30, e.g., C2 to C8 olefins, including both alpha olefins and internal olefins, which may be straight or branched, aliphatic, aromatic, alkyl-aromatic, or cycloaliphatic. Frequently they will be of ethylene with C3 to C30 olefins, particularly preferred being the copolymers of ethylene and propylene.
- polystyrene e.g. with isoprene and/or butadiene and hydrogenated derivatives thereof.
- the polymer may be degraded in molecular weight, for example by mastication, extrusion, oxidation or thermal degradation, and it may be oxidized and contain oxygen.
- derivatized polymers such as post-grafted interpolymers of ethylene-propylene with an active monomer such as maleic anhydride which may be further reacted with an alcohol, or amine, e.g. an alkylene polyamine or hydroxy amine, e.g. see U.S. Patent Nos. 4,089,794; 4,160,739; 4,137,185; or copolymers of ethylene and propylene reacted or grafted with nitrogen compounds such as shown in U.S. Patent Nos. 4,068,056; 4,068,058; 4,146,489 and 4,149,984.
- the preferred hydrocarbon polymers are ethylene copolymers containing from 15 to 90 wt. % ethylene, preferably 30 to 80 wt. % of ethylene and 10 to 85 wt. %, preferably 20 to 70 wt. % of one or more C3 to C28, preferably C3 to C18, more preferably C3 to C8, alpha-olefins. While not essential, such copolymers preferably have a degree of crystallinity of less than 25 wt. %, as determined by X-ray and differential scanning calorimetry. Copolymers of ethylene and propylene are most preferred. Exemplary are the improved ethylene-propylene copolymers disclosed in EP-A-0299608.
- alpha-olefins suitable in place of propylene to form the copolymer, or to be used in combination with ethylene and propylene, to form a terpolymer, tetrapolymer, etc. include 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, etc.; also branched chain alpha-olefins, such as 4-methyl-1-pentene, 4-methyl-1-hexene, 5-methylpentene-1, 4,4-dimethyl-1-pentene, and 6-methylheptene-1, and mixtures thereof.
- Terpolymers, tetrapolymers, etc., of ethylene, said C3 ⁇ 28 alpha-olefin, and a non-conjugated diolefin or mixtures of such diolefins may also be used.
- the amount of the non-conjugated diolefin generally ranges from about 0.5 to 20 mole percent, preferably from about 1 to about 7 mole percent, based on the total amount of ethylene and alpha-olefin present.
- the polyester V.I. improvers are generally polymers of esters of ethylenically unsaturated C3 to C8 mono- and dicarboxylic acids such as methacrylic and acrylic acids, maleic acid, maleic anhydride, fumaric acid, etc.
- unsaturated esters examples include those of aliphatic saturated mono alcohols of at least 1 carbon atom and preferably of from 12 to 20 carbon atoms, such as decyl acrylate, lauryl acrylate, stearyl acrylate, eicosanyl acrylate, docosanyl acrylate, decyl methacrylate, diamyl fumarate, lauryl methacrylate, cetyl methacrylate, stearyl methacrylate, and the like and mixtures thereof.
- esters include the vinyl alcohol esters of C2 to C22 fatty or mono carboxylic acids, preferably saturated such as vinyl acetate, vinyl laurate, vinyl palmitate, vinyl stearate, vinyl oleate, and the like and mixtures thereof. Copolymers of vinyl alcohol esters with unsaturated acid esters such as the copolymer of vinyl acetate with dialkyl fumarates, can also be used.
- the esters may be copolymerized with still other unsaturated monomers such as olefins, e.g. 0.2 to 5 moles of C2 - C20 aliphatic or aromatic olefin per mole of unsaturated ester, or per mole of unsaturated acid or anhydride followed by esterification.
- unsaturated monomers such as olefins, e.g. 0.2 to 5 moles of C2 - C20 aliphatic or aromatic olefin per mole of unsaturated ester, or per mole of unsaturated acid or anhydride followed by esterification.
- olefins e.g. 0.2 to 5 moles of C2 - C20 aliphatic or aromatic olefin per mole of unsaturated ester, or per mole of unsaturated acid or anhydride followed by esterification.
- copolymers of styrene with maleic anhydride esterified with alcohols and amines
- ester polymers may be grafted with, or the ester copolymerized with, polymerizable unsaturated nitrogen-containing monomers to impart dispersancy to the V.I. improvers.
- suitable unsaturated nitrogen-containing monomers include those containing 4 to 20 carbon atoms such as amino substituted olefins as p-(beta-diethylaminoethyl)styrene ; basic nitrogen-containing heterocycles carrying a polymerizable ethylenically unsaturated substituent, e.g.
- the vinyl pyridines and the vinyl alkyl pyridines such as 2-vinyl-5-ethyl pyridine, 2-methyl-5-vinyl pyridine, 2-vinyl-pyridine, 3-vinyl-pyridine, 4-vinyl-pyridine, 3-methyl-5-vinyl-pyridine, 4-methyl-2-vinyl-pyridine, 4-ethyl-2-vinyl-pyridine and 2-butyl-5-vinyl-pyridine and the like.
- N-vinyl lactams are also suitable, e.g., N-vinyl pyrrolidones or N-vinyl piperidones.
- the vinyl pyrrolidones are preferred and are exemplified by N-vinyl pyrrolidone, N-(1-methylvinyl) pyrrolidone , N-vinyl-5-methyl pyrrolidone, N-vinyl-3,3-dimethylpyrrolidone, N-vinyl-5-ethyl pyrrolidone, and the like.
- Corrosion inhibitors also known as anti-corrosive agents, reduce the degradation of the metallic parts contacted by the lubricating oil composition.
- Illustrative of corrosion inhibitors are phosphosulfurized hydrocarbons and the products obtained by reaction of a phosphosulfurized hydrocarbon with an alkaline earth metal oxide or hydroxide, preferably in the presence of an alkylated phenol or of an alkylphenol thioester, and also preferably in the presence of carbon dioxide.
- Phosphosulfurized hydrocarbons are prepared by reacting a suitable hydrocarbon such as a terpene, a heavy petroleum fraction of a C2 to C6 olefin polymer such as polyisobutylene, with from 5 to 30 weight percent of a sulfide of phosphorus for 1/2 to 15 hours, at a temperature in the range of 65° to 315°C. Neutralization of the phosphosulfurized hydrocarbon may be effected in the manner taught in U.S. Patent No. 1,969,324.
- Oxidation inhibitors reduce the tendency of mineral oils to deteriorate in service which deterioration can be evidenced by the products of oxidation such as sludge and varnish-like deposits on the metal surfaces and by viscosity growth.
- oxidation inhibitors include alkaline earth metal salts of alkylphenol-sulfides and -thioesters having preferably C5 to C12 alkyl side chains (e.g., calcium nonylphenol sulfide, barium t-octylphenyl sulfide) di(octylphenyl)amine, phenyl-alpha-naphthylamine, phosphosulfurized or sulfurized hydrocarbons.
- Friction modifiers serve to impart the proper friction characteristics to lubricating oil compositions such as automatic transmission fluids.
- Suitable supplemental friction modifiers are found in U.S. Patent No. 3,933,659 which discloses fatty acid esters and amides; U.S. Patent No. 4,176,074 which describes molybdenum complexes of polyisobutenyl succinic anhydride-amino alkanols; U.S. Patent No. 4,105,571 which discloses glycerol esters of dimerized fatty acids; U.S. Patent No. 3,779,928 which discloses alkane phosphonic acid salts; U.S. Patent No. 3,778,375 which discloses reaction products of a phosphonate with an oleamide; U.S. Patent No.
- Rust inhibitors useful in this invention comprise nonionic surfactants such as polyoxyalkylene polyols and esters thereof. Such anti-rust compounds are known and can be made by conventional means. Nonionic surfactants, useful as anti-rust additives in the oleaginous compositions of this invention, usually owe their surfactant properties to a number of weak stabilizing groups such as ether linkages. Nonionic anti-rust agents containing ether linkages can be made by alkoxylating organic substrates containing active hydrogens with an excess of the lower alkylene oxides (such as ethylene and propylene oxides) until the desired number of alkoxy groups have been placed in the molecule.
- the preferred rust inhibitors are polyoxyalkylene polyols and derivatives thereof. This class of materials are commercially available from various sources: Pluronic Polyols from Wyandotte Chemicals Corporation; Polyglycol 112-2, a liquid triol derived from ethylene oxide and propylene oxide available from Dow Chemical Co.; and Tergitol, dodecylphenyl or monophenyl polyethylene glycol ethers, and Ucon, polyalkylene glycols and derivatives, both available from Union Carbide Corp. These are but a few of the commercial products suitable as rust inhibitors in the improved composition of the present invention.
- esters thereof obtained by reacting the polyols with various carboxylic acids are also suitable.
- Acids useful in preparing these esters are lauric acid, stearic acid, succinic ac id, and alkyl- or alkenyl-substituted succinic acids wherein the alkyl-or alkenyl group contains up to about twenty carbon atoms.
- the preferred polyols are prepared as block polymers.
- a hydroxy-substituted compound (wherein n8 is 1 to 6, and R8 is the residue of a mono- or polyhydric alcohol, phenol, naphthol, etc.) is reacted with propylene oxide to form a hydrophobic base.
- This base is then reacted with ethylene oxide to provide a hydrophylic portion resulting in a molecule having both hydrophobic and hydrophylic portions.
- the relative sizes of these portions can be adjusted by regulating the ratio of reactants, time of reaction, etc., as is obvious to those skilled in the art.
- the hydrophobic portion can be increased and/or the hydrophilic portion decreased. If greater oil-in-water emulsion breaking ability is required, the hydrophilic and/or hydrophobic portions can be adjusted to accomplish this.
- R-(OH) n Compounds illustrative of R-(OH) n include alkylene polyols such as the alkylene glycols, alkylene triols, and alkylene tetraols, such as ethylene glycol, propylene glycol, glycerol, pentaerythritol, sorbitol, mannitol, and the like.
- alkylene polyols such as the alkylene glycols, alkylene triols, and alkylene tetraols, such as ethylene glycol, propylene glycol, glycerol, pentaerythritol, sorbitol, mannitol, and the like.
- Aromatic hydroxy compounds such as alkylated mono- and polyhydric phenols and naphthols can also be used, e.g., heptylphenol, and dodecylphenol.
- demulsifiers include the esters disclosed in U.S. Patents 3,098,827 and 2,674,619.
- the liquid polyols available from Wyandotte Chemical Co. under the name Pluronic Polyols and other similar polyols are particularly well suited as rust inhibitors.
- Pluronic Polyols correspond to the formula (XIV): wherein x, y, and z are integers greater than 1 such that the CH2CH2O groups comprise from about 10% to about 40% by weight of the total molecular weight of the glycol, the average molecular weight of said glycol being from about 1000 to about 5000.
- ethylene oxide units should comprise from about 10 to about 40% by weight of the molecule.
- Those products wherein the molecular weight of the polyol is from about 2500 to 4500 and the ethylene oxide units comprise from about 10% to about 15% by weight of the molecule are particularly suitable.
- the polyols having a molecular weight of about 4000 with about 10% attributable to (CH2CH2O) units are particularly good.
- alkoxylated fatty amines, amides, alcohols and the like including such alkoxylated fatty acid derivatives treated with C9 to C16 alkyl-substituted phenols (such as the mono- and di-heptyl, octyl, nonyl, decyl, undecyl, dodecyl and tridecyl phenols), as described in U.S. Patent 3,849,501.
- Pour point depressants lower the temperature at which the fluid will flow or can be poured.
- Such depressants are well known.
- Typical of those additives which usefully optimize the low temperature fluidity of the fluid are C8-C18 dialkylfumarate vinyl acetate copolymers, polymethacrylates, and wax naphthalene.
- Foam control can be provided by an antifoamant of the polysiloxane type, e.g. silicone oil and polydimethyl siloxane.
- an antifoamant of the polysiloxane type e.g. silicone oil and polydimethyl siloxane.
- Anti-wear agents reduce wear of metal parts.
- conventional anti-wear agents are zinc dihydrocarbyldithiophosphates, e.g., wherein the hydrocarbyl groups are the same or different and are C1 to C18 (preferably C2 to C12) alkyl, alkenyl, aryl, alkaryl, aralkyl and cycloalkyl.
- Detergents and metal rust inhibitors include the metal salts of sulphonic acids, alkyl phenols, sulfurized alkyl phenols, alkyl salicylates, naphthenates and other oil soluble mono- and di-carboxylic acids.
- Highly basic (that is, overbased) metal salts such as highly basic alkaline earth metal sulfonates (especially Ca and Mg salts) are frequently used as detergents.
- the highly basic alkaline earth metal sulfonates are usually produced by heating a mixture comprising an oil-soluble alkaryl sulfonic acid with an excess of alkaline earth metal compound above that required for complete neutralization of the sulfonic and thereafter forming a dispersed carbonate complex by reacting the excess metal with carbon dioxide to provide the desired overbasing.
- the sulfonic acids are typically obtained by the sulfonation of alkyl substituted aromatic hydrocarbons such as those obtained from the fractionation of petroleum by distillation and/or extraction or by the alkylation of aromatic hydrocarbons as, for example, those obtained by alkylating benzene, toluene, xylene, naphthalene, diphenyl and the halogen derivatives such as chlorobenzene, chlorotoluene and chloronaphthalene.
- alkyl substituted aromatic hydrocarbons such as those obtained from the fractionation of petroleum by distillation and/or extraction or by the alkylation of aromatic hydrocarbons as, for example, those obtained by alkylating benzene, toluene, xylene, naphthalene, diphenyl and the halogen derivatives such as chlorobenzene, chlorotoluene and chloronaphthalene.
- the alkylation may be carried out in the presence of a catalyst with alkylating agents having from about 3 to more than 30 carbon atoms such as, for example, haloparaffins, olefins that may be obtained by dehydrogenation of paraffins, polyolefins as, for example, polymers from ethylene or propylene.
- alkaryl sulfonates usually contain from about 9 to about 70 or more carbon atoms, preferably from about 16 to about 50 carbon atoms per alkyl substituted aromatic moiety.
- the alkaline earth metal compounds which may be used in neutralizing these alkaryl sulfonic acids to provide the sulfonates includes the oxides and hydroxides, alkoxides, carbonates, carboxylate, sulfide, hydrosulfide, nitrate, and ethers or magnesium, calcium, and barium. Examples include calcium oxide, calcium hydroxide, and magnesium acetate.
- the alkaline earth metal compound is used in excess of that required to complete neutralization of the alkaryl sulfonic acids. Generally, the amount ranges from about 100 to 220%, although it is preferred to use at least 125% of the stoichiometric amount of metal required for complete neutralization.
- a preferred alkaline earth sulfonate is magnesium alkyl aromatic sulfonate having a total base number (ASTM D2896) ranging from about 300 to about 400 with the magnesium sulfonate content ranging from about 25 to about 32 wt. % based upon the total weight of the additive system dispersed in Solvent 150 Neutral Oil.
- Polyvalent metal alkyl salicylate and naphthenate materials are known additives for lubricating oil compositions to improve their high temperature performance and to counteract deposition of carbonaceous matter on pistons (U.S. Patent 2,744,069).
- An increase in reserve basicity of the polyvalent metal alkyl salicylates and naphthenates can be realized by utilizing alkaline earth metal, e.g., calcium, salts of mixtures of C8-C26 alkyl salicylates and phenates (see U.S. Patent 2,744,069) or polyvalent metal salts of alkyl salicylic acids, said acids obtained from the alkylation of phenols followed by phenation, carboxylation and hydrolysis (U.S.
- Patent 3,704,315) which could then be converted into highly basic salts by techniques generally known and used for such conversion.
- the reserve basicity of these metal-containing rust inhibitors is usefully at TBN levels of between about 60 and 150.
- Included with the useful polyvalent metal salicylate and napththenate materials are the methylene and sulfur bridged materials which are readily derived from alkyl substituted salicylic or naphthenic acids or mixtures of either or both with alkyl substituted phenols.
- Basic sulfurized salicylates and a method for their preparation is shown in U.S. Patent 3,595,791.
- the salicylate/naphthenate rust inhibitors are the alkaline earth (particularly magnesium, calcium, strontium and barium) salts of the aromatic acids having the general formula: where Ar is an aryl radical of 1 to 6 rings, R9 is an alkyl group having from about 8 to 50 carbon atoms, preferably 12 to 30 carbon atoms (optimatically about 12) , X is a sulfur (-S-) or methylene (-CH2-) bridge, y is a number from 0 to 4 and n9 is a number from 0 to 4.
- overbased methylene bridged salicylatephenate salt is readily carried out by conventional techniques such as by alkylation of a phenol followed by phenation, carboxylation, hydrolysis, methylene bridging via a coupling agent such as an alkylene dihalide followed by salt formation concurrent with carbonation.
- Overbased calcium salt of a methylene bridged phenol-salicylic acids with a TBN of 60 to 150 is representative of a rust-inhibitor highly useful in this invention.
- the sulfurized metal phenates can be considered the "metal salt of a phenol sulfide" which thus refers to a metal salt, whether neutral or basic, of a compound which can be prepared by reacting an alkyl phenol sulfide with a sufficient quantity of metal containing material to impart the desired alkalinity to the sulfurized metal phenate.
- the sulfurized alkylphenols which are useful contain from about 2 to about 14% by weight, preferably about 4 to about 12 wt. % sulfur based on the weight of sulfurized alkylphenol.
- the sulfurized alkyl phenol is converted by reaction with a metal containing material including oxides, hydroxides and complexes in an amount sufficient to neutralize said phenol and, if desired, to overbase the product to a desired alkalinity by procedures well known in the art.
- a metal containing material including oxides, hydroxides and complexes in an amount sufficient to neutralize said phenol and, if desired, to overbase the product to a desired alkalinity by procedures well known in the art.
- Preferred is a process of neutralization utilizing a solution of metal in a glycol ether.
- the neutral or normal sulfurized metal phenates are those in which the ratio of metal to phenol nucleus is about 1:2.
- the "overbased” or “basic” sulfurized metal phenates are sulfurized metal phenates wherein the ratio of metal to phenol is greater than that of stoichiometry, e.g., basic sulfurized metal dodecyl phenate has a metal content up to and greater than 100% in excess of the metal present in the corresponding normal sulfurized metal phenates wherein the excess metal is produced in oil-soluble or dispersible form (as by reaction with CO2).
- the invention therefore provides a crankcase lubricating composition also containing from 2 to 8000 parts per million of calcium or magnesium.
- the magnesium and/or calcium is generally present as basic or neutral detergents such as the sulphonates and phenates, our preferred additives are the neutral or basic magnesium or calcium sulphonates.
- the oils Preferably contain from 500 to 5000 parts per million of calcium or magnesium. Basic magnesium and calcium sulfonates are preferred.
- compositions of our invention may also contain other additives such as those previously described, and other metal containing additives, for example, those containing barium and sodium.
- the lubricating composition of the present invention may also include copper lead bearing corrosion inhibitors.
- such compounds are the thiadiazole polysulphides containing from 5 to 50 carbon atoms, their derivatives and polymers thereof.
- Preferred materials are the derivatives of 1,3,4 thiadiazoles such as those described in U.S. Patents 2,719,125; 2,719,126; and 3,087,932; especially preferred is the compound 2,5-bis (t-octadithio)-1,3,4 thiadiazole commercially available as Amoco 150.
- Other similar materials also suitable are described in U.S. Patents 3,821,236; 3,904,537; 4,097,387; 4,107,059; 4,136,043; 4,188,299; and 4,193,882.
- Suitable additives are the thio and polythio sulphenamides of thiadiazoles such as those described in U.K. Patent Specification 1,560,830. When these compounds are included in the lubricating composition, we prefer that they be present in an amount from 0.01 to 10, preferably 0.1 to 5.0 weight percent based on the weight of the composition.
- compositions containing these conventional additives are typically blended into the base oil in amounts effective to provide their normal attendant function.
- Representative effective amounts of such additives (as the respective active ingredients) in the fully formulated oil are illustrated as follows: Compositions Preferred Wt.% A.I. Broad Wt.% A.I.
- Ashless Dispersant (Component A) .01-8 .1-20 Friction Modifier (Component B) .01-1.5 .01-5 Copper Antioxidant (Component C) 10-200 ppm by wt Cu 5-500 ppm by wt Cu Viscosity Modifier .01-4 .01-12 Metal Detergents .01-3 .01-20 Corrosion Inhibitor .01-1.5 .01-5 Oxidation Inhibitor .01-1.5 .01-5 Pour Point Depressant .01-1.5 .01-5 Anti-Foaming Agents .001-0.15 .001-3 Anti-Wear Agents .001-1.5 .001-5 Mineral Oil Base Balance Balance Balance
- additive concentrates comprising concentrated solutions or dispersions of one or more of the dispersant, friction modifier compound and copper antioxidant used in the mixtures of this invention (in concentrate amounts hereinabove described), together with one or more of said other additives (said concentrate when constituting an additive mixture being referred to herein as an additive-package) whereby several additives can be added simultaneously to the base oil to form the lubricating oil composition. Dissolution of the additive concentrate into the lubricating oil may be facilitated by solvents and by mixing accompanied with mild heating, but this is not essential.
- the concentrate or additive-package will typically be formulated to contain the additives in proper amounts to provide the desired concentration in the final formulation when the additive-package is combined with a predetermined amount of base lubricant.
- the additive mixture of the present invention can be added to small amounts of base oil or other compatible solvents along with other desirable additives to form additive-packages containing active ingredients in collective amounts of typically from about 2.5 to about 90%, and preferably from about 15 to about 75%, and most preferably from about 25 to about 60% by weight additives in the appropriate proportions with the remainder being base oil.
- the final formulations may employ typically about 7 wt. % of the additive-package with the remainder being base oil.
- weight percents expressed herein are based on active ingredient (A.I.) content of the additive, and/or upon the total weight of any additive-package, or formulation which will be the sum of the A.I. weight of each additive plus the weight of total oil or diluent.
- active ingredient A.I.
- SA succinic anhydride
- PIB polyisobutylene
- PAM polyethyleneamine
- a portion of the dispersant of Part A was reacted with boric acid, then cooled and filtered to give a S150N solution containing (50% a.i.) to provide borated polyisobutenyl succinimide having a nitrogen content of about 0.97 wt. %, a boron content of about 0.25 wt. %, and 50 wt. % of unreacted PIB and mineral oil (S150N).
- ZDDP zinc dialkyl dithiophosphate anti-wear agent
- NPS nonyl phenol sulfide
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Claims (28)
- Composition d'huile comprenant une huile choisie entre des combustibles et des huiles lubrifiantes et (A) un dispersant sans cendre azoté soluble dans l'huile, (B) un additif modificateur de frottement soluble dans l'huile, qui comprend au moins un ester d'alcool ou dérivé d'hydroxamide d'un acide polycarboxylique, et (C) un anti-oxydant renfermant du cuivre, soluble dans l'huile, la composition d'huile contenant 0 à moins de 30 parties par million (ppm) de bore, en poids.
- Composition suivant la revendication 1, qui contient 0 à moins de 20 ppm de bore en poids.
- Composition suivant la revendication 1 ou la revendication 2, dans laquelle le dispersant comprend le produit de réaction, soluble dans l'huile, d'un mélange réactionnel comprenant :(a) une matière productrice d'acide dicarboxylique mono-insaturé en C₄ à C₁₀ à substituant hydrocarbyle, formée par réaction d'un polymère oléfinique d'une mono-oléfine en C₂ à C₁₀ ayant une moyenne numérique du poids moléculaire de 300 à 5000 et d'une matière du type acide mono insaturé en C₄ à C₁₀, ladite matière productrice d'acide ayant un nombre moyen d'environ 0,8 groupement producteur d'acide dicarboxylique par molécule dudit polymère oléfinique présente dans le mélange réactionnel utilisé pour former ladite matière productrice d'acide ; et(b) un corps réactionnel nucléophile choisi dans le groupe consistant en amines et aminoalcools ainsi que leurs mélanges.
- Composition suivant la revendication 3, dans laquelle le corps réactionnel nucléophile de (b) est une amine.
- Composition suivant la revendication 4, dans laquelle l'amine est une polyéthylènepolyamine, composition qui contient 0 à moins de 20 ppm de bore, en poids.
- Composition suivant l'une quelconque des revendications 3 à 5, dans laquelle, dans la matière productrice de (a), il existe un nombre moyen d'environ 1,0 à 2,0 groupements producteurs d'acide dicarboxylique par molécule du polymère oléfinique présente dans le mélange réactionnel utilisé pour former la matière productrice d'acide.
- Composition suivant l'une quelconque des revendications 3 à 6, dans laquelle le polymère oléfinique comprend un polymère d'une mono-oléfine en C₂ à C₄ ayant un poids moléculaire de 700 à 5000, et la matière du type acide mono insaturé en C₄ à C₁₀ comprend un acide, anhydride ou ester dicarboxylique en C₄ à C₁₀ alpha- ou bêta-insaturé.
- Composition suivant l'une quelconque des revendications 1 à 7, sous forme d'un fluide de transmission de puissance.
- Composition suivant l'une quelconque des revendications 1 à 8, dans laquelle le modificateur de frottement est présent dans ladite composition en une quantité de 0,0005 à 5 % en poids.
- Composition suivant l'une quelconque des revendications 1 à 8, dans laquelle le modificateur de frottement est présent dans la composition en une quantité de 0,01 à 1,5 % en poids.
- Composition suivant l'une quelconque des revendications 1 à 8, dans laquelle le modificateur de frottement est présent dans la composition en une quantité de 0,1 à 0,5 % en poids.
- Composition suivant l'une quelconque des revendications 1 à 11, dans laquelle le modificateur de frottement comprend au moins un membre du groupe consistant en des esters d'alcools et dérivés d'hydroxamide d'acides polycarboxyliques ayant un nombre total de 24 à 90 atomes de carbone et au moins environ deux groupes acide carboxylique par molécule.
- Composition suivant la revendication 12, dans laquelle l'acide polycarboxylique duquel le modificateur de frottement est dérivé a deux ou trois groupes acide carboxylique par molécule.
- Composition suivant la revendication 13, dans laquelle le modificateur de frottement comprend au moins un ester partiel ou diester de formule :
HO-J'-OOC-J-COOH, ou
HO-J'-OOC-J-COOJ''-OH
dans laquelle J représente un radical hydrocarboné d'un acide polycarboxylique saturé ou insaturé aliphatique ayant un nombre total de 24 à 90 atomes de carbone et 2 ou 3 groupes acide carboxylique par molécule avec au moins environ 9 atomes de carbone entre les groupes acide carboxylique, J' et J'' sont identiques ou differents, chacun représentant le radical hydrocarboné d'un alcanediol ou un radical oxyalkylène. - Composition suivant la revendication 12, dans laquelle l'additif modificateur de frottement comprend au moins un ester d'acide dimère.
- Composition suivant la revendication 15, dans laquelle l'acide dimère duquel l'additif modificateur de frottement est dérivé comprend au moins un acide cyclohexène dicarboxylique substitué formé par une condensation thermique de Diels-Alder d'acides gras insaturés en C₁₈ à C₂₂.
- Composition suivant la revendication 16, dans laquelle le modificateur de frottement comprend un ester de glycol d'au moins un tel dimère.
- Composition suivant la revendication 17, dans laquelle l'acide dimère est dérivé de l'acide oléique, de l'acide linoléique ou d'un de leurs mélanges.
- Composition suivant la revendication 12, dans laquelle l'additif modificateur de frottement comprend un ester de formule :
- Composition suivant l'une quelconque des revendications 1 à 19, dans laquelle l'antioxydant renfermant du cuivre est utilisé en des quantités de 5 à 500 ppm de cuivre ajouté, en poids, sous forme du ou des composés de cuivre solubles dans l'huile.
- Composition suivant la revendication 20, contenant 10 à 200 ppm du cuivre ajouté, en poids.
- Composition suivant l'une quelconque des revendications 1 à 21, dans laquelle le composé de cuivre est choisi dans le groupe consistant en sels de cuivre d'acides gras en C₁₀ à C₁₈, sels de cuivre d'acides naphténiques ayant un poids moléculaire de 200 à 500, et sels de cuivre d'anhydrides polyisobutényl-succiniques et d'acides polyisobuténylsucciniques dans lesquels ledit groupe polyalcényle est dérivé d'un polymère ayant une moyenne numérique du poids moléculaire supérieur à 700.
- Composition suivant l'une quelconque des revendications 1 à 22, dans laquelle le composé de cuivre a un indice de basicité totale inférieur à 50.
- Composition suivant l'une quelconque des revendications 1 à 23, dans laquelle le rapport pondéral B:Cu est compris dans l'intervalle de 0 à 0,6:1.
- Procédé pour former un concentré présentant une stabilité d'entreposage améliorée, utile comme additif d'huile, qui comprend : le mélange d'au moins un additif dispersant sans cendre non boraté pour huile lubrifiante, d'au moins un additif modificateur de frottement, d'au moins un composé antioxydant non surbasique renfermant du cuivre, et d'une huile choisie entre des combustibles et des huiles lubrifiantes, pendant un temps et dans des conditions, suffisants pour former ledit concentré, dans lequel :(A) l'additif dispersant pour huile lubrifiante consiste en un additif dispersant sans cendre azoté soluble dans l'huile, l'additif dispersant étant utilisé en une quantité suffisante pour fournir une concentration dudit additif dispersant de 3 à 45 % en poids dans ledit concentré ;(B) l'additif modificateur de frottement comprend un ester d'alcool ou dérivé d'hydroxamide d'un acide polycarboxylique ayant un nombre total de 24 à 90 atomes de carbone et au moins deux groupes acide carboxylique par molécule, l'additif modificateur de frottement étant utilisé en une quantité suffisante pour fournir une concentration de l'additif modificateur de frottement de 0,0005 à 2 % en poids dans le concentré ; et(C) le composé antioxydant renfermant du cuivre étant utilisé en une quantité suffisante pour fournir 0,005 à 1 % en poids de cuivre ajouté sous forme d'un ou plusieurs composés antioxydants renfermant du cuivre, solubles dans l'huile, dans le concentré, le concentré contenant 0 à moins de 30 ppm de bore, en poids.
- Procédé suivant la revendication 25, dans lequel l'additif dispersant sans cendre azoté comprend au moins un membre du groupe consistant en (i) des sels, amides, imides, oxazolines, ou leurs mélanges, solubles dans l'huile, d'acides mono- ou dicarboxyliques à substituants hydrocarbonés à chaîne longue ou de leurs anhydrides ; (ii) hydrocarbures aliphatiques à chaîne longue portant une polyamine fixée directement ; et (iii) produits de condensation de Mannich formés par condensation d'approximativement une proportion molaire d'un phénol à substituant hydrocarboné à chaîne longue avec 1 à 2,5 modes de formaldéhyde et 0,5 à 2 modes d'une polyalkylènepolyamine ; dans lequel le groupe hydrocarboné à chaîne longue dans (i), (ii) ou (iii) est un polymère d'une mono-oléfine en C₂ à C₁₀, par exemple en C₂ à C₅, le polymère ayant une moyenne numérique du poids moléculaire d'au moins 900.
- Procédé suivant la revendication 25, dans lequel est incorporé en outre au concentré au moins un additif détergent métallique comprenant au moins un sel de magnésium ou de calcium d'une substance choisie dans le groupe consistant en acides sulfoniques, alkylphénols, alkylphénols sulfurés, alkyl-salicylates et -naphténates, en une quantité de 2 à 45 % en poids dans ledit concentré.
- Utilisation d'une composition suivant l'une quelconque des revendications 1 à 24 pour conférer des propriétés améliorées de stabilité à l'entreposage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16068688A | 1988-02-26 | 1988-02-26 | |
| US160686 | 1988-02-26 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0330523A2 EP0330523A2 (fr) | 1989-08-30 |
| EP0330523A3 EP0330523A3 (en) | 1990-07-18 |
| EP0330523B1 true EP0330523B1 (fr) | 1995-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89301933A Expired - Lifetime EP0330523B1 (fr) | 1988-02-26 | 1989-02-27 | Concentrats huileux de stabilité modifiée et ayant des caractéristiques de friction modifiée |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0330523B1 (fr) |
| JP (1) | JP2753585B2 (fr) |
| AU (1) | AU3070889A (fr) |
| BR (1) | BR8900866A (fr) |
| CA (1) | CA1336902C (fr) |
| DE (1) | DE68923716T2 (fr) |
| MX (1) | MX172790B (fr) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7879775B2 (en) | 2006-07-14 | 2011-02-01 | Afton Chemical Corporation | Lubricant compositions |
| US7902133B2 (en) | 2006-07-14 | 2011-03-08 | Afton Chemical Corporation | Lubricant composition |
| AU2007206982B2 (en) * | 2006-01-18 | 2011-07-14 | Basf Se | Use of mixtures of monocarboxylic acids and polycyclic hydrocarbon compounds for improving the storage stability of fuel additive concentrates |
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| ATE146215T1 (de) * | 1991-04-19 | 1996-12-15 | Lubrizol Corp | Schmierölzusammensetzungen |
| US5490945A (en) * | 1991-04-19 | 1996-02-13 | The Lubrizol Corporation | Lubricating compositions and concentrates |
| WO1992018589A1 (fr) * | 1991-04-19 | 1992-10-29 | The Lubrizol Corporation | Compositions lubrifiantes |
| EP0709447A1 (fr) * | 1994-10-25 | 1996-05-01 | Exxon Research And Engineering Company | Composés aromatiques polycyliques pour le contrÔle amélioré des dépÔts |
| GB9807731D0 (en) * | 1998-04-09 | 1998-06-10 | Exxon Chemical Patents Inc | Oleaginous compositions |
| GB9807733D0 (en) * | 1998-04-09 | 1998-06-10 | Exxon Chemical Patents Inc | Process for preparing oleaginous compositions |
| US7635668B2 (en) * | 2004-03-16 | 2009-12-22 | The Lubrizol Corporation | Hydraulic composition containing a substantially nitrogen free dispersant |
| US20080015127A1 (en) * | 2006-07-14 | 2008-01-17 | Loper John T | Boundary friction reducing lubricating composition |
| US7906465B2 (en) | 2006-07-14 | 2011-03-15 | Afton Chemical Corp. | Lubricant compositions |
| US8003584B2 (en) | 2006-07-14 | 2011-08-23 | Afton Chemical Corporation | Lubricant compositions |
| KR20150086349A (ko) * | 2012-11-19 | 2015-07-27 | 바이오신세틱 테크놀로지스 엘엘씨 | 딜스 알더 기반 에스톨라이드 및 윤활제 조성물 |
| US11168280B2 (en) | 2015-10-05 | 2021-11-09 | Infineum International Limited | Additive concentrates for the formulation of lubricating oil compositions |
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| EP0309105A1 (fr) * | 1987-09-16 | 1989-03-29 | Exxon Chemical Patents Inc. | Additifs améliorant les propriétés antirouilles de compositions oléagineuses |
| EP0317354A1 (fr) * | 1987-11-20 | 1989-05-24 | Exxon Chemical Patents Inc. | Compositions lubrifiantes pour réduire la consommation de carburant |
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| US3180832A (en) * | 1963-03-07 | 1965-04-27 | Exxon Research Engineering Co | Oil compositions containing anti-wear additives |
| US4105571A (en) | 1977-08-22 | 1978-08-08 | Exxon Research & Engineering Co. | Lubricant composition |
| SU827536A1 (ru) * | 1979-04-23 | 1981-05-07 | Всесоюзный Научно-Исследовательский Ипроектно-Конструкторский Институтредукторостроения | Приработочное масло |
| GB2056482A (en) * | 1979-08-13 | 1981-03-18 | Exxon Research Engineering Co | Lubricating oil compositions |
| DE3163160D1 (en) * | 1980-05-08 | 1984-05-24 | Exxon Research Engineering Co | Lubricating oil composition containing sediment-reducing additive |
| US4767551A (en) * | 1985-12-02 | 1988-08-30 | Amoco Corporation | Metal-containing lubricant compositions |
| US4664822A (en) | 1985-12-02 | 1987-05-12 | Amoco Corporation | Metal-containing lubricant compositions |
| CA1327088C (fr) * | 1986-12-12 | 1994-02-15 | Malcolm Waddoups | Additifs oleosolubles pour compositions oleagineuses |
-
1989
- 1989-02-09 CA CA000590599A patent/CA1336902C/fr not_active Expired - Fee Related
- 1989-02-20 JP JP1038498A patent/JP2753585B2/ja not_active Expired - Lifetime
- 1989-02-24 BR BR898900866A patent/BR8900866A/pt unknown
- 1989-02-24 MX MX015062A patent/MX172790B/es unknown
- 1989-02-24 AU AU30708/89A patent/AU3070889A/en not_active Abandoned
- 1989-02-27 EP EP89301933A patent/EP0330523B1/fr not_active Expired - Lifetime
- 1989-02-27 DE DE68923716T patent/DE68923716T2/de not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0309105A1 (fr) * | 1987-09-16 | 1989-03-29 | Exxon Chemical Patents Inc. | Additifs améliorant les propriétés antirouilles de compositions oléagineuses |
| EP0317354A1 (fr) * | 1987-11-20 | 1989-05-24 | Exxon Chemical Patents Inc. | Compositions lubrifiantes pour réduire la consommation de carburant |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007206982B2 (en) * | 2006-01-18 | 2011-07-14 | Basf Se | Use of mixtures of monocarboxylic acids and polycyclic hydrocarbon compounds for improving the storage stability of fuel additive concentrates |
| US7879775B2 (en) | 2006-07-14 | 2011-02-01 | Afton Chemical Corporation | Lubricant compositions |
| US7902133B2 (en) | 2006-07-14 | 2011-03-08 | Afton Chemical Corporation | Lubricant composition |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0330523A2 (fr) | 1989-08-30 |
| DE68923716D1 (de) | 1995-09-14 |
| JP2753585B2 (ja) | 1998-05-20 |
| DE68923716T2 (de) | 1996-03-07 |
| AU3070889A (en) | 1989-08-31 |
| MX15062A (es) | 1993-06-01 |
| CA1336902C (fr) | 1995-09-05 |
| MX172790B (es) | 1994-01-13 |
| BR8900866A (pt) | 1989-10-17 |
| JPH01304186A (ja) | 1989-12-07 |
| EP0330523A3 (en) | 1990-07-18 |
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