US3876550A - Lubricant compositions - Google Patents

Lubricant compositions Download PDF

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Publication number
US3876550A
US3876550A US461206A US46120674A US3876550A US 3876550 A US3876550 A US 3876550A US 461206 A US461206 A US 461206A US 46120674 A US46120674 A US 46120674A US 3876550 A US3876550 A US 3876550A
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United States
Prior art keywords
sub
alkylene
lubricant composition
acid
rust
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.)
Expired - Lifetime
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US461206A
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English (en)
Inventor
Zenowie Michael Holubec
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lubrizol Corp
Original Assignee
Lubrizol Corp
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Filing date
Publication date
Priority to US461206A priority Critical patent/US3876550A/en
Application filed by Lubrizol Corp filed Critical Lubrizol Corp
Priority to FR7439360A priority patent/FR2267366B1/fr
Priority to ES432520A priority patent/ES432520A1/es
Priority to ZA00747652A priority patent/ZA747652B/xx
Priority to GB52039/74A priority patent/GB1483912A/en
Priority to CA215,445A priority patent/CA1030945A/en
Priority to JP49140591A priority patent/JPS50134005A/ja
Application granted granted Critical
Publication of US3876550A publication Critical patent/US3876550A/en
Priority to JP57036722A priority patent/JPS57164191A/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/08—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic sulfur-, selenium- or tellurium-containing compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26—Carboxylic acids; Salts thereof
    • C10M129/28—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M129/38—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
    • C10M129/42—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms polycarboxylic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/68—Esters
    • C10M129/76—Esters containing free hydroxy or carboxyl groups
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
    • C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
    • C—CHEMISTRY; METALLURGY
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    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/18—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/24—Polyethers
    • C10M145/26—Polyoxyalkylenes
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    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/02—Well-defined aliphatic compounds
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    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/02—Well-defined aliphatic compounds
    • C10M2203/022—Well-defined aliphatic compounds saturated
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    • C10M2203/02—Well-defined aliphatic compounds
    • C10M2203/024—Well-defined aliphatic compounds unsaturated
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    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/04—Well-defined cycloaliphatic compounds
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    • C10M2203/06—Well-defined aromatic compounds
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    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
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    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/102—Aliphatic fractions
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    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/104—Aromatic fractions
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    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/106—Naphthenic fractions
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    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/108—Residual fractions, e.g. bright stocks
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    • C10M2205/022—Ethene
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    • C10M2205/14—Synthetic waxes, e.g. polythene waxes
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    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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    • C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
    • C10M2207/123—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms polycarboxylic
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    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
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    • C10N2070/02—Concentrating of additives

Definitions

  • ABSTRACT [521 [LS CL 252/475; 252/56 252/47; Lubricant compositions comprising a novel additive 260/455 A combination to improve the anti-oxidant and rust- 1511 1m. (:1. Cl0m 1/38; ClOm 1/24 inhibiting PIOPerties of these Compositions are [58] Field of Search 252/33.6, 47.5, 47; closed- The additive Combination comprises an y 260/455 A ene dithiocarbamate and an aliphatic hydrocarbonsubstituted succinic acid or certain derivatives thereof. [56] References Cited Lubricant compositions containing the novel additive UNITED STATES PATENTS combination are useful in a variety of applications.
  • the subject lubricating compositions comprise a major proportion of a lubricating oil, and a minor proportion, sufficient to improve the antioxidant and rust-inhibiting properties of the composition, of an additive combination.
  • This additive combination comprises (A) one or more anti-oxidants based upon alkylene dithiocarbamates and (B) one or more rust inhibitors based upon hydrocarbon-substituted succinic acids or certain derivatives thereof.
  • the additive combination of the present invention is effectively employed in the lubricating compositions designed for a variety of uses. Likewise, the combination is effective in compositions based upon both natural and synthetic oils of lubricating viscosity. Also, the subject additive combination is effective in lubricating compositions containing additional additives.
  • lubricating compositions containing the subject additive combination are effective as crankcase lubricating oils for spark-ignited and compression-ignited internal combustion engines, including automobile and truck engines, two-cycle engine lubricants, aviation piston engines, marine and low-load diesel engines. and the like.
  • automatic transmission fluids, transaxle lubricants. gear lubricants, metal-working lubricants, hydraulic fluids, and other lubricating oil and grease compositions can benefit from the incorporation of the present additive combination therein.
  • Lubricant compositions containing the subject additive combination are particularly useful as lubricants for steam turbines.
  • Lubricant compositions designed for use. in large steam turbines are unique in that they require very careful formulation to protect the machinery from rust and corrosion under very severe conditions of use.
  • these steam turbines are used for the generation of electricity, and are of either stationary or marine installation.
  • the volume of lubricant required for a turbine can, typically, be in the range of 10,000 or 20,000 gallons of lubricant.
  • the change interval of lubricant for present day turbines is in the range of 3 to years, and it is desired to increase this interval to about years. if suitable lubricating compositions can be developed.
  • Lubricating compositions used in these turbines are continuously subjected to operating temperatures in the neighborhood of about 340F., and it is desired for increased efficiency of the turbines to use operating temperatures in the range of 600700F., if suitable lubricating compositions can be developed. Another'problem encountered in the operation of these turbines is that moisture from the steam is continuously being introduced into the lubricant.
  • the anti-oxidant component in the majority of lubricating compositions presently used for steam turbines is based upon a hindered phenol type additive. While these hindered phenols are excellent antioxidants, they suffer from the fact that they sublime under the operating temperatures employed and, ac-
  • the anti-oxidant component of the subject additive combination comprises one or more alkylene dithiocarbamates corresponding to the general formula;
  • R,, R R and R are independently radicals selected from the group consisting of hydrogen and alkyl, or R, and R taken together with the nitrogen to which they are attached are R,-,, or R and R taken together with the nitrogen to which they are attached are R wherein R and R are independently 5 or 6- membered heterocyclic groups.
  • the combined total number of carbon atoms of R R R and R, is at least about eight and X represents an alkylene radical having up to about 8 carbon atoms. This component is used in the range of from about 0.1 to about 5% by weight of the lubricant composition, with a preferred range of from about 0.25 to about 1.0%.
  • R R R and R will preferably be an alkyl radical having from 1 to about 18 carbon atoms.
  • the preferred range of carbon atoms in each of these alkyl radicals is from 1 to about 8.
  • the total number of carbon atoms in R R R and R is at least about 8 with an upper limit of about carbon atoms. However. the upper limit of the total number of carbon atoms is usually about 32.
  • R and R are, independently, heterocylic radicals selected from the group consisting of pyrrolidinyl, piperidino. morpholino, and piperazinyl.
  • the heterocyclic radicals, R and R may contain one or more, preferably one to three alkyl substituents (C -C on the heterocyclic ring.
  • R,-, or R may be Z-methylmorpholino.
  • R and R are, independently, members selected from the group consisting of pyrrolidinyl and piperidino.
  • the alkylene radical, X, in the subject dithiocarbamates may be either a straight-chain alkylene, a branched-chain alkylene, or an aromatically substituted alkylene. In general, the range of carbon atoms in this alkylene group is from 1 to about 8.
  • the preferred alkylene radical is methylene (-Cl-l-).
  • the alkylene dithiocarbamates are known in the art and several methods for their preparation are also known. The anti-oxidant activity in motor oil of various alkylene dithiocarbamates has been reported by Denton and Thompson, lnst. Petrol. Rev. 20 (230) 46-54 (1966).
  • Unsymmetrical alkylene dithiocarbamates such as ethylene (tetramethylene dithiocarbamate) (dibutyl dithiocarbamate) are conveniently prepared by suitable modification of the above procedures.
  • Such modification involves the reaction of a mixture of amines with carbon disulfide and the inorganic base to prepare the intermediate salts, i.e., the substituted dithiocarbamates.
  • the substituted dithiocarbamates derived from the mixed amines is then reacted with the appropriate dihaloalkane.
  • Another modification involves the reaction of an excess of the dihaloalkane with one substituted dithiocarbamate, isolating the resulting monoester-halide. and reacting this monoesterhalide with the other substituted dithiocarbamate.
  • the anti-rust component of the subject additive combination comprises one or more rust inhibitors selected from the group consisting of aliphatic hydrocarbonsubstituted succinic acids, aliphatic hydrocarbonsubstituted succinic anhydrides and esterified reaction products obtained by the partial esterification of the aliphatic hydrocarbon-substituted acids or their anhydrides with at least one alkylene oxide or alkylene glycol.
  • This partially esterified reaction product is prepared by the esterification of from about 0.1 mole to about 1.0 mole of the alkylene oxide or the alkylene glycol per mole of the aliphatic hydrocarbonsubstituted succinic acid or anhydride.
  • This anti-rust component of the additive combination is used in an amount sufficient to improve the rustinhibiting properties of the subject lubricant composition.
  • the amount of the anti-rust component is in the range of from about 0.01 to aboutl% by weight of the lubricant composition.
  • the preferred range of the anti-rust component is from about 0.02 to about 0.1% by weight.
  • the compounds comprising the rust inhibitor used to prepare the subject lubricating compositions are known in the art, as well as methods for their preparation.
  • aliphatic hydrocarbon-substituted succinic acids which may be used as an anti-rust component and which are the precursor acids of the anhydride and ester anti-rust components, correspond to the general formula:
  • R respresents the aliphatic hydrocarbon substituent.
  • the aliphatic hydrocabon substituent, R will have from about 6 to about aliphatic carbon atoms, with a preferred range of carbon atoms in the range of from about 8 to about 30. Accordingly, the molecular weight of the hydrocarbon substituent will, broadly, be in the range of from about 80 to about 1,150, with a preferred range of from about 1 10 to about 450.
  • This hydrocarbon substituent, R is either a saturated or a substantially saturated aliphatic hydrocarbon substituent, depending upon the preparative method used. It may contain olefinic unsaturation up to a maximum of about 5 percent olefinic linkage based upon the total number of carbon-to-carbon covalent linkages present in the substituent. Preferably, the number of olefinic linkages will not exceed about 2 percent of the total covalent linkages.
  • the hydrocarbon substituent may contain inert polar substituents provided they do not alter substantially the hydrocarbon character of the hydrocarbon substituent. Preferably, the upper limit on the percentage of polar substituent is about 10 percent by weight based upon the total weight of the hydrocarbon substituent. Exemplary polar substituents include halo, carbonyl, oxo (O), formyl, nitro, thio (-S-), etc.
  • hydrocarbon substituent depends upon the method used to prepare the acids or their anhydrides. In essence, the preparation of these acids or anhydrides involves the reaction of an olefinic aliphatic hydrocarbon compound or a halogenated olefinic aliphatic hydrocarbon compound with maleic acid.
  • alkenyl succinic acid or anhydride which may be hydrogenated to the completely saturated, alkyl succinic acid or anhydride.
  • the source of the olefinic aliphatic hydrocarbon compound used for the preparation of the aliphatic hydrocarbon-substituted succinic acids or anhydrides depends upon the molecular weight range and nature of the substituent desired.
  • a preferred source of this hydrocarbon substituent is the low molecular weight polymers of the C -C olefins. Representative examples of these lower molecular weight polymers are tetrapropylene, triisobutylene, tetraisobutylene, etc.
  • a convenient source is the substantially saturated polymers or copolymers of monoolefins having from 2 to about carbon atoms.
  • these are the higher molecular weight polymers of ethylene, propene, l-butene, isobutylene, l-octene, and 3- cyclohexyl-l-butene.
  • useful copolymers are those derived from the copolymerization of isobutene with butadiene, isobutene with chloroprene, lhexene with 1,3-hexadiene and l-octene with 1- hexene.
  • Polymers of medial olefins i.e., olefins in which the olefinic linkage is not at the terminal position, are also useful. These are illustrated by Z-butene, 3-pentene and 4-octene.
  • Other convenient sources of the higher molecular weight aliphatic hydrocarbon substituent include substantially saturated petroleum fractions, saturated aliphatic hydrocarbons derived from highly refined high molecular weight white oils, and synthetic alkanes such as those obtained by the hydrogenation of high molecular weight olefin polymers.
  • the alkylene oxides or alkylene glycols used to prepare the esterified reaction product with the above aliphatic hydrocarbon-substituted succinic acids or anhydrides will have from 2 to about 20 carbon atoms. Preferably, they will have from 2 to about 6 carbon atoms.
  • n is an integer having a value of from 1 to about 9, preferably 1 or 2.
  • polypropylene glycols correspond to the formula
  • R" or R is a methyl group and the other R is a hydrogen
  • m is aninteger'having a value of from 1 to about 6, preferablyl or 2.
  • alkylene glycols useful in the preparation of the' esterified reaction products of this invention are ethylene glycol, propylene glycol, trimethylene glycol, butylene glycol, diethylene glycol,
  • Additional useful alkylene glycols include the following: HO(CH. ,CH O) CH CH OH; HO[CH(CH )C- H O],-,CH(CH )CH OH; HO[CH- ,CH O]- [CH(CH )CH O] CH(CH )CH OH.
  • the esterified reaction product of the hydrocarbonsubstituted succinic acids or anhydrides is a partially esterified product.
  • This partially esterified product may be prepared by any of several methods known in the art. One such method consists of mixing the anhydride and the glycol in the absence ofa solvent and heating this mixture at a temperature above about C., preferably between about and 300C. for a period of time sufficient to effect the reaction.
  • a convenient preparative method involves adding the alkylene oxide portion-wise to the anhydride at a temperature within the range of from about 50 to about 100C.
  • substituted succinic acid can be used in any of the preparative methods in the place of the anhydride.
  • succinic acid readily undergoes dehydration at temperatures above about 100C. to form the anhydride, in most cases it is preferred to use the anhydride.
  • a solvent such as xylene, toluene, diphenylether, chlorobenzene, and mineral oil. Any water formed during this esterification is conveniently removed by distillation as the reaction proceeds.
  • the esterification may be conducted in the presence of a catalyst.
  • Useful esterification catalysts include sulfuric acid, pyridine hydrochloride, hydrochloric acid, benzenesulfonic acid, and p-toluenesulfonic acid.
  • the amount of catalyst used is generally in the range of from about 0.1 to about 5% by weight.
  • base oils of lubricating viscosity derived from a variety of sources are contemplated for the preparation of lubricating oil and grease compositions of the present invention.
  • the natural oils include animal oils, such as lard oil; vegetable oils, such as castor oil; and mineral oils, such as solventrefined or acid-refined mineral oils of the paraffinic and/or naphthenic type. Also base oils derived from coal or shale are useful.
  • Useful synthetic lubricating base oils include hydrocarbon oils derived from the polymerization or copolymerization of olefins, such as polypropylene, polyisobutylene and propylene-isobutylene copolymers; and the halo-hydrocarbon oils, such as chlorinated polybutylene.
  • Other useful synthetic base oils include those based upon alkyl benzenes, such as dodecylbenzene,
  • tetradecylbenzene and those based upon polyphenols, such as biphenyls, and terphenyls.
  • Another known class of synthetic oils useful as base oils for the subject lubricant compositions are those based upon alkylene oxide polymers and interpolymers. and those oils obtained by the modification of the terminal hydroxy groups of these polymers. (i.e., by the esterification or etherification of the hydroxy groups).
  • useful base oils are obtained from polymerized ethylene oxide or proplyene oxide or from the copolymers of ethylene oxide and propylene oxide.
  • Useful oils include the alkyl and aryl ethers of the polymerized alkylene oxides, such as methylpolyisopropylene glycol ether, diphenyl ether of polyethylene glycol, and diethyl ether of propylene glycol.
  • Another useful series of synthetic base oils is derived from the esterification of the terminal hydroxy group of the polymerized alkylene oxides with monoor polycarboxylic acids.
  • exemplary of this series is the acetic acid esters or mixed C C fatty acid esters or the C Oxo aciddiester of tetraethylene glycol.
  • Another suitable class of synthetic lubricating oil comprise the esters of dicarboxylic acids, such as phthalic acid, succinic acid, oleic acid, azelaic acid, suberic acid, sebacic acid, with a variety of alcohols. Specific examples of these esters include dibutyl adipate, di(2-ethylhexyl)sebacate, and the like. Silicone based oils such as polyalkyl-, polyaryl-, polyalkoxy-, or polyaryloxy-siloxane oils and the silicate oils, i.e., tetraethyl silicate, comprise another useful class of synthetic lubricants.
  • Other synthetic lubricating oils include liquid esters of phosphorus-containing acid, such as tricresyl phosphate, polymerized tetrahydrofurans, and the like.
  • the subject additive combination can be used alone or in combination with other lubricant additives known in the prior art.
  • a brief survey of conventional additives for lubricating compositions is contained in the publications, LUBRICANT ADDITIVES, by C.V. Smalheer and R. Kennedy Smith, published by the Lezius-Hiles Co.. Cleveland, Ohio (1967) and LUBRICANT ADDI- TIVES, by M.W. Ranney, published by Noyes Data Corp.. Park Ridge, NJ. 1973). These publications are incorporated herein by reference to establish the state of the art in regard to identifying both general and specific types of other additives which can be used in conjunction with the additive combination of the present invention.
  • these additional additives include detergents of the ash-containing type, ashless dispersants. viscosity index improvers, pour point depressants, antifoam agents, extreme pressure agents, anti-wear agents, other rust-inhibiting agents, other oxidation inhibitors, and corrosion inhibitors.
  • the ash-containing detergents are the well known neutral basic alkali or alkaline earth metal salts of sulfonic acids, carboxylic acids or organo-phosphoruscontaining acids.
  • the most commonly used salts of these acids are the sodium, potassium, lithium, calcium, magnesium, strontium, and barium salts.
  • the calcium and barium salts are used more extensively than the others.
  • the basic salts are those metal salts known to the art wherein the metal is present in a stoichiometrically larger amount than that necessary to neutralize the acid.
  • the calciumand bariumoverbased petrosulfonic acids are typical examples of such basic salts.
  • chlorinated aliphatic hydrocarbons such as chlorinated wax
  • organic sulfides and polysulfides such as benzyldisulfide, bis-(chlorobenzyl)disulfide, dibutyl tetrasulfide, sulfurized sperm oil, sulfurized methyl ester of oleic acid, sulfurized alkylphenol, sulfurized dipentene, sulfurized terpene, and sulfurized Diels- Alder adducts
  • phosphosulfurized hydrocarbons such as the reaction product of phosphorus sulfide with turpentine or methyloleate
  • phosphorus esters such as the dihydrocarbon and trihydrocarbon phosphites, i.e., dibutyl phosphite, diheptyl phosphite, dicylohexyl
  • ashless detergents or dispersants are a well known class of lubricant additives and are extensively discussed and exemplified in the above-cited publications by Smalheer et a1. and Ranney and the references cited therein.
  • Particularly useful types of ashless dispersants are based upon the reaction products of hydrocarbon-substituted succinic acid compounds and polyamines or polyhydric alcohols. These reaction products may be post-treated with materials, such as alkylene oxides, carboxylic acids, boron compounds, carbon disulfide and alkenyl cyanides to produce further useful ashless dispersants.
  • Pour point depressing agents are illustrated by the polymers of ethylene, propylene, isobutylene, and poly- (alkyl methacrylate).
  • Anti-foam agents include polymeric alkyl siloxanes, poly(alkyl methacrylates), terpolymers of diacetone acrylamide and alkyl acrylates or methacrylates, and the condensation products of alkyl phenols with formaldehyde and an amide.
  • Viscosity index improvers include polymerized and copolymerized alkyl 'methacrylates and polyisobutylenes.
  • additives When additional additives are used in lubricant compositions comprising the subject additive combination, they are used in concentrations in which they are normally employed in the art. Thus, they will generally be used in a concentration of from about 0.001 up to about 25% by weight of total composition, depending,
  • ashless dispersants can be employed in amounts from about 0.1 to about 10% and metal-containing detergents can be employed in amounts from about 0.1 to about 20% by weight.
  • Other additives such as pour point depressants, extreme pressure additives, viscosity index improving agents, anti-foaming agents, and the like, are normally employed in amounts of from about 0.001 to about 10% by weight of the total composition, depending upon the nature and purpose of the particular additive.
  • a lubricating composition suitable for use as a steam turbine lubricating oil is prepared using a 200 N base mineral oil, 0.05% of an oil solution (37% oil) of a partially esterified dodecenyl succinic acid. 1% of methylene bis(dibutyldithiocarbamate), and 200 ppm of a conventional anti-foaming agent based upon a polymer of 2-ethylhexyl acrylate and ethyl acrylate.
  • the partially esterified dodecenyl succinic acid used above is prepared by treating 95 parts by weight of a 61% oil solution of dodecenyl succinic acid with parts by weight of propylene oxide.
  • methylene bis(dibutyldithiocarbamate) used above is prepared by the reaction of dibutylamine, carbon disulfide, sodium hydroxide and methylene dichloride.
  • the mixture is heated for an additional 2 hours at a temperature in the range of 6065C.
  • the mixture is then washed with four 150 ml portions of water and the last traces of volatile material are stripped from the reaction mixture using a vacuum of about 120 mm Hg at a temperature of about 122C.
  • EXAMPLE 2-A When the partially esterified dodecenyl succinic acid used above is replaced with the reaction product (0.25:1 mole) of 1,2-butylene oxide and dodecenyl succinic anhydride; or the reaction product (0.111 mole) of dipropylene glycol and hexadecyl succinic anhydride; or the reaction product (0.221 mole) of ethylene oxide and a polyisobutenyl succinic anhydride,
  • polyisobutenyl substituent has about 24 aliphatic carbon atoms; or a polypropylene succinic acid, wherein the polypropylene substituent has about 60 aliphatic carbon atoms; suitable lubricating compositions are obtained.
  • a lubricating composition suitable for use as a steam turbine lubricating oil is prepared using a 200 N base mineral oil, 0.05% of the oil solution of the partially esterifled dodecenyl succinic acid used in Example 1, and 1% by weight of ethylidene bis(dibutyldithiocarbamate).
  • the ethylidene bis(dibutyldithiocarbamate) used above is prepared by a process analogous to that used to prepare the anti-oxidant component in Example 1 using di-n-butyla'mine, carbon disulfide, sodium hydroxide, and ethylidene dichloride.
  • a lubricating composition suitable for use as a gear oil is prepared using a SAE 90 base mineral oil, 0.5% of zinc Z-ethylhexylisobutyl phosphorodithioate as a combination extreme pressure agent and oxidation inhibitor, 0.1% of the partially esterified dodecenyl succinic acid of Example 1, 1.6% (0.5% sulfur) of methylene bis(dibutyldithiocarbamate), and 200 ppm of the anti-foam agent of Example 1.
  • EXAMPLE 4-A When the partially esterified dodecenyl succinic acid used above is replaced with the reaction product (0.311 mole) of trimethylene glycol and a polyisobutenyl succinic anhydride, wherein the polyisobutenyl substituent has about aliphatic carbon atoms; or the reaction product (0.921 mole) of propylene glycol and a diisobutylene succinic anhydride; or a poly(ethylenepropylene )substituted succinic acid, wherein the poly(- ethylene-propylene)substituent has about 30 aliphatic carbon atoms; or the reaction product 1:1 mole) of an alkylene glycol corresponding to the formula HO[CH CH. ,O] -lCH(CH )CH O] CH(CH )Cl-l OH and dodecenyl succinic anhydride; suitable lubricating compositions are obtained.
  • a lubricating composition suitable for use as a crankcase lubricant is prepared using a 10W-40 mineral lubricating oil base and, as additives, 8.8% of a polyisodecylacrylate viscosity index improver; 2.92% of an ashless dispersant, which is the reaction product (1:2 eq.) of a polyisobutenyl succinic anhydride and tetraethylene pentamine prepared according to the procedure of US. Pat. No. 3,127,892; 3.05% of a dispersant which is the reaction product (1:1 eq) of a polyisobutenyl succinic anhydride and tetraethylene pentamine and boric acid as described in US. Pat.
  • a dispersant which is the reaction product (1:1 eq) of a polyisobutenyl succinic anhydride and pentaerythritol; 0.56% of a 61% solution of dodecenyl succinic acid in oil; 1.50% of methylene bis(dibutyldithiocarbamate); 0.78% of a commercial hindered phenol based anti-oxidant; and 40 ppm of an anti-foaming agent.
  • EXAMPLE -A When the methylene bis(dibutyldithiocarbamate) used in the above formulation is replaced with methylene bis(tetramethylenedithiocarbamate), or ethylene (tertramethylenedithiocarbamate pentamethylenedithiocarbamate or 1,4- butylene(pentamethylenedithiocarbamate)(di-nbutyldithiocarbamate), or benzylidene bis(pentamethylenedithiocarbamate), or methylene (4- morpholinecarbodithioate l-piperazinecarbodithioate), suitable lubricating compositions are obtained.
  • a lubricating composition suitable for use as a crankcase lubricant is prepared using a W-40 mineral lubricating oil base, and, as additives, 8.8% of a polyisodecylacrylate viscosity improving agent; 2.92% of the ashless dispersant of Example 5; 3.05% of the boron-containing dispersant of Example 5; 1.57% of a dispersant based upon the reaction product of a chlorinated polyisobutene, acrylic acid, tetraethylene pentamine and phthalic acid; 0.56% of a 61% solution of dodecenyl succinic acid in oil; 0.78% of a commercial hindered phenol anti-oxidant; 0.75% of methylene bis(dibutyldithiocarbamate); and 40 ppm of a conventional anti-foaming agent.
  • EXAMPLE 7 A suitable crankcase lubricating composition is obtained when the 0.75% of methylene bis(dibutyldithiocarbamate) in the composition of Example 6 is replaced with 1.5% of methylene bis(dibutyldithiocarbamate).
  • a lubricating composition suitable for use as a crankcase lubricant is prepared using a l0W-50 mineral lubricating oil base and, as additives, 3.4% of a hydrogenated butadiene-styrene copolymer as a viscosity index improver; 0.2% of a conventional pour point depressant (PAM-140); 60ppm of a conventional antifoaming agent; 1.0% ofa dispersant based upon a reaction product ofa polybutenyl succinic anhydride, tetramethylene pentamine and phthalic acid; 0.1% of a commercial thiadiazole based copper deactivator (Amoco 150); 1.0% ofa 61% oil solution of dodecenyl succinic anhydride; and 1.0% of methylene bis(dibutyldithiocarbamate).
  • a lubricating composition suitable for use as a hydraulic fluid is prepared using a 200 N mineral lubricating base oil, 1.0% of a corrosion inhibitor based upon an adduct (1:1 eq) of diisooctylphosphinodithioic acid and methyl acrylate, 0.05% of an oil solution (37% oil) of the partially esterified dodecenyl succinic acid described in Example 1, and 0.25% of methylene bis(dibutyldithiocarbamate
  • a lubricating composition suitable for use as a hydraulic fluid is prepared using a 350 N mineral lubricating base oil, 0.50% of tri(4-methyl-2-pentyl)phosphite as an extreme pressure agent, 0.05% of an oil solution (37% oil) of the reaction product obtained by the treatment of 1,000 parts of an oil solution (39% oil) of dodecenyl succinic acid with 60.5 parts of propylene oxide, and 0.25% of methylene
  • a lubricating composition is prepared using a synthetic lubricating base oil consisting essentially of the diethyl ether of propylene glycol having an average molecular weight of about 15,000, 0.05% of the oil solution of the partially esterified dodecenyl succinic acid described in Example 1, and 1% of methylene bis(dibutyldithiocarbamate).
  • the lubricating composition of the present invention may, of course, be prepared by a variety of methods known in the art.
  • One convenient method is to add the additive combination in the form of a concentrated solution or suspension to a sufficient amount of the base lubricant to form the subject lubricating composition.
  • This additive concentrate contains the separate ingredients of the combination in the proper ratio to each other to provide the proper ratio of anti-oxidant and rust-inhibitor in the final lubricating composition.
  • the Y concrete may also contain appropriate amounts of any additional additive which it is desired to incorporate in the final composition.
  • the concentrate will comprise from about 20 to about percent of the additive combination with the balance being a substantially inert normally liquid solvent or diluent, plus any additional additive used.
  • Suitable solvents and diluents include any of the above-discussed natural or synthetic oils, kerosene, xylene, benzene, mixtures of two or more of these and other solvents and diluents known in the art.
  • these substantially inert, normally liquid solvents and diluents used in the preparation of additive concentrates are referred to collectively as carriers.
  • the carriers are oil-soluble, at least to the extent of their concentration in the final lubricating compositions prepared from them.
  • a lubricant composition comprising a major pro-.
  • an additive combination comprising (A) one or more alkylene dithiocarbamates and (B) one or more rust inhibitors selected from the group consisting of aliphatic hydrocarbonsubstituted succinic acid, aliphatic hydrocarbonsuccinic acid anhydride, and the reaction product obtained by the esterification of the acid or the anhydride with from about 0.1 mole to about 1.0 mole per mole of the acid or the anhydride, of at least one alkylene oxide or alkylene glycol containing up to about 20 carbon atoms; wherein the alkylene dithiocarbamate corresponds to the formula:
  • R,R NC(S)S-X-S(S)CNR R in which R R R R and R are independently radicals selected from the group consisting of hydrogen and alkyl, or R, and R taken together with the nitrogen to which they are attached, are R,-,, or R, and R, taken together with the nitrogen to which they are attached, are R wherein R and R are independently 5- or 6- membered heterocyclic groups, and the combined total number of carbon atoms of R,, R R and R, is at least about 8, and X represents an alkylene radical having up to about 8 carbon atoms.
  • R and R are heterocyclic radicals selected from the group consisting of pyrrolidinyl and piperidino.
  • aliphatic hydrocarbon substituent of the aliphatic hydrocarbon-succinic acid or anhydride has from about 8 to about 30 aliphatic carbon atoms.
  • the lubricant composition of claim 5, wherein the anti-rust component of the additive combination is the reaction product of the succinic acid or its anhydride with an alkylene oxide or alkylene glycol having from 2 to 6 carbon atoms.
  • R and R are heterocyclic radicals selected from the group consisting of pyrrolidinyl and piperidino.
  • R,, R,, R, and R are, independently, alkyl radicals having from 1 to 8 carbon atoms.
  • R and R are heterocyclic radicals selected from the group consisting of pyrrolidinyl land piperidino.
  • R, R R and R are, independently, alkyl radicals having from 1 to 8 carbon atoms.
  • An additive concentrate comprising a substantially inert carrier and from about 20 to about percent of the additive combination of claim 1.
  • An additive concentrate comprising a substantially inert carrier and from about 20 to about 90 percent of the additive combination of claim 8.
  • An additive concentrate comprising a substantially inert carrier and from about 20 to about 90 percent of the additive combination of claim l5.
  • a steam turbine lubricant composition comprising a major proportion of lubricating oil and a minor proportion, sufficient to improve the anti-oxidant and rust-inhibiting properties of the composition, of an additive combination comprising (A) one or more alkylene dithiocarbamates and (B) one or more rust inhibitors selected from the group consisting of aliphatic hydrocarbon-substituted succinic acid, aliphatic hydrocarbonsuccinic acid anhydride, and the reaction product obtained by the esterification of the acid or anhydride with from about 0.1 mole to about 1.0 mole per mole of the acid or anhydride, of at least one alkylene oxide or alkylene glycol containing up to about 20 carbon atoms; wherein the alkylene dithiocarbamate corresponds to the formula:
  • R,, R R and R are independently radicals selected from the group consisting of hydrogen and alkyl, or R, and R taken together with the nitrogen to which they are attached. are R,-,, or R, and R, taken together with the nitrogen to which they are attached, are R,,,, wherein R and R, are independently 5- or 6- membered heterocyclic groups, and the combined total number of carbon atoms of R,, R R, and R, is at least about 8, and X represents an alkylene radical having up to about 8 carbon atoms.

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FR2405987A1 (fr) * 1977-10-13 1979-05-11 Lubrizol Corp Compositions d'additifs desemulsionnants pour lubrifiants et combustibles et compositions les contenant
US4210545A (en) * 1979-03-30 1980-07-01 Standard Oil Company (Indiana) Oxidation resistant lubricant composition
US4411881A (en) * 1982-07-12 1983-10-25 New England Nuclear Corporation Composition and method for stabilizing radiolabeled compounds using thiocarbonylated diethylenetriamines
JPS5911397A (ja) * 1982-06-09 1984-01-20 Idemitsu Kosan Co Ltd 疲労寿命改良潤滑剤
US4618461A (en) * 1983-07-25 1986-10-21 The Dow Chemical Company O,O'-, O,S'- or S,S'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamothioates) and S,S'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamodithioates) and method of preparation thereof
US4645538A (en) * 1984-12-24 1987-02-24 Ethyl Corporation Asphaltic compositions
US4859352A (en) * 1988-02-29 1989-08-22 Amoco Corporation Low temperature high performance grease
EP0369673A1 (en) * 1988-11-16 1990-05-23 Exxon Chemical Patents Inc. Oil additive compositions exhibiting reduced haze containing polymeric viscosity index improver
US5015368A (en) * 1990-06-15 1991-05-14 The Lubrizol Corporation Ore flotation process using carbamate compounds
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US5147572A (en) * 1990-06-15 1992-09-15 The Lubrizol Corporation Flotation composition using a mixture of collectors
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US5247087A (en) * 1992-05-13 1993-09-21 Baker Hughes Incorporated Epoxy modified water clarifiers
EP0588561A1 (en) * 1992-09-14 1994-03-23 Oronite Japan Limited Low phosphorous engine oil compositions and additive compositions
US5346635A (en) * 1993-06-03 1994-09-13 Material Innovation, Inc. Low and light ash oils
US5391310A (en) * 1993-11-23 1995-02-21 Cincinnati Milacron Inc. Sulfurized aqueous machining fluid composition
WO1995010584A1 (en) * 1993-10-12 1995-04-20 Behrooz Khorramian Low and light ash lubricating oils
US5464548A (en) * 1992-12-24 1995-11-07 The Lubrizol Corporation Lubricants, functional fluid and grease compositions containing sulfite or sulfate overbased metal salts and methods of using the same
NL1002233C2 (nl) * 1995-02-03 1996-08-05 Mol Magyar Olaj & Gazipari Rt Verbeterde werkwijze voor de bereiding van methyleen-bis(dibutyl- dithiocarbamaat) met een ASTM-kleur lager dan 2.
US5569405A (en) * 1992-09-14 1996-10-29 Chevron Chemical Company Low phosphorous engine oil compositions and additive compositions
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US5618778A (en) * 1984-06-29 1997-04-08 Ciba-Geigy Corporation Additives for lubricants
US5629272A (en) * 1991-08-09 1997-05-13 Oronite Japan Limited Low phosphorous engine oil compositions and additive compositions
US5641735A (en) * 1995-06-06 1997-06-24 Chevron Chemical Company Bis(thio)ethylene ashless wear inhibitors and lubricating oils
US5674820A (en) * 1995-09-19 1997-10-07 The Lubrizol Corporation Additive compositions for lubricants and functional fluids
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AU694807B2 (en) * 1994-11-15 1998-07-30 Lubrizol Corporation, The Lubricants and fluids containing thiocarbamates and phosphorus esters
US5807814A (en) * 1996-07-05 1998-09-15 Chevron Chemical Company Bis(thio)ethylene ashless wear inhibitors and lubricating oils and greases
US5858931A (en) * 1995-08-09 1999-01-12 Asahi Denka Kogyo K.K Lubricating composition
US5902776A (en) * 1995-09-19 1999-05-11 The Lubrizol Corporation Additive compositions for lubricants and functional fluids
US5962380A (en) * 1995-06-06 1999-10-05 Chevron Chemical Company Llc Fluorocarbon elastomer compatibility improving agent having wear inhibition effect
US5972852A (en) * 1995-06-05 1999-10-26 Exxon Chemical Patents, Inc. Ester-free synthetic lubricating oils comprising polybutenyl substituted succinic acid or anhydride and hydrocarbon polymer
US6046144A (en) * 1997-06-02 2000-04-04 R.T. Vanderbilt Co., Inc. Combination of phosphate based additives and sulfonate salts for hydraulic fluids and lubricating compositions
US6063740A (en) * 1997-10-21 2000-05-16 Nippon Oil Co., Ltd. Grease composition for rolling bearings
US6121211A (en) * 1998-07-17 2000-09-19 The Lubrizol Corporation Engine oil having dithiocarbamate and aldehyde/epoxide for improved seal performance, sludge and deposit performance
FR2792326A1 (fr) * 1999-04-19 2000-10-20 Renault Fluides fonctionnels non toxiques et biodegradables a base de copolymeres d'oxyde d'ethylene et d'oxyde de propylene pour vehicules automobiles
US6187723B1 (en) * 1993-09-13 2001-02-13 Exxon Research And Engineering Company Lubricant composition containing antiwear additive combination
US6326336B1 (en) 1998-10-16 2001-12-04 Ethyl Corporation Turbine oils with excellent high temperature oxidative stability
US20040121918A1 (en) * 2002-07-08 2004-06-24 Salvatore Rea Lubricating oil composition for marine engines
US20100113314A1 (en) * 2007-03-29 2010-05-06 Idemitsu Kosan Co., Ltd Gear oil composition
US20120074358A1 (en) * 2009-10-01 2012-03-29 Rhein Chemie Rheinau Gmbh Anticorrosion additives for manufacturing processes, a process for preparation thereof and use thereof
US9006482B2 (en) 2013-06-18 2015-04-14 China Petroleum & Chemical Corporation Process for preparing methylene bis-(dialkylamino-dithioformate) in one step
EP2010636B1 (en) 2006-04-13 2015-07-08 ExxonMobil Research and Engineering Company Low sap engine lubricant additive and composition containing non-corrosive sulfur compound and organic borates
CN105503676A (zh) * 2014-09-25 2016-04-20 中国石油化工股份有限公司 一种低色度亚甲基双（二烷基二硫代甲酰胺）的安全生产方法
CN110551047A (zh) * 2019-07-30 2019-12-10 上海裕诚化工有限公司 一种二烷基二硫代氨基甲酸酯的制备方法

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US7160845B2 (en) * 2004-03-31 2007-01-09 Crompton Corporation Dithiocarbamate derivatives useful as lubricant and fuel additives
JP5571290B2 (ja) * 2008-02-14 2014-08-13 出光興産株式会社 潤滑油組成物

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US4210545A (en) * 1979-03-30 1980-07-01 Standard Oil Company (Indiana) Oxidation resistant lubricant composition
JPS5911397A (ja) * 1982-06-09 1984-01-20 Idemitsu Kosan Co Ltd 疲労寿命改良潤滑剤
US4501678A (en) * 1982-06-09 1985-02-26 Idemitsu Kosan Company Limited Lubricants for improving fatigue life
JPH0331760B2 (US20080293856A1-20081127-C00150.png) * 1982-06-09 1991-05-08 Idemitsu Kosan Co
US4411881A (en) * 1982-07-12 1983-10-25 New England Nuclear Corporation Composition and method for stabilizing radiolabeled compounds using thiocarbonylated diethylenetriamines
US4618461A (en) * 1983-07-25 1986-10-21 The Dow Chemical Company O,O'-, O,S'- or S,S'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamothioates) and S,S'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamodithioates) and method of preparation thereof
US5618778A (en) * 1984-06-29 1997-04-08 Ciba-Geigy Corporation Additives for lubricants
US5892051A (en) * 1984-06-29 1999-04-06 Ciba Specialty Chemicals Corporation Additives for lubricants
US4645538A (en) * 1984-12-24 1987-02-24 Ethyl Corporation Asphaltic compositions
US4859352A (en) * 1988-02-29 1989-08-22 Amoco Corporation Low temperature high performance grease
US5180510A (en) * 1988-03-31 1993-01-19 Ethyl Petroleum Additives, Inc. Antioxidant additive and lubricating oil containing same
EP0369673A1 (en) * 1988-11-16 1990-05-23 Exxon Chemical Patents Inc. Oil additive compositions exhibiting reduced haze containing polymeric viscosity index improver
US5147572A (en) * 1990-06-15 1992-09-15 The Lubrizol Corporation Flotation composition using a mixture of collectors
US5094746A (en) * 1990-06-15 1992-03-10 The Lubrizol Corporation Flotation process using a mixture of collectors
AU634412B2 (en) * 1990-06-15 1993-02-18 Lubrizol Corporation, The Ore flotation process using carbamate compounds
WO1991019569A1 (en) * 1990-06-15 1991-12-26 The Lubrizol Corporation Ore flotation process using carbamate compounds
US5015368A (en) * 1990-06-15 1991-05-14 The Lubrizol Corporation Ore flotation process using carbamate compounds
US5629272A (en) * 1991-08-09 1997-05-13 Oronite Japan Limited Low phosphorous engine oil compositions and additive compositions
EP0528610B1 (en) * 1991-08-09 1998-04-01 Oronite Japan Limited Low phosphorous engine oil composition and additive compositions
US6531428B2 (en) 1991-08-09 2003-03-11 Chevron Oronite Company Llc Low phosphorous engine oil composition and additive compositions
US5247087A (en) * 1992-05-13 1993-09-21 Baker Hughes Incorporated Epoxy modified water clarifiers
US5569405A (en) * 1992-09-14 1996-10-29 Chevron Chemical Company Low phosphorous engine oil compositions and additive compositions
EP0588561A1 (en) * 1992-09-14 1994-03-23 Oronite Japan Limited Low phosphorous engine oil compositions and additive compositions
US5464548A (en) * 1992-12-24 1995-11-07 The Lubrizol Corporation Lubricants, functional fluid and grease compositions containing sulfite or sulfate overbased metal salts and methods of using the same
US5346635A (en) * 1993-06-03 1994-09-13 Material Innovation, Inc. Low and light ash oils
US5439605A (en) * 1993-06-03 1995-08-08 Khorramian; Behrooz A. Phosphorus and phosphours-free low and light ash lubricating oils
US6187723B1 (en) * 1993-09-13 2001-02-13 Exxon Research And Engineering Company Lubricant composition containing antiwear additive combination
WO1995010584A1 (en) * 1993-10-12 1995-04-20 Behrooz Khorramian Low and light ash lubricating oils
US5391310A (en) * 1993-11-23 1995-02-21 Cincinnati Milacron Inc. Sulfurized aqueous machining fluid composition
EP0712923B1 (en) * 1994-11-15 2007-08-29 The Lubrizol Corporation Lubricants and fluids containing thiocarbamates and phosphorus esters
US5843873A (en) * 1994-11-15 1998-12-01 The Lubrizol Corporation Lubricants and fluids containing thiocarbamates and phosphorus
AU694807B2 (en) * 1994-11-15 1998-07-30 Lubrizol Corporation, The Lubricants and fluids containing thiocarbamates and phosphorus esters
GR1002516B (el) * 1995-02-03 1997-01-22 Mol Magyar Olaj Es Gazipari Reszvenytarsasag Βελτιωμενη μεθοδος παρασκευης δις(διβουτυλ-διθειοκαρβαμικου) μεθυλενιου με χρωμα κατα astm κατω του 2.
NL1002233C2 (nl) * 1995-02-03 1996-08-05 Mol Magyar Olaj & Gazipari Rt Verbeterde werkwijze voor de bereiding van methyleen-bis(dibutyl- dithiocarbamaat) met een ASTM-kleur lager dan 2.
FR2730230A1 (fr) * 1995-02-03 1996-08-09 Mol Magyar Olaj & Gazipari Rt Procede ameliore de fabrication de methylene-bis (dibutyl-dithiocarbamate) ayant une coloration astm inferieure a 2
BE1009129A3 (fr) * 1995-02-03 1996-12-03 Mol Magyar Olaj & Gazipari Rt Procede ameliore de fabrication de methylene-bis (dibutyl-dithiocarbamate) ayant une coloration astm inferieure a 2.
ES2117555A1 (es) * 1995-02-03 1998-08-01 Mol Magyar Olaj & Gazipari Rt Procedimiento perfeccionado para la fabricacion de metileno-bis-(dibutil-ditio-carbamato) con color asim inferior a 2.
EP0725060A1 (en) * 1995-02-03 1996-08-07 Mol Magyar Olaj Es Gazipari Reszvenytarsasag Process for manufacturing 4,4'-methylene-bis-(dibutyl-dithiocarbamate)
US5972852A (en) * 1995-06-05 1999-10-26 Exxon Chemical Patents, Inc. Ester-free synthetic lubricating oils comprising polybutenyl substituted succinic acid or anhydride and hydrocarbon polymer
US5641735A (en) * 1995-06-06 1997-06-24 Chevron Chemical Company Bis(thio)ethylene ashless wear inhibitors and lubricating oils
US5962380A (en) * 1995-06-06 1999-10-05 Chevron Chemical Company Llc Fluorocarbon elastomer compatibility improving agent having wear inhibition effect
US5858931A (en) * 1995-08-09 1999-01-12 Asahi Denka Kogyo K.K Lubricating composition
US5902776A (en) * 1995-09-19 1999-05-11 The Lubrizol Corporation Additive compositions for lubricants and functional fluids
US5674820A (en) * 1995-09-19 1997-10-07 The Lubrizol Corporation Additive compositions for lubricants and functional fluids
EP0764715A1 (en) * 1995-09-19 1997-03-26 The Lubrizol Corporation Additive compositions for lubricants and functional fluids
US5693598A (en) * 1995-09-19 1997-12-02 The Lubrizol Corporation Low-viscosity lubricating oil and functional fluid compositions
US5807814A (en) * 1996-07-05 1998-09-15 Chevron Chemical Company Bis(thio)ethylene ashless wear inhibitors and lubricating oils and greases
US6046144A (en) * 1997-06-02 2000-04-04 R.T. Vanderbilt Co., Inc. Combination of phosphate based additives and sulfonate salts for hydraulic fluids and lubricating compositions
US6063740A (en) * 1997-10-21 2000-05-16 Nippon Oil Co., Ltd. Grease composition for rolling bearings
US6121211A (en) * 1998-07-17 2000-09-19 The Lubrizol Corporation Engine oil having dithiocarbamate and aldehyde/epoxide for improved seal performance, sludge and deposit performance
US6326336B1 (en) 1998-10-16 2001-12-04 Ethyl Corporation Turbine oils with excellent high temperature oxidative stability
FR2792326A1 (fr) * 1999-04-19 2000-10-20 Renault Fluides fonctionnels non toxiques et biodegradables a base de copolymeres d'oxyde d'ethylene et d'oxyde de propylene pour vehicules automobiles
EP1046699A1 (fr) * 1999-04-19 2000-10-25 Renault Fluides fonctionnels non toxiques et biodégradables pour véhicules automobiles
US20040121918A1 (en) * 2002-07-08 2004-06-24 Salvatore Rea Lubricating oil composition for marine engines
EP2010636B1 (en) 2006-04-13 2015-07-08 ExxonMobil Research and Engineering Company Low sap engine lubricant additive and composition containing non-corrosive sulfur compound and organic borates
US20100113314A1 (en) * 2007-03-29 2010-05-06 Idemitsu Kosan Co., Ltd Gear oil composition
US8609596B2 (en) 2007-03-29 2013-12-17 Idemitsu Kosan Co., Ltd. Gear oil composition
US20120074358A1 (en) * 2009-10-01 2012-03-29 Rhein Chemie Rheinau Gmbh Anticorrosion additives for manufacturing processes, a process for preparation thereof and use thereof
US9121103B2 (en) * 2009-10-01 2015-09-01 Rhein Chemie Rheinau Gmbh Anticorrosion additives for manufacturing processes, a process for preparation thereof and use thereof
US9006482B2 (en) 2013-06-18 2015-04-14 China Petroleum & Chemical Corporation Process for preparing methylene bis-(dialkylamino-dithioformate) in one step
CN105503676A (zh) * 2014-09-25 2016-04-20 中国石油化工股份有限公司 一种低色度亚甲基双（二烷基二硫代甲酰胺）的安全生产方法
CN110551047A (zh) * 2019-07-30 2019-12-10 上海裕诚化工有限公司 一种二烷基二硫代氨基甲酸酯的制备方法

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JPS50134005A (US20080293856A1-20081127-C00150.png) 1975-10-23
ZA747652B (en) 1976-07-28
JPS57164191A (en) 1982-10-08
FR2267366A1 (US20080293856A1-20081127-C00150.png) 1975-11-07
FR2267366B1 (US20080293856A1-20081127-C00150.png) 1982-02-26
CA1030945A (en) 1978-05-09
GB1483912A (en) 1977-08-24
ES432520A1 (es) 1977-03-01

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