JPH01503392A - Gear lubricant packages containing a synergistic combination of ingredients - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] name of invention Contains a synergistic combination of ingredients. Gear lubricant puff cage light plate onibaristop division The present invention provides a lubricant containing an additive package that improves the performance of the lubricant. related to the field of drugs. To be more specific.

This invention relates to an additive package and gear lubricant having a combination of the following ingredients: do. The ingredients are synergistic and interdependent in improving the many properties of gear lubricants. give effect. This additive package consists of (a) treated zinc dithiophosphate; (preferably treated with propylene oxide).

and (b) an overbased carboxylate, which is preferably boron ). The additive is also preferably an alkyl alkyl Contains minerals, sulfurized olefins, and polymeric defoamers.

Evening view of Shusato The gear lubricant package contains Included. Many different additive compounds add performance characteristics to two different types of lubricants. It is known to give sex. However, the resulting additive compound depending on the type of lubricant available and other additive compounds present in this lubricant. , can have different effects on performance characteristics.

Therefore, the formulator is designed to reduce the main effect of including the resulting compound. Just consider how the effect of this compound is affected by the presence of other compounds. Consider what you can change.

and all conditions under which the final product will be used must be considered.

U.S. Pat. No. 3,923.669 contains zinc dialkyldithiophosphate antiwear agents. I met. A wear-resistant hydraulic oil is disclosed.

In addition, this additive package contains two petroleum sulfonic acid neutral barium salts, and Huccinic acid based rust inhibitors are included.

U.S. Patent No. 3,480.548 provides the following lubricating oil and additive packages with major quantities: A lubricating composition comprising: This lubricant and additive package is in a coroin-like dispersion.

Oil-soluble positive alkaline earth metal hydrocarbon sulfonates and alkaline earth metals Included are polyborates, alkaline earth metal carbonates.

U.S. Pat. No. 3,929,650 discloses certain dispersions of alkali metal borates. ing. This dispersion consists of boric acid and alkaline earth metal carbonate overbased metals. It is prepared by contacting the sulfonate with a lipophilic liquid reaction medium. Ru. The resulting particulate dispersion can be incorporated into lubricants to improve performance properties. .

U.S. Patent No. 3,903.003 is intended for use in conjunction with internal combustion engines. A lubricating oil composition is disclosed. This lubricant contains an additive pack consisting of: This additive package includes carboxylated and hydrogenated cages: polyisoprene and certain amines, imines and hydroxyalkyl polyisoprenes. Formed with amines. Composed of amide-amine reaction products. This attachment Additives can be used in combination with many different types of lubricants, including gear lubricants. It is shown that

U.S. Pat. No. 4,563,302 discloses a method for adding lubricating oils to improve oil stability. Disclosed are disulfide olefins utilized in combination. Such sulfurized olefin A particular method of manufacturing fins is disclosed.

U.S. Pat. No. 4,481,122 discloses that a major amount of base oil, and (e.g., polyisobutylene). Disclose a lubricating composition ing. Certain compounds (e.g. organosilicone defoamers) may also be used in this lubricating oil. It is shown that it is included in

1st and 11th The additive pancage of the present invention includes (a) treated zinc dithiophosphate, and (b) ) Overbased carboxylate (which is preferably boronated) ) are included. This package consists of (C) alkylamines and (d) sulfurized Added to gear lubricants containing olefins or other additive ingredients: When used in combination with (a) and (b), the additive components include (C) and Input the characteristics in (d). moreover.

The main amount of oil of lubricating viscosity, and the addition pancage (which consists of four essential components) consisting of a small amount (consisting of) A gear lubricant is disclosed. child The four essential ingredients include (a) treated zinc dithiophosphate, (b) oats <- based carboxylate (which is preferably boronated), (C ) alkylamines, and (d) sulfurized olefins. This additive pack The cage and gear lubricant preferably includes (e) a polymeric antifoam agent. component According to (a)-(d).

Interdependent and synergistic improvements in many performance properties of gear lubricants are achieved.

The object of the present invention is to provide an additive package for a gear lubricant and an additive package such as: An object of the present invention is to provide a gear lubricating oil containing This additive package is economical It can be manufactured by

and may have improved performance characteristics.

Another object of the invention is to provide a primary quantity of oil of lubricating viscosity and the following additive packages: An object of the present invention is to provide a gear lubricant that contains a small amount of lubricant. This added puff cage , treated zinc dithiophosphates, overbased carboxylates, alkyl Composed of amines and sulfurized olefins.

Another object of the invention is (a) treated zinc dithiophosphate.

and (b) a gear lubricant addition consisting of an overbased carboxylate. The goal is to provide a package.

In addition, other purposes include (C) alkylamines, (d) sulfurized olefins, and (e) Such as further composed of a polymeric antifoam agent.

The goal is to provide a package.

An advantage of the present invention is that this additive package can be produced economically and efficiently. There is a particular thing.

Another advantage of the present invention is that this additive package has many functional properties of the gear lubricant. The aim is to improve the

Another advantage of the present invention is the addition of this buff cage ingredient.

produce interdependent and synergistic results in improving the performance properties of gear lubricants. It's about knowing.

The feature of the present invention is that this additive pancage has a corrosion resistance of 1 ( This is advantageous for gear lubricants used in contact with copper-containing components. The goal is to significantly improve the

Another feature of the invention is that the additive pancage increases the thermal stability of the gear lubricant. It is.

Still another feature of the invention is that the additive package is compatible with conventional gear lubricants. Corrosion resistant properties while reducing odor.

The objective is to improve chatter resistance.

Yet another feature of the present invention is limited sliding axis performance.

This is a significant improvement.

These and other objects, advantages and features of the invention will be described more fully below. will be apparent to those skilled in the art upon reading the details of the compositions and uses as indicated. right. References constitute the accompanying general formulas and structural formulas forming part thereof. do. Here, the symbols completely indicate components, molecular parts, etc.

A detailed explanation of the gear lubricant additive pancage of the present invention, And before describing gear lubricants, this invention is not limited to particular ingredients or amounts.

It should be understood that such ingredients and amounts may, of course, vary. . The terminology used herein is for the purpose of describing specific implementations only. It should be understood that it is not intended to be limiting. present invention This is because the scope of is limited only by the appended claims.

As used in this specification and the appended claims.

The singular form “Ia”, “an” and “the” are used when the two contexts clearly indicate Including multiple referents, except where applicable. Therefore 2 For example, the quotation “a tre ated zinc dithiophosphate”.

including mixtures of such treated zinc dithiophosphates.

The quote “1lan overbased carboxylate” is like this including mixtures of carboxylates, and the reference “an alkyla I Iline” is a mixture of alkyl amines (which is based on the statistical analysis of such components). Each component can be varied by small amounts over a certain range to obtain a mixture that is ). beyond a certain range.

The inclusion of such statistical mixtures of components that can be varied by small amounts is The following points are commonly practiced within the art of lubricating additives: That is, Lubricating additives are produced from crude reactive components that are themselves statistical mixtures in an economical and efficient manner. The point is that it must be generated in a realistic manner.

The additive package of this invention comprises 2 (a) treated zinc dithiophosphate; and (b) ) must contain an overbased carboxylate. (a) and (b) The pan cage, which is composed of It is useful as an additive package due to its ability to This (a) and (b) The package contains (C) an alkylamine and (d) a sulfurized olefin. or other additive ingredients (this may be an alternative to (C) or (d)). It is added to gear oil containing

The fully formulated gear lubricants of this invention are always composed of four components. this The four ingredients include (a) treated zinc dithiophosphate; (b) overbase; carboxylate (which is preferably boronated); (c) alkaline carboxylate; and (d) sulfurized olefins. Performance of this gear lubricant Any ingredients that may further add to the properties.

(e) A polymer antifoaming agent.

By including this additive package in the gear lubricant.

Many functional properties of gear lubricants are improved. More specifically, this additive package The composition of the diaryentine provides interdependent and synergistic improvements in a number of properties, including: - Avoid corrosion of copper strip test; Increase thermal stability: Rust and odor reducing the amount of air; and improving certain slip performance and anti-chattering performance. and each specific component of this additive pancage is Used herein to describe and disclose a number of representative examples of Described in detail.

Cleaned dithiolinker Different types of zinc dithiophosphate compounds can be used in various types of lubricants. It is a useful additive as an antiwear agent.

Zinc dithiophosphate continues to provide one of the most economical raw materials for anti-wear protection. continue. Three general types of dithio, which should be selected depending on the specific application There is zinc phosphate.

This zinc salt is primary, depending on the alcohol being produced.

There are two classifications: either secondary or aryl. However, primary zinc salt and secondary zinc salts are usually designated as alkyl. Regarding zinc dithiophosphate In the structure (shown below), T0 is not derived from a primary alcohol. et al. 2 This zinc salt is designated as primary; similarly, if it is a secondary alcohol If derived from a phenol, it is designated as secondary, and if derived from a phenol or If derived from an alkylphenol, it is designated as aryl.

Compound from which R-0 is derived Classification of zinc dithiophosphate R-C)1. -OH For example, CH3-(CHz)n-CHz-DH primary e.g.

Each of these zinc salts typically has a different combination of performance properties as summarized below. d indicating Dithioline-A type Performance characteristics 1st class 2nd class Aryl Wear protection Average Best Worst Antioxidant Average Best Worst Thermal stability Average Worst Best Demulsification degree Best Average Worst Price Lowest Average Highest Note: Within a certain class, there are variations in the evaluation of different compounds.

Furthermore, certain performance characteristics can be evaluated differently for different raw materials.

Zinc salts are selected for specific applications based on their relative performance levels. Ru. For example, aryl zinc salts are often used due to their excellent thermal stability. Used exclusively for diesel engines. First grade zinc salt is used in engine oil It has found many uses in both oil and hydraulic oils. Secondary zinc salt is , is mostly used in hydraulic oils, transmission oils and gear oils. 1st class sub Lead salts and secondary zinc salts are preferred for these applications due to their relatively good wear resistance. 2 are selected. Where hydraulic oils are concerned, first class zinc salts are usually more preferable. These primary zinc salts are the lowest priced but have the best overall This is because it provides performance.

Zinc dithiophosphate may be present in the gear lubrication additives and oils of the present invention. death However, in the present invention, zinc dithiophosphate can be reacted with the following treatment reagents. and zinc dithiophosphate (preferably secondary zinc dithiophosphate) is used as an intermediate. This treatment reagent is used as an alkylene containing 2 to 5 carbon atoms. ethylene diamine and conjugates thereof. this invention The treated dithioli In combination with zinc phosphate, untreated zinc dithiophosphate may be included. most preferred Alternatively, the present invention provides zinc secondary dithiophosphate treated with propylene oxide. includes.

This treated zinc dithiophosphate is in gear oil.

Based on the weight of the oil, about 0.1% to 5%, more preferably about 2% by weight. In an amount ranging from 0% to 4.0% by weight, and most preferably about 3.0% by weight. , can exist. As with other ingredients, the amount of this ingredient is determined to be optimal under certain circumstances. It can be adjusted by one skilled in the art to obtain results. This ingredient is a fully formulated present in sufficient amounts to act as an EP agent/anti-wear agent in this system. do. Treatment with compounds such as propylene oxide may be used in to reduce the corrosive potential of this component.

(All white below) Overbased Carboxylate Overbased Carboxylate of the Invention The rate component (b) is.

It can be in borated or non-borated form. However, this ingredient It is noted that borated versions thereof are generally preferred. The owner of the present invention The borated versions of bar-based carboxylate component (b) are most commonly: a boron reactant (preferably boric acid) and an overbased carboxylate. It is prepared by reacting.

The term "overbased compound" is generally used to refer to the following metal salts: It will be done. Here, this metal is present in stoichiometrically greater amounts than the organic acid radicals. Ru. One commonly used method for preparing overbased compounds includes At temperatures in excess of metal oxides, hydroxides, carbonates, monobicarbonates, or sulfides). , and filtering the resulting mass. To incorporate excess amounts of metals To.

The use of "promoters" in the neutralization step has generally been found to be useful. ing. A particularly effective method for preparing basic salts involves adding an acid and an excess of base. an alkaline earth metal neutralizer and at least one alcohol promoter. and adding CO2 to this mixture at an elevated temperature between 10°C and 200°C. This includes carbonating the mixture by passing it through.

In the context of the present invention, this overbased compound is used in a stoichiometric excess of metal. By reacting Japanese additives with carboxylic acid.

to form a carboxylate (which includes a stoichiometric excess of the metal). There are overbased carboxylates prepared by. Therefore 9 For use in the present invention, the anionic portion of this overbased component is ionized. carboxylic acid or carboxylate. of this overbased component. The cationic moiety is typically an ionized alkali metal or alkaline earth It is metal. Commonly used alkali metals are lithium, potassium and sodium sodium is preferred. Typically used alkaline earth metal components are magnesium, calcium and barium; More preferred is sium.

From experience, a typical calcium carboxylate is Ca (RCOO)!・ It can be represented by 1 by XCa(OH)z.YCaCO3. Here, R is defined below. is hydrocarbyl as defined and X and Y in combination are 1 larger and may vary depending on the degree of overbasing desired. Cal Used in preparing boxylate. For some typical carboxylic acids.

Contains tall oil fatty acids, oleic acid, linoleic acid, linoleic acid, and valmitic acid. Included. The use of overbased calcium carboxylates of these acids More preferred.

After this overbased carboxylate component is formed, this component is It can be borated by reacting with an elementary reactant (preferably boric acid).

This boric acid can be added to one reaction medium in desired amounts to form different types of borates. Filled. Different amounts of HJO+ can be loaded into this system.

Depending on the desired end result, the desired amount of boron incorporation can be achieved in both borated and non-borated The overbased carboxylate component (b) of the urinated version is fully formulated. About 0.1% to 3%, preferably about 0.2% to 3%, based on the weight of the gear oil present in the gear oil in an amount in the range of about 1.5%, most preferably about 0.5%. It is possible.

The alkylamine component (c) of the invention may be a mono-, di- or polyamine. Ru. Furthermore, it is a primary amine, a primary amine.

It can be a secondary amine or a tertiary amine. While doing so.

In the context of the present invention, the amine is a diamine represented by the following general formula (I): The compound is more preferable: RN) I (CL) 3NH2 Here, R is hydrocarbyl. However, R.

In formula (I), and elsewhere in this disclosure, hydrocarbyl refers to 'hydrocarbon base. As used herein, the terms “hydrocarbon-based”, “ "Hydrocarbon-based substituents" and their analogs are defined within the context of this invention as Indicates a substituent having a carbon atom directly bonded to the remainder, and mainly refers to a hydrocarbon Indicates a substituent that has the following properties.

Examples of hydrocarbyl substituents useful in connection with the present invention include:

Includes: (1) Hydrocarbon substituents: i.e., aliphatic substituents (e.g.

alkyl or alkenyl), alicyclic substituents (e.g. cycloalkyl, cyclo alkenyl), aromatic substituted, aliphatic substituted and alicyclic substituted aromatic nuclei, and the like Similar as well as cyclic groups; where this ring is completed by other parts of one molecule. (i.e. 9 For example, any two indicated substituents - together, (can form alicyclic groups).

(2) Substituted hydrocarbon substituents; ie, groups containing non-hydrocarbon substituents.

In the context of the present invention, this non-hydrocarbon substituent primarily changes the hydrocarbon substituent. do not have. Those skilled in the art are aware of such substituents (e.g. halo, especially chloro). (fluoro and fluoro), alkoxy, mercapto, alkylmercapto, nitro, nitroso, sulfoxy, etc.).

(3) heterosubstituents; i.e., in the context of this invention, predominantly hydrocarbon a substituent containing atoms other than carbon in the chain or ring; The moiety is made up of carbon atoms. Suitable heteroatoms will be apparent to those skilled in the art. Examples include sulfur, oxygen, and nitrogen. For example, pyridyl, furanyl, Substituents such as thiophenyl, imidazolyl etc. are suitable for such heterosubstituents. This is an example.

Generally no more than about 3 groups or heteroatoms, preferably no more than 1 group or heteroatoms, each 10 carbon atoms in this hydrocarbon-based substituent. On the other hand, it exists.

Typically, for this hydrocarbon-based substituent, groups such as this or heteroatoms are There is no such thing, so it is purely hydrocarbon.

The alkylamine component (e) as a whole is about 0.0% based on the weight of the gear oil. 05% to about 1.0% by weight, preferably 0.1% to 0.4% by weight, most Preferably, it may be present in an amount ranging from about 0.2% by weight.

Watarudo and Suel Sulfurized olefins are well-known additives in lubricating oils, cutting oils, and the like. Kim US Pat. No. 2,249,312 to Ball, the contents of which are shown here. ) describes such a product. Eby U.S. Patent No. 2,708.19 No. 9, the contents of which are shown here, describes a similar product. child In the product of The following intermediate is obtained: This intermediate is an alkali metal polyester. Subjected to reaction with sulfide or alkaline earth metal polysulfide. Myer No. 3,471,404 to s., the contents of which are incorporated herein. describes the following products: In this product - sulfur chloride is The following intermediate is obtained. This intermediate contains 1 gram of sulfur. sulfur and alkali at a critical ratio of 1.8-2.2 gmol of metal sulfide per mol. Subjected to reaction with potassium metal sulfide. This substance is 9 then alkali metal hydroxide reflux with an aqueous solution of the compound for 1-24 hours. U.S. Patent No. 4,204.969 (This content is shown here) Now.

Effective sulfurized olefins are produced by -chloride ion in the presence of a lower alkanol promoter. It is produced by reacting curing with an olefin to obtain the following adduct.

This adduct reacts with sodium sulfide and sulfur in an aqueous alkanol solution. Served.

Sulfurized olefins with improved solubility (particularly α-olefin oligomer hydrants) Lubricating oil) is produced by reacting monoolefin with 5zC1z or SCI. By obtaining the lower appendage.

Manufactured. This adduct reacts with sodium sulfide in an aqueous alcoholic reaction medium. sulfur, alkyl mercaptans, and, optionally, sodium hydrogen sulfide. and subjected to reaction.

Such a process is disclosed in U.S. Pat. No. 4,563,302, the contents of which are also Ta. Shown here.

Methods for producing sulfurized olefins with improved solubility in lubricating oils include: Included are: a) selected from SC1z, 5t-CI□ and mixtures thereof; halogenated sulfur and aliphatic monoolefin containing 3-6 carbon atoms. b) in an aqueous alcoholic medium; At a temperature of 50″C to reflux temperature, the adduct, sulfur, NazS, 1 an alkyl mercaptan containing 42 carbon atoms, and optionally N C) forming the sulfurized olefin by reacting with a5H; Recovering the sulfurized olefin from the aqueous alcohol medium. (U.S. Patent No. 4.563.302).

Useful products are with either SCI□ or 5zC12.

can get.

Useful olefins are aliphatic monoolefins containing from 3 to about 6 carbon atoms. is shown as It is a monoethylenically unsaturated aliphatic hydrocarbon. These include 1 -butene, 2-butene.

Isobutyne, 1-pentene, 2-pentene, 2-methyl-1-butene.

Pentene, 2-ethyl-2-butene, and their analogs (including mixtures thereof) ) are included.

Preferably, the olefin is a mono-branched olefin (e.g. isobutyne, 2-branched olefin). -Methyl-1-butene, 2-methyl-2-butene, 2-methyl-2-pentene, etc. ). More preferably.

This ethylenic double bond is adjacent to a tertiary carbon atom.

For example, isobutylene is the most preferred olefin.

The sulfurized olefin component (d) as a whole is about 0% based on the weight of the gear oil. ．． 5% by weight to about 8.0% by weight, preferably.

3.0% to 4.0% by weight, most preferably about 3.0% by weight. With an amount in the range of OM view%, may be present in this gear oil.

Satooka body shofugo Acrylate copolymer antifoam agents have been found to be useful. Montsan It is commercially available from Dosha. The specific antifoaming agent is Deformer PC-1244. It is shown. The specific copolymer deformer compound has a 9 weight ratio of 2.5:1 It is a copolymer of 2-ethylhexyl acrylate/ethyl acrylate. child The copolymers are generally prepared with active chemical in an amount of 40% by weight in toluene diluent. exist. This copolymer was prepared by combining a monomer mixture in a toluene solvent with an initiator. It is manufactured by adding a certain proportion to the “heel”. This reactant is.

Mixed together in 9 polymerization vessels at about 110"C. The resulting product has a temperature of about 40"C. It is a polymer having a molecular weight in the range of 000 to 90,000 (Mw). here, Mn is in the range of 16.000-25.000. The viscosity at 40°C is It is approximately 15 eSt.

Many different types of defoamers may be found useful in connection with the present invention. Ru. - Jn 1 polymeric antifoam, based on the weight of the fully formulated gear oil. About 0.01% to 1.0% by weight, preferably 0.03% to 0.1% by weight %2, most preferably in an amount of about 0.075% by weight.

The following examples show how to produce the additive package and gear oil of the present invention. It is provided to provide this disclosure and description to those skilled in the art. This example is 2 inventions It is not intended to limit the scope of what a person considers to be his invention. used No effort has been made to ensure accuracy with respect to numerical values (e.g., weight ratios, etc.). However, some experimental errors and deviations should be taken into account. other without instructions.

parts are parts by weight, temperature is in degrees Celsius, and pressure is at or near atmospheric. Ru.

2 servings↓ Zinc dithiophosphate treated with 3% propylene oxide.

3% sulfurized olefin, 0.2% oleylamine + 0.5% boronated overbase aliphatic calcium carboxylate, and 0.075% commercially available polymer Added by formulating a foaming agent (which contains 40% active chemical ingredients) Prepare the concentrate. This ingredient was added to diluted oil to obtain a 7.0% concentrate by weight. I can do it.

husband support 0.5% boronated overbased fat to produce a 7.5% concentrate by weight Calcium carboxylate I/- to 1.0 wt.% overbased aliphatic carbonate. Except that I replaced it with lucium carboxylate (not boronated). The method of Example 1 is followed.

1st side- Mineral oil or mineral oil binder (e.g. 75% 60ON + 25% by weight 150B) 7.0% by weight of the concentrate described in Example 1, and 1.0% by weight of a polymeric pour point depressant. A gear oil can be prepared.

Scattered earth Adding the following ingredients to mineral oil of lubricating viscosity (e.g. Brightstock): A fully formulated gear oil can be prepared by: About 0.1% to 5% of processed zinc dithiophosphate, about 0.1% to about 3.0% bar-based carboxylate (which is preferably boronated), about 0 ．． 05% to about 1.0% alkylamine, about 0.5% to about 8.0% sulfurized olefin from about 0.01% to about 1.0% of a polymeric antifoam agent.

1 serving 5 l Completely formulated by adding the following ingredients to Brightstock Mineral Oil: Prepare gear oil: Zinc dithiophosphate treated with propylene oxide 3 parts by weight of boronated overbased magnesium carboxylate ．． 5 parts by weight, 0.2 parts by weight of alkylamine, and 3 parts by weight of sulfurized olefin. . The resulting fully formulated gear oil.

It should contain 6.7 parts by weight of additional ingredients. The remaining 93.3 parts by weight is Dostok mineral oil.

Shinhan Kandan For the fully formulated gear lubricant of Example 5, about 0.075 parts by weight of polymer Add foaming agent.

Tips and Tricks About 0.05 parts by weight to 5.0 parts by weight of zinc dithiophosphate treated with propylene oxide parts by weight, and the overbased carboxylate (which is preferably By blending together about 0.1 parts by weight to about 3.0 parts by weight of Prepare a gear lubricant addition package. This added ingredient acts as a diluent oil. It can be added to a small amount of mineral oil. This additive is used to formulate oils. Useful as an additive. This additive is suitable for alkylamines and sulfurized olefins. and/or other components (this includes alkylamines and sulfurized olefins). properties of the conjugate, providing interactions).

The present invention can be used by itself or in combination with other known additives in concentrates. and can be sold. For this additive.

Dispersants, detergents, oxidation inhibitors, anti-wear agents, extreme pressure agents, emulsifiers, demulsifiers, friction modifiers , rust inhibitor, corrosion inhibitor, viscosity improver.

dyes, and solvents to improve handling (this includes alkyl hydrocarbons) and/or alcoholic hydrocarbons); Not limited. These additives may be present in two different amounts depending on the use of the final product. It is possible.

The concentrate may contain from 0.01% to 90% by weight of additive packages.

This additive package provides special properties for gear oils in the final product, mixture or concentrate. an amount effective to improve sexual performance (up to the lesser amount, i.e. 50% by weight) amount).

It can exist. However, this additive package is preferred.

Fully formulated gear oil in the form of mineral oil with lubricating viscosity in gear oil from about 1% to about 10% by weight, preferably from about 2% to about 2% by weight, based on the weight of It is present in an amount of about 8% by weight, most preferably in an amount of about 6.775% by weight. here The individual components are present in the following amounts = (a) about 3.0%, (b) about 05% , (c) about 0.2%, (d) about 3.0%, and (e) about 0.075%.

In the gear oil, this additive package and the amounts of the individual components are optimized for optimum properties. may be modified by those skilled in the art to obtain the desired performance.

For example, small amounts (1-3%) of additives are commonly used with industrial gear oils. I can stay.

The present invention relates to what is considered as the most practical and more preferred embodiment: Shown and described here. However, within the scope of the present invention, there Departures may be made, and modifications will be obvious upon reading this disclosure.

It will be appreciated that those skilled in the art will recall.

international search report -1, -1---+ PCT/US 881014101smNIl’6”II Aa@l, jlInAM, PCT/US 88101410 International Search Report U58ε01410

Claims (20)

[Claims] 1. Gear lubrication additive containing: a) Treated zinc dithiophosphate; where the zinc dithiophosphate has 2 to 5 selected from the group consisting of alkylene oxide, ethylenediamine having carbon atoms of treated with a compound that is b) Overbased carboxylates. 2. The gear lubricating additive according to claim 1, further comprising c) an alkyl Contains amines. 3. The gear lubricating additive according to claim 1, further comprising d) sulfurized olefin. Contains fins. 4. The gear lubricating additive according to claim 1, further comprising e) a polymer quencher. Contains foaming agent. 5. The gear lubricating additive according to claim 2, further comprising d) sulfurized olefin. Contains fins. 6. The gear lubricating additive according to claim 5, further comprising e) a polymer quencher. Contains foaming agent. 7. A gear lubricating additive according to claim 1, wherein the dithiol is zinc oxide is treated with propylene oxide, and (b) is treated with calcium carboxylate. It is a xylate. 8. A gear lubricating additive according to claim 7, wherein the alkyl The amine is represented by the following general formula (I): ▲Contains mathematical formulas, chemical formulas, tables, etc.▼ Here, R is hydrocarbyl. 9. The gear lubricating additive according to claim 8, wherein R is 10 An alkyl moiety having ~20 carbon atoms. 10. A gear containing a major amount of oil of lubricating viscosity and minor amounts of the following components: A lubricant: a) treated zinc dithiophosphate, where the zinc dithiophosphate is a group consisting of alkylene oxides and ethylenediamines having carbon atoms of treated with a compound selected from; b) an overbased carboxylate; c) an alkylamine; and d) Sulfurized olefin. 11. The gear lubricant according to claim 10, further comprising e) a polymer quencher. Contains foaming agent. 12. The gear lubricant according to claim 10, wherein the Based carboxylates are boronated calcium carboxylates. Ru. 13. The gear lubricant according to claim 10, wherein the alkyl Amines are represented by the following general formula (I): ▲There are mathematical formulas, chemical formulas, tables, etc.▼ Here, R is hydrocarbyl. 14. The gear lubricant according to claim 13, where R is 10 An alkyl moiety having ~20 carbon atoms. 15. The gear lubricant according to claim 10, wherein the dithiol is Zinc oxide is treated with propylene oxide. 16. At least 90% by weight of oil of lubricating viscosity and additives containing: Gear lubricant containing from about 0.1% to about 10% by weight of the package: a) zinc dithiophosphate treated with propylene oxide; b) boronated oxide -barbased carboxylate; c) Alkylamine of the following formula (I): ▲number There are formulas, chemical formulas, tables, etc.▼ where R is an alkyl moiety having 10 to 20 carbon atoms; d) sulfurized olefin; and e) Polymeric defoamers. 17. The gear lubricant according to claim 16, wherein (b) is a cartilage lubricant. sium carboxylate, and the additive package is from about 4% to about 8% by weight. Present in an amount of % by weight. 18. The gear lubricant according to claim 16, wherein (b) is a nut. carboxylate, and the additive package contains about 1-4% by weight of Exist in quantity. 19. The gear lubricant according to claim 1, wherein the dithiophosphorus Zinc acid is treated with ethylenediamine. 20. The gear lubricant according to claim 10, wherein the dithiol is Zinc acid is treated with ethylenediamine.