# US 7,407,917 B2 · Lubricating oil composition for automatic transmissions

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- Number: US 7,407,917 B2
- Document ID: US7407917B2
- Status: Granted
- Kind: B2
- Application number: 10/989,451
- Filed: 2004-11-16
- Published: 2005-06-09
- Granted: 2008-08-05
- Earliest claimed: 2003-11-17
- Assignees: Chevron Oronite Company LLC
- Inventors: Michio Shiga; Tomotusgu Shiroi
- Web page: https://patentgrep.com/patent/US7407917B2

## CPC

- C07D 273/00: Heterocyclic compounds containing rings having nitrogen and oxygen atoms as the only ring hetero atoms, not provided for by groups C07D261/00 - C07D271/00
- C10M 159/12: Reaction products
- C10M 163/00: Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
- C10M 177/00: Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
- C10M 2207/026: with tertiary alkyl groups
- C10M 2207/126: monocarboxylic
- C10M 2209/084: Acrylate; Methacrylate
- C10M 2215/064: Di- and triaryl amines
- C10M 2215/08: Amides [having hydrocarbon substituents containing less than thirty carbon atoms]
- C10M 2215/102: Ureas; Semicarbazides; Allophanates
- C10M 2215/22: Heterocyclic nitrogen compounds
- C10M 2215/223: Five-membered rings containing nitrogen and carbon only
- C10M 2215/28: Amides; Imides
- C10M 2219/089: Overbased salts
- C10M 2223/049: Phosphite
- C10M 2229/02: Unspecified siloxanes; Silicones
- C10N 2010/04: Groups 2 or 12
- C10N 2030/06: Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
- C10N 2040/042: {for automatic transmissions}
- C10N 2060/14: by boron or a compound containing boron
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33)
- C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

## Abstract

An additive compound comprising a non-borated and/or borated reaction product, in which the reaction product is obtained by reacting a linear or branched, saturated or unsaturated monovalent aliphatic acid having 8 to 22 carbon atoms, urea, and polyalkylenepolyamine, when employed in a lubricating oil composition is favorably employable as an automatic transmission fluid of internal combustion engines.

## Claims

### Claim 1

An additive compound comprising the reaction product of a linear or branched, saturated or unsaturated monovalent aliphatic acid having 8 to 22 carbon atoms, urea, and polyalkylenepolyamine, wherein said polyalkylenepolyamine contains 2 to 30 carbon atoms and 2 to 15 nitrogen atoms, wherein at least two of said nitrogen atoms are in the form of primary amines, and wherein the reaction product is non-borated, borated or a mixture thereof.

### Claim 2 (depends on 1)

The additive compound of claim 1, wherein the reaction product is borated.

### Claim 3 (depends on 1)

The additive compound of claim 1, wherein the reaction product is produced by reacting one mole of a linear or branched, saturated or unsaturated monovalent aliphatic acid having 8 to 22 carbon atoms, 0.01 to 2 moles of urea, and 0.1 to 1 mole of polyalkylenepolyamine.

### Claim 4 (depends on 1)

The additive compound of claim 1, wherein the polyalkylenepolyamine is selected from the group consisting of ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, and hexaethyleneheptamine.

### Claim 5 (depends on 4)

The additive compound of claim 4, wherein the polyalkylenepolyamine is hexaethyleneheptamine.

### Claim 6 (depends on 1)

The additive compound of claim 1, wherein the aliphatic acid is isostearic acid.

### Claim 7

A lubricating oil composition comprising a major amount of base oil of lubricating viscosity and a minor amount of the reaction product of a linear or branched, saturated or unsaturated monovalent aliphatic acid having 8 to 22 carbon atoms, urea, and polyalkylenepolyamine, wherein said polyalkylenepolyamine contains 2 to 30 carbon atoms and 2 to 15 nitrogen atoms, wherein at least two of said nitrogen atoms are in the form of primary amines and wherein the reaction product is non-borated, borated or a mixture thereof.

### Claim 8 (depends on 7)

The lubricating oil composition of claim 7, wherein the reaction product is borated.

### Claim 9 (depends on 7)

The lubricating oil composition of claim 7, wherein the reaction product is produced by reacting one mole of a linear or branched, saturated or unsaturated monovalent aliphatic acid having 8 to 22 carbon atoms, 0.01 to 2 moles of urea, and 0.1 to 1 mole of polyalkylenepolyamine.

### Claim 10 (depends on 7)

The lubricating oil composition of claim 7, wherein the polyalkylenepolyamine is selected from the group consisting of ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, and hexaethyleneheptamine.

### Claim 11 (depends on 10)

The lubricating oil composition of claim 10, wherein the polyalkylenepolyamine is hexaethyleneheptamine.

### Claim 12 (depends on 7)

The lubricating oil composition of claim 7, wherein the aliphatic acid is isostearic acid.

### Claim 13 (depends on 7)

The lubricating oil composition of claim 7, which further contains 0.01 to 2 wt. % of diphenyl hydrogen phosphite.

### Claim 14 (depends on 7)

The lubricating oil composition of claim 7, which further contains a metal-containing detergent, an ashless dispersant, and an oxidation inhibitor.

### Claim 15 (depends on 7)

An automatic transmission apparatus containing the lubricating oil composition of claim 7.

### Claim 16 (depends on 7)

A method for reducing shudder in an automatic transmission of an internal combustion engine, said method comprising adding the lubricating oil composition of claim 7 to the automatic transmission and operating the engine.