Extended life functional fluid

Claim 2

A lubricating oil composition comprising: a. a major amount of an oil of lubricating viscosity, and B. an effective amount of each of the following:

Claim 3

an alkenyl succinimide, 2. a Group II metal salt of a dihydrocarbyl dithiophosphoric acid, 3. a friction modifier selected from the group consisting of (a) fatty acid esters of polyhydric alcohols, (b) oil-soluble oxyalkylated derivatives of fatty acid esters of dihydric alcohols, (c) oil-soluble oxyalkylated derivatives of fatty acid esters of polyhydricalcohols, (d) fatty acid amides of low molecular weight amino acids, (e) N-fatty alkyl-N,N-diethanol amines, (f) N-fatty alkyl-N,N-di-(ethoxyethanol) amines, (g) N-fatty alkyl-N,N-di-poly(ethoxy)ethanol amines, and (h) mixtures thereof, and 4. a basic sulfurized alkaline earth metal alkyl phenate.

Claim 4

an alkenyl succinimide, 2. a Group II metal salt of a dihydrocarbyl dithiophosphoric acid, 3. a friction modifier selected from the group consisting of (a) fatty acid esters of polyhydric alcohols, (b) oil-soluble oxyalkylated derivatives of fatty acid esters of dihydric alcohols, (c) oil-soluble oxyalkylated derivatives of fatty acid esters of polyhydricalcohols, (d) fatty acid amides of low molecular weight amino acids, (e) N-fatty alkyl-N,N-diethanol amines, (f) N-fatty alkyl-N,N-di-(ethoxyethanol) amines, (g) N-fatty alkyl-N,N-di-poly(ethoxy)ethanol amines, and (h) mixtures thereof, and 4. a basic sulfurized alkaline earth metal alkyl phenate.

Claim 5

A lubricating oil composition of claim 1 wherein 1. said alkenyl succinimide is a polyisobutenyl succinimide of a polyalkylene polyamine, 2. said hydrocarbyl groups of said dithiophosphoric acid contain from 4 to 12 carbon atoms, 3. the fatty alkyl group of said fatty acids contain from 12-20 carbon atoms and said fatty alkyl group of said tertiary amine contains from 12-18 carbon atoms, and

Claim 6

said Group II metal of said basic sulfurized alkaline earth metal alkyl phenate is magnesium, calcium, or barium.

Claim 7

said Group II metal of said basic sulfurized alkaline earth metal alkyl phenate is magnesium, calcium, or barium.

Claim 8

A lubricating oil composition of claim 1 wherein: 1. said alkenyl succinimide has the following formula: ##EQU6## wherein: a. R 1 represents an alkyl group, b. the "Alkylene" radical contains from 1 to 8 carbon atoms, c. A represents a hydrocarbyl group, an amine substituted hydrocarbyl group, or hydrogen, and d. n represents an integer of from 1 to 10;

Claim 9

said dithiophosphoric acid salt has the following formula: ##EQU7## wherein: e. R 2 and R 3 each independently represent hydrocarbon radicals, and f. M 1 represents a Group II metal cation: 3a. said fatty acid of esters of polyhydric alcohols have the following formula: ##EQU8## 3b. said oil-soluble oxyalkylated derivatives of fatty acid esters of polyhydric alcohols have the following formula: ##EQU9## 3c. said fatty acid amides of low molecular weight amino acids having the following formula: ##EQU10## 3d. said N-fatty alkyl-N,N-diethanol amines, N-fatty alkyl-N,N-di-(ethoxyethanol) amines, and N-fatty alkyl N,N-poly (ethoxy) ethanol amines having the following formula: ##EQU11## wherein: g. R 4 represents an alkylene or alkenylene group containing 10-18 carbon atoms and 0-1 site of olefinic unsaturation; h. R 5 represents the remainder of a dihydric of polyhydric alcohol containing from 2-5 carbon atoms and from 2-4 hydroxyl groups, i. R 6 represents the remainder of a polyhydric alcohol containing from 2-5 carbon atoms and from 2-4 hydroxyl groups; j. R 7 represents an alkylene group containing 2-3 carbon atoms; k. R 8 represents an alkylene group containing from 1-2 carbon atoms; l. R 9 represents an alkyl group containing 1-6 carbon atoms; m. R 10 represents a fatty alkyl group containing from 12-18 carbon atoms; n. x represents 0, 1 or 2; o. y represents 1, 2 or 3; p. z represents an integer from 1-22 such that the total number of --R 7 O-- groups is from 1 to 22; and q. a and b each represent a positive whole integer greater than zero such that the sum of a and b represents a value of from 2-30; and 4.

Claim 10

said dithiophosphoric acid salt has the following formula: ##EQU7## wherein: e. R 2 and R 3 each independently represent hydrocarbon radicals, and f. M 1 represents a Group II metal cation: 3a. said fatty acid of esters of polyhydric alcohols have the following formula: ##EQU8## 3b. said oil-soluble oxyalkylated derivatives of fatty acid esters of polyhydric alcohols have the following formula: ##EQU9## 3c. said fatty acid amides of low molecular weight amino acids having the following formula: ##EQU10## 3d. said N-fatty alkyl-N,N-diethanol amines, N-fatty alkyl-N,N-di-(ethoxyethanol) amines, and N-fatty alkyl N,N-poly (ethoxy) ethanol amines having the following formula: ##EQU11## wherein: g. R 4 represents an alkylene or alkenylene group containing 10-18 carbon atoms and 0-1 site of olefinic unsaturation; h. R 5 represents the remainder of a dihydric of polyhydric alcohol containing from 2-5 carbon atoms and from 2-4 hydroxyl groups, i. R 6 represents the remainder of a polyhydric alcohol containing from 2-5 carbon atoms and from 2-4 hydroxyl groups; j. R 7 represents an alkylene group containing 2-3 carbon atoms; k. R 8 represents an alkylene group containing from 1-2 carbon atoms; l. R 9 represents an alkyl group containing 1-6 carbon atoms; m. R 10 represents a fatty alkyl group containing from 12-18 carbon atoms; n. x represents 0, 1 or 2; o. y represents 1, 2 or 3; p. z represents an integer from 1-22 such that the total number of --R 7 O-- groups is from 1 to 22; and q. a and b each represent a positive whole integer greater than zero such that the sum of a and b represents a value of from 2-30; and 4.

Claim 11

said basic sulfurized alkaline earth metal alkyl phenate is prepared from a compound having the formula: ##SPC2## wherein: r. R 11 represents from 1 to 3 alkyl substituents on the benzene ring.

Claim 12

said basic sulfurized alkaline earth metal alkyl phenate is prepared from a compound having the formula: ##SPC2## wherein: r. R 11 represents from 1 to 3 alkyl substituents on the benzene ring.

Claim 13

. A lubricating oil composition of claim 3 wherein: 1. in said alkenyl succinimide, a. R 1 represents an alkenyl group derived from polyisobutene, b. said "Alkylene" radical contains from 2 to 4 carbon atoms, c. A represents hydrogen, and d. n represents 3, 4 or 5; 2. in said dithiophosphoric acid salt, e. R 2 and R 3 each independently represent a hydrocarbyl radical containing from 4 to 12 carbon atoms, and f. M 1 represents zinc; 3. in said friction modifiers, g. R 4 represents an alkenylene containing 14 to 16 carbon atoms and one site of olefinic unsaturation, k. R 8 represents methylene, l. R 9 represents methyl, m. R 10 represents a fatty alkyl group containing from 12 to 14 carbon atoms, n. x represents 0 or 1, o. y represents 1 or 3 p. z represents an integer from 1 to 7 such that the total number of --R 7 O-- groups is from 1 to 7, and q. a and b each represent 1, 2 or 3; and

Claim 14

in said phenate, r. R 11 represents 1 to 3 alkyl substituents on the benzene ring, each of said substituents containing 4 to 30 carbon atoms.

Claim 15

in said phenate, r. R 11 represents 1 to 3 alkyl substituents on the benzene ring, each of said substituents containing 4 to 30 carbon atoms.

Claim 16

A lubricating oil composition of claim 4 wherein: 1. in said alkenyl succinimide, a. R 1 represents a polyisobutenyl radical having a number average molecular weight of from about 800 to about 1300, b. said "Alkylene" radical contains 2 carbon atoms, and d. n represents 4; 2. in said dithiophosphoric acid salt, e. R 2 and R 3 each independently represent a hydrocarbyl radical containing from 4 to 8 carbon atoms; and 3. in said friction modifiers, j. R 7 represents an alkylene group containing 2 carbon atoms, and g. a and b each represent one.

Claim 17

A lubricating oil composition of claim 5 wherein said composition contains: 1. from 1 to 4 weight percent of said alkenyl succinimide, 2. from 0.5 to l.5 weight percent of said dithiophosphoric acid salt, 3. from 0.05 to 0.8 weight percent of said friction modifier, and 4. from 0.4 to 4 weight percent of said basic sulfurized alkaline earth metal alkyl phenate.

Claim 18

A lubricating oil composition of claim 5 wherein said composition contains: 1. from 1.5 to 2.25 weight percent of said alkenyl succinimide, 2. from 0.75 to 1 weight percent of said dithiophosphoric acid salt, 3. from 0.05 to 0.3 weight percent of said friction modifier, and 4. from 0.8 to 2 weight percent of said basic sulfurized alkaline earth metal alkyl phenate.

Claim 19

A lubricating oil composition of claim 5 wherein said composition contains: 1. from 1.50 to 2.25 weight percent of said alkenyl succinimide, 2. from 0.75 to 1.0 percent weight of said dithiophosphoric acid salt, 3. from 0.1 to 0.6 weight percent of said friction modifier, and

Claim 20

from 0.8 to 2 weight percent of said basic sulfurized alkaline earth metal alkyl phenate.

Claim 21

from 0.8 to 2 weight percent of said basic sulfurized alkaline earth metal alkyl phenate.

Claim 22

A lubricating oil composition of claim 5 wherein said composition contains: 1. from 1.50 to 2.25 weight percent of said alkenyl succinimide, 2. from 0.75 to 1.0 percent weight of said dithiophosphoric acid salt, 3. from 0.1 to 0.2 weight percent of said friction modifier, and 4. from 0.8 to 2 weight percent of said basic sulfurized alkaline earth metal alkyl phenate.

Claim 23

A lubricating oil composition of claim 5 wherein said composition contains: 1. from 1.50 to 2.25 weight percent of said alkenyl succinimide, 2. from 0.75 to 1.0 percent weight of said dithiophosphoric acid salt, 3. from 0.15 to 0.3 weight percent of said friction modifier, and 4. from 0.8 to 2 weight percent of said basic sulfurized alkaline earth metal alkyl phenate.