Process for preparing highly-basic, magnesium-containing dispersion

Claim 2

A PROCESS FOR PREPARING A FLUID, HIGHYL-BASIC, MAGNESIUMCONTAINING DISPERSION WHEREIN THE PROCESS COMPRISES: A FORMING AN ADMIXTURE OF: I. ABOUT 75 TO ABOUT 125 PARTS OF OIL SOLUBLE DISPERSING AGENT SELECTED FROM THE GROUP CONSISTING OF OIL SOLUBLE SULFONIC ACIDS, MIXTURES OF OIL SOLUBLE SULFONIC ACIDS AND ALIPHATIC HYDROCARBON MONOCARBOXYLIC ACIDS AND THE METAL SALTS THEREOF, II. ABOUT 20 TO ABOUT 90 PARTS MAGNESIUM OXIDE, III. ABOUT 100 TO ABOUT 500 PARTS VOLATILE ALIPHATIC HYDROCARBON SOLVENT HAVING A BOILING POINT BELOW ABOUT 150*C, IV. ABOUT 2 TO ABOUT 30 PARTS OF AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF C1 TO C6 ALIPHATIC ALCOHOLS AND ALKOXY ETHANOLS CONTAINING 3 TO 7 CARBON ATOMS, V. ABOUT 30 TO ABOUT 50 PARTS WATER, AND VI. AMMONIA OR AN AMMONIUM COMPOUND IN AN AMOUNT SUFFICIENT TO PROVIDE ABOUT 0.6 TO ABOUT 9 PARTS AMMOPRESENT, B. TREATING THE ADMIXTURE OF STEP (A) WITH AT LEAST ONE MOLE OF CARBON DIOXIDE PER MOLE OF OVERBASING MAGNESIUM PRESENT, C. ADDING TO THE CARBONATED ADMIXTURE ABOUT 100 TO ABOUT 300 PARTS OF A NONVOLATILE DILUENT OIL HAVING A BOILING POINT ABOVE 160*C, AND D. REMOVING THE VOLATILE MATERIALS, SAID PROCESS BEING CHARACTERIZED FURTHER IN THAT: A. THE MAGNESIUM OXIDE HAS THE FOLLOWING PRO

Claim 3

The process of claim 1 wherein the magnesium oxide has an X-ray crystal size above 105 A.

Claim 4

The process of claim 2 wherein the nonvolatile diluent oil of step (c) is selected from the group consisting of mineral lubricating oils and synthetic lubricating oils.

Claim 5

The process of claim 3 wherein the alcohol of step (a) (iv) is selected from the group consisting of methanol and methoxy ethanol.

Claim 6

The process of claim 4 whErein the alcohol is methanol.

Claim 7

The process of claim 5 wherein the temperature of carbonation in step (b) is in the range of about 25* to about 50*C.

Claim 8

The process of claim 6 wherein the amount of alcohol in step (a) (iv) is in the range of about 0.25 to about 1.5 mole per mole of dispersing agent.

Claim 9

The process of claim 7 characterized further in that the product produced thereby has an acetic base number of at least 400 while having a viscosity below 2000 centistokes at 100*F.

Claim 10

A process for preparing a fluid, highly-basic, magnesium-containing dispersion wherein the process comprises: a. forming an admixture of: i. about 90 to about 110 parts of oil soluble dispersing agent selected from the group consisting of oil soluble sulfonic acids, mixtures of oil soluble sulfonic acids and aliphatic hydrocarbon monocarboxylic acids, and the metal salts thereof, ii. about 30 to about 70 parts magnesium oxide, iii. about 200 to about 400 parts volatile aliphatic hydrocarbon solvent having a boiling point below about 150*C, iv. about 5 to about 20 parts of an alcohol selected from the group consisting of C1 to C6 aliphatic alcohols and alkoxy ethanols containing 3 to 7 carbon atoms, v. about 35 to about 45 parts water, and vi. an ammonia or ammonia compound in an amount sufficient to provide about 0.6 to about 9 parts ammonia, b. treating the admixture of step (a) with at least one mole of carbon dioxide per mole of overbasing magnesium present, c. adding to the carbonated admixture about 150 to about 225 parts of a nonvolatile diluent oil having a boiling point above 160*C, and d. removing the volatile materials, said process being characterized further in that: a. the magnesium oxide has the following properties:

Claim 11

A process for preparing a fluid, highly-basic, magnesium-containing dispersion wherein the process comprises: a. forming an admixture of: i. about 90 to about 110 parts of oil soluble dispersing agent selected from the group consisting of oil soluble sulfonic acids, mixtures of oil soluble sulfonic acids and aliphatic hydrocarbon monocarboxylic acids, and the metal salts thereof, ii. about 30 to about 70 parts magnesium oxide, iii. about 200 to about 400 parts volatile aliphatic hydrocarbon solvent having a boiling point below about 150*C, iv. about 5 to about 20 parts of an alcohol selected from the group consisting of C1 to C6 aliphatic alcohols and alkoxy ethanols containing 3 to 7 carbon atoms, v. about 35 to about 45 parts water, and vi. an ammonia or ammonia compound in an amount sufficient to provide about 0.6 to about 9 parts ammonia, b. treating the admixture of step (a) with at least one mole of carbon dioxide per mole of overbasing magnesium present, c. adding to the carbonated admixture about 150 to about 225 parts of a nonvolatile diluent oil having a boiling point above 160*C, and d. removing the volatile materials, said process being characterized further in that: a. the magnesium oxide has the following properties:

Claim 12

The process of claim 9 wherein the nonvolatile diluent oil is selected from the group consisting of mineral lubricating oils and synthetic lubricating oils.

Claim 13

The process of claim 10 wherein the alcohol of step (a) (iv) is selected from the group consisting of methanol and methoxy ethanol.

Claim 14

The process of claim 11 wherein the alcohol is methanol.

Claim 15

The process of claim 12 wherein the temperature of carbonation in step (b) is in the range of about 25* to about 50*C.

Claim 16

The process of claim 13 wherein the amount of alcohol in step (a) (iv) is in the range of about 0.25 to about 1.5 mole per mole of dispersing agent.

Claim 17

The process of claim 14 wherein the nonvolatile diluent oil is a mineral lubricating oil.

Claim 18

The process of claim 15 characterized further in that the product produced thereby has an acetic base number of at least 400 while having a viscosity below 2000 centistokes at 100*F.

Claim 19

A process for preparing a fluid, highly-basic, magnesium-containing dispersion wherein the process comprises: a. forming an admixture of: i. about 90 to about 110 parts of an oil-soluble sulfonic acid, ii. about 30 to about 70 parts magnesium oxide, iii. about 200 to about 400 parts volatile hydrocarbon solvent having a boiling point below about 160*C, iv. about 5 to about 20 parts of an alcohol selected from the group consisting of methanol and methoxy ethanol, v. about 35 to about 45 parts water, and vi. ammonia or ammonium hydroxide in an amount sufficient to provide about 1.5 to about 6 Parts ammonia, vii. at least about 25 parts nonvolatile diluent oil having a boiling point above 160*C, b. treating the admixture of step (a) with at least one mole carbon dioxide per mole of overbasing magnesium present while maintaining the admixture at a temperature in the range of about 25* to about 50*C, c. adding to the carbonated admixture the amount of nonvolatile diluent oil required to bring the total amount to about 150 to about 225 parts, said nonvolatile diluent oil being selected from the group consisting of mineral lubricating oils and synthetic lubricating oils, and d. removing the volatile materials, said process being characterized further in that: a. the magnesium oxide has the following properties:

Claim 20

A process for preparing a fluid, highly-basic, magnesium-containing dispersion wherein the process comprises: a. forming an admixture of: i. about 90 to about 110 parts of an oil-soluble sulfonic acid, ii. about 30 to about 70 parts magnesium oxide, iii. about 200 to about 400 parts volatile hydrocarbon solvent having a boiling point below about 160*C, iv. about 5 to about 20 parts of an alcohol selected from the group consisting of methanol and methoxy ethanol, v. about 35 to about 45 parts water, and vi. ammonia or ammonium hydroxide in an amount sufficient to provide about 1.5 to about 6 Parts ammonia, vii. at least about 25 parts nonvolatile diluent oil having a boiling point above 160*C, b. treating the admixture of step (a) with at least one mole carbon dioxide per mole of overbasing magnesium present while maintaining the admixture at a temperature in the range of about 25* to about 50*C, c. adding to the carbonated admixture the amount of nonvolatile diluent oil required to bring the total amount to about 150 to about 225 parts, said nonvolatile diluent oil being selected from the group consisting of mineral lubricating oils and synthetic lubricating oils, and d. removing the volatile materials, said process being characterized further in that: a. the magnesium oxide has the following properties:

Claim 21

The process of claim 17 wherein the alcohol of step (a) (iv) is methanol.

Claim 22

The process of claim 18 characterized further in that the product produced thereby has an acetic base number of at least 400 while having a viscosity below 2000 centistokes at 100*F.