# US 2013/0157907 A1 · Process for the manufacture of a grease composition

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- Number: US 2013/0157907 A1
- Document ID: US20130157907A1
- Status: Published application
- Kind: A1
- Application number: 13/808,013
- Filed: 2011-07-01
- Published: 2013-06-20
- Earliest claimed: 2010-07-05
- Assignees: Shell Oil Company
- Inventors: Jean-Luc Pierre André Brossaud
- Web page: https://patentgrep.com/patent/US20130157907A1

## CPC

- C10M 129/28: having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M 113/00: Lubricating compositions characterised by the thickening agent being an inorganic material
- C10M 117/02: having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
- C10M 117/04: containing hydroxy groups
- C10M 117/06: having more than one carboxyl group bound to an acyclic carbon atom or cycloaliphatic carbon atom
- C10M 117/08: having only one carboxyl group bound to a carbon atom of a six-membered aromatic ring
- C10M 125/10: Metal oxides, hydroxides, carbonates or bicarbonates
- 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 2201/087: Boron oxides, acids or salts
- C10M 2201/0876: used as thickening agent
- C10M 2207/122: monocarboxylic
- C10M 2207/1225: used as thickening agent
- C10M 2207/123: polycarboxylic
- C10M 2207/1236: used as thickening agent
- C10M 2207/124: containing hydroxy groups; Ethers thereof
- C10M 2207/1265: used as thickening agent
- C10M 2207/127: polycarboxylic
- C10M 2207/1276: used as thickening agent
- C10M 2207/128: containing hydroxy groups; Ethers thereof
- C10M 2207/1285: used as thickening agents
- C10M 2207/141: monocarboxylic
- C10M 2207/1415: used as thickening agent
- C10N 2010/02: Groups 1 or 11
- C10N 2010/04: Groups 2 or 12
- C10N 2010/06: Groups 3 or 13
- C10N 2010/08: Groups 4 or 14
- C10N 2020/055: {Particles related characteristics}
- C10N 2030/06: Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
- C10N 2040/02: Bearings
- C10N 2040/04: Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N 2050/10: semi-solid; greasy
- C10N 2070/00: Specific manufacturing methods for lubricant compositions
- 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

Processes for the manufacture of metal complex grease compositions are provided. In one embodiment, the process comprises: preparing a slurry comprising a base oil, water, a metal base and a complexing agent, wherein the weight ratio of water:solid in the slurry is in the range of from 0.15:1 to 1.5:1; applying shear to the slurry; adding a C10-C24 saturated or unsaturated fatty acid or derivative thereof to effect a saponification reaction; removing water from the saponified product; heating the saponified product at a temperature in the range of from 190 to 230° C.; and subsequently cooling the product to a temperature in the range of from 200 to 150° C. to form the metal complex grease composition.

## Claims

### Claim 1

A process for the manufacture of a metal complex grease composition comprising the steps of:
(i) preparing a slurry comprising a base oil, water, a metal base and a complexing agent, wherein the weight ratio of water:solid in the slurry is in the range of from 0.15:1 to 1.5:1;
(ii) applying shear to the slurry at a shear frequency of at least 1,000,000 s−1;
(iii) adding the slurry emerging from step (ii) to a C10-C24 saturated or unsaturated fatty acid or derivative thereof to effect a saponification reaction, the saponification reaction being carried out at a temperature of at least 80° C.;
(iv) removing water from the saponified product resulting from step (iii);
(v) heating the product emerging from step (iv) at a temperature in the range of from 190 to 230° C.; and
(vi) cooling the product emerging from step (v) to a temperature in the range of from 200 to 150° C. to form the metal complex grease composition.

### Claim 2 (depends on 1)

The process according to claim 1 wherein the weight ratio of water:solid in the slurry is in the range of from 0.2:1 to 1:1.

### Claim 3 (depends on 1)

The process according to claim 1 wherein the shear frequency is at least 1,500,000 s−1.

### Claim 4 (depends on 1)

The process according to claim 1 wherein step (ii) is carried out by a high shear mixer having at least one square holes screen.

### Claim 5 (depends on 4)

The process according to claim 4 wherein the high shear mixer comprises two square holes screens.

### Claim 6 (depends on 1)

The process according to claim 1 wherein the process comprises an additional step (vii):
(vii) adding performance additives to the metal complex grease composition.

### Claim 7 (depends on 1)

The process according to claim 1 wherein the metal base is selected from the group consisting of: lithium hydroxide, calcium hydroxide, aluminium hydroxide, titanium hydroxide and mixtures thereof.

### Claim 8 (depends on 1)

The process according to claim 1 wherein the metal base is lithium hydroxide.

### Claim 9 (depends on 1)

The process according to claim 1 wherein the complexing agent is selected from a low to medium molecular weight acid or diacid.

### Claim 10 (depends on 1)

The process according to claim 1 wherein the complexing agent is selected from the group consisting of: boric acid, sebacic acid, azelaic acid, benzoic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, suberic acid, pimelic acid, dodecanedioic acid, and mixtures thereof.

### Claim 11 (depends on 1)

The process according to claim 1 wherein the complexing agent is boric acid.

### Claim 12 (depends on 1)

The process according to claim 1 wherein the C10-C24 saturated or unsaturated fatty acid or derivative thereof is 12-hydroxy stearic acid.

### Claim 13

(canceled)