# US 2016/0257906 A1 · Silicone modified lubricant

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- Number: US 2016/0257906 A1
- Document ID: US20160257906A1
- Status: Published application
- Kind: A1
- Application number: 15/155,378
- Filed: 2016-05-16
- Published: 2016-09-08
- Earliest claimed: 2013-11-22
- Assignees: Ashland Licensing and Intellectual Property LLC; Imperial Innovations Limited
- Applicants: Ashland Licensing and Intellectual Property, LLC; Imperial Innovations Limited
- Inventors: Anant S. Kolekar; Andrew V. Olver; Adam E. Sworski; Frances E. Lockwood; Gefei Wu; Xiurong Cheng
- Web page: https://patentgrep.com/patent/US20160257906A1

## CPC

- C10M 169/044: {the additives being a mixture of non-macromolecular and macromolecular compounds}
- C10M 101/02: Petroleum fractions
- C10M 125/02: Carbon; Graphite
- C10M 143/00: Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
- C10M 155/02: Monomer containing silicon
- C10M 169/04: Mixtures of base-materials and additives
- C10M 169/041: {the additives being macromolecular compounds only}
- F01M 9/06: Dip or splash lubrication
- C10M 2201/041: Carbon; Graphite; Carbon black
- C10M 2203/1006: used as base material
- C10M 2203/1025: used as base material
- C10M 2205/02: containing acyclic monomers
- C10M 2205/022: Ethene
- C10M 2205/0285: used as base material
- C10M 2205/06: containing conjugated dienes
- C10M 2229/02: Unspecified siloxanes; Silicones
- C10N 2020/01: {Physico-chemical properties}
- C10N 2020/02: Viscosity; Viscosity index
- C10N 2020/06: Particles of special shape or size
- C10N 2030/00: Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N 2030/04: Detergent property or dispersant property
- C10N 2030/06: Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
- C10N 2030/18: Anti-foaming property
- C10N 2030/54: {Fuel economy}
- C10N 2040/04: Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- 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)
- F01M: LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

## Abstract

A silicone modified lubricant includes a Group I, II, III, IV or V base oil in combination with a minor amount of a silicone oil. Further, the lubricant includes a dispersant such as a dispersant olefin copolymer which maintains the silicone oil dispersed in the base oil. The silicone oil reduces the surface tension of the lubricant thereby reducing power loss. Preferably the lubricant formation has a surface tension less than 28 mN/m, making it particularly suitable for dip lubrication systems.

## Claims

### Claim 1

A lubricant formulation comprising:
a base oil selected from a Group consisting of Group I, Group II and Group III and Group IV base oil and combinations thereof;
01 to 5% silicone oil; and
a dispersant olefin copolymer in an amount effective to maintain said silicone oil dispersed in said base oil, wherein said olefin copolymer is soluble in said base oil.

### Claim 2 (depends on 1)

The lubricant claimed in claim 1 wherein said dispersant olefin copolymer is an ethylene propylene copolymer.

### Claim 3 (depends on 2)

The lubricant formulation claimed in claim 2, wherein said dispersant olefin copolymer has an ethylene propylene ratio of 55/45 -45/55.

### Claim 4 (depends on 1)

The lubricant formulation claimed in claim 1, wherein said dispersant olefin copolymer is an ethylene propylene diene terpolymer.

### Claim 5 (depends on 1)

The lubricant formulation claimed in claim 1, having 0.02 to 0.5% silicone oil.

### Claim 6 (depends on 1)

The lubricant formulation claimed in claim 1, having 0.1 to 10% olefin copolymer.

### Claim 7 (depends on 1)

The lubricant formulation claimed in claim 1, wherein said base oil is a Group III base oil.

### Claim 8 (depends on 1)

The lubricant formulation claimed in claim 1, comprising 40-95% PAO.

### Claim 9 (depends on 1)

The lubricant formulation claimed in claim 1, comprising 0.01 to 15% nanographite particles.

### Claim 10 (depends on 1)

The lubricant formulation claimed in claim 1, wherein said base oil includes at least 40% of a Group III or Group IV base oil.

### Claim 11 (depends on 5)

The lubricant formulation claimed in claim 5, comprising 40 to 95% by weight of said base oil.

### Claim 12 (depends on 1)

The lubricant formulation claimed in claim 1, having a surface tension less than 28 mN/m.

### Claim 13 (depends on 12)

The lubricant formulation claimed in claim 12, having a surface tension less than or equal to 25 mN/m.

### Claim 14 (depends on 5)

The lubricant formulation claimed in claim 5, having 0.02 to 0.5% defoamers.