# US 4,394,134 A · Reducing fuel consumption with a fluorinated compound

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,394,134 A
- Document ID: US4394134A
- Status: Granted
- Kind: A
- Application number: 06/092,861
- Filed: 1979-11-09
- Granted: 1983-07-19
- Earliest claimed: 1977-12-30
- Assignees: Mobil Oil Corporation
- Inventors: Carleton N. Rowe
- Web page: https://patentgrep.com/patent/US4394134A

## CPC

- C10M 147/04: Monomer containing carbon, hydrogen, halogen and oxygen
- C10L 1/208: {containing halogen, oxygen, with or without hydrogen}
- C10M 2213/00: Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M 2213/04: obtained from monomers containing carbon, hydrogen, halogen and oxygen
- C10M 2213/06: Perfluoro polymers
- 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)
- C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS

## Abstract

Polymerizable (that is, e.g., monomeric) polyfluorinated compounds, when added to a lubricant or to a liquid hydrocarbon fuel, as for example gasoline, will cause a reduction in fuel consumption. Reduced fuel consumption may also be realized for long periods from pistons and/or cylinder walls so coated with one or more of the polymerizable compounds.

## Claims

### Claim 1

A method for decreasing fuel consumption in an internal combustion engine by adding to the lubricating oil or liquid hydrocarbon fuel used therein a sufficient amount of a polymerizable polyfluoro monomer compound of the formula ##STR4## wherein R is a C.sub.3 to C.sub.17 aliphatic hydrocarbon group containing from 5 to 35 fluoride groups, R' is hydrogen or a C.sub.1 -C.sub.3 hydrocarbyl group and R" is hydrogen or a C.sub.1 -C.sub.18 hydrocarbyl group and polymerizing said monomer during engine operation to form an amount of a polymer thereof to effect a reduction in fuel consumption of said engine.

### Claim 2 (depends on 1)

The method of claim 1 wherein the monomer is ##STR5##

### Claim 3 (depends on 1)

The method of claim 1 wherein in the lubricating oil the concentration of the monomer is from about 0.05% to about 3% by weight.

### Claim 4 (depends on 3)

The method of claim 3 wherein the concentration of the monomer is from about 0.1% to about 1% by weight.

### Claim 5 (depends on 1)

The method of claim 1 wherein the concentration of the monomer in the liquid fuel is from about 0.001% to about 0.5% by weight.

### Claim 6 (depends on 5)

The method of claim 5 wherein the concentration of the monomer is from about 0.01% to about 0.1% by weight.

### Claim 7 (depends on 1)

The method of claim 1 wherein the lubricating oil is a mineral oil.

### Claim 8 (depends on 1)

The method of claim 1 wherein the fuel used is gasoline.

### Claim 9 (depends on 8)

The method of claim 8 wherein said gasoline is lead-free.

### Claim 10 (depends on 8)

The method of claim 8 wherein said gasoline contains lead.