# US 5,700,301 A · Fuel additives and method

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- Number: US 5,700,301 A
- Document ID: US5700301A
- Status: Granted
- Kind: A
- Application number: 08/641,189
- Filed: 1996-04-30
- Granted: 1997-12-23
- Earliest claimed: 1993-06-28
- Assignees: Chemadd Limited
- Inventors: Syed Habib Ahmed
- Web page: https://patentgrep.com/patent/US5700301A

## CPC

- C10L 1/14: Organic compounds
- C10L 10/02: for reducing smoke development
- C10L 10/04: for minimising corrosion or incrustation
- C10L 1/1608: {Well defined compounds, e.g. hexane, benzene}
- C10L 1/1616: {fractions, e.g. lubricants, solvents, naphta, bitumen, tars, terpentine}
- C10L 1/1691: {petroleum waxes, mineral waxes; paraffines; alkylation products; Friedel-Crafts condensation products; petroleum resins; modified waxes (oxidised)}
- C10L 1/1824: {mono-hydroxy}
- C10L 1/1857: {Aldehydes; Ketones}
- C10L 1/2222: {(cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates (C10L1/221 takes precedence)}
- F02B 3/06: with compression ignition (compression ignition engines using air or gas for blowing fuel into compressed air in cylinder F02B13/02)
- 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
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)

## Abstract

Disclosed are additives for fuel which comprise certain aliphatic amines and aliphatic alcohols in a paraffin carrier such as kerosene. The additives improve combustion efficiency and fuel economy, and reduce the amount of pollutants and corrosives formed in the combustion process.

## Claims

### Claim 1

A method of improving the combustion efficiency and fuel economy, and reducing the amount of harmful pollutants formed in the combustion process of a combustion system, comprising the step of operating the system with a fuel composition which includes a fuel additive, the additive comprising a liquid solution of from 1 to 20% by volume of the additive, of at least one aliphatic amine selected from the group consisting of diamines and diamine and monoamine combinations; from 2.5 to 20% by volume of the additive of, at least one aliphatic alcohol; and at least one paraffin having a boiling point no greater than 300.degree. C., wherein said paraffin is present in at least 40% by volume of the additive; said aliphatic amine and said aliphatic alcohol having boiling points less than that of said paraffin.

### Claim 2 (depends on 1)

The method of claim 1 wherein the monoamine is a compound selected from the group consisting of diisobutylamine, isopropyl amine and tertiary butylamine.

### Claim 3 (depends on 1)

The method of claim 1, wherein the fuel additive further comprises an ethyl amyl ketone.

### Claim 4 (depends on 1)

The method of claim 1, wherein the fuel additive further comprises n-hexane.

### Claim 5 (depends on 1)

The method of claim 1, wherein the fuel additive further comprises 2,2,4-trimethyl pentane.