# US 6,719,815 B2 · Fuel composition

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- Number: US 6,719,815 B2
- Document ID: US6719815B2
- Status: Granted
- Kind: B2
- Application number: 10/169,121
- Filed: 2002-09-18
- Published: 2003-04-03
- Granted: 2004-04-13
- Earliest claimed: 1999-12-27
- Assignees: Purac Biochem B.V.
- Inventors: Gerrit Leendert Nanninga; Jan Van Breugel
- Web page: https://patentgrep.com/patent/US6719815B2

## CPC

- C10L 1/026: {for compression ignition}
- Y02E 50/10: Biofuels, e.g. bio-diesel
- 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
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

The invention relates to a fuel composition which comprises a diesel fuel, a C1-C4 alkyl ester of an α-hydroxymonocarboxylic acid and, if appropriate, a C1-C4 alcohol. The diesel fuel is either obtained from petroleum or from a petroleum fraction, such as middle distillate, or is obtained by conversion of material of biological origin (so-called biodiesel). The fuel composition preferably contains from 3 to 6% by weight of C1-C4 alkyl ester, calculated on the basis of the total weight of the composition.

## Claims

### Claim 1

A Fuel composition comprising a diesel fuel, a C1-C4-alkyl ester of an α-hydroxymonocarboxylic acid and 0.05 to 1.0% by weight of an C1-C4 alcohol, calculated on the basis of the total weight of the composition.

### Claim 2 (depends on 1)

The fuel composition according to claim 1, wherein the diesel fuel comprises a biodiesel.

### Claim 3 (depends on 1)

The fuel composition according to claim 1 in which the α-hydroxymonocarboxylic acid is a lactic acid.

### Claim 4 (depends on 1)

The fuel composition according to claim 1, wherein the C1-C4 alkyl ester of the α-hydroxymonocarboxylic acid is ethyl lactate.

### Claim 5 (depends on 1)

The fuel composition according to claim 1, wherein the C1-C4 alcohol is ethanol.

### Claim 6 (depends on 1)

The fuel composition according to claim 1, wherein contains from 3 to 6% by weight C1-C4 alkyl ester, calculated on the basis of the total weight of the composition.

### Claim 7 (depends on 1)

The fuel composition according to claim 1, wherein contains from 4 to 5% by weight C1-C4 alkyl ester, calculated on the basis of the total weight of the composition.

### Claim 8 (depends on 1)

The fuel composition according to claim 1, wherein contains from 4 to 5% by weight C1-C4 alkyl ester and 0.1 to 0.5% by weight C1-C4 alcohol, calculated on the basis of the total weight of the composition.

### Claim 9 (depends on 1)

The fuel composition according to claim 1, wherein the fuel composition comprises a diesel fuel which has been prepared from middle distillates.