# US 4,394,135 A · Liquid hydrocarbon fuel composition

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- Number: US 4,394,135 A
- Document ID: US4394135A
- Status: Granted
- Kind: A
- Application number: 06/156,969
- Filed: 1980-06-06
- Granted: 1983-07-19
- Earliest claimed: 1978-09-25
- Assignees: Mobil Oil Corporation
- Inventors: Harry J. Andress
- Web page: https://patentgrep.com/patent/US4394135A

## CPC

- C10L 1/224: Amides; Imides {carboxylic acid amides, imides (C10L1/221, C10L1/2227 take precedence)}
- 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

A fuel composition comprising a liquid hydrocarbon fuel and a detergent amount of the product of reaction between a polyamine and a stearic acid is described.

## Claims

### Claim 1

A liquid hydrocarbon fuel composition comprising fuel and, as the sole detergent, a detergency amount of the product of reaction between phenylstearic acid and a polyamine of the formula
NH.sub.2 --(C.sub.n H.sub.2n NH).sub.x --C.sub.n H.sub.2n --NH.sub.2
wherein n is from 2 to 4 and x is 1 to 9 and wherein the reactants and employed in proportions such that sufficient acid is present to completely acylate the said polyamine.

### Claim 2 (depends on 1)

The composition of claim 1 wherein the polyamine is tetraethylene pentamine.

### Claim 3 (depends on 1)

The composition of claim 1 wherein said detergency amount is from about 0.00025% to about 0.1% by weight.