EP0487255A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Composition and process for inhibiting and removing carbonaceous deposits
Assignee: BP Chemicals Ltd
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Filing: 1991-11-14
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Granted: —
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Expires: 2011-11-14
Abstract
Abstract A hydrocarbon fuel composition suitable for an internal combustion engine comprises a hydrocarbon fuel and as a cleaning agent for carbonaceous deposits a compound selected from 1-(3-aminopropyl)-2-pyrrolidinone, 1-(3 aminopropyl) imidazole, N-hydroxyethyl imidazolidinone, N-aminoethyl-imidazolidinone and 2-(2-aminoethylamino) ethanol. The fuel can be a gasoline and include a carrier in which the cleaning agent is first dispersed before blending with the fuel. The carrier can be a lubricating oil, a polyether or a polymer of a C₂ to C₆ monoolefin.
Inventors
- 👤 Sian Catrin Clark
- 👤 Neil Angus Greener
- 👤 Gareth Charles Jeffrey
- 👤 Peyman Ostovar
- 👤 Angus Joseph Dickson Reid
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 18:04
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225; C10L1/143; C10L1/232; C10L10/00; C10L10/06; C10L1/16; C10L1/1608; C10L1/1616; C10L1/1625; C10L1/1633; C10L1/1641; C10L1/18; C10L1/182; C10L1/1822; C10L1/1824; C10L1/185; C10L1/1852; C10L1/192; C10L1/198; C10L1/1985
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
36 words
A hydrocarbon fuel composition suitable for an internal combustion engine comprising a hydrocarbon fuel and, as a cleaning agent for carbonaceous deposits, a compound selected from 1-(3-aminopropyl)-2-pyrrolidinone, 1-(3 aminopropyl) imidazole, N-hydroxyethyl imidazolidinone, N-aminoethyl-imidazolidinone and 2-(2-aminoethylamino) ethanol.
Claim 2
Dependent Claim
38 words
A hydrocarbon fuel composition as claimed in Claim 1 wherein the hydrocarbon fuel is a gasoline and the amount of the cleaning agent is from 10 to 5000 ppm by weight based on the weight of the composition.
Claim 3
Dependent Claim
30 words
A hydrocarbon fuel composition as claimed in Claim 2 which composition further comprises a carrier for the cleaning agent, the carrier being selected from hydrocarbon polymers, polyethers and lubricating oils.
Claim 4
Dependent Claim
31 words
A hydrocarbon fuel composition as claimed in Claim 3 wherein the carrier is present in an amount from 50 to 20,000 ppm by weight based on the weight of the composition.
Claim 5
Dependent Claim
56 words
A concentrate suitable for use in a hydrocarbon fuel in the gasoline boiling range comprising 1 to 40% by weight of a cleaning agent specified in Claim 1 and up to 95% of a carrier selected from hydrocarbon polymers, polyethers and lubricating oils, the % being by weight based on the total composition of the concentrate.
Claim 6
Dependent Claim
18 words
A concentrate as claimed in Claim 5 which further contains up to 75% of a fuel compatible diluent.
Claim 7
Dependent Claim
32 words
A process for removing a carbonaceous deposit from a surface which comprises by contacting the deposit with a cleaning agent selected from 1-(3-aminopropyl)-2-pyrrolidinone, 1-(3 aminopropyl) imidazole, N-hydroxyethyl imidazolidinone, N-aminoethyl-imidazolidinone and 2-(2-aminoethylamino) ethanol.
Claim 8
Dependent Claim
57 words
A process for the operation of an internal combustion engine which process comprises supplying a hydrocarbon fuel to the engine and wherein to reduce carbonaceous deposits in the engine and/or the inlet system thereof the hydrocarbon fuel supplied to the engine contains a cleaning agent selected from 1-(3-aminopropyl)-2-pyrrolidinone, 1-(3 aminopropyl) imidazole, N-hydroxyethyl imidazolidinone, N-aminoethyl-imidazolidinone and 2-(2-aminoethylamino) ethanol.
Claim 9
Dependent Claim
14 words
A process as claimed in Claim 8 whereas the hydrocarbon fuel is a gasoline.
Claim 10
Dependent Claim
15 words
A process as claimed in Claim 8 wherein the hydrocarbon fuel is a diesel fuel.
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