Fuel compositions
AssigneeEthyl Corporation
InventorsDennis J. Malfer, Lawrence J. Cunningham
Life of this patent
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Abstract
This invention relates to a novel fuel additive composition which provides reduced engine deposits and control of octane requirement increase in engines. The composition comprises: a) a Mannich reaction product of (i) a high molecular weight alkyl-substituted phenol, (ii) amine, and (iii) aldehyde wherein the ratio of (i) to (ii) to (iii) in the reaction is within the range of from 1.0:0.1-10:0.1-10; b) a polyoxyalkylene compound; and c) optionally, poly-.alpha.-olefin; wherein the additive composition contains from about 50 to about 90 wt. % of (a), from about 10 to about 50 wt. % of (b), and from about 0 to about 40 wt. % of (c).
Claims33
A fuel additive composition for control of intake valve deposits formed by mixing together at least the following ingredients:
- (a) a Mannich reaction product formed from (i) a high molecular weight alkyl-substituted phenol wherein the alkyl group has a number average molecular weight (Mn) of from about 600 to about 3000, (ii) amine, and (iii) aldehyde in a molar ratio of (i) , (ii) and (iii) within the range of from 1.0:0.1-10:0.1-10, respectively;
- (b) a polyoxyalkylene glycol monoether compound formed by reacting an alcohol with 1,2-propylene oxide and having a number average molecular weight in the range of from about 500 to about 3000;
- and
- (c) optionally, poly-.alpha.-olefin in proportions of from about 50 to about 90 wt. % of (a), from about 10 to about 50 wt. % of (b), and from 0 to about 40 wt. % of (c).
A fuel composition comprising a gasoline fuel with which has been blended in an amount sufficient to reduce or inhibit deposit formation on intake valves:
- (a) a Mannich reaction product formed from (i) a high molecular weight alkyl-substituted phenol wherein the alkyl group has a number average molecular weight (Mn) of from about 600 to about 3000, (ii) amine, and (iii) aldehyde in a molar ratio of (i) , (ii) and (iii) within the range of from 1.0:0.5-2.0:1.0-3.0, respectively;
- (b) a polyoxyalkylene compound having a number average molecular weight in the range of from about 1000 to about 2,000, said polyoxyalkylene compound being a polyoxyalkylene glycol monoether formed by reacting an alcohol with 1,2-propylene oxide;
- and
- (c) optionally, poly-.alpha.-olefin in proportions of from about 50 to about 90 wt. % of (a), from about 10 to about 50 wt. % of (b), and from 0 to about 40 wt. % of (c).
A fuel composition comprising a gasoline fuel with which has been blended in an amount sufficient to reduce or inhibit deposit formation on intake valves, a composition formed by mixing together at least the following ingredients:
- (a) a Mannich reaction product formed from (i) a high molecular weight alkyl-substituted phenol wherein the alkyl group has a number average molecular weight (Mn) of from about 600 to about 3000;
- (ii) amine, and (iii) aldehyde in a molar ratio of (i), (ii) and (iii) within the range of from 1.0:0.1-10:0.1-10, respectively;
- and
- (b) a polyoxyalkylene glycol monoether compound formed by reacting an alcohol with 1,2-propylene oxide and having a number average molecular weight in the range of from about 500 to about 3000;
- and in proportions of from about 50 to about 90 wt. % of (a) and from about 10 to about 50 wt. % of (b).
A fuel additive composition formed by mixing together at least the following ingredients:
- (a) a Mannich reaction product formed from (i) a high molecular weight alkyl-substituted phenol wherein the alkyl group has a number average molecular weight (Mn) of from about 600 to about 3000;
- (ii) amine, and (iii) aldehyde in a molar ratio of (i), (ii) and (iii) within the range of from 1.0:0.1-10:0.1-10, respectively;
- and
- (b) a polyoxyalkylene glycol monoether compound formed by reacting an alcohol with 1,2-propylene oxide and having a number average molecular weight in the range of from about 500 to about 3000;
- and in proportions of from about 50 to about 90 wt. % of (a) and from about 10 to about 50 wt. % of (b).
Dependencies are inferred from the claim text.