Mannich dispersants with enhanced lubricity
AssigneeEthyl Corporation
InventorTimothy J. Henly
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Abstract
Reaction products of i) a compound containing at least one primary or secondary amine group and at least one hydroxyl group; ii) a polyamine containing at least two amine groups wherein at least one of the amine groups is a primary or secondary amine, and wherein component ii) is different from i); iii) an alkyl-substituted hydroxyaromatic compound, and iv) an aldehyde, provide improved detergency as well as improved lubricity to hydrocarbon fuels. Compositions comprising a hydrocarbon fuel and the reaction products are also disclosed.
Claims29
A composition of matter obtained by reacting:
- (i) a compound selected from the group consisting of ethanolamine and diethanolamine;
- (ii) a polyamine containing at least two amine groups wherein at least one of the amine groups is a primary or secondary amine;
- (iii) an alkyl-substituted hydroxyaromatic compound;
- and
- (iv) at least one aldehyde.
A fuel composition comprising:
- (a) a major proportion of a liquid hydrocarbon fuel;
- and
- (b) a dispersant additive, wherein said dispersant additive is obtained by reacting:
- (i) a compound selected from the group consisting of ethanolamine and diethanolamine;
- (ii) a polyamine containing at least two amine groups wherein at least one of the amine groups is a primary or secondary amine;
- (iii) an alkyl-substituted hydroxyaromatic compound;
- and
- (iv) at least one aldehyde.
A process for preparing Mannich reaction products comprising:
- 1) reacting an alkyl-substituted hydroxyaromatic compound (iii), an aldehyde (iv) and a compound selected from the group consisting of ethanolamine and diethanolamine (i);
- and
- 2) reacting the product formed in 1) with an aldehyde (iv) and a polyamine containing at least two amine groups wherein at least one of the amine groups is a primary or secondary amine (ii).
A process for preparing Mannich reaction products comprising:
- 1) reacting an alkyl-substituted hydroxyaromatic compound (iii), an aldehyde (iv) and a polyamine containing at least two amine groups wherein at least one of the amine groups is a primary or secondary amine (ii);
- and
- 2) reacting the product formed in 1) with an aldehyde (iv) and a compound selected from the group consisting of ethanolamine and diethanolamine (i).
Dependencies are inferred from the claim text.