Salts of Mannich bases and derivatives thereof
AssigneeThe Lubrizol Corporation
InventorCasper John Dorer, Jr.
Life of this patent
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Abstract
Novel compositions, useful as additives for normally liquid fuels to impart dispersancy, anti-icing and rust inhibiting properties thereto, comprise salts of amines prepared by the Mannich reaction between a hydroxy-substituted aromatic compound, usually an alkylphenol in which the alkyl group contains at least about six carbon atoms; formaldehyde or a reversible polymer thereof; and a hydroxyalkyl-substituted amine such as diethanolamine. The acid portion of the salt is preferably derived from a carboxylic acid containing about 14-24 carbon atoms especially an aliphatic radical-substituted succinic acid or an acidic ester thereof. Epoxide adducts of such salts are useful for the same purposes.
Claims36
A composition selected from the group consisting of (1) compounds of the formula ##STR6## R.sup.1 is a hydroxy-substituted aromatic radical, or a hydroxy-substituted aromatic radical which contains as a further substituent an aliphatic radical;
- R.sup.2 is a hydroxy-substituted lower alkyl radical or ##STR7## each of R.sup.3 and R.sup.7 is hydrogen or a lower alkyl or hydroxy-substituted lower alkyl radical;
- R.sup.4 is hydrogen or a lower alkyl radical;
- R.sup.5 is a lower alkylene radical;
- R.sup.6 is a hydroxy-substituted lower alkyl radical;
- Z is one equivalent of an anion;
- and
- x is the valence of R.sup.1 ;
- and (2) epoxide adducts of such compounds.
Dependencies are inferred from the claim text.