Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Hydroxyalkyl hydroxy-aromatic condensation products as fuel and lubricant additives

Patent ·
OSTI ID:5996757
Condensation products made by reacting an alpha -hydroxyalkyl hydroxy-aromatic compound also having at least one non-fused hydrocarbyl substituent with at least one olefinic nitrile, carboxylic acid or carboxylic acid derivative are useful as additives for fuels and lubricants. The total number of carbon atoms in the non-fused hydrocarbyl substituents is at least about 7 while the alpha hydroxyalkyl group contains from 1 to about 3 carbons and the olefinic acid or nitrile reactant usually contains 2 to about 40 carbon atoms. Products made from hydroxymethyl alkyl-substituted phenols and alpha , beta olefinic acid derivatives such as maleic anhydride are particularly useful. Similarly useful post-treated products can be made from these condensation products by further reaction with alcohols, amines, metal salts or metals.
Assignee:
Lubrizol Corp The
Patent Number(s):
US 4205960
OSTI ID:
5996757
Country of Publication:
United States
Language:
English