abstract |
PROBLEM TO BE SOLVED: To provide an alkylated hydroxyaromatic compound which can be used for producing an oil-soluble lubricating oil additive useful as a dispersant in an oily composition. SOLUTION: The at least one hydroxy aromatic compound has a number average molecular weight of more than 10,000 to 20,000. 000 ethylene alpha-olefin polymers having improved viscosity properties formed by alkylation with at least 30% of the polymer chains containing terminal ethenylidene unsaturation. |