Oil solution of aliphatic acid and aliphatic aldehyde modified high molecular weight mannich reaction products

摘要: Protection against corrosion and deposition of sludge varnish is provided by lubricating oils containing a minor amount the ashless type addition agents which are prepared reacting under conditions Mannich Reaction (1) high molecular weight alkyl-substituted hydroxy aromatic compound, in alkyl-substituent has an average from about 600 to 100,000, (2) amine compound at least one HN < group (3) aliphatic aldehyde, (4) acid six carbon atoms, respective reactant molar ratio 1:0.1-10:1-10:0.014-1.0 further such modified condensation product with 2 6 moles aldehyde per mole compound.