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US 5,057,122 AGranted
Diisocyanate derivatives as lubricant and fuel additives and compositions containing same
AssigneeMobil Oil Corporation
InventorsDavid A. Blain, Angeline B. Cardis
Life of this patent
Estimating the term…
Abstract
Reaction products in which polyethers are connected to hydroxyalkylated polyamines using diisocyanates have been found to be effective ashless dispersants and detergents for various lubricants and fuels.
Claims23
A composition comprising a major amount of liquid fuel and a minor detergent/dispersant/antioxidant amount of a product of reaction prepared by reacting a diisocyanate with a polyether and thereafter catalytically or non-catalytically reacting the resultant intermediate product with a hydroxyalkylated polyamine to obtain the final desired product.
Dependencies are inferred from the claim text.