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US 4,058,468 AGranted
Lubricant composition
AssigneeEthyl Corporation
InventorRobert E. Malec
Life of this patent
Estimating the term…
Abstract
A dispersant-antiwear lubricating oil additive is made by reacting a high molecular weight hydrocarbon-substituted phenol with aldehyde and ammonia or amines having a reactive hydrogen atom to form a Mannich condensation product which is reacted with an alkylene oxide and P.sub.2 S.sub.5 to form the additive.
Claims22
A lubricating oil composition comprising a major amount of lubricating oil and a minor amount, sufficient to improve dispersancy, of an additive made by:
- A. reacting one mole part of a poly C.sub.2-4 olefin substituted phenol wherein said polyolefin substituent has an average molecular weight of from about 650 to 5000 with from about 1-10 mole parts of a C.sub.1-4 aldehyde and from about 0.1-10 mole parts of a nitrogen compound, said nitrogen compound being selected from the group consisting of ammonia and amines containing at least one HN<
- group and containing from 1 to about 20 carbon atoms at reaction temperature to form a Mannich condensation product,
- B. reacting said condensation product with about 0.1-50 mole parts of an alkylene oxide containing from 2 to about 6 carbon atoms to form an alkoxylated product, and
- C. reacting said alkoxylated product with about 0.05 to 1 mole part of P.sub.2 S.sub.5 at reaction temperature to form said additive.
1 more element
Dependencies are inferred from the claim text.