Unsulfurized alkali metal-free, additive for lubricating oils

Details Unsulfurized alkali metal-free, additive for lubricating oils Unsulfurized alkali metal-free, additive for lubricating oils

1999-01-26

2000-12-19

Medley, Margaret

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic -co- compound

508575, C10M12900

Patent

active

061627704

ABSTRACT:
An unsulfurized, alkali metal-free, detergent-dispersant composition having from 40% to 60% alkylphenol, from 10% to 40% alkaline earth alkylphenate, and from 20% to 40% alkaline earth single aromatic-ring alkylsalicylate. This composition may have an alkaline earth double aromatic-ring alkylsalicylate as long as the mole ratio of single-ring alkylsalicylate to double aromatic-ring alkylsalicylate is at least 8:1. This composition may be produced by the three-step process involving neutralization of alkylphenols, carboxylation of the resulting alkylphenate, and filtration of the product of the carboxylation step.

REFERENCES:
patent: 3036971 (1962-05-01), Otto
patent: 3755170 (1973-08-01), Rogers
patent: 4435301 (1984-03-01), Brannen et al.
patent: 5330665 (1994-07-01), Cane et al.

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