Lubricant overbased detergent-dispersants with improved solubility

Patent · Tue Sep 30 04:00:00 EDT 1986

OSTI ID:5195724

Valcho, J J; Slama, F J; Strukl, J S; Park, C M

This patent describes a lubricating composition comprising a major amount of a lubricating oil composition and a minor amount of an over-based detergent-dispersant lubricant additive, in an amount of from about 0.5% to about 15% by weight of the total weight of the lubricating oil composition. The additive comprises a reaction product of an alkaline earth metal phenate, and an ammonium alkylbenzene sulfonate. The phenate and the sulfonate are reacted in the presence of an alcohol to 1 to 4 carbon atoms, at a temperature of from about 25/sup 0/C to about 90/sup 0/C and pressure of from about 0.5 to about 7 atmospheres. The reaction product is stripped at a temperature of from about 100/sup 0/C to about 200/sup 0/C and pressure of from about 0.1 to about 1 atmosphere, to remove ammonia water and the alcohol.

• Assignee: Amoco Corp., Chicago, IL
• Patent Number(s): US 4614602
• OSTI ID: 5195724
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
ABS
ADDITIVES
ALCOHOLS
ALKALINE EARTH METAL COMPOUNDS
AMMONIA
AMMONIUM COMPOUNDS
CARBON
CHEMICAL COMPOSITION
DETERGENTS
ELEMENTS
EMULSIFIERS
ESTERS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
LUBRICANTS
LUBRICATING OILS
MEDIUM PRESSURE
MEDIUM TEMPERATURE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
OILS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
QUANTITY RATIO
SOLUBILITY
SULFONIC ACID ESTERS
SURFACTANTS
WATER
WETTING AGENTS