Aliphatic hydrocarbon substituted aromatic hydrocarbons to control black sludge in lubricants

Patent · Mon Jan 23 23:00:00 EST 1989

OSTI ID:6313183

Murphy, J P

This patent describes a lubricating oil composition which allows the accumulation of black sludge in a gasoline fueled internal combustion engine, the improvement which comprises incorporating into the lubricating oil composition a minor amount, effective to inhibit the accumulation of black sludge in the engine, of an aliphatic hydrocarbon substituted aromatic hydrocarbon which comprises of a composition of the formula Ar-R-(Ar)/sub n/ wherein each Ar is independently an aromatic nucleus having from 0 to 3 substituents, R is a hydrocarbyl group, and n is an integer ranging from 1 to about 6, with the proviso that n does not exceed the available valences of R.

• Assignee: Lubrizol Corp., Wickliffe, OH
• Patent Number(s): US 4800032
• OSTI ID: 6313183
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
33 ADVANCED PROPULSION SYSTEMS
330100 -- Internal Combustion Engines
ADDITIVES
ANTIFOULANTS
AROMATICS
CHEMICAL COMPOSITION
CONTROL
ENGINES
HEAT ENGINES
HYDROCARBONS
INHIBITION
INTERNAL COMBUSTION ENGINES
LUBRICANTS
LUBRICATING OILS
LUBRICATION
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SCALE CONTROL
SLUDGES