Process of preparing metallic detergent-dispersant additives of high alkalinity in particular for lubricating oils, and product obtained thereby

Patent · Tue Oct 06 04:00:00 EDT 1981

OSTI ID:5917152

Demoures, B; Le Coent, J L

A process of preparing metallic detergent-dispersant compositions is provided by: reacting sulfur with an alkylphenol, bearing one or mor c6-c60 alkyl substituents, in the presence of a dilution oil, an alkaline-earth metal alkylbenzene sulfonate of a molecular weight of more than about 300 and a tbn of less than or equal to about 150, an alkaline-earth metal compound, optionally an alkalmetal hydroxide, a base component of metallic detergentdispersant of a tbn greater than or equal to 200 selected from among superalkalinized sulfurized alkaline-earth metal alkylphenates, alkaline-earth metal alkylbenzene sulfonates, and mixtures of superalkalinized sulfurized alkaline earth metal alkylphenates and alkaline-earth metal alkylbenzene sulfonates, and an alkylene glycol, at a temperature of between 100 and 190/sup 0/ carbonating the resultant mixture with carbon dioxide at temperature of between 100 and 200/sup 0/ C, the amount of co2 being between that which can be completely absorbed and an excess of 30 percent of said amount; removing the alkylene glycol; an separating the metallic detergent-dispersant of hig alkalinity thus obtained. The detergent-dispersants thus obtained are useful in improving the detergent-dispersant power of lubricating oils.

• Assignee: Orogil (France)
• Patent Number(s): US 4293431
• OSTI ID: 5917152
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
ADDITIVES
ALCOHOLS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL PREPARATION
DETERGENTS
ELEMENTS
EMULSIFIERS
GLYCOLS
HYDROXY COMPOUNDS
LUBRICANTS
LUBRICATING OILS
METALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
SURFACTANTS
SYNTHESIS
WETTING AGENTS