Trimethylolpropane esters useful as base lubricants for motor oils

US4061581A · kind A · utility

Assignees

• INSTITUT FRANCAIS DU PETROLE · FR
• Rhone-Progil · FR

Inventors

• Gerard Leleu · Val-de-Reuil, FR
• Pierre Bedague · Biviers, FR
• Bernard Sillion · Val-de-Reuil, FR

Key dates

• Filing date: Dec 12, 1974
• Grant date: Dec 6, 1977
• Expiry date: Dec 12, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10M2215/065

Abstract

A trimethylolpropane ester composition useful as lubricant base for motor-car engines is prepared by total esterification of trimethylolpropane by means of a mixture of saturated aliphatic carboxylic acids comprising 6-33% by mole of dicarboxylic acids having 4-19 carbon atoms and 94-67 % by mole of monocarboxylic acids whereof 5-90% consists of sparingly branched acids comprising 15-30 carbon atoms and 95-10% of straight chain acids comprising 2-30 carbon atoms.