Institut Francais Du Pe'trole

Elf Antar France

Rhone-progil

Gerard Leleu

Alain Forestiere

Bernard Sillion

Jacques Garapon

Jacques Denis

Robert Leger

Despina Vassilakis

Pierre Bedague

Amine phosphate having a terminal imide cycle resulting from the reaction, under formation conditions for an amine salt, of at least one phosphate complying with the general formula (I): ##STR1## in which n is equal to 1 or 2, R.sup.1 is a divalent hydrocarbon group having 1 to 32 carbon atoms, R.sup.6 stands for a hydrogen atom or a hydrocarbon group normally having 1 to 200 carbon atoms, with at least one amine. Preparation process in accordance with standard methods and use of these compounds as additives in fuels for engines, if appropriate in formulations containing a second constituent consisting of at least one product chosen from among the germination additives of paraffins, whereby said formulations can also contain at least one paraffin crystal growth inhibiting product.

Amine phosphates having a terminal cyclic imide

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.

Trimethylolpropane esters useful as base lubricants for motor oils

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Lyons, France

Gerard Leleu