Elf Antar France

Institut Francais Du Pe'trole

Henkel Kommanditgesellschaft Auf Aktien

Despina Vassilakis

Robert Leger

Alain Forestiere

Wolfgang Ritter

Stephan Von Tapavicza

Jean Gaillard

Jacques Garapon

Jacques Denis

Jean-Marie Letoffe

Pierre Claudy

Gerard Leleu

Catherine Mallet

Thomas Reichert

Yann Faure

Nathalie Cerqueda

A middle petroleum distillate composition containing a major proportion of middle petroleum distillate and a minor proportion of an additive in a sufficient amount to limit the settling speed of paraffins contained in said middle distillate. Said additive consists of a product resulting from a reaction between at least one aliphatic dicarboxylic compound and at least one primary amine functional compound of general formula (I), wherein Ris a monovalent saturated aliphatic radical, Z is selected from &#x2014;NR'&#x2014; groupings in which R&#x2032; is a hydrogen atom or a monovalent saturated aliphatic radical, n is an integer between 2 and 4, and m is an integer between 1 and 4; said primary amine functional compound being used in a ratio of 0.3-0.8 mols per mol of said dicarboxylic compound.

Petroleum middle distillate composition containing a substance for limiting the paraffin sedimentation rate

Method and device for determining the low-temperature stability of a

Additive composition for cold operability of middle distillates

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

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Lyons, France

Despina Vassilakis