LOW TEMPERATURE OPERABILITY ADDITIVE COMPOSITIONS OF AVERAGE DISTILLATES

• Main Authors: REICHERT, THOMAS, RITTER, WOLFGANG, VASSILAKIS, DESPINA, CERQUEDA, NATHALIE, LEGER, ROBERT, VON TAPAVICZA, STEPHAN
• Format: Patent
• Language: English; French
• Published: 06.04.1995
• Edition: 6
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; NATURAL GAS; ORGANIC MACROMOLECULAR COMPOUNDS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP

Additive composition enhancing the low temperature operability of average distillates beyond -20 DEG C comprising at least 40 % by weight of a composition consisting of: i) from 60 to 94 % by weight of an antisedimentation additive resulting from the reaction of at least one aliphatic dicarboxylic compound and one polyamine of general formula (II) wherein R is a saturated aliphatic radical comprising from 1 to 32 carbon atoms, n is 2-4 and m is 1-4; and ii) 6-40 % by weight of a dispersing-stabilizing additive having a molecular weight varying from 15000 to 50000 resulting from the esterification reaction of a linear alcohol having from 6 to 24 atoms with an organic acid such as maleic acid and its halides, the ester obtained being polymerized with itself or a copolymerizing compound selected from aliphatic dicarboxylic compounds. Composition d'additifs améliorant l'opérabilité à froid des distillats moyens au-delà de -20 DEG C comportant au moins 40 % en poids d'une composition constituée de: i) 60 à 94 % en poids d'un additif d'antisédimentation résultant de la réaction d'au moins un composé dicarboxylique aliphatique et d'une polyamine de formule générale (II) où R est un radical aliphatique saturé comprenant de 1 à 32 atomes de carbone, n est compris entre 2 et 4 et m entre 1 et 4; et ii) 6 à 40 % en poids d'un additif dispersant-stabilisant de masse moléculaire comprise entre 15000 et 50000 résultant d'une réaction d'estérification d'un alcool linéaire ayant 6 à 24 atomes de carbone avec un acide organique tel que l'acide maléique et ses halogénures, l'ester obtenu étant polymérisé avec lui-même ou un composé copolymérisant choisi parmi les composés dicarboxyliques aliphatiques.