Basf Se Corporation

Basf Aktiengesellschaft

Basf Antwerpen N.v.

Uwe Rebholz

Irene Troetsch-Schaller

Michael Schroers

Ivette Garcia Castro

Frank-Olaf Maehling

Jan Strittmatter

Dieter Faul

Thomas Pfeiffer

Claudius Kormann

Lothar Karrer

Markus Brym

Frank-Olaf Mähling

Thomas Zelinski

Irene Trötsch-Schaller

Anke Oswald

Alex J Attlesey

Heinrich Lubojanski

Andreas Minke

Stephan B Lopes, Ii

Simon Steppan

Ivette Garcia-Castro

Hubert Rehberger

Gero Nordmann

Aleksandra Martyna Gajda

Rehberger Hubert

Kevin Wijmamds

Stephan B Lopes Ii

Jörn Karl

The present invention relates to a copolymer obtainable by copolymerization of (A) at least one unsaturated dicarboxylic acid or derivatives thereof, (B) at least one &#x3b1;-olefin having from at least 6 up to and including 20 carbon atoms, (C) optionally at least one C- to C-alkyl ester of acrylic acid or methacrylic acid or a mixture of such alkyl esters and (D) optionally one or more further copolymerizable monomers other than monomers (A), (B) and (C), with a molar incorporation ratio of (A):(B):(C):(D) of 1:0.5 to 2.0:0 to less than 0.5:0 to 0.1 followed by the reaction with at least one dialkylamine (E), where the two alkyl radicals in the at least one dialkylamine (E) are independently alkyl radicals having at least 17 up to 30 carbon atoms.

Copolymer and use thereof for reducing crystallization of paraffin crystals in fuels

The present invention relates to a novel copolymer, to processes for preparation thereof and to the use thereof.

A copolymer with high chemical homogeneity, consisting of (A) 50 to 30% by weight of ethylene, (B) 50 to 70% by weight of C- to C-hydrocarbyl ester of (meth)acrylic acid, (C) 0 to 5% by weight of (meth)acrylic acid and (D) 0 to 10% by weight of copolymerizable monomers, obtainable by polymerizing a mixture of 80 to 60% by weight of ethylene, 20 to 40% by weight of (meth)acrylic acid and 0 to 10% by weight of copolymerizable monomers in a backmixing, continuous polymerization apparatus, and subsequently polymer-analogously esterifying the resulting copolymer with C- to C-hydrocarbinols. The inventive copolymer is suitable for improving the cold flow properties of fuel oils, for lowering the lower mixing temperature of cold flow improver additives into fuel oils, and for improving the filterability of fuel oils comprising cold flow improver additives.

Copolymer with high chemical homogeneity and use thereof for improving the cold flow properties of fuel oils

A copolymer obtainable by free-radical copolymerization of   This copolymer is suitable for improving the cold flow properties of middle distillate fuels, especially those which consist of or comprise biofuel oils.

Copolymer and use thereof for improving the cold flow properties of middle distillate fuels

The invention relates to the use of polymers which comprise, in copolymerized form, an &#x3b1;-olefin, at least one alkenyl ester and at least one ester of an &#x3b1;,&#x3b2;-unsaturated carboxylic acid with higher alcohols as an additive for fuel oils and lubricants and especially as a cold flow improver in fuel oils; to the fuel oils and lubricants additized with these polymers; and to additive packages comprising such copolymers. The invention also relates to quaternary and higher copolymers which comprise the abovementioned monomers in copolymerized form.

Cold flow improver

Mixture of polar oil-soluble nitrogen compounds and oil-soluble aliphatic compounds for lowering the cloud point in middle distillate fuels

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Mehlingen, Germany

Uwe Rebholz