Basf Se Corporation

Evonik Oil Additives Gmbh

Evonik Operations Gmbh

Basf Aktiengesellschaft

Frank-Olaf Maehling

Irene Troetsch-Schaller

Wolfgang Ahlers

Uwe Rebholz

Andreas Fechtenkoetter

Ansgar Eisenbeis

Rhishikesh Gokhale

Arno Lange

Dietmar Posselt

Claudius Kormann

Jan Strittmatter

Klaus Schimossek

Anja Vinckier

Miriam Kathrin Stihulka

Brian J Hess

Michael Schroers

Ivette Garcia Castro

Thomas Pfeiffer

Thomas Zelinski

Michael Neusius

Stefan Hilf

Ronny Sondjaja

Gabriela Fedor

Sandra Muehling

Justin August Langston

Alex J Attlesey

Ivette Garcia-Castro

Qi Xiao

Sandra Gebhardt

Barbara Voltz

Stephan B Lopes, Ii

Michael G Duckworth

Andreas Minke

Heinrich Lubojanski

Julien Couet

Dennis Thong

Stefan Karl Maier

Marie A Malitsky

Rene Koschabek

A method for the preparation of a copolymer containing at least one alkyl methacrylate and maleic anhydride having a number average molecular weight of 4000 to 18000 g/mol proceeds by solution polymerization in the presence of a radical initiator.

Method for the preparation of copolymers of alkyl methacrylates and maleic anhydride

The present application relates to compositions comprising at least one polyalkyl(meth)acrylate polymer, a graft copolymer comprising a copolymer based on ethylene as graft base and one or more polyalkyl(meth)acrylate polymer(s) grafted thereon, and at least one non-grafted ethylene-based copolymer, as well as to the use of such compositions to improve the performance, especially the cold flow properties and injector nozzle coking tendency of middle distillates, especially diesel fuels, biodiesel and blends thereof.

Cold flow improver with broad applicability in mineral diesel, biodiesel and blends thereof

The use is described of polymers which contain, in copolymerized form, an &#x3b1;-olefin, a vinyl ester and an ester of an &#x3b1;,&#x3b2;-unsaturated carboxylic acid as an additive for fuel oils and lubricants and in particular as a cold flow improver in fuel oils. In addition, the fuel oils and lubricants additized with these polymers; and also additive packages comprising such polymers are described.

Fuel oil compositions with improved cold flow properties

The present invention relates to a method for the preparation of a sulfur-free copolymer comprising at least one alkyl methacrylate and maleic anhydride having a number average molecular weight of 3000 to 9000 g/mol by solution polymerization in the presence of a radical initiator.

A method for the preparation of a sulfur-free copolymer proceeds by solution polymerization in the presence of a radical initiator, wherein the copolymer contains at least one alkyl methacrylate and maleic anhydride having a number average molecular weight of 3000 to 9000 g/mol.

An additive formulation suitable for antistatic modification and improving the electrical conductivity of inanimate organic material, consisting essentially of

Additive formulation suitable for antistatic modification and improving the electrical conductivity of inanimate organic material

The present invention relates to a process for preparing grafted polyalkyl(meth)acrylates (PAMAs) containing dispersant repeating units in the polymer backbone as well as in the grafted layer, which polymers are characterized by a low sulfur content, the products available by this process and their use as an additive to fuels, especially to middle distillates and blends thereof. The present invention further relates to a composition comprising the grafted polyalkyl(meth)acrylates prepared by the process according to the present invention and the use of said composition as an additive component to fuels, especially to middle distillates and blends thereof, and for improving the cold flow properties of fuel oil and fuel oil compositions, especially to middle distillate fuels and blends thereof.

Process for preparing low sulfur dispersant polymers

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

An additive formulation suitable for antistatic modification and improving the electrical conductivity of inanimate organic material, consisting essentially of (A) from 1 to 50% by weight of an olefin-sulfur dioxide copolymer, (B) from 1 to 50% by weight of a compound which comprises one or more basic nitrogen atoms and has at least one relatively long-chain linear or branched hydrocarbon radical having at least four carbon atoms or an equivalent structural element which ensures the solubility of component (B) in the inanimate organic material,(C) from 0.1 to 30% by weight of an oil-soluble acid and(D) from 1 to 80% by weight of a high-boiling organic solvent which consists of one or more molecule types, where at least 80% by weight of these molecule types have a boiling point of more than 150&#xb0; C. at standard pressure,where the sum of all components adds up to 100% by weight.

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

Growing community of inventors

Mannheim, Germany

Frank-Olaf Maehling