Basf Se Corporation

Basf Aktiengesellschaft

Karin Neubecker

Kai Gumlich

Maria Heuken

Rouven Konrad

Axel Sanner

Maximilian Angel

Marcus Guzmann

Ivette Garcia Castro

Stefan Stein

Frank Dietsche

Dieter Faul

Stefan Frenzel

Edward Bohres

Adam Blanazs

Roland Reichenbach-Klinke

Alexander Göthlich

Alexander Goethlich

Tanja Schneider

Lidcay Herrera Taboada

Copolymers comprising Cto Colefins and at least two different olefindicarboxylic esters and optionally maleic acid or maleic acid derivatives. The olefindicarboxylic esters are firstly esters with linear C- to C-alkyl groups and secondly esters with short-chain linear, branched or cyclic alkyl groups, or esters with aromatic groups. The invention further relates to a process for preparing copolymers of this kind and to the use thereof as pour point depressant for crude oil, mineral oil and/or mineral oil products, preferably as pour point depressant for crude oil.

Copolymers comprising a-olefins and olefin dicarboxylic acid esters, production thereof, and use thereof as pour point depressants for crude oils, mineral oils, or mineral oil products

Polymeric compositions obtainable by free-radical polymerization of at least two different alkyl (meth)acrylates in the presence of at least one ethylene-vinyl ester copolymer, the alkyl (meth)acrylates used being a mixture comprising alkyl (meth)acrylates having linear C- to C-alkyl radicals and different alkyl (meth)acrylates having linear C- to C-alkyl radicals and/or branched C- to C-alkyl radicals and/or cyclic C- to C-alkyl radicals. The use of such polymeric compositions as pour point depressants for crude oils, mineral oils or mineral oil products.

Polymeric compositions as pour point depressants for crude oils

Polymeric compositions composed of ethylene-vinyl ester copolymers alkyl (meth)acrylates, processes for production thereof and use thereof as pour point depressants for crude oils, mineral oils or mineral oil products

Graft copolymers based on a polyamide which was reacted with maleic anhydride and which has at least one vinylically unsaturated side chain are proposed, this grafted side chain containing at least one representative selected from a) N-vinylcaprolactam and/or b) N-vinylpyrrolidone. Inter alia, natural but also synthetic polyamides are provided as preferred polyamide components. Such graft copolymers, but also generally polyamide-based graft copolymers composed of at least one side chain containing ethylenically unsaturated compounds, are in general suitable in construction chemistry applications but also in the development, exploitation and completion of underground mineral oil and natural gas deposits and in deep wells and moreover in the extraction and the transport of oil or gas and here in particular as a gas hydrate inhibitor.

Graft copolymer as a gas hydrate inhibitor

The present invention relates to the use of copolymers A containing

Use of hydrophobically modified copolymers based on N-vinyl monomers for the production of membranes

Proposals are made for a process for preparing polymer solutions and/or polymer dispersions by free-radical addition polymerization and for the use of the polymers prepared, particularly as gas hydrate inhibitors.

Method for producing polymers

Graft polymers are used as gas hydrate inhibitors.

Grafted polymers as gas hydrate inhibitors

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Frankenthal, Germany

Karin Neubecker