Basf Aktiengesellschaft

Basf Corporation

Klaus Barthold

Knut Oppenlaender

Richard Baur

Karl Stork

Bernd Wenderoth

Erich Schwartz

Juergen Lasowski

Rolf Fikentscher

Knut Oppenlander

Gabriele Dralle-Voss

Wolfgang Kasel

Brigitte Wegner

Heinrich Hartmann

Johannes P Dix

Hans-Juergen Raubenheimer

Hans-Henning Vogel

Juergen Mohr

Juergen Thomas

Rainer Strickler

Gerd Konrad

Franz-Dieter Martischius

Roland Schwen

Wilhelmus Slotman

Wilfried Sager

Gert Liebold

Guenther Elfers

Manfred Schramm

Egon Buettner

Dieter Karau

Stevano Crema

Werner Arnold

Reaction products of aminoalkylenecarboxylic acids and mineral oil

A method of demulsifying a crude oil and water composition involves adding demulsifiers made from acrylic acid/methacrylic acid copolymerized with hydrophilic monomers.

Method of demulsifying crude oil and water mixtures with copolymers of

The present invention relates to the use of trialkanolamine polyethers obtained by condensation of one or more trialkanolamines in the presence of phosphorous acid and/or hypophosphorous acid as demulsifiers for oil-in-water emulsions.

Use of trialkanolamine polyethers as demulsifiers for oil-in-water

Mineral oil middle distillate compositions based on hydrocarbon mixtures whose boiling range begins at above 160.degree. C. and ends at below 420.degree. C. contain, as paraffin dispersants, reaction products of aminoalkylenecarboxylic acids with primary or secondary long-chain amines.

Mineral oil middle distillate compositions

An Otto-cycle engine fuel containing a small amount of an amide, amide/ammonium salt and/or ammonium salt of an aminoalkylene polycarboxylic acid and a long-chain secondary amine as additive for cleaning the carburetor and valves.

Fuel for Otto-cycle engines

Crude oil middle distillates with improved cold flow properties, containing small amounts of

Middle distillates of crude oil having improved cold flow properties

Novel reaction products of aminoalkylene polycarboxylic acids with secondary amines and their use as additives to middle distillates together with conventional ethylene copolymers as flow improvers and conductivity improves.

Novel reaction products of aminoalkylene polycarboxylic acids with

Alkoxylated amido-containing polyamines which are suitable as oil demulsifiers are obtainable by condensing a dicarboxylic acid of 3 to 20 carbon atoms or one of its functional derivatives with a polyalkylenepolyamine having 2 or more carbon atoms and 2 or more amino groups and reacting the product with a total of from 1 to 200 moles/mole of ethylene oxide and/or propylene oxide and/or 1,2-butylene oxide.

Alkoxylated amido-containing polyamines and their use for breaking

Polyethers with are suitable as oil demulsifiers are obtainable by reacting

Polyethers obtainable by reacting alkylolated

Crosslinked oxyalkylated polyalkylenepolyamines which can be obtained by reacting polyalkylenepolyamines, which are completely oxyalkylated at the nitrogen atoms, in each case by from 10 to 300 groups, and possess from 50 to 2,000 repeating alkyleneimine units in the molecule, with from 0.5 to 10% by weight, based on the oxyalkylated polyalkylenepolyamines, of a crosslinking compound which possesses two or more functional groups which are capable of reacting with the terminal alcohol groups of the oxyalkylated polyalkylenepolyamines, and a process for breaking water-in-oil emulsions.

Crosslinked oxyalkylated polyalkylenepolyamines

The invention relates to a process for optimizing the properties of aqueous polymer solutions used for polymer flooding which comprises treating the polymer solutions under turbulent flow conditions in dynamic fluid dispersing or pumping equipment such that the residence time of the polymer solution in this equipment is less than approximately 20 seconds and the pump energy used is from about 1 to about 15 watts/liter of solution processed. This process permits the optimization of flow properties important in polymer flooding which results in the improved efficiency of the polymer flooding process.

Process for optimizing the properties of aqueous polymer solutions used

Oxyalkylated polyamidoamines are obtained by reacting a polyamine with caprolactam and oxyalkylating the product with alkylene oxides, and are used for rapidly dewatering crude oil.

Oxyalkylated polyamidoamines and their preparation

The subject invention relates to compositions which inhibit the corrosion caused by CO.sub.2 and H.sub.2 S in the transport and storage of crude oils, which are generally water-in-oil, in particular salt-water-in-oil emulsions. The corrosion inhibitors are mixtures of certain imidazoline or tetrahydropyrimidine derivatives, precursors thereof, or their complexes with sulfur and certain maleinamidic acids.

Inhibitors against corrosion caused by CO.sub.2 and H.sub.2 S in

The subject invention relates to salts of polymaleic acids having a molecular weight between 200 and 1500 and to their use in preventing the corrosion of metal caused by hydrogen sulfide and carbon dioxide in water-in-oil emulsions such as crude oil.

Ammonium salts of polymaleic acids and use as corrosion inhibitors in

Polyhydroxy-polyalkylene-polyamine salts of maleic amide acids are useful metal corrosion inhibitors for use in water-in-oil emulsions.

Growing community of inventors

Mannheim, Germany

Klaus Barthold