Basf Aktiengesellschaft

Basf Corporation

Bernd Wenderoth

Eberhard Ammermann

Hubert Sauter

Siegbert Brand

Gisela Lorenz

Franz Schuetz

Stefan Dambach

Franz Roehl

Gabriele Dralle-Voss

Knut Oppenlander

Ladislaus Meszaros

Dieter Faul

Uwe Fidorra

Thomas Kuekenhoehner

Horst Wingert

Roger G Klimesch

Heinrich Hartmann

Albrecht Harreus

Andreas Deckers

Thomas Ruhl

Klaus Barthold

Hans-Joachim Muller

Uwe Nitzschke

Wolfgang Kasel

Michael Hepp

Ernst-Heinrich Pommer

Wolfgang Rohr

Bernd Lothar Marczinke

Costin Rentzea

Dieter Littmann

Joachim Roser

Marc Heider

Monica Fernandez Gonzalez

Albin Berger

Ludwina Machetanz

Norbert Goetz

Rainer Becker

Knut Oppenlaender

Wolfgang Reuther

Wilhelm Rademacher

Johann Jung

Bernd Mueller

Gunnar Schornick

Dieter Hermeling

Ulf Baus

Wilhelm Weber

Hans-Juergen Raubenheimer

Arthur H&ouml;hn

Knut Oppenl&auml;nder

Winfried Richarz

Karin Sperling-Vietmeier

Wolfgang Steglich

Marco Bergemann

Timm Anke

Gerd Konrad

Erich Schwartz

Jan Nouwen

Thomas R&uuml;hl

Hans-Joachim M&uuml;ller

Michael St&ouml;sser

Bayram Aydin

Jacques Lonchampt

Wolfgang Tuerk

Cisela Lorenz

Gissela Lorenz

Michael Roida

Gisela Horenz

Karlheinz Schäker

Peter Wedel

Gabriele Deckers

Ljiljana Uzelac

Gerhard Weiβ

Ralf Strauss

Gisela Lorezn

The invention relates to antifreeze concentrates which are based on alkylene glycols or derivatives thereof or on glycerin, containing 0.05 to 10 wt. % of one or more cathoxylic acid amides and/or sulfonic acid amides in relation to the total quantity of concentrate.

Antifreeze concentrates based on amides, and coolant compositions comprising them and intended for protecting magnesium and magnesium alloys

The present invention relates to an aqueous antifreeze composition comprising 10 to 50% by weight of one or more dicarboxylic acids, preferably aliphatic dicarboxylic acids having 4 to 12 carbon atoms in the form of the alkali metal, ammonium or alkaline earth metal salt. Preferably, these salts are used in combination with at least one further substance. This gives antifreeze compositions with a good frost protective action, good heat conductivity and good protection against corrosion.

Glycol-free aqueous anti-freeze agent containing dicarboxylic salts

Glycol-free aqueous antifreeze compositions comprising dicarboxylic acid salts

Ready-to-use aqueous coolant compositions having alkylene glycols, glycerol and/or 1,3-propanediol and a) from 0.05 to 10% by weight, based on the total amount of the composition, of one or more polyethylene glycols and/or polypropylene glycols and b) from 0.01 to 10% by weight, based on the total amount of the composition, of one more carboxamides and/or sulfonamides are useful for inhibiting corrosion in the case of magnesium and magnesium alloys.

Antifreeze concentrates and coolant compositions based on polyglycols and amides for protecting magnesium and the alloys thereof

An antifreeze concentrate for cooling systems in fuel-cell drives which gives ready-to-use aqueous coolant compositions having a conductivity of at most 50 &#x3bc;S/cm, based on alkylene glycols or derivatives thereof and containing one or more five-membered heterocyclic compounds (azole derivatives) having 2 or 3 hetero atoms from the group consisting of nitrogen and sulfur, which contain no or at most one sulfur atom and which may carry a fused aromatic or saturated six-membered ring.

Coolant comprising azole derivatives for cooling systems in fuel-cell drives

Methods for cooling a fuel cell include providing in a fuel cell coolant system an aqueous fuel cell coolant composition having an initial electrical conductivity of at most 50 &#x3bc;S/cm. The fuel cell coolant compositions include an alkylene glycol and water solution, and an additive consisting of one or more five membered heterocyclic compounds (azole derivatives) having 2 or 3 heteroatoms selected from the group consisting of nitrogen and sulfur, which contain no or at most one sulfur atom and which may carry a fused aromatic or saturated six-membered ring, and an orthosilicate in an amount to provide a silicon content of from 2 to 2000 ppm by weight.

The invention relates to a method and a device for cooling an internal combustion engine. An aqueous, non-ionic coolant composition is used in a cooling circuit () of the internal combustion engine (). In order to also ensure long-lasting protection against corrosion for light metal components of the engine that come into contact with the coolant, e.g. components made of magnesium or magnesium alloys, the cooling circuit has at least one deionization device (), for example, an ion exchanger, for the coolant.

Method and device for cooling an internal combustion engine

The invention relates to antifreeze concentrates for cooling systems in fuel cell drives, from which are produced ready-to-use aqueous cooling agent compositions having a maximum conductivity of 50 &#x3bc;s/cm, based on alkylene glycols or the derivatives thereof, and containing orthosilicic acid esters of formula (I) wherein the variables Rto Rare the same or different and represent C-Calkyl substituents, C-Calkenyl substituents, C-Chydroxyalkyl substituents, optionally substituted C-Caryl substituents and/or glycol ether substituents of formula (CH&#x2014;CH&#x2014;O)&#x2014;Rwherein Rrepresents hydrogen or C-Calkyl and n represents a number between 1 and 5 

Cooling agents for cooling systems in fuel cell drives

Cooling agents for cooling systems in fuel cell drives containing azole derivatives

Antifreeze concentrates based on alkylene glycols or derivatives thereof or on glycerol, comprising from 0.0005 to 0.1% by weight of the dye C.I. Reactive Violet 5 (Color Index No. 18097), based on the total amount of the concentrate.

Antifreeze concentrate containing the colorant C.I. Reactive Violet 5

Antifreeze concentrates are based on a mixture of at least two different C - to C -dicarboxylic acids, molybdate and a mixture of at least two different triazoles or thiazoles.

Antifreeze concentrates based on dicarboxylic acids, molybdate and triazoles or thiazoles, and coolant compositions comprising them

Paraffin dispersants with a lubricity effect for distillates of petroleum products

Hydraulic fluids, in particular brake fluids for motor vehicles, comprising from 0.01 to 50 wt % of one or more cyclic carboxylates, or cyclic carboxamides, which can carry a linear or branched C -bis C alkyl group on the nitrogen atom.

Hydraulic fluids, containing cyclic carboxylic acid derivatives

In a process for preparing ethylene-vinyl acetate copolymers in which a mixture of ethylene and vinyl acetate is polymerized continuously in the presence of free-radical polymerization initiators and, if desired, molecular weight regulators in a cooled tube reactor at a pressure in the range from 1000 to 3500 bar, and the poly-merization initiator is added at the beginning and at two or more points along the tube reactor, and temperature changes in the reaction mixture along the tube reactor, between the first temperature maximum and the last addition of the polymerization initiator, are within a range of not more than 20&deg; C.

Method for producing ethylene copolymers in segmented tubular reactors and utilizing copolymers as a flow improver

Flow enhancer for petroleum middle distillates

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Lampertheim, Germany

Bernd Wenderoth