Basf Aktiengesellschaft

Basf Se Corporation

Stefan Dambach

Bernd Wenderoth

Ladislaus Meszaros

Uwe Fidorra

Uwe Nitzschke

Monica Fernandez Gonzalez

Ludwina Machetanz

Harald Dietl

Marco Bergemann

Bayram Aydin

Gerhard Weiβ

Monica Fernandez-Gonzalez

A functional fluid composition useful as a brake fluid comprising from 0 to 94.99% by weight of alkoxy glycols of borate esters, from 5 to 99.99% by weight of alkoxy glycols, from 0.01 to 5% by weight of alkoxylates of saturated or unsaturated hydroxy-substituted fatty acids such as ricinoleic acid or esters thereof, the hydroxyl group located on the fatty acid side chain being etherified by at least one oxyalkylene unit, and from 0 to 10% by weight of an additive package comprising additives with corrosion inhibition action.

Functional fluid composition

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

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.

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

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.

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.

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Haβloch, Germany

Stefan Dambach