Basf Se Corporation

Harald Dietl

Uwe Nitzschke

Roger Sieg

Bayram Aydin

Gerhard Weiss

Joaquim Henrique Teles

Nicolas Vautravers

Stefan Dambach

Henning Althoefer

Mario Sandor

Ruediger Schmitz

Sebastian Lang

Masayuki Hirosue

Nina Schindler

Uwe Nitzchke

Substantially water-free antifreezes for cooling systems can be used as coolants and antifreezes without further dilution with water.

Antifreeze agents and coolants for fuel cells, storage batteries and batteries

The present invention describes novel coolant concentrates and the production and use thereof.

Solid coolant concentrates and production thereof

Substantially water-free antifreezes and coolants are useful for cooling lithium rechargeable batteries.

Heat transfer liquid for cooling lithium storage batteries

Coolants based on alkylene glycols or derivatives thereof are useful for cooling systems in electric vehicles having fuel cells and/or batteries, preferably for motor vehicles, particularly preferably for passenger cars and commercial vehicles (known as light and heavy duty vehicles). The coolants contain additional corrosion inhibitors for improved corrosion protection in addition to specific azole derivatives.

Coolant for cooling systems in electric vehicles having fuel cells and/or batteries containing azole derivatives and additional corrosion protectants

The present invention relates to coolants for cooling systems in electric vehicles having fuel cells and/or batteries, preferably for motor vehicles, particularly preferably for passenger cars and commercial vehicles (known as light and heavy duty vehicles), based on alkylene glycols or derivatives thereof, which comprise additional corrosion inhibitors for improved corrosion protection in addition to specific azole derivatives.

A process for preparing an anticorrosion component for an antifreeze by oxidizing an oxydiol of the formula (I) with molecular oxygen at a temperature of 20 to 100&#xb0; C. and a partial oxygen pressure of 0.01 to 2 MPa in the presence of water and of a heterogeneous catalyst. The catalyst contains platinum to form an oxydicarboxylic acid of the formula (II) The process has the steps of conducting the oxidation(a) at a molar ratio of0.002&#x2264;(Pt)/[(oxydiol (I))+(oxydicarboxylic acid (II))]&#x2264;0.019;(b) at a concentration of water of 50% to 95% by weight in the liquid phase; and(c) at a pH of 1 to 7.

Process for preparing an anticorrosion component for an antifreeze

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 refers to a vapor space anticorrosive composition comprising corrosion inhibitors, surfactants and possibly thickeners, wherein one surfactant is selected from alkylamine ethoxylates, and being useful as an engine run-in composition and as a coolant.

Vapor space anticorrosive composition

Antifreeze concentrate with corrosion protection which is suitable for coolants and heat transfer fluids and comprises freezing point-lowering liquids and also particular sulfur-comprising organic compounds, inorganic molybdate salts, inorganic phosphate salts and aliphatic, cycloaliphatic or aromatic monocarboxylic, dicarboxylic or tricarboxylic acids as corrosion inhibitors. Aqueous coolant compositions which are suitable for cooling an internal combustion engine whose cooling apparatus has been made of aluminum using a soldering process using a fluoroaluminate flux can be obtained therefrom.

Antifreeze concentrate with corrosion protection and aqueous coolant composition produced therefrom

Corrosion protection formulation comprising (A) from 0.01 to 5% by weight of alkylamine ethoxylates as surfactant component, (B) from 0.01 to 10% by weight of corrosion inhibitors, (C) from 0 to 0.3% by weight of thickeners, (D) from 5 to &#x3c;75% by weight of freezing point-lowering alcohols selected from among alkanols, glycols, polyalkylene glycols and glycerol, (E) from 5 to 90% by weight of vegetable and/or fatty oils, (F) from 0 to 5% by weight of water and (G) from 0 to 5% by weight of conventional emulsifiers. The formulation is particularly suitable for protecting zinc or zinc-plated components or surfaces or cadmium or cadmium-plated metallic surfaces against corrosion caused by runway deicing compositions used at airports.

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Ludwigshafen, Germany

Harald Dietl