Aqueous fluids

The use of a water-soluble hydroxyl di- or tri- carboxylic acid, generally in combination with an alkanolamine in an oil water fluid especially metal working or hydraulic fluids results in a fluid having excellent hard water compatibility, low foaming tendency in soft water and a good biostability;...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LENACK, ALAIN LOUIS PIERRE, KECH, FERNAND JEROME
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The use of a water-soluble hydroxyl di- or tri- carboxylic acid, generally in combination with an alkanolamine in an oil water fluid especially metal working or hydraulic fluids results in a fluid having excellent hard water compatibility, low foaming tendency in soft water and a good biostability; other additives such as emulsifiers, copper passivators and the like are generally present.