Cooling composition for use with magnesium materials

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 5/00 (2006.01) C09K 5/20 (2006.01) C23F 11/10 (2006.01) C23F 11/12 (2006.01) C23F 11/14 (2006.01) C23F 11/167 (2006.01)

Patent

CA 2307621

The invention relates to a cooling liquid referring to the total composition comprised of a) 0.005 to 0.5 wt. % tolyltriazole, b) 0.005 to 0.5 wt. % benzotriazole, c) 0.005 to 10 wt. % of one or more corrosion inhibitors selected from branched aliphatic carboxylic acid with 6 to 11 C-atoms and from alkanolamine phosphates, d) 70 to 99.985 wt. % of a water soluble liquid alcohol with a boiling point above 100 ~C at normal pressure and water, alkalis and/or additional active substances as a remainder to total 100 wt. %. The inventive cooling liquid is utilized for cooling components made of magnesium and or magnesium alloys.

L'invention concerne l'utilisation d'un liquide de refroidissement contenant, par rapport à la composition totale, a) 0,005 à 0,5 % en poids de tolyltriazole, b) 0,005 à 0,5 % en poids de benzotriazole, c) 0,005 à 10 % en poids d'un ou de plusieurs inhibiteurs de corrosion choisis parmi des acides carboxyliques aliphatiques ramifiés possédant 6 à 11 atomes de C et parmi des phosphates d'alcanolamine, d) 70 à 99,985 % en poids d'un alcool liquide hydrosoluble présentant un point d'ébullition à pression atmosphérique standardisée supérieur à 100 ·C, et comme solde pour totaliser 100 % en poids, de l'eau, des alcalis et/ou d'autres substances actives, pour le refroidissement de pièces en magnésium et/ou en alliages de magnésium.

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