N-acylsarcosine compositions

Details N-acylsarcosine compositions N-acylsarcosine compositions

C - Chemistry, Metallurgy

10

M

C10M 141/06 (2006.01)

Patent

CA 2750491

The invention relates to a composition for use as a metal working fluid, which comprises A) An additive mixture that essentially consists of a N-Acylsarcosine and a naphthenic acid or a salt thereof, polyalkylene or propylene glycol and further additives; and B) A functional fluid. The composition is useful in a process for protection against corrosion or oxidative degradation of zinc, aluminum or alloys thereof, or zinc-coated steels, wherein zinc, aluminum or alloys thereof are exposed to the composition.

La présente invention porte sur une composition destinée à être utilisée comme fluide de travail des métaux, laquelle comprend A) un mélange d'additifs qui est essentiellement constitué d'une N-acylsarcosine et d'un acide naphténique ou d'un sel de celui-ci, d'un polyalkylène ou de propylèneglycol et d'autres additifs; et B) un fluide fonctionnel. La composition est utile dans un procédé de protection contre la corrosion ou la dégradation par oxydation de zinc, d'aluminium ou d'alliages de ceux-ci, ou d'aciers galvanisés, où le zinc, l'aluminium ou les alliages de ceux-ci sont exposés à la composition.

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