A novel deicing composition

Details A novel deicing composition A novel deicing composition

C - Chemistry, Metallurgy

09

K

C09K 3/18 (2006.01)

Patent

CA 2420808

The present invention provides a simpler, readily-prepared, and non corrosive deicing composition with very low environmental impact, especially for airport runways, highways and roads, which comprises a solid mixture of a) from 97.30 to 97.70 % by weight alkali metal salt of formic acid and b) from 2.30 to 2.70% by weight an alkali metal silicate as the corrosion inhibitor. This effective deicer which is employed in solid form (powder, granules and the like), ensures the compliance with AMS1431 B at the same time it is environmentally friendly with its low BOD and COD.

L'invention se rapporte à une composition de dégivrage plus simple, facilement préparée et non corrosive, et à très faible incidence sur l'environnement, notamment utilisée sur les pistes d'aéroport, les autoroutes et les routes. Cette composition comprend un mélange solide de a) de 97,30 à 97,70 % en poids d'un sel métallique alcalin d'acide formique, et b) de 2,30 à 2,70 % en poids d'un silicate métallique alcalin en tant qu'inhibiteur de corrosion. Cette composition de dégivrage efficace employée sous une forme solide (poudre, granules et autres similaires) est en conformité avec AMS1431 tout en protégeant l'environnement du fait de sa faible teneur en BOD et COD.

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