Environmentally safe snow and ice dissolving liquid

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 3/18 (2006.01) E01H 5/00 (2006.01) E01H 13/00 (2006.01)

Patent

CA 2240128

The invention concerns a snow and ice dissolving liquid, as de-icing and anti- skid agent first of all for public roads, railway switches and airport runways based on liquid nitrogen fertilizer components, i.e. water, urea and ammonium nitrate. The liquid contains the said components in a mass ratio varying in (4,5 - 5,5):(3,6 - 4,4):(6,3 - 7,7) range; besides, 1,5 - 2,0 mass per cent benzoic acid and/or 0,10 - 0,25 mass per cent benzo or tolyl triazol as corrosion inhibitor additives.

Cette invention concerne un liquide dissolvant la neige et la glace, lequel peut être utilisé en qualité d'agent de dégivrage et antidérapant pour les voies publiques tout d'abord, ainsi que pour des aiguillages ferroviaires ou des pistes d'aéroports. Ce liquide est à base de composants d'engrais liquides azotés, c'est à dire d'eau, d'urée et de nitrate d'ammonium. Le liquide comprend lesdits composants dans une proportion en poids variant dans la plage suivante (4,5-5,5): (3,6-4,4): (6,3-7,7). Le liquide peut en outre contenir de 1,5 à 2,0 % en poids d'acide benzoïque et/ou de 0,10 à 0,25 % en poids de benzo- ou tolyl triazol en qualité d'additifs anticorrosion.

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