C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 1/00 (2006.01) C07C 53/10 (2006.01) C07C 59/01 (2006.01) C07F 3/00 (2006.01) C07K 1/00 (2006.01) C09K 3/18 (2006.01)
Patent
CA 2106138
Improved deicer compositions containing crystalline double salts formed from mixtures of relatively low molecular weight carboxylic acids (for example, mixtures of formic acid and acetic acid) are provided. The deicer compositions are generally prepared by neutralizing an aqueous mixture containing at least two carboxylic acids or salts thereof, adjusting the pH to between about 7 and about 10, and drying the aqueous mixture to obtain a double salt crystalline product. Double salts containing sodium cations and double salts containing sodium cations and at least one cation selected from the group consisting of potassium, calcium, and magnesium provide effective deicing compositions which are environmentally safer than conventional deicing compositions.
ompositions déglaçantes améliorées contenant des sels cristallins doubles formés de mélanges d'acides carboxyliques de masse moléculaire relativement faible (par exemple, mélanges d'acide formique et d'acide acétique). En général, on prépare ces compositions en neutralisant un mélange aqueux contenant au moins deux acides carboxyliques ou sels de ces acides, en ajustant le pH entre environ 7 et environ 10 et en faisant sécher le mélange aqueux pour obtenir un produit cristallin à sels doubles. Des sels doubles contenant des cations sodium et des sels doubles contenant des cations sodium et au moins un cation choisi parmi le groupe potassium, calcium et magnésium offrent des compositions déglaçantes efficaces plus écologiques que les compositions classiques.
Macrae & Co.
State Of South Dakota As Represented By The Department Of Transp
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