C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 3/18 (2006.01) C23F 11/08 (2006.01) C23F 15/00 (2006.01)
Patent
CA 2165759
Salt-based deicing compositions which are highly effective as deicers and which have significantly reduced corrosive effects are provided. One deicing composition comprises a deicing salt as the major component and an inhibitor system comprising either a water-soluble rare earth salt or a water-soluble organic acid salt selected from the group consisting of gluconate salts, ascorbate salts, tartrate salts, and saccharate salts. A more preferred deicing composition comprises a deicing salt as the major component and an inhibitor system comprising a mixture of a water-soluble rare earth salt and a water-soluble organic acid salt selected from the group consisting of gluconate salts, ascorbate salts, tartrate salts, and saccharate salts. The deicing salts include sodium chloride and mixtures of sodium chloride and up to 25 weight percent magnesium chloride or calcium chloride. The preferred deicing salt is sodium chloride. Generally, the preferred water soluble rare earth salt is a lanthanum salt or mixture of rare earth salts containing lanthanum salts. The preferred water-soluble organic acid salt is a gluconate salt.
Cargill Incorporated
Macrae & Co.
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