IP Library › Granted Patent US 6,872,327
Granted Patent B2
US 6,872,327 · App. 10/474,665 · Granted Mar 29, 2005

Defrosting agent and method for melting snow and ice

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Quick Facts
Patent No.
US 6,872,327
App. No.
10/474,665
Granted
Mar 29, 2005
Kind
B2
Abstract

The present invention relates to a method of melting snow and/or ice on traffic areas by applying to the traffic area a deicing composition comprising an aqueous solution of alkali metal carboxylate, a surfactant, a defoamer, and a corrosion inhibitor.

Claims (18)

1. A deicing composition containing constituents:

a) from 51 to 70% by weight of an alkali metal formate,

b) from 0.001 to 1% by weight of an alkyl(poly)glycoside,

c) from 0.0001 to 1% by weight of a defoamer,

d) from 0.001 to 1% by weight of a corrosion inhibitor and water to 100% by weight.

2. The deicing composition as claimed in claim 1 , wherein constituent a) is between 52 and 60% by weight.

3. The deicing composition as claimed in claim 1 , wherein constituent a) is between 54 and 56% by weight.

4. The deicing composition as claimed in claim 1 , wherein constituent a) is potassium formate.

5. The deicing composition of claim 1 , wherein constituent b) is between 0.01 to 0.5% by weight.

6. The deicing composition of claim 1 , wherein constituent c) is between 0.0002 to 0.1% by weight.

7. The deicing composition of claim 1 , wherein constituent d) is between 0.01 to 0.7% by weight.

8. The deicing composition of claim 1 , wherein constituent d) is selected from the group consisting of an alkali metal phosphate, alkali metal borate, alkali metal silicate, and mixtures thereof.

9. A method of melting snow and ice on traffic areas by applying to said traffic areas from 5 to 100 g/m2 of the deicing composition of claim 1 .

10. A deicing composition containing constituents:

a) from 51 to 70% by weight of an alkali metal carboxylate,

b) from 0.001 to 1% by weight of an alkyl (poly)glycoside,

c) from 0.0001 to 1% by weight of a defoamer,

d) from 0.001 to 1% by weight of a corrosion inhibitor and water to 100% by weight, wherein constituent c) is a polysiloxane.