IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
UP-0754560
(2007-05-29)
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등록번호 |
US-7658861
(2010-04-02)
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발명자
/ 주소 |
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
22 인용 특허 :
5 |
초록
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A deicing composition comprises a mixture of a deicing agent and a corrosion inhibitor. The corrosion inhibitor comprises an effective amount of a polyhydroxy carboxylic acid, preferably an aldaric or aldonic acid. The salts of aldaric and aldonic acids are much more potent corrosion inhibitors for
A deicing composition comprises a mixture of a deicing agent and a corrosion inhibitor. The corrosion inhibitor comprises an effective amount of a polyhydroxy carboxylic acid, preferably an aldaric or aldonic acid. The salts of aldaric and aldonic acids are much more potent corrosion inhibitors for deicing than agricultural by-products or refined sugars that are today commonly used as corrosion inhibitors, and therefore can be used at lower concentrations to obtain the same effect as a higher concentration of a simple sugar. The deicing composition can be used as a deicer, anti-icer, or a pre-wetting agent. The deicing agent can include a deicing salt such as sodium chloride, magnesium chloride, and/or calcium chloride. Further, a method of making a deicing composition includes mixing a deicing agent and a corrosion inhibitor. The corrosion inhibitor can be dissolved in a liquid, such as brine, which can be sprayed on a solid deicing salt.
대표청구항
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I claim: 1. A deicing composition comprising a mixture of: a deicing agent; and a corrosion inhibitor comprising at least one salt of an aldonic or aldaric acid chosen from salts of D-erythronic acid, D-gulonic acid, L-mannonic acid, and mixtures thereof, wherein the deicing composition is capable
I claim: 1. A deicing composition comprising a mixture of: a deicing agent; and a corrosion inhibitor comprising at least one salt of an aldonic or aldaric acid chosen from salts of D-erythronic acid, D-gulonic acid, L-mannonic acid, and mixtures thereof, wherein the deicing composition is capable of reducing corrosion of mild steel by at least about 70%, as compared to a 3% solution of sodium chloride devoid of the corrosion inhibitor, wherein the corrosion inhibitor is present in an amount ranging from about 1.0% to about 3.0%, and with the proviso that said deicing composition does not comprise molasses solids. 2. The deicing composition of claim 1, wherein the deicing agent is present in an amount ranging from about 20% to about 30% by weight. 3. The deicing composition of claim 1, wherein the deicing agent comprises a liquid deicing agent. 4. The deicing composition of claim 3, wherein the liquid deicing agent comprises a water solution of salts of sodium, magnesium, potassium, calcium, or mixtures thereof. 5. The deicing composition of claim 4, wherein the corrosion inhibitor is capable of reducing the corrosion rate of mild steel in an aqueous solution of 0.153 M sodium chloride by at least about 70% when the corrosion inhibitor is present in the solution at a concentration of 4.0 mM or lower. 6. A method of deicing, comprising mixing a brine of a deicing agent with from about 1.0% to about 3.0% by weight of a corrosion inhibitor comprising at least one salt of an aldonic or aldaric acid, with the proviso that said brine does not contain molasses solids; and applying said brine to a surface, wherein the brine is capable of reducing corrosion of mild steel by at least about 70%. as compared to a 3% solution of sodium chloride devoid of the corrosion inhibitor. 7. The method of claim 6, wherein the brine comprises from about 20% to about 30% by weight the deicing agent. 8. The method of claim 6, further comprising prewetting a solid deicer with the combination of the brine and the corrosion inhibitor. 9. The deicing composition of claim 6, wherein the water solution of salts comprises calcium salts of sodium, magnesium, potassium, calcium, or mixtures thereof. 10. A liquid deicing composition, comprising an aqueous mixture of: from about 20% to about 30% by weight relative to the total weight of the aqueous mixture of a deicing agent; from about 1.5% to about 3.0% by weight relative to the total weight of the aqueous mixture of a corrosion inhibitor comprising at least one salt of an aldonic or aldaric acid; and water, wherein the liquid deicing composition is capable of reducing corrosion of mild steel by at least about 70%, as compared to a 3% solution of sodium chloride devoid of the corrosion inhibitor, with the proviso that said liquid deicing composition does not comprise molasses solids. 11. The deicing composition of claim 10, wherein the deicing agent is present in an amount ranging from about 23% to about 27%. 12. The deicing composition of claim 10, wherein the deicing agent is present in an amount ranging from about 25% to about 26%. 13. The deicing composition of claim 10, wherein the at least one salt of an aldonic or aldaric acid is selected from the group consisting of salts of gluconic acid, D-erythronic acid, D-gulonic acid, saccharic acid, meso-tartaric acid, tartaric acid, L-mannonic acid, and mixtures thereof. 14. The deicing composition of claim 10, wherein the corrosion inhibitor is capable of reducing the corrosion rate of mild steel in an aqueous solution of 0.153 M sodium chloride by at least about 70% when the corrosion inhibitor is present in the solution at a concentration of 4.0 mM or lower.
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