Deicing and anti-icing composition for aircraft
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United States of America Patent
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-
Oct 6, 1998
Grant Date -
N/A
app pub date -
Apr 16, 1997
filing date -
Apr 16, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A deicing and anti-icing composition for aircraft surfaces including a base compound being propylene glycol and/or ethylene glycol in the range of 35.0% to 80.0% by weight of the deicing and anti-icing composition. A diluent is included in the form of water for use as a carrier fluid for the glycol. A first molecular weight non-ionic surfactant agent is included having an HLB in the range of 4 to 17, and a second molecular weight non-ionic surfactant agent is included having an HLB in the range of 5 to 18. The second non-ionic surfactant agent has an HLB at least two (2) units higher than the first non-ionic surfactant agent. An emulsifier is included in the form of a polycarboxylate compound being in the range of 1 ppm to 0.5% by weight of the deicing and anti-icing composition. A pH control agent maintains the pH of the deicing and anti-icing composition between a 6 and 10 value.
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