Compositions – Frost-preventing – ice-thawing – thermostatic – thermophoric,...
Patent
1993-10-21
1995-02-07
Green, Anthony
Compositions
Frost-preventing, ice-thawing, thermostatic, thermophoric,...
106 13, C09K 318
Patent
active
053869680
ABSTRACT:
De-icing compositions, such as used on aircraft wing surfaces, are found to not need thickeners to obtain acceptable holdover times. The compositions are based on an alkylene glycol component (such as propylene glycol, diethylene glycol and mixtures thereof), and obtain particular advantage when a nonionic alkylphenol ethoxylate surfactant is used in conjunction with an alkylaryl sulfonate hydrotrope, as additives. This latter combination of additives gives de-icing compositions with increased holdover times with no degradation of other properties. These compositions exhibit a Newtonian rheology as required for de-icing compositions.
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Ashrawi Samir S.
Coffey David A.
Nieh Edward C.
Bailey James L.
Green Anthony
Mossman David L.
Priem Kenneth R.
Texaco Chemical Inc.
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