Cleaning and liquid contact with solids – Processes – Including application of electrical radiant or wave energy...
Patent
1995-06-05
1997-11-25
Warden, Jill
Cleaning and liquid contact with solids
Processes
Including application of electrical radiant or wave energy...
134 13, 134 31, 134 38, 134 40, 510176, B08B 312, C23G 502
Patent
active
056907478
ABSTRACT:
Liquid solvents having superior cleaning power include at least one polar compound having at least one strongly electronegative oxygen, such as ethylene diacetate, and at least one alicyclic carbonate, such as ethylene carbonate, with or without other additives. The solvents exhibit low toxicity; are nonflammable, pH neutral, essentially nonvolatile, and aprotic; and have other chemical and physical properties that reduce the risk of exposing the user unnecessarily to hazardous conditions. Solvents comprising ethylene carbonate, ethylene diacetate, and, optionally, triethanolamine and/or N-methyl-2-pyrrolidone are superior cleaners for a wide range of residues and are environmentally and physiologically safe.
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Chaudhry Saeed
Hammar John C.
The Boeing Company
Warden Jill
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