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US 4,404,412 AGranted
Trichloroethylene composition stabilized against oxidation
AssigneeThe Dow Chemical Company
InventorsNobuyuki Ishibe, Jimmie K. Harden
Life of this patent
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Abstract
Trichloroethylene is stabilized against oxidation by adding a nitrogen-containing compound selected from among .alpha.-(dimethylamino) propionitrile, thiazole, 1-aza-2-alkoxy-1-cycloalkene and 1,5-diazabicyclo[5.4.0]undec-5-ene. These may be used in combination with ethyl acetate, acetonitrile and pyrazine.
Claims4
A stable chlorinated solvent useful in degreasing operations which comprises trichloroethylene and a minor amount of a stabilizer which is an antioxidant consisting of .alpha., 1,5-diazabicyclo-[5.4.0]undec-5-ene.
Dependencies are inferred from the claim text.