Stabilized methylchloroform composition
AssigneeThe Dow Chemical Company
InventorAlvetta Pryor
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Abstract
A nitroalkane-free inhibitor system for methylchloroform has been formulated which contains dioxane, an alkylene oxide, and 3-butyn-1-ol. The stabilizer amounts to about 4 to 6% by volume of the stabilized methylchloroform composition. The stabilized composition is useful in vapor degreasing applications when it additionally contains an alkyl nitrate.
Claims3
A stabilizer composition for 1,1,1-trichloroethane wherein the stabilizer consists essentially of 1.5 to 4 vol. % dioxane, 0.75 to 2 vol. % butylene oxide and 0.1 to 1.0 vol. % 3-butyn-1-ol based on the total volume of stabilizer and trichloroethane.
A stabilized 1,1,1-trichloroethane solvent employed in a vapor degreasing process which consists essentially of 2.0 to 3.0% dioxane, 0.75% butylene oxide, 0.5% 3-butyn-1-ol, 1.5% of ethyl or isopropyl nitrate and the remainder trichloroethane all based on the total volume of solvent plus inhibitors.
Dependencies are inferred from the claim text.