Methylchloroform stabilizer composition employing an alkynyl sulfide
AssigneeThe Dow Chemical Company
InventorsNobuyuki Ishibe, Thomas G. Metcalf
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Abstract
An alkyl alkynyl sulfide can be employed to stabilizer methylchloroform against reaction with the common metals of construction. Stabilization is enhanced by combining with other known stabilizers. Nitroalkanes, alkyl nitrates or alkynols may be employed to eliminate the need of dioxane and alkylene oxides, while the use of the alkyl nitrates or alkynols eliminates the need for a nitroalkane in the stabilizer formulation.
Claims9
A stabilized methylchloroform composition consisting essentially of methylchloroform and an alkyl 2-propynyl sulfide, wherein the alkyl group contains from 1-3 carbon atoms and the alkyl 2-propynyl sulfide is present in a concentration of from about 2 to about 8 volume percent.
A method of stabilizing methylchloroform against attack by metals in contact therewith consisting essentially of blending with said methylchloroform as the stabilizer a lower alkyl-2-propynyl sulfide, prior to placing said metals in contact with said methylchloroform.
Dependencies are inferred from the claim text.