Stabilization of chlorinated aliphatic hydrocarbons and use of stabilized composition in cleaning articles
AssigneeImperial Chemical Industries PLC
InventorsDavid Bain, John E. Martin, John H. Saul, Neil Winterton
Life of this patent
Estimating the term…
Abstract
A solvent composition for cleaning metal and other articles which comprises 1,1,1-trichloroethane having dissolved therein a stabilizing amount of a mixture of stabilizing components comprising (i) tertiary butanol (ii) nitromethane and (iii) 1-or 2-nitropropane or nitroethane, in which mixture the specified stabilizing components are present in the mole fraction percent ranges encompassed by Contour K in FIG. 1 of the drawings in the case where component (iii) is 1-or 2-nitropropane or by Contour A in FIG. 2 of the drawing in the case where component (iii) is nitroethane.
Claims13
A mixture of stabilising components for the stabilisation of 1,1,1-trichloroethane, characterised in that the mixture comprises (i) tertiary butanol, (ii) nitromethane and (iii) 1- or 2-nitropropane or nitroethane wherein the mole fractions percent of the stabilising components are within the ranges encompassed by Contour K in FIG. 1 of the drawings or by Contour A in FIG. 2 of the drawings.
A solvent composition comprising 1,1,1-trichloroethane having a stabilising amount of a mixture of stabilising components dissolved therein, characterized in that the mixture of stabilizing components comprises (i) tertiary butanol, (ii) nitromethane and (iii) 1- or 2-nitropropane or nitroethane in which the mole fractions percent of the stabilizing components are within the ranges encompassed by Contour K in FIG. 1 of the accompanying drawings or by Contour A in FIG. 2 of the accompanying drawings.
Dependencies are inferred from the claim text.