Stabilization of 1,1,1-trichloroethane
AssigneeChemische Werke Huls Aktiengesellschaft
InventorsLeonhardt Magiera, Raban Grundmann, Dieter Krockenberger
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Abstract
Addition of 0.2-2 weight % of 2-methyl-2,3-epoxypropanol-(1), and preferably also 0.2-2% of methyl tert-butyl ether, produces highly stabilized 1,1,1-trichloroethane.
Claims9
Stabilized 1,1,1-trichloroethane containing a stabilizer, the stabilizer consisting essentially of (a) 0.2-2% by weight of the total mixture of 2-methyl-2,3-epoxypropanol-(1);
- (b) 0.2-2% by weight of the total mixture of 2-methyl-2,3-epoxypropanol-(1) and 0.2-2% by weight of the total mixture of methyl tert-butyl ether;
- or (c) a mixture of either (a) or (b) and 0.5-1.5% by weight of the total mixture of nitromethane, 0.5-1.5% by weight of the total mixture of 1,2-epoxybutane or 0.001 to 0.01% by weight of the total mixture of diisopropylamine or N-methyl morpholine.
A method of stabilizing 1,1,1-trichloroethane against decomposition upon contact with metal surfaces and of minimizing the corrosion of metal surfaces caused by contact with 1,1,1-trichloroethane which comprises adding to 1,1,1-trichloroethane a stabilizer consisting essentially of (a) 0.2-2% by weight of the total mixture of 2-methyl-2,3-epoxypropanol-(1);
- (b) 0.2-2% by weight of the total mixture of 2-methyl-2,3-epoxypropanol and 0.2-2% by weight of the total mixture of methyl tert-butyl ether;
- or (c) a mixture of ether (a) or (b) and 0.5-1.5% by weight of the total mixture of nitromethane, 0.5-1.5% by weight of the total mixture of 1,2-epoxybutane or 0.001 to 0.01% by weight of the total mixture of diisopropylamine or N-methyl morpholine.
Stabilized 1,1,1-trichloroethane containing a stabilizer consisting essentially of a stabilizing amount of 2-methyl-2,3-epoxypropanol-(1).
Dependencies are inferred from the claim text.