Azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane, nitromethane, 1,2-dichloroethylene, and ethanol or isopropanol
AssigneeAllied-Signal Inc.
InventorsHillel Magid, Ian R. Shankland, David P. Wilson, Kane D. Cook, Earl A. E. Lund
Life of this patent
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Abstract
Stable azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane, nitromethane, 1,2-dichloroethylene and an alkanol which are useful in a variety of industrial cleaning applications.
Claims15
Azeotrope-like compositions consisting essentially of from about 62.8 to about 68.4 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.0 to about 3.0 weight percent isopropanol, from about 0.01 to about 1.0 weight percent nitromethane, and from about 30.0 to about 36.0 weight percent trans-1,2-dichloroethylene which boil at about 43.6.degree. C. at 760 mm Hg.
Azeotrope-like compositions consisting essentially of from about 62.8 to about 68.4 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.0 to about 3.0 weight percent isopropanol, from about 0.01 to about 1.0 weight percent nitromethane, and from about 30.0 to about 36.0 weight percent of a mixture of trans-1,2-dichloroethylene and cis-1,2-dichloroethylene wherein said cis-1,2-dichloroethylene is present in an amount of up to about 5 weight percent of said mixture which boil at about 43.6.degree. C. at 760 mm Hg.
Dependencies are inferred from the claim text.