Azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane, 1,2-dichloroethylene and hexane
AssigneeAllied-Signal Inc.
InventorsHillel Magid, David P. Wilson, Earl A. E. Lund
Life of this patent
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Abstract
Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane, 1,2-dichloroethylene and hexane. These mixtures are useful in a variety of vapor degreasing applications and as solvents in a variety of industrial cleaning applications including defluxing of printed circuit boards.
Claims21
Azeotrope-like compositions consisting essentially of from about 61.7 to about 71.0 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 5.1 to about 6.1 weight percent methanol, from about 0.05 to about 0.6 weight percent nitromethane, from about 24.0 to about 30.0 weight percent 1,2-dichloroethylene, and from about 0.5 to about 4.0 weight percent hexane which boil at about 38.3.degree. C. at 760 mm Hg.
Dependencies are inferred from the claim text.