Cleaning solvent blends of low global warming potential exhibiting azeotrope-like behavior and their use
OwnerVenesia Hurtubiseinventor
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Abstract
Cleaning solvent compositions comprising, consisting essentially of, or consisting solely of, trans-dichloroethylene, 1-chloro-2,3,3-trifluoropropene and 1,1,2,2,3,3,4-heptafluorocyclopentane, and, optionally, one or both of surfactants and cosolvents, have utility as non-flammable, low-global warming potential, azeotrope-like cleaning fluids and carrier fluids for lubricants and the like. A method for cleaning articles of soiling substances comprises contacting the articles with the solvent composition by any suitable means such as a spray delivered by a propellant gas, or by contact with liquid and/or vapor solvent compositions, as in a conventional vapor degreaser apparatus, and removing the composition from the articles.
Claims16
A solvent composition having azeotrope-like properties and consisting essentially of at least about 70 weight percent trans-dichloroethylene, at least about 1 weight percent 1,1,2,2,3,3,4-heptafluorocyclopentane, at least about 0.5 weight percent of 1-chloro-2,3,3-trifluoropropene, and, optionally, one or both of a surfactant and a cosolvent.
Dependencies are inferred from the claim text.