Nonflammable compositions comprising fluorinated compounds and use of these compositions
AssigneeSolvay Fluor GmbH
InventorsMichael Marhold, Helge Rau, Karsten Borner, Christoph Meurer
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Abstract
Nonflammable compositions comprising fluorinated compounds selected from the group consisting of hydrofluoroalkanes, hydrofluoroalkenes, partially or perfluorinated aromatic compounds, hydrofluoroethers, and fluoroketones; 1,2-dichloroethylene, especially trans-1,2-dichloroethylene; and a stabilizer. These non-flammable compositions which preferably contain 1,1,1,3,3-pentafluorobutane, can be used especially as solvents for cleaning and defluxing electronic components and for degreasing metals. The compositions further may comprise a propellant, e.g. 1,1,1,2-tetrafluoroethane. These compositions are especially suitable as flushing agent.
Claims21
A nonflammable composition consisting of:
- (a) one fluorinated compound being a hydrofluoroalkene;
- (b) 1,2-dichloroethylene;
- (c) an effective amount of a stabilizer of said fluorinated compound or said 1,2-dichloroethylene;
- and
- optionally, a propellant;
- wherein the stabilizer is selected from the group consisting of epoxides, unsaturated hydrocarbons, nitroalkanes, diketones, and brominated compounds.
A nonflammable composition, comprising
- (a) a fluorinated compound, wherein said fluorinated compound is 1,1,1,3,3-pentafluorobutane;
- (b) 1,2-dichloroethylene;
- and
- (c) an effective amount of a stabilizer of the fluorinated compound or the 1,2-dichloroethylene, wherein the stabilizer is a flammable compound, and wherein the effective amount of said stabilizer is from 0.05% to 1% by weight relative to the total weight of the composition.
Dependencies are inferred from the claim text.