Compositions containing trans-1,2-dichloroethylene and a hydrofluoroether, and methods of using the same
AssigneeShellef Holdings Inc.
InventorsDov Shellef, Edo Shellef
Life of this patent
Estimating the term…
Abstract
Disclosed herein are solvent compositions and methods of using the solvent compositions. The solvent composition includes at least trans-1,2-dichloroethylene (t-DCE) and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TFE-TFPE). The solvent composition may also include an oxygenated solvent, such as an alcohol or fluorinated ether. A method of cleaning the surface of an article includes contacting the surface with the solvent composition to dissolve, disperse, or displace a contaminant on the surface, and removing the solvent composition containing the contaminant from the surface.
Claims19
A solvent composition comprising:
- trans-1,2-dichloroethylene (t-DCE) in an amount in a range of from 85 to 99.5 wt. %;
- and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TFE-TFPE) in an amount in a range of from 0.1 to 15 wt. %,
- wherein the t-DCE and TFE-TFPE are present in amounts sufficient to form a binary azeotrope or azeotrope-like composition.
A solvent composition comprising:
- 65 to 98 wt. % of trans-1,2-dichloroethylene (t-DCE);
- 0.1 to 30 wt. % of 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TFE-TFPE);
- and
- 0.1 to 15 wt. % of an oxygenated solvent selected from the group consisting of at least one of methanol, ethanol, isopropanol, t-butanol, 1-propanol, 2-butanol, methylperfluoroheptene ether (MPHE), and 3-methoxyperfluoro(2-methylpentane), wherein the t-DCE, TFE-TFPE, and the oxygenated solvent are present in amounts sufficient to form a ternary azeotrope or azeotrope-like composition.
A solvent composition comprising:
- 65 to 98 wt. % of trans-1,2-dichloroethylene (t-DCE);
- 0.1 to 30 wt. % of 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TFE-TFPE);
- and
- 0.1 to 15 wt. % of methylperfluoroheptene ether (MPHE) and 3-methoxyperfluoro(2-methylpentane),
- wherein:
- the t-DCE, TFE-TFPE, MPHE, and 3-methoxyperfluoro(2-methylpentane) are present in the composition in relative azeotrope or azeotrope-like amounts.
Dependencies are inferred from the claim text.