Patent ID: 7629307
Filing Date: 2009-12-08
Classification: C09K,C10M,C10N,C11D,C23G,H01L,Y02C,Y02P

Abstract:
1. An azeotrope-like composition comprising a blend of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, trans-1,2-dichloroethylene, and a third component, wherein the composition is selected from: (i) a blend consisting essentially of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, trans-1,2-dichloroethylene and methanol, when fractionally distilled, forms a distillate fraction that is an azeotrope consisting essentially of about 52.9 weight percent of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, 41.6 weight percent of trans-1,2-dichloroethylene and 5.5 weight percent of methanol that boils about 37.9° C. at 734 torr; or (ii) a blend consisting essentially of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, trans-1,2-dichloroethylene and ethanol, when fractionally distilled, forms a distillate fraction that is an azeotrope consisting essentially of about 50.9 weight percent of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, 46.5 weight percent of trans-1,2-dichloroethylene and 2.6 weight percent of ethanol that boils about 40.7° C. at 733 torr; or (iii) a blend consisting essentially of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, trans-1,2-dichloroethylene and isopropanol when fractionally distilled, forms a distillate fraction that is an azeotrope consisting essentially of about 50.5 weight percent of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, 48.2 weight percent of trans-1,2-dichloroethylene and 1.3 weight percent of isopropanol that boils about 41.5° C. at 731 torr; or (iv) a blend consisting essentially of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, trans-1,2-dichloroethylene and trifluoroethanol when fractionally distilled, forms a distillate fraction that is an azeotrope consisting essentially of about 44.6 weight percent of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, 44.7 weight percent of trans-1,2-dichloroethylene and 10.7 weight percent of trifluoroethanol that boils about 40.6° C. at 735 torr; or (v) a blend consisting essentially of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, trans-1,2-dichloroethylene and pentafluoropropanol when fractionally distilled, forms a distillate fraction that is an azeotrope consisting essentially of 44.2 weight percent of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, 53.1 weight percent of trans-1,2-dichloroethylene and 2.7 weight percent of pentafluoropropanol that boils about 42.1° C. at 734 torr.