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US 6,423,673 B1Granted
Azeotrope-like compositions and their use
Assignee3M Innovation Properties Company
InventorsJohn G. Owens, Dean S. Milbrath
Life of this patent
Estimating the term…
Abstract
The invention provides azeotrope-like compositions consisting essentially of 1,1,1,3,3-pentafluorobutane and a fluorinated ketone, RfC(O)CF(CF3)2, where Rf is CF3CF2, CF3CF2CF2, or (CF3)2CF.
Claims11
An azeotrope-like composition comprising:
- (a) 1,1,1,3,3-pentafluorobutane;
- and
- (b) fluorinated ketone;
- wherein said composition is selected from the group consisting of:
- (i) compositions consisting essentially of about 12.5 to about 99.0 weight percent of 1,1,1,3,3-pentafluorobutane and about 1.0 to about 87.5 weight percent of C2F5C(O)CF(CF3)2 that boil below about 40° C. at about 760 torr;
- (ii) compositions consisting essentially of about 61.0 to about 99.0 weight percent of 1,1,1,3,3-pentafluorobutane and about 1.0 to about 39.0 weight percent of (CF3)2CFC(O)CF(CF3)2 that boil below about 40° C. at about 760 torr;
- and
- (iii) compositions consisting essentially of about 73.5 to about 99.0 weight percent of 1,1,1,3,3-pentafluorobutane and about 1.0 to about 26.5 weight percent of CF3CF2CF2C(O)CF(CF3)2 that boil below about 40° C. at about 760 torr.
5 more elements
An azeotrope-like composition comprising:
- (a) 1,1,1,3,3-pentafluorobutane;
- and
- (b) fluorinated ketone;
- wherein said composition is selected from the group consisting of:
- (i) compositions consisting essentially of about 12.5 to about 95.0 weight percent of 1,1,1,3,3-pentafluorobutane and about 5.0 to about 87.5 weight percent of C2F5C(O)CF(CF3)2 that boil below about 40° C. at about 760 torr;
- (ii) compositions consisting essentially of about 61.0 to about 95.0 weight percent of 1,1,1,3,3-pentafluorobutane and about 5.0 to about 39.0 weight percent of (CF3)2CFC(O)CF(CF3)2 that boil below about 40° C. at about 760 torr;
- and
- (iii) compositions consisting essentially of about 73.5 to about 95.0 weight percent of 1,1,1,3,3-pentafluorobutane and about 5.0 to about 26.5 weight percent of CF3CF2CF2C(O)CF(CF3)2 that boil below about 40° C. at about 760 torr;
- wherein said composition has no closed-cup flash point.
6 more elements
An azeotrope composition consisting essentially of:
- (a) 1,1,1,3,3-pentafluorobutane;
- and
- (b) fluorinated ketone;
- wherein said composition is selected from the group consisting of:
- (i) compositions consisting essentially of about 48.3 weight percent of 1,1,1,3,3-pentafluorobutane and about 51.7 weight percent of C2F5C(O)CF(CF3)2 that boil at about 35.4° C. at about 760 torr;
- (ii) compositions consisting essentially of about 79.0 weight percent of 1,1,1,3,3-pentafluorobutane and about 21.0 weight percent of (CF3)2CFC(O)CF(CF3)2 that boil at about 39.6° C. at about 760 torr;
- and
- (iii) compositions consisting essentially of about 86.7 weight percent of 1,1,1,3,3-pentafluorobutane and about 13.3 weight percent of CF3CF2CF2C(O)CF(CF3)2 that boil at about 39.9 at about 760 torr.
5 more elements
Dependencies are inferred from the claim text.