Patent US5433880A successfully refreshed from Google Patents.
US5433880A
Expired / Lapsed
US
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Refrigerant compositions which include a sulfur compound
Assignee: EIDP Inc
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Filing: 1994-03-30
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Granted: 1995-07-18
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Expires: 2014-03-30
Abstract
Abstract Refrigerant compositions are disclosed which include a first component of bis(trifluoromethyl)sulfide, difluoromethyl(trifluoromethyl)sulfide, pentafluoroethyl sulfur pentafluoride, difluoromethyl sulfur pentafluoride, trifluoromethylsulfur pentafluoride bis(pentafluoroethyl)sulfide and a second component of difluoromethane, 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane, 1,1,2-trifluoroethane, 1,1-difluoroethane, fluoroethane, dimethyl ether, ammonia, fluoromethyl trifluoromethyl ether, trifluoromethyl methyl ether, 1,1,1,2,2-pentafluoropropane, 2-fluoropropane, cyclopropane, bis(difluoromethyl)ether, 1,1,2,2-tetrafluoropropane, 1,1,1,2-tetrafluoropropane, 1-fluoropropane, 1,1,1,3,3-pentafluoropropane, 1,2,2-trifluoropropane, 2,2-difluoropropane, 1,2-difluoropropane, 1,1-difluoropropane, 1-trifluoromethoxy-2,2,2-trifluoroethane, tris(trifluoromethyl)amine or 1,1,2,2,3-pentafluoropropane.
Inventors
- 👤 Barbara H. Minor
- 👤 Glenn S. Shealy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:26
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/149; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C08J2203/00; C08J2203/14; C08J2203/142; C08J2203/146; C09K2205/00; C09K2205/10; C09K2205/11; C09K2205/112; C09K2205/132; C09K2205/134; C09K2205/22; Y; Y10; Y10S; Y10S264/00; Y10S264/05
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
65 words
An azeotropic or azeotrope-like composition consisting essentially of 1-77 weight percent bis(pentafluoroethyl)sulfide and 23-99 weight percent 1,1,2,2,3-pentafluoropropane, said composition having a vapor pressure of from about 14 to about 17 psia when the temperature is adjusted to about 25° C., and wherein when about 50 weight percent of the composition is evaporated at about 25° C., the vapor pressure changes less than about 10 percent.
Claim 2
Dependent Claim
65 words
An azeotropic or azeotrope-like composition consisting essentially of 1-77 weight percent bis(pentafluoroethyl)sulfide and 23-99 weight percent 1,1,2,2,3-pentafluoropropane, said composition having a vapor pressure of from about 14 to about 17 psia when the temperature is adjusted to about 25° C., and wherein when about 50 weight percent of the composition is evaporated at about 25° C., the vapor pressure changes less than about 10 percent.
Claim 3
Dependent Claim
57 words
A composition consisting essentially of greater than 0 to about 80 liquid mole percent bis(pentafluoroethyl)sulfide and about 20 to less than 100 liquid mole percent 1,1,2,2,3-pentafluoropropane wherein the vapor pressure of the composition is higher than the vapor pressure of bis(pentafluoroethyl)sulfide and 1,1,2,2,3-pentafluoropropane at about 20° C., when the temperature has been adjusted to about 20° C.
Claim 4
Dependent Claim
57 words
A composition consisting essentially of greater than 0 to about 80 liquid mole percent bis(pentafluoroethyl)sulfide and about 20 to less than 100 liquid mole percent 1,1,2,2,3-pentafluoropropane wherein the vapor pressure of the composition is higher than the vapor pressure of bis(pentafluoroethyl)sulfide and 1,1,2,2,3-pentafluoropropane at about 20° C., when the temperature has been adjusted to about 20° C.
Claim 5
Dependent Claim
26 words
A process for producing refrigeration, comprising condensing a composition of claim 1 and thereafter evaporating said composition in the vicinity of the body to be cooled.
Claim 6
Dependent Claim
28 words
A process for producing heat comprising condensing a composition of any of claim 1 in the vicinity of a body to be heated, and thereafter evaporating said composition.
Claim 7
Dependent Claim
26 words
A process for producing refrigeration, comprising condensing a composition of claim 2 and thereafter evaporating said composition in the vicinity of the body to be cooled.
Claim 8
Dependent Claim
28 words
A process for producing heat comprising condensing a composition of any of claim 2 in the vicinity of a body to be heated, and thereafter evaporating said composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-07-17 | 1999-01-16 | 1999-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-17 | 2003-01-16 | 2003-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-17 | 2007-01-16 | 2007-07-18 | $7700.00 | Window Closed / Lapsed |