US5578137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azeotropic or azeotrope-like compositions including 1,1,1,2,3,4,4,5,5,5-decafluoropentane
Assignee: EIDP Inc
•
Filing: 1994-05-19
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Granted: 1996-11-26
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Expires: 2014-05-19
Abstract
Abstract Compositions of 1,1,1,2,3,4,4,5,5,5-decafluoropentane, bis(fluoromethyl) ether, 2,2,4,4-tetrafluorooxetane, 2,2,3,3-tetrafluorooxetane, 1,1,1,2-tetrafluoro-2-(fluoromethoxy)ethane, 1-(difluoromethoxy)-1,2,2-trifluoroethane, 1-(difluoromethoxy)-1,1,2-trifluoroethane, acetone, cyclopentane, ethyl acetate, ethyl formate, methyl tert-butyl ether, methyl acetate, methyl formate, propylene oxide, 2,2-dimethylbutane, n-pentane or n-propanol are useful as cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, refrigerants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.
Inventors
- 👤 Glenn S. Shealy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:24
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08J9/149; C09; C09K; C09K3/00; C09K3/30; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C08J2203/00; C08J2203/12; C08J2203/14; C08J2203/146; C09K2205/00; C09K2205/10; C09K2205/102; C09K2205/104; C09K2205/108; C09K2205/11; C09K2205/112; C09K2205/12; C09K2205/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
44 words
An azeotropic or azeotrope-like composition consisting essentially of about 1-99 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane and about 99-1 weight percent methyl tert-butyl ether wherein at about 25 C, the vapor pressure of the composition changes by less than 10% after 50% of the composition has evaporated.
Claim 2
Dependent Claim
44 words
An azeotropic or azeotrope-like composition consisting essentially of about 1-99 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane and about 99-1 weight percent methyl tert-butyl ether wherein at about 25 C, the vapor pressure of the composition changes by less than 10% after 50% of the composition has evaporated.
Claim 3
Dependent Claim
47 words
The azeotropic or azeotrope-like composition of claim 1 consisting essentially of about 40-99 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane and about 1-60 weight percent methyl tert-butyl ether wherein at about 25° C., the vapor pressure of the composition changes by less than 10% after 50% of the composition has evaporated.
Claim 4
Dependent Claim
28 words
A process for producing refrigeration, comprising condensing a composition of claim 1 or 2, and thereafter evaporating said composition in the vicinity of the body to be cooled.
Claim 5
Dependent Claim
28 words
A process for producing heat comprising condensing a composition of claim 1 or 2 in the vicinity of a body to be heated, and thereafter evaporating said composition.
Claim 6
Dependent Claim
20 words
A process for cleaning a solid surface which comprises treating said surface with a composition of claim 1 or 2.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-11-26 | 2000-05-27 | 2000-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-26 | 2004-05-27 | 2004-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-26 | 2008-05-27 | 2008-11-26 | $7700.00 | Window Closed / Lapsed |