US5484546A
Expired / Lapsed
US
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Refrigerant compositions including an acylic fluoroether
Assignee: EIDP Inc
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Filing: 1994-05-13
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Granted: 1996-01-16
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Expires: 2014-05-13
Abstract
Abstract Refrigerant compositions include mixtures of hexafluorodimethyl ether and cyclopropane, dimethylether or propylene; bis(difluoromethyl) ether and 2,2,3,4,4-pentafluorooxetane; fluoromethyl trifluoromethyl ether and 2,2,4,4,5,5-hexafluoro-1,3-dioxolane, 1-trifluoromethoxy-1,2,2,2-tetrafluoroethane, dimethylether or tris(trifluoromethyl)amine; trifluoromethyl methyl ether and perfluorooxetane, 2,2,4,4,5,5-hexafluoro-1,3-dioxolane, perfluoromethyl ethyl ether, perfluorodinethoxymethane, 1-trifluoromethoxy-1,2,2,2-tetrafluoroethane, dimethylether or tris(trifluoromethyl)amine; perfluoromethyl ethyl ether and dimethylether, propylene or 1-trifluoromethoxy-1,2,2,2-tetrafluoroethane; perfluorodirnethoxymethane and dimethylether or isobutane; 1-trifluoromethoxy-1,1,2,2-tetrafluoroethane and tris(trifluoromethyl)amine or dimethylether; difluoromethoxy pentafluoroethane and dimethylether, isobutane or tris(trifluoromethyl)amine; 1-trifluoromethoxy-1,2,2,2-tetrafluoroethane and dimethylether or isobutane; 1-difluoromethoxy-1,1,2,2-tetrafluoroethane and N(CHF 2 ) 2 (CF 3 ); or 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)propane and 1,1,2,2,3-pentafluoropropane or 1,1,1,2,3-pentafluoropropane.
Inventors
- 👤 Barbara H. Minor
- 👤 Tuneen E. C. Chisolm
- 👤 Glenn S. Shealy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:48
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/30; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/149; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C08J2203/00; C08J2203/12; C08J2203/14; C08J2203/146; C09K2205/00; C09K2205/10; C09K2205/11; C09K2205/112; C09K2205/116; C09K2205/12; C09K2205/132; C09K2205/22; Y; Y10; Y10S; Y10S264/00; Y10S264/05
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
40 words
An azeotropic or azeotrope-like composition consisting essentially of about 1 to about 60 weight percent 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)propane and about 40 to about 99 weight percent of 1,1,2,2,3-pentafluoropropane wherein said composition has a vapor pressure of about 15 psia at 25° C.
Claim 2
Dependent Claim
40 words
An azeotropic or azeotrope-like composition consisting essentially of about 1 to about 60 weight percent 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)propane and about 40 to about 99 weight percent of 1,1,2,2,3-pentafluoropropane wherein said composition has a vapor pressure of about 15 psia at 25° C.
Claim 3
Dependent Claim
40 words
An azeotropic or azeotrope-like composition consisting essentially of about 1 to about 30 weight percent 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)propane and about 70 to about 99 weight percent of 1,1,1,2,3-pentafluoropropane wherein said composition has a vapor pressure of about 16.4 psia at 25° C.
Claim 4
Dependent Claim
40 words
An azeotropic or azeotrope-like composition consisting essentially of about 1 to about 30 weight percent 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)propane and about 70 to about 99 weight percent of 1,1,1,2,3-pentafluoropropane wherein said composition has a vapor pressure of about 16.4 psia at 25° C.
Claim 5
Dependent Claim
34 words
An azeotropic or azeotrope-like composition consisting essentially of 98-99 weight percent 1,1,1,2,2,3,3-heptafluoro-3(1,2,2,2-tetrafluoroethoxy)propane and 1-2 weight percent of 1,1,1,2,3-pentafluoropropane wherein said composition has a vapor pressure of about 8.5 to 9 psia at 25° C.
Claim 6
Dependent Claim
34 words
An azeotropic or azeotrope-like composition consisting essentially of 98-99 weight percent 1,1,1,2,2,3,3-heptafluoro-3(1,2,2,2-tetrafluoroethoxy)propane and 1-2 weight percent of 1,1,1,2,3-pentafluoropropane wherein said composition has a vapor pressure of about 8.5 to 9 psia at 25° C.
Claim 7
Dependent Claim
45 words
A binary composition consisting essentially of component (a) about 1 to about 25 mole percent 1,1,1,2,2,3,3-heptafluoro-3(1,2,2,2-tetrafluoroethoxy)propane and component (b) about 75 to about 99 mole percent of 1,1,2,2,3-pentafluoropropane wherein at 19.05° C. said binary composition has a vapor pressure higher than component (a) or (b).
Claim 8
Dependent Claim
45 words
A binary composition consisting essentially of component (a) about 1 to about 25 mole percent 1,1,1,2,2,3,3-heptafluoro-3(1,2,2,2-tetrafluoroethoxy)propane and component (b) about 75 to about 99 mole percent of 1,1,2,2,3-pentafluoropropane wherein at 19.05° C. said binary composition has a vapor pressure higher than component (a) or (b).
Claim 9
Dependent Claim
45 words
A binary composition consisting essentially of component (a) about 1 to about 15 mole percent 1,1,1,2,2,3,3-heptafluoro-3(1,2,2,2-tetrafluoroethoxy)propane and component (b) about 85 to about 99 mole percent of 1,1,1,2,3-pentafluoropropane wherein at 14.14° C. said binary composition has a vapor pressure higher than component (a) or (b).
Claim 10
Dependent Claim
45 words
A binary composition consisting essentially of component (a) about 1 to about 15 mole percent 1,1,1,2,2,3,3-heptafluoro-3(1,2,2,2-tetrafluoroethoxy)propane and component (b) about 85 to about 99 mole percent of 1,1,1,2,3-pentafluoropropane wherein at 14.14° C. said binary composition has a vapor pressure higher than component (a) or (b).
Claim 11
Dependent Claim
29 words
A process for producing refrigeration, comprising condensing a composition of claims 1, 2 or 3 and thereafter evaporating said composition in the vicinity of the body to be cooled.
Claim 12
Dependent Claim
29 words
A process for producing heat comprising condensing a composition of claims 1, 2 or 3 in the vicinity of a body to be heated, and thereafter evaporating said composition.
Claim 13
Dependent Claim
28 words
A process for producing refrigeration, comprising condensing a composition of claims 4 or 5 and thereafter evaporating said composition in the vicinity of the body to be cooled.
Claim 14
Dependent Claim
28 words
A process for producing heat comprising condensing a composition of claims 4 or 5 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 |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-15 | 1999-07-17 | 2000-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-15 | 2003-07-17 | 2004-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-15 | 2007-07-17 | 2008-01-16 | $7700.00 | Window Closed / Lapsed |