US4997589A
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US
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Azeotrope-like compositions of 1,2-difluoroethane and dichlorotrifluoroethane
Assignee: Honeywell International Inc
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Filing: 1989-12-15
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Granted: 1991-03-05
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Expires: 2009-12-15
Abstract
Abstract Novel azeotrope-like compositions comprising 1,2-difluoroethane and dichlorotrifuoroethane which are useful in a variety of industrial applications including refrigerant applications, solvent applications, and blowing agent applications.
Inventors
- 👤 Earl E. A. Lund
- 👤 Ian R. Shankland
- 👤 Ellen L. Swan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:22
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/504; C11D7/5045; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02809; C23G5/02825; C23G5/02829; C23G5/02838; C09K2205/00; C09K2205/10; C09K2205/12; C09K2205/122; C09K2205/32
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
34 words
The azeotrope-like compositions consisting essentially of from about 50 to about 95 weight percent 1,1-dichloro-2,2,2-trifluoroethane and from about 5 to about 50 weight percent 1,2-difluoroethane and-boil at about 26.1° C. at 760 mm Hg.
Claim 2
Dependent Claim
34 words
The azeotrope-like compositions consisting essentially of from about 50 to about 95 weight percent 1,1-dichloro-2,2,2-trifluoroethane and from about 5 to about 50 weight percent 1,2-difluoroethane and-boil at about 26.1° C. at 760 mm Hg.
Claim 3
Dependent Claim
41 words
The azeotrope-like compositions of claim 1 wherein said compositions consist of essentially from about 70 to about 90 weight percent 1,1-dichloro-2,2,2-trifluoroethane and from about 10.0 to about 30.0 weight percent 1,2-difluoroethane and boil at about 26.1° C. at 760 mm Hg.
Claim 4
Dependent Claim
33 words
The azeotrope-like compositions of claim 1 wherein said compositions consist essentially of about 78 weight percent 1,1-dichloro-2,2,2-trifluoroethane and about 22 weight percent 1,2-difluoroethane and boil at about 26.1° C. at 760 mm Hg.
Claim 5
Dependent Claim
41 words
Azeotrope-like compositions of claim 3 wherein said compositions consist consisting essentially of from about 50 to about 80 weight percent 1,2-dichloro-1,1,2-trifluoroethane and from about 20 to about 50.0 weight percent 1,2-difluoroethane and boil at about 27.2° C. at 760 mm Hg.
Claim 6
Dependent Claim
41 words
The azeotrope-like compositions of claim 4 wherein said compositions consist essentially of from about 60 to about 80.0 weight percent 1,2-dichloro-1,1,2-trifluoroethane and from about 20.0 to about 40.0 weight percent 1,2-difluoroethane and boil at about 27.2° C. at 760 mm Hg.
Claim 7
Dependent Claim
33 words
The azeotrope-like compositions of claim 4 wherein said compositions consist essentially of about 68 weight percent 1,2-dichloro-1,1,2-trifluoroethane and about 32 weight percent 1,2-difluoroethane and boil at about 27.2° C. at 760 mm Hg.
Claim 8
Dependent Claim
40 words
Azeotrope-like compositions consisting essentially of from about 50 to about 95 weight percent of a mixture of 1,1-dichloro-2,2,2-trifluoroethane and 1,2-dichloro-1,1,2-trifluoroethane and from about 5 to about 50 weight percent 1,2-difluoroethane and boil at about 25.4° C. at 760 mm Hg.
Claim 9
Dependent Claim
40 words
Azeotrope-like compositions consisting essentially of from about 50 to about 95 weight percent of a mixture of 1,1-dichloro-2,2,2-trifluoroethane and 1,2-dichloro-1,1,2-trifluoroethane and from about 5 to about 50 weight percent 1,2-difluoroethane and boil at about 25.4° C. at 760 mm Hg.
Claim 10
Dependent Claim
46 words
The azeotrope-like compositions of claim 7 wherein said compositions consist essentially from about 70 to about 90 weight percent of a mixture of 1,1-dichloro-2,2,2-trifluoroethane and 1,2-dichloro-1,1,2-trifluoroethane and from about 10 to about 30 weight percent 1,2-difluoroethane and boil at about 25.4° C. at 760 mm Hg.
Claim 11
Dependent Claim
42 words
Azeotrope-like compositions consisting essentially of from about 50 to about 95 weight percent of a mixture of 1,1-dichloro 2,2,2-trifluoroethane and 1,2-dichloro-1,1,2-trifluoroethane and from about 5 to about 50 weight percent 1,2-difluoroethane and boil at about 25.4° C.±0.8° C. at 760 mm Hg.
Claim 12
Dependent Claim
42 words
Azeotrope-like compositions consisting essentially of from about 50 to about 95 weight percent of a mixture of 1,1-dichloro 2,2,2-trifluoroethane and 1,2-dichloro-1,1,2-trifluoroethane and from about 5 to about 50 weight percent 1,2-difluoroethane and boil at about 25.4° C.±0.8° C. at 760 mm Hg.
Claim 13
Dependent Claim
36 words
The azeotrope-like compositions of claim 7 wherein said compositions consist essentially of from about 50 to about 90 weight percent of a mixture of 1,1-dichloro-2,2,2-trifluoroethane and 1,2-dichloro-1,1,2-trifluoroethane and from about 10 to about 50 weight 1,2-difluoroethane.
Claim 14
Dependent Claim
27 words
A method for producing cooling comprising condensing the refrigerant composition of claim 1 and thereafter evaporating said composition in the vicinity of a body to be cooled.
Claim 15
Dependent Claim
27 words
A method for producing cooling comprising condensing the refrigerant composition of claim 4 and thereafter evaporating said composition in the vicinity of a body to be cooled.
Claim 16
Dependent Claim
27 words
A method for producing cooling comprising, condensing the refrigerant composition of claim 7 and thereafter evaporating said composition in the vicinity of a body to be cooled.
Claim 17
Dependent Claim
27 words
A method for producing heating comprising condensing the refrigerant composition of claim 1 in the vicinity of a body to be heated and thereafter evaporating said composition.
Claim 18
Dependent Claim
27 words
A method for producing heating comprising condensing the refrigerant composition of claim 4 in the vicinity of a body to be heated and thereafter evaporating said composition.
Claim 19
Dependent Claim
27 words
A method for producing heating comprising condensing the refrigerant composition of claim 7 in the vicinity of a body to be heated and thereafter evaporating said composition.
Claim 20
Dependent Claim
37 words
A method for preparing polyurethane and polyisocyanurate foams comprising reacting and foaming a mixture of ingredients which will react to form the polyurethane and polyisocyanurate foams in the presence of a blowing agent composition of claim 1.
Claim 21
Dependent Claim
37 words
A method for preparing polyurethane and polyisocyanurate foams comprising reacting and foaming a mixture of ingredients which will react to form the polyurethane and polyisocyanurate foams in the presence of a blowing agent composition of claim 4.
Claim 22
Dependent Claim
36 words
A method for preparing polyurethane and polyisocyanurate foams comprising reacting and foaming a mixture of ingredients which will react to form the polyurethane and polyisocyanurate foams/in the presence of a blowing agent composition of claim 7.
Claim 23
Dependent Claim
18 words
A method of cleaning a solid surface comprising treating said surface with an azeotrope-like composition of claim 1.
Claim 24
Dependent Claim
18 words
A method of cleaning a solid surface comprising treating said surface with an azeotrope-like composition of claim 4.
Claim 25
Dependent Claim
18 words
A method of cleaning a solid surface comprising treating said surface with an azeotrope-like composition of claim 7.
References Cited (Backward Citations)
US2101993A
Cited
US2641579A
Cited
US3352789A
Cited
US3940342A
Cited
US4173530A
Cited
US4303536A
Cited
US4624970A
Cited
JPS63305187A
Cited
JPS648292A
Cited
JPH01103689A
Cited
EP0314978A1
Cited
US4816176A
Cited
US4816175A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
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