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US5064559A
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Binary azeotropic compositions of (CF3 CHFCHFCF2 CF3) with methanol or ethanol or isopropanol
Assignee: EIDP Inc
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Filing: 1990-10-11
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Granted: 1991-11-12
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Expires: 2010-10-11
Abstract
Abstract Azeotropic mixtures of 1,1,1,2,3,4,4,5,5,5-decafluoropentane and methanol or ethanol or isopropanol, the azeotropic mixtures being useful in solvent cleaning applications, as blowing agents, refrigerants, heating mediums and aerosol propellants.
Inventors
- 👤 Abid N. Merchant
- 👤 Carl G. Krespan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:11
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/22; C11D7/26; C11D7/261; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/149; C09; C09K; C09K3/00; C09K3/30; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C11D7/50; C11D7/5036; C11D7/5068; C11D7/5077; C11D7/5081; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02803; C08J2207/00; C08J2207/04; C09K2205/00; C09K2205/10; C09K2205/102; C09K2205/32; C11D2111/00; C11D2111/10; C11D2111/14; C11D2111/22; H; H05; H05K; H05K3/00; H05K3/22; H05K3/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
97 words
An azeotropic composition consisting essentially of: (a) 89.0-99.0 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane with 1.0-11.0 weight percent methanol, wherein the composition has a boiling point of about 39.9° C. when the pressure is adjusted to substantially atmospheric pressure; (b) 91.0-99.0 weight percent 1,1,1,2,3,4,5,5,5-decafluoropentane with 1.0-9.0 weight percent ethanol, wherein the composition has a boiling point of about 43.4° C. when the pressure is adjusted to substantially atmospheric pressure; or (c) 93.0-99.0 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane with 1.0-7.0 weight percent isopropanol, wherein the composition has a boiling point of about 45.5° C. when the pressure is adjusted to substantially atmospheric pressure.
Claim 2
Dependent Claim
97 words
An azeotropic composition consisting essentially of: (a) 89.0-99.0 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane with 1.0-11.0 weight percent methanol, wherein the composition has a boiling point of about 39.9° C. when the pressure is adjusted to substantially atmospheric pressure; (b) 91.0-99.0 weight percent 1,1,1,2,3,4,5,5,5-decafluoropentane with 1.0-9.0 weight percent ethanol, wherein the composition has a boiling point of about 43.4° C. when the pressure is adjusted to substantially atmospheric pressure; or (c) 93.0-99.0 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane with 1.0-7.0 weight percent isopropanol, wherein the composition has a boiling point of about 45.5° C. when the pressure is adjusted to substantially atmospheric pressure.
Claim 3
Dependent Claim
19 words
The azeotropic composition of claim 1, consisting essentially of 89.0-99.0 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane and about 1.0-11.0 weight percent methanol.
Claim 4
Dependent Claim
18 words
The azeotropic composition of claim 2, consisting essentially of 93-97 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane and 3-7 weight percent methanol.
Claim 5
Dependent Claim
20 words
The azeotropic composition of claim 2, consisting essentially of about 95.3 weight percent 1,1,1,2,3,4,4,5,5,5-pentafluoropentane and about 4.7 weight percent methanol.
Claim 6
Dependent Claim
19 words
The azeotropic composition of claim 1, consisting essentially of about 91.0-99.0 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane and 1.0-9.0 weight percent ethanol.
Claim 7
Dependent Claim
18 words
The azeotropic composition of claim 5, consisting essentially of 94-98 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane and 2-6 weight percent ethanol.
Claim 8
Dependent Claim
20 words
The azeotropic composition of claim 5, consisting essentially of about 97.1 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane and about 2.9 weight percent ethanol.
Claim 9
Dependent Claim
20 words
The azeotropic composition of claim 1, consisting essentially of about 93.0-99.0 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane and about 1.0-7.0 weight percent isopropanol.
Claim 10
Dependent Claim
18 words
The azeotropic composition of claim 8, consisting essentially of 94-98 weight percent 1,1,1,2,3,4,5,5,5-decafluoropentane and 2-6 weight percent isopropanol.
Claim 11
Dependent Claim
20 words
The azeotropic composition of claim 8, consisting essentially of about 97.4 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane and about 2.6 weight percent isopropanol.
Claim 12
Dependent Claim
19 words
A process for cleaning a solid surface which comprises treating said surface with an azeotropic composition of claim 1.
Claim 13
Dependent Claim
19 words
The process of claim 11, wherein the solid surface is a printed circuit board contaminated with flux and flux-residues.
Claim 14
Dependent Claim
12 words
The process of claim 12, wherein the solid surface is a metal.
Claim 15
Dependent Claim
23 words
A process for producing a refrigeration which comprises evaporating a mixture of claim 1 in the vicinity of a body to be cooled.
Claim 16
Dependent Claim
22 words
A process for producing heat which comprises condensing a composition of claim 1 in the vicinity of a body to be heated.
Claim 17
Dependent Claim
28 words
In a process for preparing a polymer foam comprising expanding a polymer with a blowing agent, the improvement wherein the blowing agent is a composition of claim 1.
Claim 18
Dependent Claim
22 words
In an aerosol composition comprising a propellant and an active agent, the improvement wherein the propellant is a composition of claim 1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |