US5023009A
Expired / Lapsed
US
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Binary azeotropic compositions of 1,1,1,2,3,3-hexafluoro-3-methoxypropane and 2,2,3,3,3-pentafluoropropanol-1
Assignee: EIDP Inc
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Filing: 1990-10-03
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Granted: 1991-06-11
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Expires: 2010-10-03
Abstract
Abstract The azeotropic mixture of 1,1,1,2,3,3-hexafluoro-3-methoxypropane and 2,2,3,3,3-pentafluoropropanol-1, and the use of such azeotropic mixture as: a cleaning agent, a blowing agent, a refrigerant, an aerosol propellant, a heat transfer medium, a fire extinguishing agent, a gaseous dielectric and a power cycle working fluid is disclosed.
Inventors
- 👤 Abid N. Merchant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:38
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/149; A; A62; A62D; A62D1/00; A62D1/0028; C08J9/143; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/06; C09; C09K; C09K3/00; C09K3/30; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/504; C11D7/5063; C23; C23G; C23G5/00; C23G5/02; C23G5/032; C08J2203/00; C08J2203/12; C08J2203/14; C08J2203/142; C08J2203/146; C08J2207/00; C08J2207/04; C09K2205/00; C09K2205/10; C09K2205/11; C09K2205/112; C09K2205/22; C09K2205/32
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
37 words
An azeotropic composition consisting essentially of about 95-99 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane and about 1-5 weight percent 2,2,3,3,3-pentafluoropropanol-1, wherein the composition has a boiling point of about 54.4° C. when the pressure is adjusted to substantially atmospheric pressure.
Claim 2
Dependent Claim
37 words
An azeotropic composition consisting essentially of about 95-99 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane and about 1-5 weight percent 2,2,3,3,3-pentafluoropropanol-1, wherein the composition has a boiling point of about 54.4° C. when the pressure is adjusted to substantially atmospheric pressure.
Claim 3
Dependent Claim
20 words
An azeotropic composition of claim 1, consisting essentially of about 97.0 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane and about 3.0 weight percent 2,2,3,3,3-pentafluoropropanol-1.
Claim 4
Dependent Claim
19 words
A process for cleaning a solid surface which comprises treating said surface with an azeotropic composition of claim 1.
Claim 5
Dependent Claim
19 words
A process of claim 3, wherein the solid surface is a printed circuit board contaminated with flux and flux-residues.
Claim 6
Dependent Claim
17 words
A process of claim 4, wherein the solid surface is a metal, a glass or a plastic.
Claim 7
Dependent Claim
28 words
A process for preparing a polymer foam comprising expanding a polymer with a blowing agent, the improvement wherein the blowing agent is an azeotropic composition of claim 1.
Claim 8
Dependent Claim
23 words
A process for producing refrigeration which comprises evaporating an azeotropic composition of claim 1 in the vicinity of a body to be cooled.
Claim 9
Dependent Claim
23 words
A process for producing heat which comprises condensing an azeotropic composition of claim 1 in the vicinity of a body to be heated.
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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) | 1994-06-10 | 1994-12-10 | 1995-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-10 | 1998-12-10 | 1999-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-10 | 2002-12-10 | 2003-06-11 | $7700.00 | Window Closed / Lapsed |