US5037573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binary azeotropic compositions of 1,1-dichloro-1-fluoroethane and n-perfluorobutylethylene
Assignee: EIDP Inc
•
Filing: 1990-10-03
•
Granted: 1991-08-06
•
Expires: 2010-10-03
Abstract
Abstract The azeotropic mixture of 1,1-dichloro-1-fluoroethane and n-perfluorobutylethylene is disclosed. The azeotropic mixture is useful as: a cleaning agent, a blowing agent, a refrigerant, an aerosol propellant, a fire extinguishing agent, a heat transfer medium and a power cycle working fluid.
Inventors
- 👤 Abid N. Merchant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:46
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; A; A62; A62D; A62D1/00; A62D1/0028; A62D1/0057; C09K3/00; C09K3/30; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/504; C11D7/5054; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02809; C23G5/02825; C23G5/02829; C23G5/02832; C09K2205/00; C09K2205/10; C09K2205/12; C09K2205/122; C09K2205/126; C09K2205/128
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
40 words
An azeotropic composition wherein the composition consists essentially of about 94.0-99.0 weight percent 1,1-dichloro-1-fluoroethane and about 1.0-6.0 weight percent n-perfluorobutylethylene wherein the composition has a boiling point of about 31.2° C. when the pressure is adjusted to substantially atmospheric pressure.
Claim 2
Dependent Claim
40 words
An azeotropic composition wherein the composition consists essentially of about 94.0-99.0 weight percent 1,1-dichloro-1-fluoroethane and about 1.0-6.0 weight percent n-perfluorobutylethylene wherein the composition has a boiling point of about 31.2° 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 97.5 weight percent 1,1-dichloro-1-fluoroethane and about 2.5 weight percent n-perfluorobutylethylene.
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
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 8
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.
Claim 9
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.
References Cited (Backward Citations)
US2999815A
Cited
US2999817A
Cited
US3789088A
Cited
US3881949A
Cited
US3903009A
Cited
GB2097406A
Cited
US4482902A
Cited
EP0126559A1
Cited
US4624988A
Cited
JPH02173145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |