US5124065A
Expired / Lapsed
US
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Azeotrope-like compositions of dichloropentafluoropropane and an alkanol having 1-4 carbon atoms
Assignee: Honeywell International Inc
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Filing: 1990-05-22
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Granted: 1992-06-23
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Expires: 2010-05-22
Abstract
Abstract Stable azeotrope-like compositions consisting essentially of dichloropentafluoropropane and an alkanol having 1-4 carbon atoms which are useful in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
Inventors
- 👤 Hillel Magid
- 👤 David P. Wilson
- 👤 Dennis M. Lavery
- 👤 Richard M. Hollister
- 👤 Richard E. Eibeck
- 👤 Michael Vanderpuy
- 👤 Rajat Basu
- 👤 Ellen L. Swan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:32
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/5068; C11D7/5077; C11D7/5081; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02809; C23G5/02825; C23G5/02841; C23G5/02851
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
Azeotrope-like compositions consisting essentially of from about from about 96 to about 99.99 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from about 0.01 to about 4 weight percent 1-propanol which boil at about 55.5° C. at 747 mm Hg; or from about 98 to about 99.99 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from about 0.01 to about 2 weight percent 2-methyl-2-propanol which boil at about 55.7° C. at 749.1 mm Hg wherein the components of each azeotrope-like composition consist of 1,3-dichloro-1,1,2,2,3-pentafluoropropane and either 1-propanol or 2-methyl-2-propanol.
Claim 2
Dependent Claim
81 words
Azeotrope-like compositions consisting essentially of from about from about 96 to about 99.99 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from about 0.01 to about 4 weight percent 1-propanol which boil at about 55.5° C. at 747 mm Hg; or from about 98 to about 99.99 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from about 0.01 to about 2 weight percent 2-methyl-2-propanol which boil at about 55.7° C. at 749.1 mm Hg wherein the components of each azeotrope-like composition consist of 1,3-dichloro-1,1,2,2,3-pentafluoropropane and either 1-propanol or 2-methyl-2-propanol.
Claim 3
Dependent Claim
25 words
The azeotrope-like compositions of claim 1 wherein said compositions of 1,3-dichloro-1,1,2,2,3-pentafluoropropane and 1-propanol boil at about 55.5° C. ± 0.2° C. at 747 mm Hg.
Claim 4
Dependent Claim
31 words
The azeotrope-like compositions of claim 1 wherein said compositions consist essentially of from about 97 to about 99.99 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from about 0.01 to about 3 weight percent 1-propanol.
Claim 5
Dependent Claim
31 words
The azeotrope-like compositions of claim 3 wherein said compositions consist essentially of from about 98 to about 99.99 weight percent 1,3-dichloro-2,2,3,3,3-pentafluoropropane and from about 0.01 to about 2 weight percent 1-propanol.
Claim 6
Dependent Claim
25 words
The azeotrope-like compositions of claim 1 wherein said compositions of 1,3-dichloro-1,1,2,2,3-pentafluoropropane and 2-methyl-2-propanol boil at about 55.7° C. ± 0.2° C. at 749.1 mm Hg.
Claim 7
Dependent Claim
45 words
The azeotrope-like compositions of claim 1 wherein an effective amount of an inhibitor is present in said compositions to accomplish at least one of the following: inhibit decomposition of the composition; react with undesirable decomposition products of the composition; and prevent corrosion of metal surfaces.
Claim 8
Dependent Claim
29 words
The azeotrope-like compositions of claim 6 wherein said inhibitor is selected from the group consisting of epoxy compounds, nitroalkanes, ethers, acetals, ketals, ketones, tertiary amyl alcohol, esters, and amines.
Claim 9
Dependent Claim
18 words
A method of cleaning a solid surface comprising treating said surface with an azeotrope-like composition of claim 1.
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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) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |