US4863630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane and ethanol
Assignee: Honeywell International Inc
•
Filing: 1989-03-29
•
Granted: 1989-09-05
•
Expires: 2009-03-29
Abstract
Abstract Azeotrope-like compositions comprising 1,1-dichoro-1-fluoroethane, dichlorotrifluoroethane and ethanol are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.
Inventors
- 👤 Ellen L. Swan
- 👤 Rajat S. Basu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:24
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; C23G5/02829; C23G5/02832; H; H05; H05K; H05K3/00; H05K3/22; H05K3/26
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
91 words
Azeotrope-like compositions consisting essentially of from about 62.5 to about 94.9 weight percent 1,1-dichloro-1-fluoroethane, from about 3.0 to about 35.5 weight percent dichlorotrifluoroethane selected from the group consisting of 1,2-dichloro-1,2,2-trifluoroethane, 1,1-dichloro-2,2,2,-trifluoroethane or mixtures thereof and from about 0.1 to about 3.0 weight percent ethanol wherein the composition with 1,2,-dichloro-1,2,2-trifluoroethane boils at about 32.0° C.±0.5° C. at 760 mm Hg, the composition with 1,1-dichloro-2,2,2-trifluoroethane boils at about 31.6° C.±0.5° C. at 760 mm Hg and the composition with mixtures of the dichlorotrifluoroethanes boils at about 31.8° C.±0.5° C. at 760 mm Hg.
Claim 2
Dependent Claim
91 words
Azeotrope-like compositions consisting essentially of from about 62.5 to about 94.9 weight percent 1,1-dichloro-1-fluoroethane, from about 3.0 to about 35.5 weight percent dichlorotrifluoroethane selected from the group consisting of 1,2-dichloro-1,2,2-trifluoroethane, 1,1-dichloro-2,2,2,-trifluoroethane or mixtures thereof and from about 0.1 to about 3.0 weight percent ethanol wherein the composition with 1,2,-dichloro-1,2,2-trifluoroethane boils at about 32.0° C.±0.5° C. at 760 mm Hg, the composition with 1,1-dichloro-2,2,2-trifluoroethane boils at about 31.6° C.±0.5° C. at 760 mm Hg and the composition with mixtures of the dichlorotrifluoroethanes boils at about 31.8° C.±0.5° C. at 760 mm Hg.
Claim 3
Dependent Claim
11 words
Azeotrope-like compositions according to claim 1 wherein said dichlorotrifluoroethane is 1,2-dichloro-1,2,2-trifluoroethane.
Claim 4
Dependent Claim
11 words
Azeotrope-like compositions according to claim 1 wherein said dichlorotrifluoroethane is 1,1-dichloro-2,2,2-trifluoroethane.
Claim 5
Dependent Claim
37 words
Azeotrope-like compositions according to claim 1 consisting essentially of from about 72.0 to about 94.7 weight percent 1,1-dichloro-1-fluoroethane, from about 5.0 to about 26.0 weight percent dichlorotrifluoroethane and from about 0.3 to about 2.0 weight percent ethanol.
Claim 6
Dependent Claim
37 words
Azeotrope-like compositions according to claim 1 consisting essentially of from about 75.0 to about 90.0 weight percent 1,1-dichloro-1-fluoroethane, from about 8.0 to about 24.7 weight percent dichlorotrifluoroethane and from about 0.3 to about 1.5 weight percent ethanol.
Claim 7
Dependent Claim
34 words
Azeotrope-like compositions according to claim 1 consisting essentially of about 77.2 to about 90.3 weight percent 1,1-dichloro-1-fluoroethane, about 8.1 to about 21.7 weight percent dichlorotrifluoroethane and about 0.5 to about 1.5 weight percent ethanol.
Claim 8
Dependent Claim
11 words
Azeotrope-like compositions according to claim 6 wherein said dichlorotrifluoroethane is 1,2-dichloro-1,2,2-trifluoroethane.
Claim 9
Dependent Claim
11 words
Azeotrope-like compositions according to claim 6 wherein said dichlorotrifluoroethane is 1,1-dichloro-2,2,2-trifluoroethane.
Claim 10
Dependent Claim
67 words
Azeotrope-like compositions consisting essentially of 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane selected from the group consisting of 1,2-dichloro-1,2,2-trifluoroethane, 1,1-dichloro-2,2,2,-trifluoroethane or mixtures thereof and ethanol wherein the composition with 1,2-dichloro-1,2,2-trifluoroethane boils at about 32.0° C.±0.5° C. at 760 mm Hg, the composition with 1,1-dichloro-2,2,2-trifluoroethane boils at about 31.6° C.±0.5° C. at 760 mm Hg and the composition with mixtures of the dichlorotrifluoroethanes boils at about 31.8° C.±0.5° C. at 760 mm Hg.
Claim 11
Dependent Claim
67 words
Azeotrope-like compositions consisting essentially of 1,1-dichloro-1-fluoroethane, dichlorotrifluoroethane selected from the group consisting of 1,2-dichloro-1,2,2-trifluoroethane, 1,1-dichloro-2,2,2,-trifluoroethane or mixtures thereof and ethanol wherein the composition with 1,2-dichloro-1,2,2-trifluoroethane boils at about 32.0° C.±0.5° C. at 760 mm Hg, the composition with 1,1-dichloro-2,2,2-trifluoroethane boils at about 31.6° C.±0.5° C. at 760 mm Hg and the composition with mixtures of the dichlorotrifluoroethanes boils at about 31.8° C.±0.5° C. at 760 mm Hg.
Claim 12
Dependent Claim
22 words
Azeotrope-like compositions according to claim 9 wherein said dichlorotrifluoroethane is 1,2-dichloro-1,2,2-trifluoroethane which boil at about 32.0° C.±0.5° C. at 760 mm Hg.
Claim 13
Dependent Claim
22 words
Azeotrope-like compositions according to claim 9 wherein said dichlorotrifluoroethane is 1,1-dichloro-2,2,2-trifluoroethane which boil at about 31.6° C.±0.5° C. at 760 mm Hg.
Claim 14
Dependent Claim
21 words
The method of cleaning a solid surface which comprises treating said surface with an azeotrope-like composition as defined in claim 1.
Claim 15
Dependent Claim
21 words
The method of cleaning a solid surface which comprises treating said surface with an azeotrope-like composition as defined in claim 2.
Claim 16
Dependent Claim
21 words
The method of cleaning a solid surface which comprises treating said surface with an azeotrope-like composition as defined in claim 3.
Claim 17
Dependent Claim
21 words
The method of cleaning a solid surface which comprises treating said surface with an azeotrope-like composition as defined in claim 4.
Claim 18
Dependent Claim
21 words
The method of cleaning a solid surface which comprises treating said surface with an azeotrope-like composition as defined in claim 9.
Claim 19
Dependent Claim
21 words
The method of cleaning a solid surface which comprises treating said surface with an azeotrope-like composition as defined in claim 10.
Claim 20
Dependent Claim
21 words
The method of cleaning a solid surface which comprises treating said surface with an azeotrope-like composition as defined in claim 11.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |