US4606841A
Expired / Lapsed
US
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Azeotrope-like compositions of trichlorotrifluoroethane, ethanol, acetone, nitromethane and hexane
Assignee: Honeywell International Inc
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Filing: 1984-11-28
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Granted: 1986-08-19
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Expires: 2004-11-28
Abstract
Abstract Azeotrope-like compositions comprising of trichlorotrifluoroethane, ethanol, acetone, nitromethane and hexane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications.
Inventors
- 👤 Rajat S. Basu
- 👤 Earl A. E. Lund
- 👤 Hang T. Pham
- 👤 David P. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:15
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/5068; C11D7/509; C07; C07C; C07C19/00; C07C19/08; C07C19/10; C07C19/12; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02809; C23G5/02812; C23G5/02816; C23G5/02819
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
9 words
Azeotrope-like compositions comprising trichlorotrifluoroethane, ethanol, nitromethane, acetone and hexane.
Claim 2
Dependent Claim
9 words
Azeotrope-like compositions comprising trichlorotrifluoroethane, ethanol, nitromethane, acetone and hexane.
Claim 3
Dependent Claim
11 words
Azeotrope-like compositions according to claim 1 wherein said trichlorotrifluoroethane is 1,1,2-trichloro-1,2,2-trifluoroethane.
Claim 4
Dependent Claim
11 words
Azeotrope-like compositions according to claim 2 wherein said hexane is n-hexane.
Claim 5
Dependent Claim
11 words
Azeotrope-like compositions according to claim 2 wherein said hexane is 2-methylpentane.
Claim 6
Dependent Claim
11 words
Azeotrope-like compositions according to claim 2 wherein said hexane is 3-methylpentane.
Claim 7
Dependent Claim
11 words
Azeotrope-like compositions according to claim 2 wherein said hexane is 2,2-dimethylbutane.
Claim 8
Dependent Claim
11 words
Azeotrope-like compositions according to claim 2 wherein said hexane is 2,3-dimethylbutane.
Claim 9
Dependent Claim
11 words
Azeotrope-like compositions according to claim 2 wherein said hexane is isohexane.
Claim 10
Dependent Claim
52 words
Azeotrope-like compositions according to claim 2 comprising from about 67.6 to about 90.5 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.5 to about 8.1 weight percent ethanol, from 7.4 to about 16.6 weight percent acetone, from about 0.05 to about 0.5 weight percent nitromethane and from about 0.2 to about 8.3 weight percent hexane.
Claim 11
Dependent Claim
63 words
Azeotrope-like compositions according to claim 2 wherein said weight percent 1,1,2-trichloro-1,2,2-trifluoroethane is from about 79.6 to about 89.9, said weight percent ethanol is from about 1.9 to about 2.8, said weight percent acetone is from about 7.7 to about 10.3, said weight percent nitromethane is from about 0.05 to about 0.2 and said weight percent hexane is from about 0.3 to about 8.3.
Claim 12
Dependent Claim
63 words
Azeotrope-like compositions according to claim 2 wherein said weight percent of 1,1,2-trichloro-1,2,2-trifluoroethane is from about 84.0 to about 86.3, said weight percent ethanol is from about 2.1 to about 2.4, said weight percent acetone is from about 7.8 to about 8.8, said weight percent nitromethane is from about 0.1 to about 0.2, said weight percent hexane is from about 3.1 to about 5.9.
Claim 13
Dependent Claim
11 words
Azeotrope-like compositions according to claim 11 wherein said hexane is isohexane.
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 8.
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 11.
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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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |