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US4279664A
Expired / Lapsed
US
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Azeotrope-like compositions of trichlorotrifluoroethane, acetone and n-hexane
Assignee: Honeywell International Inc
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Filing: 1980-04-09
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Granted: 1981-07-21
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Expires: 2000-04-09
Abstract
Abstract Azeotrope-like compositions consisting essentially of 1,1,2-trichloro-1,2,2-trifluoroethane, acetone and n-hexane have utility as degreasing agents and as solvents to remove polymeric binders containing inks, such as carbon black which are used in copy machines.
Inventors
- 👤 Francis J. Figiel
- 👤 Aaron Colbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:12
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02809; C23G5/02812; C23G5/02816; C23G5/02819; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/5068; C11D7/509
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
7 words
Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, acetone and n-hexane.
Claim 2
Dependent Claim
7 words
Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, acetone and n-hexane.
Claim 3
Dependent Claim
23 words
Azeotrope-like compositions according to claim 1 comprising about 80-84.4 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, about 12.6-15.8 weight percent acetone and about 3-4.2 weight percent n-hexane.
Claim 4
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 5
Dependent Claim
21 words
The method of cleaning a solid surface which comprise treating said surface with an azeotrope-like composition as defined in claim 2.
Claim 6
Dependent Claim
28 words
The method of cleaning a solid surface as described in claim 3 in which the solid surface is an article contaminated with a polymeric binder containing an ink.
Claim 7
Dependent Claim
28 words
The method of cleaning a solid surface as described in claim 4 in which the solid surface is an article contaminated with a polymeric binder containing an ink.
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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) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |