US5091104A
Expired / Lapsed
US
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Azeotrope-like compositions of tertiary butyl 2,2,2-trifluoroethyl ether and perfluoromethylcyclohexane
Assignee: Honeywell International Inc
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Filing: 1991-06-26
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Granted: 1992-02-25
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Expires: 2011-06-26
Abstract
Abstract Azeotrope-like compositions of tertiary butyl 2,2,2-trifluoroethyl ether and perfluoromethylcyclohexane which are useful in a variety of industrial cleaning applications including defluxing of printed circuit boards.
Inventors
- 👤 Michael Van Der Puy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:05
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/504; C11D7/5063
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
36 words
Azeotrope-like compositions consisting essentially of from about 20 to about 35 weight percent tertiary butyl 2,2,2-trifluoroethyl ether and from about to about 80 weight percent perfluoromethylcyclohexane which boil at about 70.5° C. at 754 m Hg.
Claim 2
Dependent Claim
36 words
Azeotrope-like compositions consisting essentially of from about 20 to about 35 weight percent tertiary butyl 2,2,2-trifluoroethyl ether and from about to about 80 weight percent perfluoromethylcyclohexane which boil at about 70.5° C. at 754 m Hg.
Claim 3
Dependent Claim
19 words
The azeotrope-like composition of claim 1 wherein said composition boils at about 70.5° C.±1.5° C. at 754 mm Hg.
Claim 4
Dependent Claim
34 words
The azeotrope-like compositions of claim 1 wherein said compositions consist essentially of from about 25 to about 35 weight percent tertiary butyl 2,2,2-trifluoroethyl ether and from about 65 to about 75 weight percent perfluoromethylcyclohexane.
Claim 5
Dependent Claim
34 words
The azeotrope-like compositions of claim 1 wherein said compositions consist essentially of from about 26 to about 34 weight percent tertiary butyl 2,2,2-trifluoroethyl ether and from about 66 to about 74 weight percent perfluoromethylcyclohexane.
Claim 6
Dependent Claim
24 words
The azeotrope-like compositions of claim 1 wherein said compositions additionally contain an inhibitor in an effective amount to inhibit the decomposition of the ether.
Claim 7
Dependent Claim
24 words
The azeotrope-like compositions of claim 3 wherein said compositions additionally contain an inhibitor in an effective amount to inhibit the decomposition of the ether.
Claim 8
Dependent Claim
24 words
The azeotrope-like compositions of claim 4 wherein said compositions additionally contain an inhibitor in an effective amount to inhibit the decomposition of the ether.
Claim 9
Dependent Claim
41 words
The azeotrope-like compositions of claim 5 wherein said inhibitor is selected from the group consisting of diphenyl phosphite, triphenyl phosphite, tri-iso-octyl phosphite, di-octyl phosphite, tri-iso-decyl, phosphite, 2,6-diethyl phenol, 2,4,6-triethyl phenol, 2,6-dipropyl phenol, 2,4,6-tripropyl phosphite, cis-2-hexane, trans-2-hexane,2-ethyl-1,3-butadiene, 1,2-pentadiene, cis-1-hexene, trans-1-hexene, and di-isobuytylene.
Claim 10
Dependent Claim
41 words
The azeotrope-like compositions of claim 6 wherein said inhibitor is selected from the group consisting of diphenyl phosphite, triphenyl phosphite, tri-iso-octyl phosphite, di-octyl phosphite, tri-iso-decyl phosphite, 2,6-diethyl phenol, 2,4,6-triethyl phenol, 2,6-dipropyl phenol, 2,4,6-tripropyl phosphite, cis-2-hexane, trans-2-hexane,2-ethyl-1,3-butadiene, 1,2-pentadiene, cis-1-hexene, trans-1-hexene, and di-isobuytylene.
Claim 11
Dependent Claim
41 words
The azeotrope-like compositions of claim 7 wherein said inhibitor is selected from the group consisting of diphenyl phosphite, triphenyl phosphite, tri-iso-octyl phosphite, di-octyl phosphite, tri-iso-decyl phosphite, 2,6-diethyl phenol, 2,4,6-triethyl phenol, 2,6-dipropyl phenol, 2,4,6-tripropyl phosphite, cis-2-hexane, trans-2-hexane,2-ethyl-1,3-butadiene, 1,2-pentadiene, cis-1-hexene, trans-1-hexene, and di-isobuytylene.
Claim 12
Dependent Claim
18 words
A method of cleaning a solid surface comprising treating said surface with an azeotrope-like composition of claim 1.
Claim 13
Dependent Claim
18 words
A method of cleaning a solid surface comprising treating said surface with an azeotrope-like composition of claim 3.
Claim 14
Dependent Claim
18 words
A method of cleaning a solid surface comprising treating said surface with an azeotrope-like composition of claim 4.
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) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |