US5084199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,1,2,2,3,3-hexafluorocyclopentane and use thereof in compositions and processes for cleaning
Assignee: EIDP Inc
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Filing: 1990-10-09
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Granted: 1992-01-28
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Expires: 2010-10-09
Abstract
Abstract The compound 1,1,2,2,3,3-hexafluorocyclopentane and mixtures thereof with alcohols, ethers, esters, ketones, nitromethane, and halogenated hydrocarbons are disclosed; as is a process for cleaning a solid surface which comprises treating the surface with said compound or said mixtures. Binary mixtures of 1,1,2,2,3,3-hexafluorocyclopentane either with about 27 to 35 weight percent methanol, or with about 21 to 29 weight percent ethanol are disclosed as azeotrope or azeotrope-like compositions and are particularly suited for use where solvent recovery and reuse is practiced.
Inventors
- 👤 Robert D. Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:24
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02803; C07; C07C; C07C17/00; C07C17/23; C07C23/00; C07C23/02; C07C23/08; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/5068; C11D7/5077; C11D7/5081; H; H05; H05K; H05K3/00; H05K3/22; H05K3/26
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
49 words
A cleaning composition consisting essentially of effective amounts of (i) 1,1,2,2,3,3-hexafluorocyclopentane and (ii) one or more solvents selected from the group consisting of alcohols containing from 1 to 4 carbon atoms, to form an azeotrope or azeotrope-like mixture which contains between about 5 and 95 percent by weight 1,1,2,2,3,3-hexafluorocyclopentane.
Claim 2
Dependent Claim
49 words
A cleaning composition consisting essentially of effective amounts of (i) 1,1,2,2,3,3-hexafluorocyclopentane and (ii) one or more solvents selected from the group consisting of alcohols containing from 1 to 4 carbon atoms, to form an azeotrope or azeotrope-like mixture which contains between about 5 and 95 percent by weight 1,1,2,2,3,3-hexafluorocyclopentane.
Claim 3
Dependent Claim
26 words
A composition according to claim 1 which is a mixture of 1,1,2,2,3,3-hexafluorocyclopentane with one or more compounds selected from the group consisting of methanol, ethanol, isopropanol.
Claim 4
Dependent Claim
12 words
The composition of claim 1 in which all components contain no chlorine.
Claim 5
Dependent Claim
22 words
The composition of claim 3 which is a mixture of 1,1,2,2,3,3-hexafluoropentane and alcohol selected from the group consisting of methanol and ethanol.
Claim 6
Dependent Claim
12 words
The composition of claim 2 in which all components contain no chlorine.
Claim 7
Dependent Claim
23 words
An azeotrope or azeotrope-like composition comprising from about 65 to 73 weight percent 1,1,2,2,3,3-hexafluorocyclopentane and from about 27 to 35 weight percent methanol.
Claim 8
Dependent Claim
23 words
An azeotrope or azeotrope-like composition comprising from about 65 to 73 weight percent 1,1,2,2,3,3-hexafluorocyclopentane and from about 27 to 35 weight percent methanol.
Claim 9
Dependent Claim
22 words
The azeotrope or azeotrope-like composition of claim 6 consisting essentially of about 69 weight percent 1,1,2,2,3,3-hexafluorocyclopentane and about 31 weight percent methanol.
Claim 10
Dependent Claim
23 words
The azeotrope or azeotrope-like composition of claim 6 wherein the composition has a boiling point at about 61° C. at substantially atmospheric pressure.
Claim 11
Dependent Claim
23 words
An azeotrope or azeotrope-like composition comprising from about 71 to 79 weight percent 1,1,2,2,3,3-hexafluorocyclopentane and from about 21 to 29 weight percent ethanol.
Claim 12
Dependent Claim
23 words
An azeotrope or azeotrope-like composition comprising from about 71 to 79 weight percent 1,1,2,2,3,3-hexafluorocyclopentane and from about 21 to 29 weight percent ethanol.
Claim 13
Dependent Claim
22 words
The azeotrope or azeotrope-like composition of claim 9 consisting essentially of about 75 weight percent 1,1,2,2,3,3-hexafluorocyclopentane and about 25 weight percent ethanol.
Claim 14
Dependent Claim
23 words
The azeotrope or azeotrope-like composition of claim 9 wherein the composition has a boiling point of about 71° C. at substantially atmospheric pressure.
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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) | 1995-01-27 | 1995-07-29 | 1996-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-27 | 1999-07-29 | 2000-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-27 | 2003-07-29 | 2004-01-28 | $7700.00 | Window Closed / Lapsed |