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US5073290A
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Compositions of 1,1,1,2,2,5,5,5-octafluoro-4-trifluormethypentane and use thereof for cleaning solid surfaces
Assignee: EIDP Inc
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Filing: 1990-08-17
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Granted: 1991-12-17
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Expires: 2010-08-17
Abstract
Abstract Mixtures of the compound 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane with alcohols, ethers, esters, ketones, nitrogen-containing organic compounds, and halogenated hydrocarbons are disclosed; as is a process for cleaning a solid surface which comprises treating the surface with said mixtures. Binary mixtures of 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane with about 5 to 13 weight percent methanol, with about 2 to 10 weight percent ethanol, with about 3 to 11 weight percent isopropanol, with about 50 to 58 weight percent dichloromethane, and with about 1 to 9 weight percent acetonitrile, are disclosed as azeotrope or azeotrope-like compositions and are particularly suited for use where solvent recovery and reuse is practiced.
Inventors
- 👤 Douglas R. Anton
- 👤 Frank J. Weigert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:27
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/5068; C11D7/5095; C11D7/504; C11D7/5059; C11D7/5077; C11D7/5081; C11D7/5086
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
88 words
A cleaning composition consisting essentially of (i) between 5 and 99 percent by weight 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and (ii) at least about 1 percent by weight of at least one solvent selected from the group consisting of alcohols containing from 1 to 4 carbon atoms, esters containing from 3 to 6 carbon atoms, ethers containing from 2 to 6 carbon atoms, ketones containing from 3 to 6 carbon atoms, halogenated hydrocarbons containing from 1 to 4 carbonatoms wherein the halogen is chlorine or both chlorine and fluorine, acetonitrile, and nitromethane.
Claim 2
Dependent Claim
88 words
A cleaning composition consisting essentially of (i) between 5 and 99 percent by weight 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and (ii) at least about 1 percent by weight of at least one solvent selected from the group consisting of alcohols containing from 1 to 4 carbon atoms, esters containing from 3 to 6 carbon atoms, ethers containing from 2 to 6 carbon atoms, ketones containing from 3 to 6 carbon atoms, halogenated hydrocarbons containing from 1 to 4 carbonatoms wherein the halogen is chlorine or both chlorine and fluorine, acetonitrile, and nitromethane.
Claim 3
Dependent Claim
37 words
A composition according to claim 1 which is a mixture of 1,1,1,2,2,5,5,5-octafluoro-4-trifluoro-methylpentane and at least one solvent selected from the group consisting of methanol, ethanol, isopropanol, tetrahydrofuran, acetone, methylene chloride, 1,1,2-trichloro-1,2,2-trifluoroethane, dichlorodifluoroethane, trichloroethane, trans-1,2-dichloroethylene, acetonitrile, and nitromethane.
Claim 4
Dependent Claim
11 words
The composition of claim 1 in which no component contains chlorine.
Claim 5
Dependent Claim
24 words
The composition of claim 3 which is a mixture of 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and solvent selected from the group consisting of methanol, ethanol, isopropanol, and acetonitrile.
Claim 6
Dependent Claim
25 words
The composition of claim 1 which is a mixture of 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and solvent selected from the group consisting of methanol, ethanol, isopropanol, dichloromethane, and acetonitrile.
Claim 7
Dependent Claim
20 words
A composition comprising from about 87 to 95 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and from about 5 to 13 weight percent methanol.
Claim 8
Dependent Claim
20 words
A composition comprising from about 87 to 95 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and from about 5 to 13 weight percent methanol.
Claim 9
Dependent Claim
19 words
The composition of claim 6 consisting essentially of about 91 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoro-methylpentane and about 9 weight percent methanol.
Claim 10
Dependent Claim
44 words
The composition of claim 1 consisting essentially of an azeotrope-like mixture of from about 90 to 98 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and from about 2 to 10 weight percent ethanol wherein the composition has a boiling point of about 49° C. at substantially atmospheric pressure.
Claim 11
Dependent Claim
20 words
A composition comprising from about 90 to 98 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and from about 2 to 10 weight percent ethanol.
Claim 12
Dependent Claim
20 words
A composition comprising from about 90 to 98 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and from about 2 to 10 weight percent ethanol.
Claim 13
Dependent Claim
19 words
The composition of claim 9 consisting essentially of about 94 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoro-methylpentane and about 6 weight percent ethanol.
Claim 14
Dependent Claim
44 words
The composition of claim 9 consisting essentially of an azeotrope-like mixture of from about 90 to 98 weight percent 1,1,1,2,2,5,5,5octafluoro-4-trifluoromethylpentane and from about 2 to 10 weight percent ethanol wherein the composition has a boiling point of about 55° C. at substantially atmospheric pressure.
Claim 15
Dependent Claim
20 words
A composition comprising from about 89 to 97 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane, and from about 3 to 11 weight percent isopropanol.
Claim 16
Dependent Claim
20 words
A composition comprising from about 89 to 97 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane, and from about 3 to 11 weight percent isopropanol.
Claim 17
Dependent Claim
19 words
The composition of claim 12 consisting essentially, of about 93 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoro-methylpentane and about 7 weight percent isopropanol.
Claim 18
Dependent Claim
44 words
The composition of claim 12, consisting essentially of an azeotrope-like mixture of from about 89 to 97 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and from about 3 to 11 weight percent isopropanol wherein the composition has a boiling point of about 57° C. at substantially atmospheric pressure.
Claim 19
Dependent Claim
20 words
A composition comprising from about 42 to 50 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and has about 50 to 58 weight percent dichloromethane.
Claim 20
Dependent Claim
20 words
A composition comprising from about 42 to 50 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and has about 50 to 58 weight percent dichloromethane.
Claim 21
Dependent Claim
19 words
The composition of claim 15 consisting essentially at about 46 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethyl-pentane and about 54 weight percent dichloromethane.
Claim 22
Dependent Claim
44 words
The composition of claim 15, consisting essentially of an azeotrope-like mixture of from about 42 to 50 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and from about 50 to 58 weight percent dichloromethane wherein the composition has a boiling point of about 35° C. at substantially atmospheric pressure.
Claim 23
Dependent Claim
20 words
An composition comprising from about 91 to 99 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and from about 1 to 9 weight percent acetonitrile.
Claim 24
Dependent Claim
20 words
An composition comprising from about 91 to 99 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and from about 1 to 9 weight percent acetonitrile.
Claim 25
Dependent Claim
19 words
The composition of claim 18 consisting essentially of about 95 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethyl-pentane and about 5 weight percent acetonitrile.
Claim 26
Dependent Claim
45 words
The composition of claim 18, consisting essentially of an azeotrope-like mixture of from about 91 to 99 weight percent 1,1,1,2,2,5,5,5-octafluoro-4-trifluoromethylpentane and from about 1 to 9 weight percent acetonitrile wherein wherein the composition has a boiling point of about 61° C. at substantially atmospheric pressure.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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