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US5035831A
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Azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane, nitromethane, 1,2-dichloroethylene, and ethanol or isopropanol
Assignee: Honeywell International Inc
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Filing: 1989-10-06
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Granted: 1991-07-30
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Expires: 2009-10-06
Abstract
Abstract Stable azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane, nitromethane, 1,2-dichloroethylene and an alkanol which are useful in a variety of industrial cleaning applications.
Inventors
- 👤 Hillel Magid
- 👤 Ian R. Shankland
- 👤 David P. Wilson
- 👤 Kane D. Cook
- 👤 Earl A. E. Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:51
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/5068; C11D7/5077; C11D7/5081; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02809; C23G5/02812; C23G5/02816; C23G5/02819; H; H05; H05K; H05K3/00; H05K3/22; H05K3/26
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
52 words
Azeotrope-like compositions consisting essentially of from about 62.8 to about 68.4 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.0 to about 3.0 weight percent isopropanol, from about 0.01 to about 1.0 weight percent nitromethane, and from about 30.0 to about 36.0 weight percent trans-1,2-dichloroethylene which boil at about 43.6° C. at 760 mm Hg.
Claim 2
Dependent Claim
52 words
Azeotrope-like compositions consisting essentially of from about 62.8 to about 68.4 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.0 to about 3.0 weight percent isopropanol, from about 0.01 to about 1.0 weight percent nitromethane, and from about 30.0 to about 36.0 weight percent trans-1,2-dichloroethylene which boil at about 43.6° C. at 760 mm Hg.
Claim 3
Dependent Claim
49 words
The azeotrope-like compositions of claim 1 wherein said compositions consist essentially of from about 63.0 to about 67.5 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.2 to about 2.8 weight percent isopropanol, from about 0.01 to about 0.6 weight percent nitromethane, and from about 31.0 to about 35.0 weight percent trans-1,2-dichloroethylene.
Claim 4
Dependent Claim
49 words
The azeotrope-like compositions of claim 1 wherein said compositions consist essentially of from about 63.5 to about 67.0 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.4 to about 2.6 weight percent isopropanol, from about 0.01 to about 0.6 weight percent nitromethane, and from about 31.5 to about 34.5 weight percent trans-1,2-dichloroethylene.
Claim 5
Dependent Claim
36 words
The azeotrope-like compositions of claim 1 wherein said compositions additionally include effective amounts of an inhibitor to inhibit decomposition of the solvent, react with undesirable decomposition products of the solvent and prevent corrosion of metal surfaces.
Claim 6
Dependent Claim
30 words
The azeotrope-like compositions of claim 4 wherein said inhibitor is selected from the group consisting of epoxy compounds, ethers, unsaturated compounds, acetals, ketals, ketones, tertiary amyl alcohol, esters, and amines.
Claim 7
Dependent Claim
18 words
A method of cleaning a solid surface comprising treating said surface with an azeotrope-like composition of claim 1.
Claim 8
Dependent Claim
76 words
Azeotrope-like compositions consisting essentially of from about 62.8 to about 68.4 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.0 to about 3.0 weight percent isopropanol, from about 0.01 to about 1.0 weight percent nitromethane, and from about 30.0 to about 36.0 weight percent of a mixture of trans-1,2-dichloroethylene and cis-1,2-dichloroethylene wherein said cis-1,2-dichloroethylene is present in an amount of up to about 5 weight percent of said mixture which boil at about 43.6° C. at 760 mm Hg.
Claim 9
Dependent Claim
76 words
Azeotrope-like compositions consisting essentially of from about 62.8 to about 68.4 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.0 to about 3.0 weight percent isopropanol, from about 0.01 to about 1.0 weight percent nitromethane, and from about 30.0 to about 36.0 weight percent of a mixture of trans-1,2-dichloroethylene and cis-1,2-dichloroethylene wherein said cis-1,2-dichloroethylene is present in an amount of up to about 5 weight percent of said mixture which boil at about 43.6° C. at 760 mm Hg.
Claim 10
Dependent Claim
73 words
The azeotrope-like compositions of claim 7 wherein said compositions consist essentially of from about 63.0 to about 67.5 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.2 to about 2.8 weight percent isopropanol, from about 0.01 to about 0.6 weight percent nitromethane, and from about 31.0 to about 35.0 weight percent of a mixture of trans-1,2-dichloroethylene and cis-1,2-dichloroethylene wherein said cis-1,2-dichloroethylene is present in an amount of up to about 5 weight percent of said mixture.
Claim 11
Dependent Claim
73 words
The azeotrope-like compositions of claim 7 wherein said compositions consist essentially of from about 63.5 to about 67.0 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, from about 1.4 to about 2.6 weight percent isopropanol, from about 0.01 to about 0.6 weight percent nitromethane, and from about 31.5 to about 34.5 weight percent of a mixture of trans-1,2-dichloroethylene and cis-1,2-dichloroethylene wherein said cis-1,2-dichloroethylene is present in an amount of up to about 5 weight percent of said mixture.
Claim 12
Dependent Claim
21 words
The azeotrope-like compositions of claim 7 wherein said mixture is about 95 weight percent trans-1,2-dichloroethylene and about 5 weight percent cis-1,2-dichloroethylene.
Claim 13
Dependent Claim
21 words
The azeotrope-like compositions of claim 8 wherein said mixture is about 95 weight percent trans-1,2-dichloroethylene and about 5 weight percent cis-1,2-dichloroethylene.
Claim 14
Dependent Claim
21 words
The azeotrope-like compositions of claim 9 wherein said mixture is about 95 weight percent trans-1,2-dichloroethylene and about 5 weight percent cis-1,2-dichloroethylene.
Claim 15
Dependent Claim
36 words
The azeotrope-like compositions of claim 7 wherein said composition additionally include effective amounts of an inhibitor to inhibit decomposition of the solvent, react with undesirable decomposition products of the solvent and prevent corrosion of metal surfaces.
Claim 16
Dependent Claim
30 words
The azeotrope-like compositions of claim 13 wherein said inhibitor is selected from the group consisting of epoxy compounds, ethers, unsaturated compounds, acetals, ketals, ketones, tertiary amyl alcohol esters, and amines.
Claim 17
Dependent Claim
18 words
A method of cleaning a solid surface comprising treating said surface with an azeotrope-like composition of claim 7.
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