US5039445A
Expired / Lapsed
US
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Ternary azeotropic compositions of N-perfluorobutylethylene and cis-1,2-dichloroethylene with methanol or ethanol or isopropanol
Assignee: EIDP Inc
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Filing: 1990-10-03
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Granted: 1991-08-13
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Expires: 2010-10-03
Abstract
Abstract Azeotropic mixtures of n-perfluorobutylethylene and cis-1,2-dichloroethylene with methanol or ethanol or isopropanol, the azeotropic mixtures being useful as: cleaning agents, blowing agents, refrigerants, aerosol propellants, heat transfer media and power cycle working fluids.
Inventors
- 👤 Abid N. Merchant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:47
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/149; C09K3/00; C09K3/30; C08J2207/00; C08J2207/04; C09K2205/00; C09K2205/10; C09K2205/12; C09K2205/122; C09K2205/126; C09K2205/128
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
119 words
An azeotropic composition consisting essentially of: (a) about 67-77 weight percent n-perfluorobutylethylene, about 20-30 weight percent cis-1,2-dichloroethylene, and about 1-5 weight percent methanol, wherein the composition has a boiling point of about 43.8° C. when the pressure is adjusted to substantially atmospheric pressure; or (b) about 70-80 weight percent n-perfluorobutylethylene, about 18-28 weight percent cis-1,2-dichloroethylene, and about 1-5 weight percent ethanol, wherein the composition has a boiling point of about 48.3°60 C. when the pressure is adjusted to substantially atmospheric pressure; or (c) about 80-90 weight percent n-perfluorobutylethylene, about 7-17 weight percent cis-1,2-dichloroethylene, and about 1-5 weight percent isopropanol, wherein the composition has a boiling point of about 47.3° C. when the pressure is adjusted to substantially atmospheric pressure.
Claim 2
Dependent Claim
119 words
An azeotropic composition consisting essentially of: (a) about 67-77 weight percent n-perfluorobutylethylene, about 20-30 weight percent cis-1,2-dichloroethylene, and about 1-5 weight percent methanol, wherein the composition has a boiling point of about 43.8° C. when the pressure is adjusted to substantially atmospheric pressure; or (b) about 70-80 weight percent n-perfluorobutylethylene, about 18-28 weight percent cis-1,2-dichloroethylene, and about 1-5 weight percent ethanol, wherein the composition has a boiling point of about 48.3°60 C. when the pressure is adjusted to substantially atmospheric pressure; or (c) about 80-90 weight percent n-perfluorobutylethylene, about 7-17 weight percent cis-1,2-dichloroethylene, and about 1-5 weight percent isopropanol, wherein the composition has a boiling point of about 47.3° C. when the pressure is adjusted to substantially atmospheric pressure.
Claim 3
Dependent Claim
28 words
An azeotropic composition of claim 1, wherein the composition consists essentially of about 67-77 weight percent n-perfluorobutylethylene, about 20-30 weight percent cis-1,2-dichloroethylene and about 1-5 weight percent methanol.
Claim 4
Dependent Claim
29 words
An azeotropic composition of claim 2, wherein the composition consists essentially of about 72.0 weight percent n-perfluorobutylethylene and about 24.6 weight percent cis-1,2-dichloroethylene and about 3.4 weight percent methanol.
Claim 5
Dependent Claim
29 words
An azeotropic composition of claim 1, wherein the composition consists essentially of about 70-80 weight percent n-perfluorobutylethylene and about 18-28 weight percent cis-1,2-dichloroethylene and about 1-5 weight percent ethanol.
Claim 6
Dependent Claim
29 words
An azeotropic composition of claim 4, wherein the composition consists essentially of about 74.5 weight percent n-perfluorobutylethylene and about 22.7 weight percent cis-1,2-dichloroethylene and about 2.8 weight percent ethanol.
Claim 7
Dependent Claim
28 words
An azeotropic composition of claim 1, wherein the composition consists essentially of about 80-90 weight percent n-perfluorobutylethylene, about 7-17 weight percent cis-1,2-dichloroethylene and about 1-5 weight percent isopropanol.
Claim 8
Dependent Claim
28 words
An azeotropic composition of claim 6, wherein the composition consists essentially of about 84.4 weight percent n-perfluorobutylethylene, about 12.4 weight percent cis-1,2-dichloroethylene and about 3.2 weight percent isopropanol.
Claim 9
Dependent Claim
19 words
A process for cleaning a solid surface which comprises treating said surface with an azeotropic composition of claim 1.
Claim 10
Dependent Claim
19 words
A process of claim 8, wherein the solid surface is a printed circuit board contaminated with flux and flux-residues.
Claim 11
Dependent Claim
17 words
A process of claim 9, wherein the solid surface is a metal, a glass or a plastic.
Claim 12
Dependent Claim
23 words
A process for producing refrigeration which comprises evaporating an azeotropic compositions of claim 1 in the vicinity of a body to be cooled.
Claim 13
Dependent Claim
23 words
A process for producing heat which comprises condensing an azeotropic composition of claim 1 in the vicinity of a body to be heated.
Claim 14
Dependent Claim
28 words
In a process for preparing a polymer foam comprising expanding a polymer with a blowing agent, the improvement wherein the blowing agent is a composition of claim 1.
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