US5098595A
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Ternary azeotropic compositions of 1,1,1,2,3,3-hexafluoro-3-methoxypropane and cis-1,2-dichloroethylene with methanol or ethanol or isopropanol or n-propanol
Assignee: EIDP Inc
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Filing: 1990-07-23
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Granted: 1992-03-24
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Expires: 2010-07-23
Abstract
Abstract Azeotropic mixtures of 1,1,1,2,3,3-hexafluoro-3-methoxypropane with cis 1,2-dichloroethylene (c-CFC-1130) and methanol or ethanol or isopropanol or n-propanol, the azeotropic mixtures being useful in solvent cleaning applications.
Inventors
- 👤 Abid N. Merchant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:54
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/50; C11D7/5036; C11D7/504; C11D7/5063; Y; Y10; Y10S; Y10S264/00; Y10S264/05
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
123 words
A composition consisting essentially of an azeotrope of (a) about 62-72% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 22-32% by weight cis-1,2-dichloroethylene and about 4-8% by weight methanol having a boiling point of about 47.1° C., at substantially atmospheric pressure; about 67-77% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 19-29% by weight cis-1,2-dichloroethylene and about 2-6% by weight ethanol having a boiling point of about 49.8° C., at substantially atmospheric pressure; (c) about 67-77% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 21-31% by weight cis-1,2-dichloroethylene and about 1-3% by weight isopropanol having a boiling point of about 51.5° C., at substantially atmospheric pressure; or about 66-76% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 24-34% by weight cis-1,2-dichloroethylene and about 0.01-2.0% by weight n-propanol having a boiling point of about 50.0° C., at substantially atmospheric pressure.
Claim 2
Dependent Claim
123 words
A composition consisting essentially of an azeotrope of (a) about 62-72% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 22-32% by weight cis-1,2-dichloroethylene and about 4-8% by weight methanol having a boiling point of about 47.1° C., at substantially atmospheric pressure; about 67-77% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 19-29% by weight cis-1,2-dichloroethylene and about 2-6% by weight ethanol having a boiling point of about 49.8° C., at substantially atmospheric pressure; (c) about 67-77% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 21-31% by weight cis-1,2-dichloroethylene and about 1-3% by weight isopropanol having a boiling point of about 51.5° C., at substantially atmospheric pressure; or about 66-76% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 24-34% by weight cis-1,2-dichloroethylene and about 0.01-2.0% by weight n-propanol having a boiling point of about 50.0° C., at substantially atmospheric pressure.
Claim 3
Dependent Claim
25 words
The azeotropic composition of claim 1, consisting essentially of about 62-72 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 22-32 weight percent cis-1,2-dichloroethylene and about 4-8 weight percent methanol.
Claim 4
Dependent Claim
25 words
The azeotropic composition of claim 1, consisting essentially of about 67-77 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 19-29 weight percent cis-1,2-dichloroethylene and about 2-6 weight percent ethanol.
Claim 5
Dependent Claim
25 words
The azeotropic composition of claim 1, consisting essentially of about 67-77 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 21-31 weight percent cis-1,2-dichloroethylene and about 1-3 weight percent isopropanol.
Claim 6
Dependent Claim
25 words
The azeotropic composition of claim 1, consisting essentially of about 66-76 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 24-34 weight percent cis-1,2-dichloroethylene and about 0.01-2.0 weight percent n-propanol.
Claim 7
Dependent Claim
25 words
The azeotropic composition of claim 1, consisting essentially of about 67.0 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 26.8 weight percent cis-1,2-dichloroethylene and about 6.2 weight percent methanol.
Claim 8
Dependent Claim
25 words
The azeotropic composition of claim 1, consisting essentially of about 72.0 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 23.6 weight percent cis-1,2-dichloroethylene and about 4.4 weight percent ethanol.
Claim 9
Dependent Claim
24 words
The azeotropic composition of claim 1, consisting essentially of about 72.2 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 26.0 weight percent cis-1,2-dichloroethylene and about 1.8 percent isopropanol.
Claim 10
Dependent Claim
25 words
The azeotropic composition of claim 1, consisting essentially of about 71.0 weight percent 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 28.8 weight percent cis-1,2-dichloroethylene and about 0.2 weight percent isopropanol.
Claim 11
Dependent Claim
76 words
The azeotropic composition of claim 1, consisting essentially of (a) about 65-69% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 25-29% by weight cis-1,2-dichloroethylene and about 5-7% by weight methanol; (b) about 70-74% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 22-26% by weight cis-1,2-dichloroethylene and about 3-5% by weight ethanol; (c) about 70-74% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 24-27% by weight cis-1,2-dichloroethylene and about 1.5-2.5% by weight isopropanol; or (d) about 69-73% 1,1,1,2,3,3-hexafluoro-3-methoxypropane, about 27-31% by weight cis-1,2-dichloroethylene and about 0.1-1.0% by weight n-propanol.
Claim 12
Dependent Claim
19 words
A process for cleaning a solid surface which comprises treating said surface with the azeotropic composition of claim 1.
Claim 13
Dependent Claim
19 words
The process of claim 11, wherein the solid surface is a printed circuit board contaminated with flux and flux-residues.
Claim 14
Dependent Claim
12 words
The process of claim 12, wherein the solid surface is a metal.
Claim 15
Dependent Claim
22 words
A process for producing refrigeration which comprises evaporating a mixture of claim 1 in the vicinity of a body to be cooled.
Claim 16
Dependent Claim
22 words
A process for producing heat which comprises condensing a composition of claim 1 in the vicinity of a body to be heated.
Claim 17
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.
Claim 18
Dependent Claim
22 words
In an aerosol composition comprising a propellant and an active agent, the improvement wherein the propellant is a composition of claim 1.
Claim 19
Dependent Claim
28 words
A process for preparing aerosol formulations comprising condensing an active ingredient in an aerosol container with an effective amount of the composition of claim 1 as a propellant.
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