Azeotrope or azeotrope-like compositions of trifluoroiodomethane (cf3i) and hexafluoropropene (hfp)
US-2020115303-A1 · Apr 16, 2020 · US
Azeotrope or azeotrope-like compositions of trifluoroidomethane (CF3I) and 1,1,1,3,3,3-hexafluoropropane (HFC-236fa)
US11318338B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11318338-B2 |
| Application number | US-201916571936-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 16, 2019 |
| Priority date | Oct 15, 2018 |
| Publication date | May 3, 2022 |
| Grant date | May 3, 2022 |
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Abstract
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The present disclosure provides azeotrope or azeotrope-like compositions including trifluoroiodomethane (CF3I) and 1,1,1,3,3,3-hexafluoropropane (HFC-236fa), and a method of forming an azeotrope or azeotrope-like composition comprising the step of combining 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and trifluoroiodomethane (CF3I) to form an azeotrope or azeotrope-like comprising 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and trifluoroiodomethane (CF3I) having a boiling point of about −22.70° C.±0.30° C. at a pressure of about 14.30 psia±0.30 psia.
First claim
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What is claimed is: 1. A composition comprising an azeotrope composition consisting essentially of from 0.5 wt. % to 10 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and from 90 wt. % to 99.5 wt. % trifluoroiodomethane (CF 3 I), wherein the azeotrope composition has a boiling point of about −22.70° C.±0.30° C. at a pressure of about 14.30 psia±0.30 psia. 2. The composition of claim 1 , wherein the azeotrope composition consists essentially of from 2 wt. % to 10 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and from 90 wt. % to 98 wt. % trifluoroiodomethane (CF 3 I). 3. The composition of claim 1 , wherein the azeotrope composition consists essentially of from about 5 wt. % to about 6 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and from about 94 wt. % to about 95 wt. % trifluoroiodomethane (CF 3 I). 4. The composition of claim 1 , wherein the azeotrope composition consist essentially of about 5.57 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and about 94.43 wt. % trifluoroiodomethane (CF 3 I). 5. The composition of claim 1 , wherein the azeotrope composition consists of from 0.5 wt. % to 10 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and from 90 wt. % to 99.5 wt. % trifluoroiodomethane (CF 3 I). 6. The composition of claim 1 , wherein the azeotrope composition consists of from 2 wt. % 10 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and from 90 wt. % to 98 wt. % trifluoroiodomethane (CF 3 I). 7. The composition of claim 1 , wherein the azeotrope or azeotrope-like composition consists of about 5.57 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and about 94.43 wt. % trifluoroiodomethane (CF 3 I). 8. A method of forming an azeotrope composition comprising the step of combining from 0.5 wt. % to 10 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and from 90 wt. % to 99.5 wt. % trifluoroiodomethane (CF 3 I) to form an azeotrope composition consisting essentially of 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and trifluoroiodomethane (CF 3 I) having a boiling point of about −22.70° C.±0.30° C. at a pressure of about 14.30 psia±0.30 psia. 9. The composition of claim 8 , wherein the azeotrope composition consists of from 2 wt. % to 10 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and from 90 wt. % to 98 wt. % trifluoroiodomethane (CF 3 I). 10. The method of claim 8 , wherein the combining step comprises combining about 5.57 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and about 94.43 wt. % trifluoroiodomethane (CF 3 I). 11. A method of separating 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and trifluoroiodomethane (CF 3 I) from a primary composition comprising 1,1,1,3,3,3-hexafluoropropane (HFC-236fa), trifluoroiodomethane (CF 3 I) and at least one impurity, including the steps of: forming, within the primary composition, a secondary composition which is an azeotrope composition consisting essentially of from 0.5 wt. % to 10 wt. % 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and from 90 wt. % to 99.5 wt. % trifluoroiodomethane (CF 3 I) having a boiling point of about −22.70° C.±0.30° C. at a pressure of about 14.30 psia±0.30 psia; and separating the secondary composition from the primary composition and the at least one impurity.
Assignees
Inventors
Classifications
Perhalogenated saturated hydrocarbons, e.g. F3C-CF3 · CPC title
Halogenated saturated hydrocarbons, e.g. H3C-CF3 · CPC title
Halogenated hydrocarbons · CPC title
The mixture being azeotropic · CPC title
All components of a mixture being fluoro compounds · CPC title
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- What does patent US11318338B2 cover?
- The present disclosure provides azeotrope or azeotrope-like compositions including trifluoroiodomethane (CF3I) and 1,1,1,3,3,3-hexafluoropropane (HFC-236fa), and a method of forming an azeotrope or azeotrope-like composition comprising the step of combining 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) and trifluoroiodomethane (CF3I) to form an azeotrope or azeotrope-like comprising 1,1,1,3,3,3-hex…
- Who is the assignee on this patent?
- Honeywell Int Inc
- What technology area does this patent fall under?
- Primary CPC classification C09K3/30. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 03 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).