High-purity 1,1,1,2,3,3-hexafluoropropane, method for producing same and use thereof
US-2022098132-A1 · Mar 31, 2022 · US
Azeotropic or azeotropic-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane, 1-chloro-2,2-difluoroethane, or 1,2-dichloro-1-fluoroethane
US11826596B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11826596-B2 |
| Application number | US-202117496112-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 7, 2021 |
| Priority date | Apr 10, 2019 |
| Publication date | Nov 28, 2023 |
| Grant date | Nov 28, 2023 |
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- Title
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Abstract
Official abstract text for this publication.
The present disclosure provides a novel azeotropic or azeotrope-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane (HFC-143), 1-chloro-2,2-difluoroethane (HCFC-142), or 1,2-dichloro-1-fluoroethane (HCFC-141); and a separation method using the composition.An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HFC-143. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HCFC-142. An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HCFC-141. A separation method of a composition comprising hydrogen fluoride and at least one member selected from the group consisting of HFC-143, HCFC-142, and HCFC-141.
First claim
Opening claim text (preview).
The invention claimed is: 1. An azeotropic or azeotrope-like composition comprising 1,1,2-trifluoroethane (HFC-143) and hydrogen fluoride, wherein the HFC-143 is present in an amount of 40 mass % or more to less than 100 mass %, based on the total amount of the HFC-143 and the hydrogen fluoride defined as 100 mass %.
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Classifications
by distillation · CPC title
- C07C19/12Primary
having two carbon atoms · CPC title
- A62D1/0057Primary
Polyhaloalkanes (A62D1/005 takes precedence) · CPC title
by two or more of a fractionation, separation or rectification step · CPC title
- B01D3/36Primary
Azeotropic distillation · CPC title
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- What does patent US11826596B2 cover?
- The present disclosure provides a novel azeotropic or azeotrope-like composition comprising hydrogen fluoride and 1,1,2-trifluoroethane (HFC-143), 1-chloro-2,2-difluoroethane (HCFC-142), or 1,2-dichloro-1-fluoroethane (HCFC-141); and a separation method using the composition.An azeotropic or azeotrope-like composition comprising hydrogen fluoride and HFC-143. An azeotropic or azeotrope-like com…
- Who is the assignee on this patent?
- Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification C07C19/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 28 2023 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).