Composition for heat cycle system and heat cycle system
US-2017058172-A1 · Mar 2, 2017 · US
Method for producing reaction gas containing (E)-1,2-difluoroethylene
US11155507B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11155507-B2 |
| Application number | US-202017130421-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 22, 2020 |
| Priority date | Jun 7, 2019 |
| Publication date | Oct 26, 2021 |
| Grant date | Oct 26, 2021 |
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- Title
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- Abstract
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Abstract
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The present disclosure provides a method for producing a reaction gas containing R-1132(E) with selectivity higher than that of known methods. Specifically, the present disclosure provides a method for producing a reaction gas containing (E)-1,2-difluoroethylene (R-1132(E)), (1) the method comprising a step of subjecting a starting material gas containing one or more fluoromethanes selected from the group consisting of chlorodifluoromethane (R-22), difluoromethane (R-32), and fluoromethane (R-41) to a reaction that involves thermal decomposition to obtain the reaction gas, and (2) the starting material gas having a water vapor content of 1 volume % or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a reaction gas containing (E)-1,2-difluoroethylene (R-1132(E)), (1) the method comprising a step of subjecting a starting material gas containing 99 to 100 volume % of difluoromethane (R-32) to a reaction that involves thermal decomposition to obtain the reaction gas, and (2) the reaction being performed at a temperature of 750 to 1050° C. 2. The production method according to claim 1 , wherein the reaction is performed at a pressure of 0 to 0.6 MPaG. 3. The production method according to claim 1 , wherein the reaction is performed for a residence time of 0.03 to 11.380 seconds.
Assignees
Inventors
Classifications
All components of a mixture being fluoro compounds · CPC title
Hydrocarbons · CPC title
Unsaturated fluorinated hydrocarbons · CPC title
of only halogenated hydrocarbons · CPC title
- C09K5/045Primary
containing only fluorine as halogen · CPC title
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- What does patent US11155507B2 cover?
- The present disclosure provides a method for producing a reaction gas containing R-1132(E) with selectivity higher than that of known methods. Specifically, the present disclosure provides a method for producing a reaction gas containing (E)-1,2-difluoroethylene (R-1132(E)), (1) the method comprising a step of subjecting a starting material gas containing one or more fluoromethanes selected fro…
- Who is the assignee on this patent?
- Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification C09K5/045. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 26 2021 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).