Method for producing reaction gas containing (E)-1,2-difluoroethylene
US11155507B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2020 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Dec 22, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2205/126
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.