Method for producing 1,1-dichloro-3,3,3-trifluoropropane
US9676688B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Dec 6, 2016 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Dec 6, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B61/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
To provide a method for obtaining 1,1-dichloro-3,3,3-trifluoropropane by reacting 1,1-difluoroethylene with dichlorofluoromethane, which suppresses the production of chloroform as a by-product and achieves a product having a high R-243fa concentration. This method is characterized by obtaining 1,1-dichloro-3,3,3-trifluoropropane by reacting 1,1-difluoroethylene with dichlorofluoromethane in the presence of trifluoromethane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.