Method for recovering fluorine-containing ether
US9475744B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2014 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Jan 20, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F214/282
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide a method for recovering a fluorine-containing ether capable of recovering a fluorine-containing ether used for producing a fluoropolymer, in higher recovery yield and in a shorter time. The present invention relates to a method for recovering a fluorine-containing ether, including the steps of: producing a wet fluoropolymer by suspension polymerization, solution polymerization, or bulk polymerization in the presence of at least a specific fluorine-containing ether; vaporizing and discharging vaporizable substances including the fluorine-containing ether by heating the wet fluoropolymer in a container; and transferring the vaporizable substances in the vaporized state to a cooling means to cool the vaporizable substances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.