Method for producing aqueous perfluoroelastomer dispersion, and method for producing perfluoroelastomer
US10227430B2 · kind B2 · utility
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Key dates
| Filing date | Feb 16, 2015 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Feb 16, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F216/1408
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aqueous perfluoroelastomer dispersion and method for producing a perfluoroelastomer using a specific fluorosurfactant and capable of achieving a sufficient number of particles and a sufficient polymerization rate. The method includes providing an aqueous dispersion containing perfluoroelastomer particles by emulsion-polymerizing a perfluoromonomer in an aqueous medium in the presence of a specific fluorosurfactant in an amount of 2 parts by mass or more for 100 parts by mass of the aqueous medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.