Aqueous tetrafluoroethylene polymer dispersion, process for producing the same, tetrafluoroethylene polymer powder, and molded tetrafluoroethylene polymer
US9096701B2 · kind B2 · utility
3Cited by
8References
3Claims
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Key dates
| Filing date | Aug 30, 2012 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Aug 30, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F14/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a tetrafluoroethylene polymer aqueous dispersion obtained by carrying out a TFE polymerization in an aqueous medium in the presence of a fluorovinyl group-containing emulsifier, wherein the TFE polymer aqueous dispersion contains a particle comprising a TFE polymer dispersed in the aqueous medium, the fluorovinyl group-containing emulsifier comprises a fluorovinyl group-containing compound, and the TFE polymer aqueous dispersion has a fluorine-containing surfactant content of not higher than 1000 ppm by mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.