Viscosity control for reduced fluorosurfactant aqueous fluoropolymer dispersions by the addition of cationic surfactants
US8329836B2 · kind B2 · utility
2Cited by
16References
16Claims
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Key dates
| Filing date | Jul 13, 2009 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Jun 24, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/19
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A stabilized aqueous fluoropolymer dispersion comprising fluoropolymer particles, wherein the dispersion contains less that about 300 ppm fluorosurfactant based on the weight of the dispersion and a cationic surfactant. The cationic surfactant aids in reducing the viscosity of the dispersion and preferred cationic surfactants are volatile in coating or film casting operations involving drying and sintering of the dispersion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.