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US 2020/0399432 A1Published application
Non-aqueous dispersion
AssigneeDaikin Industries, Ltd.
InventorsHaruna MATSUMOTO, Shinji MURAKAMI
Life of this patent
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Abstract
Provided is a highly stable non-aqueous dispersion even without surfactants. The present invention relates to a non-aqueous dispersion including a fluoropolymer and a non-aqueous solvent, the fluoropolymer in the non-aqueous dispersion having an average dispersed particle size of smaller than 1.0 μm, the fluoropolymer being present in an amount of 5 to 45% by mass, the non-aqueous solvent having a surface tension of 30 mN/m or lower, the non-aqueous dispersion containing a surfactant in an amount of less than 0.1% by mass relative to the fluoropolymer.
Claims4
A non-aqueous dispersion comprising:
- a fluoropolymer;
- and
- a non-aqueous solvent,
- the fluoropolymer in the non-aqueous dispersion having an average dispersed particle size of smaller than 1.0 the fluoropolymer being present in an amount of 5 to 45% by mass,
- the non-aqueous solvent having a surface tension of 30 mN/m or lower,
- the non-aqueous dispersion containing a surfactant in an amount of less than 0.1% by mass relative to the fluoropolymer,
- wherein the fluoropolymer is a perfluoropolymer,
- wherein the perfluoropolymer is at least one selected from the group consisting of polytetrafluoroethylene (PTFE), a tetrafluoroethylene (TFE)/perfluoro(alkyl vinyl ether) (PAVE) copolymer (PFA), and a TFE/hexafluoropropylene (HFP) copolymer (FEP),
- wherein the PTFE has a melting point of 324° C. to 333° C.,
- wherein the PFA has a melting point of 280° C. to 322° C.,
- wherein the FEP has a melting point of 150° C. to 320° C.
8 more elements
3-4. (canceled)
Dependencies are inferred from the claim text.