Claims
- 1. A coating or casting composition, comprisinga granular first fluoropolymer resin and a dispersion second fluoropolymer resin in a first carrier liquid, wherein the granular first fluoropolymer is present in an amount of between about 5 weight % and about 60 weight % of the resin mixture on a solids basis.
- 2. The composition of claim 1, whereinthe granular first fluoropolymer and the dispersion second fluoropolymer are the same or different homofluoropolymer, copolymer, or terpolymer, or mixtures thereof, wherein the homofluoropolymer, copolymer, or terpolymer are derived from monomers selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, perfluoroalkylvinylether, perfluoroctylvinyl ether, and ethylene.
- 3. The composition of claim 2, whereinthe granular first fluoropolymer and the second fluoropolymer have the same chemical composition.
- 4. The composition of claim 3, whereinthe granular first fluoropolymer and the dispersion second fluoropolymer are poly(tetrafluoroethylene).
- 5. The composition of claim 1, whereinthe composition further comprises a particulate filler.
- 6. The composition of claim 5, whereinthe particulate filler is at least one of glass particles, ceramic particles, metallic particles, carbon particles mineral particles, or polymeric particles selected from the group consisting of polyetherimides, polyethersulfone polymers, thermoplastic and thermoset polyimides, polyketone polymer, polyetheretherketone polymers, polyphenylenesulfide polymers, and polysulfones.
- 7. The composition of claim 6, whereinthe particulate filler is amorphous fused silica, glass, titania, calcium titanate, strontium titanate or barium titanate.
- 8. The composition of claim 1, further comprisinga viscosity modifier, a surfactant, or a combination thereof.
- 9. A coating or casting composition, comprisinga mixture of a granular first fluoropolymer resin and a dispersion second fluoropolymer resin in a first carrier liquid, wherein the granular first fluoropolymer is present in an amount of between about 5 weight % and about 60 weight % of the resin mixture on a solids basis; and a particulate filler, wherein of the combined first and second fluoropolymer and particulate filler in the composition, the first and second fluoropolymer together comprise from about 5 volume % to about 85 volume % and the particulate filler comprises from about 15 volume % to about 95 volume %.
- 10. The composition of claim 9, whereinthe granular first fluoropolymer and the dispersion second fluoropolymer are the same or different homofluoropolymer, copolymer, or terpolymer, or mixtures thereof, wherein the homofluoropolymer, copolymer, or terpolymer are derived from monomers selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, perfluoroalkylvinylether, perfluorooctylvinyl ether, and ethylene.
- 11. The composition of claim 9, whereinthe granular first fluoropolymer and the second fluoropolymer have the same chemical composition.
- 12. The composition of claim 9, whereinthe granular first fluoropolymer and the dispersion second fluoropolymer are poly(tetrafluoroethylene).
- 13. The composition of claim 9, whereinthe particulate filler is at least one of glass particles, ceramic particles metallic particles, carbon particles mineral particles, or polymeric particles selected from the group consisting of polyetherimides, polyethersulfone polymer, thermoplastic and thermoset polyimides, polyketone polymer, polyetheretherketone polymers, polyphenylenesulfide polymer, and polysulfones.
- 14. The composition of claim 9, whereinthe particulate filler is amorphous fused silica, glass, titania, calcium titanate, strontium titanate or barium titanate.
- 15. The composition of claim 9, whereinthe composition is a casting composition, and of the combined first and second fluoropolymer and particulate filler in the casting composition, the first and second fluoropolymer together comprise from about 30 volume % to about 70 volume % and the particulate filler comprises from about 30 volume % to about 70 volume %.
- 16. The composition of claim 9, whereinthe composition is a casting composition, and of the combined first and second fluoropolymer and particulate filler in the casting composition, the first and second fluoropolymer together comprises from about 35 volume % to about 60 volume % and the particulate filler comprises from about 40 volume % to about 65 volume %.
- 17. The composition of claim 9, further comprisinga viscosity modifier, a surfactant, or a combination thereof.
CROSS REFERENCE TO RELATED APPLICATION
This application is a divisional of U.S. application Ser. No. 09/023,273, filed Feb. 13, 1998, now U.S. Pat. No. 6,218,015, which is incorporated by reference herein.
US Referenced Citations (11)
Foreign Referenced Citations (3)
Number |
Date |
Country |
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Oct 1990 |
EP |
WO9736952 |
Oct 1997 |
WO |
WO 9736954 |
Oct 1997 |
WO |