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US 2026/0085181 A1Published application
Powder composition
OwnerBrigette Dighelloinventor
Life of this patent
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Abstract
A composition can include a first powder including a first fluoropolymer including polytetrafluoroethylene and/or a first copolymer of tetrafluoroethylene and non-tetrafluoroethylene and can include a second powder including a second fluoropolymer including polytetrafluoroethylene and/or a second copolymer of tetrafluoroethylene and non-tetrafluoroethylene. A method of forming a diaphragm can use the composition as a resin. The method can include preforming, sintering, coining, quenching, and stabilizing the resin. For example, the diaphragm can be for use in a diaphragm pump.
Claims21
A composition, comprising:
- a first powder including:
- a first particle set of a first fluoropolymer of an average particle diameter from about 475 μm to about 625 μm,
- less than about 1 wt % perfluoroether and/or perfluoro(propyl vinyl ether) (PPVE), and
- less than about 1 wt % of elements other than carbon and fluorine,
- wherein the first fluoropolymer comprises polytetrafluoroethylene and/or a first copolymer of tetrafluoroethylene comonomer and less than about 1 wt % first non-tetrafluoroethylene comonomer, and
- wherein the first powder has a bulk density from about 600 g/L to about 800 g/L, and
- a second powder including:
- a second particle set of a second fluoropolymer of an average particle diameter from about 400 μm to about 550 μm,
- less than about 1 wt % perfluoroether and/or perfluoro(propyl vinyl ether) (PPVE), and
- less than about 1 wt % of elements other than carbon and fluorine,
- wherein the second fluoropolymer comprises polytetrafluoroethylene and/or a second copolymer of tetrafluoroethylene comonomer and less than about 1 wt % second non-tetrafluoroethylene comonomer, and
- wherein the second powder has a bulk density from about 600 g/L to about 800 g/L.
9 more elements
Dependencies are inferred from the claim text.