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US 9,790,347 B2Granted
Composite particles including a fluoropolymer, methods of making, and articles including the same
Assignee3M Innovation Properties Company
InventorsStephen E. Amos, Carlos A. Barrios
Life of this patent
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Abstract
A composite particle includes a discrete, hollow, ceramic spheroid and a fluoropolymer layer disposed thereon. The fluoropolymer is a homopolymer or copolymer of a perfluoroalkyl vinyl ether; a perfluoroalkoxy vinyl ether; at least one fluoroolefin independently represented by formula C(R)2═CF—Rf, wherein Rf is fluorine or a perfluoroalkyl having from 1 to 8 carbon atoms and R is hydrogen, fluorine, or chlorine; or a combination thereof. Methods of making the composite particles, composite materials, and articles including them are also disclosed.
Claims20
A composite particle comprising:
- a discrete, hollow, ceramic spheroid, and
- a fluoropolymer layer disposed on the discrete, hollow, ceramic spheroid, wherein the fluoropolymer is a homopolymer or copolymer of a perfluoroalkyl vinyl ether;
- a perfluoroalkoxy vinyl ether;
- at least one fluoroolefin independently represented by formula C(R)2═CF—Rf, wherein Rf is fluorine or a perfluoroalkyl having from 1 to 8 carbon atoms and R is hydrogen, fluorine, or chlorine;
- or a combination thereof.
2 more elements
Dependencies are inferred from the claim text.