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US 12,180,315 B2Granted
Elastomer composition and sealing material
AssigneeValqua, Ltd.
InventorsNaoki Osumi, Hirohisa Imada, Tomomitsu Mochizuki
Life of this patent
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Abstract
Provided are an elastomer composition including a first fluoroelastomer that is a copolymer of tetrafluoroethylene and perfluoro (alkoxyvinyl ether) and a second fluoroelastomer different from the first fluoroelastomer, and a sealing material including a crosslinked product of the elastomer composition.
Claims2
An elastomer composition consisting of:
- a first fluoroelastomer being a copolymer containing a constituent unit derived from tetrafluoroethylene, one or more constituent units derived from perfluoro (alkoxyvinyl ether), and a constituent derived from a crosslinking site monomer;
- a second fluoroelastomer different from the first fluoroelastomer, a peroxide crosslinking agent and a co-crosslinking agent, and a filler, or consisting of two or more of the first fluoroelastomers, the peroxide crosslinking agent and the co-crosslinking agent, and the filler,
- wherein the second fluoroelastomer is a perfluoroelastomer, and the second fluoroelastomer is a copolymer containing the constituent unit derived from tetrafluoroethylene, one or more constituent units derived from perfluoro (alkyl vinyl ether), and a constituent unit derived from a crosslinking site monomer,
- wherein the co-crosslinking agent is triallyl isocyanurate, and
- wherein the first fluoroelastomer and the second fluoroelastomer are contained in a mass ratio of 10:90 to 90:10.
2 more elements
Dependencies are inferred from the claim text.