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US 12,305,107 B2Granted
Perfluoroelastomer composition, cross-linked perfluoroelastomer and molded article
AssigneeNichias Corporation
InventorsChisato Hasegawa, Kojiro Otani
Life of this patent
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Abstract
A composition comprising a perfluoroelastomer, carbon black in an amount of 55 to 75 parts by weight per 100 parts by weight of the perfluoroelastomer, and a crosslinking agent represented by the following formula (1): wherein in the formula (1), A is a single bond, —O—, an alkylene group, or a fluoroalkylene group; R1, R2, and R3 are independently a hydrogen atom, a fluorine atom, an alkyl group, or a fluoroalkyl group; and provided that at least one of R1, R2, and R3 is a fluorine atom or a fluoroalkyl group.
Claims14
A composition comprising:
- a perfluoroelastomer,
- carbon black in an amount of 55 to 75 parts by weight per 100 parts by weight of the perfluoroelastomer,
- a crosslinking agent represented by the following formula (1), and
- a fluorine plasticizer in an amount of 1 to 5 parts by weight per 100 parts by weight of the perfluoroelastomer:
- wherein in the formula (1), A is a single bond, —O—, an alkylene group, or a fluoroalkylene group;
- R1, R2, and R3 are independently a hydrogen atom, a fluorine atom, an alkyl group, or a fluoroalkyl group;
- and provided that at least one of R1, R2, and R3 is a fluorine atom or a fluoroalkyl group.
4 more elements
Dependencies are inferred from the claim text.