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US 12,110,348 B2Granted
Carboxyl group-containing nitrile rubber
AssigneeZeon Corporation
InventorsSayaka Inoue, Kentaro Ono
Life of this patent
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Abstract
A carboxyl group-containing nitrile rubber having an iodine value of 120 or less, wherein the content of sodium is 1500 ppm by weight or less, the total content of calcium, magnesium, and aluminum is 350 ppm by weight or less, and the storage elastic modulus at 140° C. is 350 kPa or more.
Claims8
A carboxyl group-containing nitrile rubber having an iodine value of 120 or less, wherein
- the carboxyl group-containing nitrile rubber does not contain a polymer flocculant,
- a content of sodium is 1500 ppm by weight or less,
- a total content of calcium, magnesium, and aluminum is 350 ppm by weight or less, and
- a storage elastic modulus at 140° C. is 350 kPa or more.
1 more element
Dependencies are inferred from the claim text.