HYDROGENATED NITRILE RUBBER COMPOSITION
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United States of America Patent
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Issued Date -
Jul 10, 2014
app pub date -
Aug 3, 2012
filing date -
Sep 13, 2011
priority date (Note) -
Abandoned
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Abstract
Disclosed is a hydrogenated nitrile rubber composition comprising 100 parts by weight of hydrogenated nitrile rubber having a bound acrylonitrile content of 31 to 50% and an iodine value of 30 mg/100 mg or less, 30 to 300 parts by weight of carbon black having a particle size of 61 nm or more and/or other filler, 0.5 to 30 parts by weight of a polyfunctional unsaturated compound cocrosslinking agent, and 1 to 10 parts by weight of an organic peroxide. The hydrogenated nitrile rubber composition has excellent roll processability and can be suitably used as a vulcanization-molding material for a cup gasket or bellows having excellent LLC resistance used in a water pump mechanical seal.
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