Nitrile rubber-based composition
AssigneeNok Corporation
InventorShunsuke Abe
Life of this patent
Estimating the term…
Abstract
A nitrile rubber-based composition comprising 1,000 to 2,500 parts by weight of a magnetic powder or silylated magnetic powder having a compressed density of 3.4 to 3.7 g/cm3, 0.5 to 20 parts by weight of alkoxyalkylsilane, and 8 to 40 parts by weight of a plasticizer, based on 100 parts by weight of nitrile rubber, hydrogenated nitrile rubber, or blend rubber thereof. The nitrile rubber-based composition that does not cause deterioration in roll processability and in adhesion between an adhesive applied to a metal plate and the rubber, even when a magnetic powder is added at a ratio as high as 1,000 parts by weight or more based on 100 parts by weight of nitrile rubber, hydrogenated nitrile rubber, or blend rubber thereof.
Claims13
A nitrile rubber-based composition comprising 2,000 to 2,500 parts by weight of a magnetic powder or silylated magnetic powder having a compressed density of 3.4 to 3.7 g/cm3, 10 to 20 parts by weight of alkoxyalkylsilane, and & 30 to 40 parts by weight of a plasticizer, based on 100 parts by weight of nitrile rubber, hydrogenated nitrile rubber, or blend rubber thereof.
A method for producing a rubber magnet for sensor, comprising vulcanizing a nitrile rubber-based composition in a mold to which a magnetic field is applied, wherein the composition comprises 2,000 to 2,500 parts by weight of a magnetic powder or silylated magnetic powder having a compressed density of 3.4 to 3.7 g/cm3, 10 to 20 parts by weight of alkoxyalkylsilane, and 30 to 40 parts by weight of a plasticizer, based on 100 parts by weight of nitrile rubber, hydrogenated nitrile rubber, or blend rubber thereof.
Dependencies are inferred from the claim text.