The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2026
Filed:
Nov. 04, 2021
Nok Corporation, Tokyo, JP;
Shunsuke Abe, Kanagawa, JP;
NOK CORPORATION, Tokyo, JP;
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/cm, 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.