CROSSLINKER MASTERBATCH FOR HYDROGENATED NITRILE RUBBER HYDROGENATED NITRILE RUBBER COMPOSITION AND CROSS-LINKED HYDROGENATED NITRILE RUBBER MOLDED ARTICLE

摘要

Provided are an organic peroxide master batch for hydrogenated nitrile rubber, which is capable of resolving a problem in a processing work that the hydrogenated nitrile rubber is separated from a roll during a kneading work due to the high content of organic peroxide, a hydrogenated nitrile rubber composition using the master batch, and a cross-linked hydrogenated nitrile rubber molded article. According to the present invention, the organic peroxide master batch for hydrogenated nitrile rubber comprises the hydrogenated nitrile rubber, 1,3-bis(tert-butyl peroxy isopropyl)benzene and carbon black, wherein the amount of combined acrylonitrile of the hydrogenated nitrile rubber is less than 25 mass%, the content of organic peroxide is 10 to 30 mass%, and the content of carbon black is 10 to 30 mass%.