NITRILE RUBBER ARTICLE HAVING NATURAL RUBBER CHARACTERISTICS AND METHOD OF PRODUCING THE NITRILE RUBBER ARTICLE

摘要

PROBLEM TO BE SOLVED: To provide a carboxylated acrylonitrile butadiene rubber article that is more flexible than a conventional nitrile rubber composition and has excellent physical strength and chemical resistance.SOLUTION: A method of producing a nitrile rubber article includes: adding 0.25-1.5 part of oxidized metal and 0.5-1.5 part of sulfur per 100 part of a dried rubber comprised of a carboxylated nitrile butadiene rubber terpolymer composition to an emulsion containing the carboxylated nitrile butadiene rubber terpolymer; adding more than 0 part but 1.5 part or lower alkali hydroxide or monovalent alkaline salt to achieve a pH of 8.5 or larger; and perform dipping. The total of the alkali hydroxide, monovalent alkaline salt, and oxide metal is larger than 1.0.