POLYMER COMPOSITION. AND RUBBER MOLDED BODY

• Main Authors: FUKUMOTO TAKATO, KIKUCHI TOSHIMITSU, SAKAGAMI YUTO, SANO TAKUYA, SENGA HIROFUMI, HAYAKAWA TOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 23.08.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

To provide a molded body having high hardness and excellent capability of blocking vibration.SOLUTION: A polymer composition contains (A) a highly-saturated diene polymer having a structure derived from an aromatic vinyl of 5-50 mass% and a structure derived from a vinyl group of 20-70 mol% in a structure derived from a diene monomer and (B) diene rubber at a ratio of the (A) polymer of 5-60 mass% and the (B) diene rubber of 40-95 mass%. A rubber molded body is made of the polymer composition and crosslinked rubber obtained by crosslinking the polymer composition.SELECTED DRAWING: None 【課題】振動を遮断する性能に優れ、高硬度な成形品を提供する。【解決手段】（Ａ）芳香族ビニルに由来する構造を５～５０質量％有し、ビニル基に由来する構造をジエン系モノマーに由来する構造中の２０～７０モル％含有する高飽和なジエン系重合体と、（Ｂ）ジエン系ゴムとを、前記（Ａ）重合体を５～６０質量％、前記（Ｂ）ジエン系ゴム４０～９５質量％の比率で含有する重合体組成物、及び、前記組成物を架橋して得られた架橋ゴムからなるゴム成型体により解決するものである。【選択図】なし