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公开(公告)号：EP3124534B1
公开(公告)日：2018-05-09
申请号：EP15769312.8
申请日：2015-03-20
申请人： NOK Corporation
发明人： AIBA Takafumi , MURAKAMI Hideyuki , UCHIDA Kenichi , MORIO Akira , SATO Hiroaki
CPC分类号： C08K7/06 , C08K3/04 , C08K7/10 , C08K2201/003 , C08K2201/006 , C08K2201/011 , C08L15/00 , F16H55/56 , F16J15/3284 , C08L15/005
摘要： An object of the present invention is to provide an HNBR composition and an HNBR crosslinked body excellent in abrasion resistance and pressure resistance. The object is achieved by an HNBR composition containing 3 to 20 parts by weight of carbon fibers or wollastonite as a hard filler per 100 parts by weight of a hydrogenated nitrile rubber and containing 72 to 87 parts by weight of a carbon black having an average particle diameter of 40 to 50 nm, an iodine adsorption of 35 to 49 g/kg, and a DBP oil absorption of 100 to 160 ml/100 g, as well as an HNBR crosslinked body acquired by crosslinking the HNBR composition.
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公开(公告)号：EP3677656A1
公开(公告)日：2020-07-08
申请号：EP18859116.8
申请日：2018-08-21
申请人： NOK Corporation
发明人： ABE Shunsuke , MURAKAMI Hideyuki
IPC分类号： C09K3/10 , C08K3/04 , C08K3/22 , C08K3/36 , C08K5/14 , C08K5/54 , C08L15/00 , F16J3/04 , F16J15/10 , F16J15/34
摘要： A sealing member for mechanical seals, which is a peroxide vulcanized molded article of a hydrogenated nitrile rubber having a bound acrylonitrile content of less than 20% and an iodine number of 20 mg/100 g or less. The sealing member for mechanical seals is obtained as a peroxide vulcanized molded article of a hydrogenated nitrile rubber composition comprising 0 to 5 parts by weight of carbon black, 20 to 100 parts by weight of silica, and 0.5 to 3 parts by weight of silane coupling agent, based on 100 parts by weight of hydrogenated nitrile rubber, and preferably further compounding 50 parts by weight or less of titanium oxide non-reinforcing filler. The obtained vulcanized molded article is to provide a sealing member for mechanical seals that can achieve desired LLC resistance, and that has excellent compression set characteristics, cold resistance, processability, hardness, etc.
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3.发明公开
公开(公告)号：EP3124534A1
公开(公告)日：2017-02-01
申请号：EP15769312.8
申请日：2015-03-20
申请人： NOK Corporation
发明人： AIBA Takafumi , MURAKAMI Hideyuki , UCHIDA Kenichi , MORIO Akira , SATO Hiroaki
CPC分类号： C08K7/06 , C08K3/04 , C08K7/10 , C08K2201/003 , C08K2201/006 , C08K2201/011 , C08L15/00 , F16H55/56 , F16J15/3284 , C08L15/005
摘要： An object of the present invention is to provide an HNBR composition and an HNBR crosslinked body excellent in abrasion resistance and pressure resistance. The object is achieved by an HNBR composition containing 3 to 20 parts by weight of carbon fibers or wollastonite as a hard filler per 100 parts by weight of a hydrogenated nitrile rubber and containing 72 to 87 parts by weight of a carbon black having an average particle diameter of 40 to 50 nm, an iodine adsorption of 35 to 49 g/kg, and a DBP oil absorption of 100 to 160 ml/100 g, as well as an HNBR crosslinked body acquired by crosslinking the HNBR composition.
摘要翻译： 本发明的目的是提供耐磨性和耐压性优异的HNBR组合物和HNBR交联体。 该目的通过一种HNBR组合物来实现，该组合物含有每100重量份氢化丁腈橡胶含有3-20重量份碳纤维或硅灰石作为硬质填料，并含有72-87重量份具有平均颗粒的炭黑 直径为40〜50nm，碘吸附量为35〜49g / kg，DBP吸油量为100〜160ml / 100g，HNBR组合物交联获得的HNBR交联体。
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4.发明公开
公开(公告)号：EP3650497A1
公开(公告)日：2020-05-13
申请号：EP18828177.8
申请日：2018-06-28
申请人： NOK Corporation
发明人： MURAKAMI Hideyuki , ABE Shunsuke
IPC分类号： C08L27/12 , C08J3/20 , C08J3/22 , C08K3/04 , F16J15/3284
摘要： A fluororubber composition that is a kneaded mixture of a carbon nanotube masterbatch comprising 4 to 20 parts by weight of multilayer carbon nanotubes, which are fibrous carbon nanostructures that do not contain monolayer carbon nanotubes, based on 100 parts by weight of a fluororubber polymer, and a fluororubber raw material comprising at least a fluororubber polymer and a reinforcing filler, in which the multilayer carbon nanotubes are compounded in an amount of 0.5 to 6 wt.% in the kneaded mixture. The kneading is performed using a roll or a kneader when the fluororubber composition is produced. The fluororubber composition can provide a fluororubber crosslinked molded article that exhibits abrasion resistance and blister resistance.
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公开(公告)号：EP3683261A1
公开(公告)日：2020-07-22
申请号：EP18856047.8
申请日：2018-07-25
申请人： NOK Corporation
发明人： MURAKAMI Hideyuki
摘要： A hydrogenated NBR composition comprising 40 to 80 parts by weight of silica having a BET specific surface area of 40 to 100 m 2 /g, and 0.5 to 3 parts by weight of a silane coupling agent, based on 100 parts by weight of a hydrogenated NBR blend of 35 to 50 wt.% of medium- to high-nitrile-content hydrogenated NBR having an acrylonitrile content of 30 to 38%, and 65 to 50 wt.% of high-nitrile-content hydrogenated NBR having an acrylonitrile content of 40 to 46%. Due to the use of medium- to high-nitrile-content hydrogenated NBR and high-nitrile-content hydrogenated NBR as a blend, both foaming resistance to HFC134a and swelling resistance to POE oil can be achieved. Further, due to the use of silane having a specific BET specific surface area and a silane coupling agent, desired compression set characteristics and abrasion resistance of the product can be secured. That is, the hydrogenated NBR composition satisfies various characteristics required for product functions with respect to HFC134a/PAG oil and HFO1234yf/POE oil.
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