PNEUMATIC TIRE
    321.
    发明申请
    PNEUMATIC TIRE 审中-公开

    公开(公告)号:US20170233562A1

    公开(公告)日:2017-08-17

    申请号:US15503314

    申请日:2015-07-10

    Abstract: The present invention provides a pneumatic tire having well-improved rubber tensile strength and abrasion resistance. The present invention relates to a pneumatic tire formed from a rubber composition, the rubber composition containing: a hydrogenated copolymer obtained by copolymerization of an aromatic vinyl compound and a conjugated diene compound, the hydrogenated copolymer having a degree of hydrogenation of the conjugated diene units of 75 mol % or more; a fine particle silica having a CTAB specific surface area of 160 m2/g or more and a BET specific surface area of 170 m2/g or more; and carbon black, the rubber composition containing, per 100% by mass of the rubber component, 75% by mass or more of the hydrogenated copolymer, the rubber composition containing, relative to 100 parts by mass of the rubber component, 3 parts by mass or more of the carbon black.

    RUBBER COMPOSITION AND PNEUMATIC TIRE
    329.
    发明申请

    公开(公告)号:US20170121490A1

    公开(公告)日:2017-05-04

    申请号:US15310809

    申请日:2015-04-22

    Inventor: Tatsuya MIYAZAKI

    Abstract: Provided are a rubber composition that can achieve a balanced improvement in wet grip performance, abrasion resistance, and abrasion appearance after abrasion, and a pneumatic tire including a tread formed from the rubber composition. Included is a rubber composition containing: a rubber component including a diene rubber; an inorganic filler having a BET of 10-120 m2/g, formed of a compound of formula below, magnesium sulfate, or silicon carbide; and a fine particle carbon black having a BET of 151 m2/g or more and/or a low-temperature plasticizer having a freezing point of −10° C. or lower, the rubber composition containing, per 100 parts by mass of the rubber component, 1-70 parts by mass of the inorganic filler, 5-140 parts by mass of the fine particle carbon black, and 1-30 parts by mass of the low-temperature plasticizer, the combined amount of the filler and the carbon black being 50-190 parts by mass, mM.xSiOy.zH2O wherein M represents at least one metal selected from the group consisting of Al, Mg, Ti, Ca, and Zr, or an oxide or hydroxide of the metal; m represents an integer of 1-5; x represents an integer of 0 to 10; y represents an integer of 2-5; and z represents an integer of 0-10.

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