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    PNEUMATIC TIRE
    1.
    发明申请
    PNEUMATIC TIRE 审中-公开

    公开(公告)号：US20180134075A1

    公开(公告)日：2018-05-17

    申请号：US15869895

    申请日：2018-01-12

    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

    Inventor： Toru IIZUKA ,  Tomomi MASUI ,  Mutsuki SUGIMOTO

    IPC: B60C1/00

    CPC classification number: B60C1/0008 ,  B32B25/08 ,  B32B25/18 ,  B32B27/08 ,  B32B27/302 ,  B32B2270/00 ,  B32B2274/00 ,  B32B2307/54 ,  B32B2307/71 ,  B32B2307/712 ,  B32B2307/718 ,  B32B2307/724 ,  B32B2605/00 ,  B60C5/14 ,  B60C2005/145 ,  C08F8/10 ,  C08F297/00 ,  C08L53/00 ,  C08L23/22 ,  C08L53/005 ,  C08L91/00

    Abstract: A pneumatic tire has a carcass layer extending from a tread portion to bead portions on both sides thereof, a belt layer on an outer side of a crown portion thereof, and an inner liner disposed on an inner side of the carcass layer. The inner liner is composed of a first layer disposed on an inner side of the tire, and a second layer disposed in contact with a rubber layer of said carcass layer. The first layer is an elastomer composition containing a thermoplastic elastomer, an ultraviolet absorber and an antioxidant, the thermoplastic elastomer containing at least one of a styrene-isobutylene-styrene block copolymer and a SIBS modified copolymer obtained by modifying a styrene block portion of a styrene-isobutylene-styrene block copolymer with one of acid chloride and acid anhydride having an unsaturated bond. The second layer contains an elastomer containing at least one of a styrene-isoprene-styrene block copolymer and a styrene-isobutylene block copolymer. The first layer and the second layer are elastomer compositions containing the ultraviolet absorber and the antioxidant by 0.5 parts by mass to 40 parts by mass relative to 100 parts by mass of an elastomer component. In the inner liner, an average thickness Gs in a buttress region Rs extending from a tire largest width position to a corresponding position Lu at a belt layer end is thinner than an average thickness Gb in a bead region Rb extending from the tire largest width position to a bead toe.

    PNEUMATIC TIRE
    4.
    发明申请
    PNEUMATIC TIRE 审中-公开

    公开(公告)号：US20170239993A1

    公开(公告)日：2017-08-24

    申请号：US15588284

    申请日：2017-05-05

    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

    Inventor： Toru IIZUKA

    IPC: B60C5/14 ,  B60C1/00

    CPC classification number: B60C5/14 ,  B60C1/0008 ,  B60C2005/145

    Abstract: There is provided a pneumatic tire including an inner liner provided therein to improve air permeability resistance, flection fatigue resistance, and cracking resistance. In the pneumatic tire including the inner liner provided therein, the inner liner is formed of at least one polymer sheet containing a styrene-isobutylene-styrene triblock copolymer, and an average thickness Gs of a buttress region Rs is smaller than an average thickness Gb of a bead region Rb, the buttress region Rs extending from a tire maximum width position to a corresponding position Lu of a belt layer end, the bead region Rb extending from the tire maximum width position to a bead toe.

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