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13 条记录 (耗时 0.021 秒)

    TIRE RUBBER COMPOSITIONS
    1.
    发明申请
    TIRE RUBBER COMPOSITIONS 审中-公开

    公开(公告)号：US20200332089A1

    公开(公告)日：2020-10-22

    申请号：US16643128

    申请日：2018-08-29

    申请人： KURARAY CO., LTD.

    发明人： Hiroshi KANBARA ,  Daisuke KODA

    IPC分类号： C08L7/00 ,  C08L9/06 ,  B60C15/06 ,  B60C1/00

    摘要： The tire rubber composition includes 100 parts by mass of a solid rubber (A) having a glass transition temperature (Tg) of not more than −10° C., 0.1 to 50 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound with a specific structure, and 20 to 200 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying the following (i) to (iv): (i) the weight average molecular weight (Mw) is 15,000 to 120,000, (ii) the vinyl content is not more than 70 mol %, (iii) the average number of the functional groups per molecule of the modified liquid diene rubber (B) is 1 to 30, and (iv) the glass transition temperature (Tg) is not more than 0° C.

    HEAVY-DUTY TIRE RUBBER COMPOSITIONS AND TIRES
    2.
    发明申请
    HEAVY-DUTY TIRE RUBBER COMPOSITIONS AND TIRES 审中-公开

    公开(公告)号：US20200254816A1

    公开(公告)日：2020-08-13

    申请号：US16643160

    申请日：2018-08-29

    申请人： KURARAY CO., LTD.

    发明人： Daisuke KODA ,  Hiroshi KANBARA

    IPC分类号： B60C1/00 ,  B60C15/06 ,  C08L7/00 ,  C08L25/10 ,  C08F236/06 ,  C08F236/08 ,  C08F230/08 ,  C08K3/04 ,  C08K3/36

    摘要： The invention provides a heavy-duty tire rubber composition excellent in wet grip performance and steering stability, and a tire tread, a bead filler, a tire belt and a heavy-duty tire which each partially include the composition. The heavy-duty tire rubber composition includes 100 parts by mass of a solid rubber (A), 0.1 to 50 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound with a specific structure, and 20 to 200 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying the following (i) and (ii): (i) the weight average molecular weight (Mw) is not less than 1,000 and not more than 120,000, and (ii) the vinyl content is not less than 30 mol % and less than 70 mol %.

    CONJUGATED DIENE GRAFT POLYMER AND METHOD FOR PRODUCING THE SAME
    3.
    发明申请
    CONJUGATED DIENE GRAFT POLYMER AND METHOD FOR PRODUCING THE SAME 有权

    公开(公告)号：US20220289872A1

    公开(公告)日：2022-09-15

    申请号：US17761384

    申请日：2020-09-18

    申请人： KURARAY CO., LTD.

    发明人： Yoshikazu UENO ,  Hiroshi KANBARA ,  Atsushi INATOMI ,  Junya TAKAI ,  Zhaoming MA

    IPC分类号： C08C19/25 ,  C08C19/26 ,  C08C19/00 ,  C08L15/00

    摘要： To provide a conjugated diene graft polymer having high transparency, heat resistance and weather resistance, and a method for producing the conjugated diene graft polymer. A method for producing a conjugated diene graft polymer in which a side chain (b) including a polymer including at least one monomer unit selected from the group consisting of a conjugated diene unit and an aromatic vinyl compound unit is bonded to a main chain (a) including a polymer including a conjugated diene unit, via a hetero atom Z serving as a branching point and having a valence of not less than 3, the method including a step of reacting a specific active end polymer and a specific functional group-modified conjugated diene polymer having a functional group in a side chain to thereby produce a conjugated diene graft polymer; and a step of recovering the conjugated diene graft polymer obtained.

    TIRE RUBBER COMPOSITIONS
    6.
    发明申请
    TIRE RUBBER COMPOSITIONS 审中-公开

    公开(公告)号：US20200207956A1

    公开(公告)日：2020-07-02

    申请号：US16643181

    申请日：2018-08-29

    申请人： KURARAY CO., LTD.

    发明人： Hiroshi KANBARA ,  Daisuke KODA

    IPC分类号： C08L7/00 ,  C08L9/06 ,  B60C11/00 ,  B60C1/00

    摘要： The invention provides a tire rubber composition capable of giving crosslinked products having excellent properties including mechanical strength such as abrasion resistance, a crosslinked product of the composition, and a tire tread, a bead filler, a tire belt and a pneumatic tire which each partially include the composition or the crosslinked product and which each exhibit satisfactory dry grip performance plus excellent wet grip performance and ice grip performance and can attain enhanced steering stability. The tire rubber composition includes 100 parts by mass of a solid rubber (A) having a glass transition temperature (Tg) of not more than −10° C., 0.1 to 50 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound with a specific structure, and 20 to 200 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying the following (i) to (iv): (i) the weight average molecular weight (Mw) is not less than 1,000 and less than 15,000, (ii) the vinyl content is not more than 70 mol %, (iii) the average number of the functional groups per molecule of the modified liquid diene rubber (B) is 1 to 20, and (iv) the glass transition temperature (Tg) is not more than 0° C.

    RUBBER COMPOSITION, VULCANIZED RUBBER, AND TIRE
    8.
    发明申请
    RUBBER COMPOSITION, VULCANIZED RUBBER, AND TIRE 审中-公开
    橡胶组合物，VULCANIZED RUBBER和TIRE

    公开(公告)号：US20160053097A1

    公开(公告)日：2016-02-25

    申请号：US14780802

    申请日：2014-03-25

    申请人： KURARAY CO., LTD.

    发明人： Daisuke KODA ,  Kei HIRATA ,  Hiroshi KANBARA

    IPC分类号： C08L9/06 ,  C08L9/00 ,  C08L7/00

    CPC分类号： C08L9/06 ,  B60C1/00 ,  C08K3/013 ,  C08K3/04 ,  C08K5/0025 ,  C08L7/00 ,  C08L9/00 ,  Y02T10/862

    摘要： The invention relates to a rubber composition having a good processability, and simultaneously having a rolling resistance performance and hardness after vulcanization at high levels, with which the contamination of the mold for processing due to the bleeding-out of the plasticizer can be suppressed, and in which the migration of the plasticizer and so on is suppressed to a low level; a vulcanized rubber obtained by vulcanizing the rubber composition; and to a tire including the rubber composition as at least a part thereof. The rubber composition contains 100 parts by mass of rubber component (A) composed of at least one of a synthetic rubber and a natural rubber, 0.1 to 50 parts by mass of a diene polymer (B), 20 to 150 parts by mass of a filler (C), 0.1 to 10 parts by mass of a vulcanizing agent (D), 0.1 to 15 parts by mass of a vulcanization accelerator (E) and 0.1 to 15 parts by mass of vulcanization aid (F).

    摘要翻译： 本发明涉及具有良好加工性的橡胶组合物，同时具有高水平硫化后的滚动阻力性能和硬度，可以抑制由于增塑剂渗出而导致的加工模具污染;以及 其中增塑剂的迁移等被抑制到低水平; 通过硫化橡胶组合物获得的硫化橡胶; 以及包括至少部分橡胶组合物的轮胎。 橡胶组合物含有100质量份由合成橡胶和天然橡胶中的至少一种构成的橡胶成分（A），0.1〜50质量份的二烯系聚合物（B），20〜150质量份的 填料（C），0.1〜10质量份硫化剂（D），0.1〜15质量份硫化促进剂（E）和0.1〜15质量份硫化助剂（F）。

    MODIFIED LIQUID DIENE POLYMER AND RUBBER COMPOSITION
    10.
    发明申请
    MODIFIED LIQUID DIENE POLYMER AND RUBBER COMPOSITION 有权

    公开(公告)号：US20210017320A1

    公开(公告)日：2021-01-21

    申请号：US16978188

    申请日：2019-03-04

    申请人： KURARAY CO., LTD.

    发明人： Satomi OHTA ,  Hiroshi KANBARA ,  Daisuke KODA

    IPC分类号： C08F297/02 ,  C08L9/06 ,  B60C1/00

    摘要： The invention provides a modified liquid diene polymer that allows a rubber composition to give a crosslinked product which contains a filler in a dispersed state ideal for attaining enhanced properties and which also exhibits excellent properties such as wet grip and abrasion resistance. The invention also provides a rubber composition including the modified liquid diene polymer, a crosslinked product thereof, and a tire which includes a portion including the composition or the crosslinked product. The modified liquid diene polymer is a product of modification, with a specific silane compound, of a liquid diene block copolymer including a polymer block (b′1) or (b″1) containing butadiene units and a polymer block (b′2) or (b″2). The modified liquid diene polymer has a functional group derived from the silane compound, and satisfies specific conditions.