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    TIRE FOR NEW TRANSPORTATION VEHICLE
    1.
    发明专利
    TIRE FOR NEW TRANSPORTATION VEHICLE 失效

    公开(公告)号：JPH0367705A

    公开(公告)日：1991-03-22

    申请号：JP20531889

    申请日：1989-08-08

    Applicant: BRIDGESTONE CORP

    Inventor： TANAKA MAKOTO ,  SATO SUSUMU

    IPC: B61F13/00 ,  B60C11/00 ,  B60C19/00

    Abstract: PURPOSE:To prevent current from entering from a tire to a rim by in a new transportation vehicle to which power is supplied from a travelling road by forming a top tread and a side tread of the tire of rubber whose electric resistance is above specific value. CONSTITUTION:A tire 10 used for a new transportation vehicle such as a monorail has a top tread 15 disposed in a radially outermost side portion. A rubber layer 20 is disposed at the top tread side 15 of a carcass 18 at an outermost side portion. Both end portions in the direction of width of the tire of the rubber layer 20 respectively reach side treads 22 provided at tire side portions. In the above mentioned construction, the top tread 15 and the side tread 22 are respectively formed of the same and specific rubber material. This rubber material is formed by blending 30% of carbon having average particle side of 23mum relative to weight of rubber and setting electric resistance to above 160KOMEGA, for example, 100MOMEGA.

    RUBBER COMPOSITION FOR LARGE TIRE TREAD
    2.
    发明专利
    RUBBER COMPOSITION FOR LARGE TIRE TREAD 失效

    公开(公告)号：JPH02185543A

    公开(公告)日：1990-07-19

    申请号：JP462189

    申请日：1989-01-13

    Applicant: BRIDGESTONE CORP

    Inventor： NAKAJIMA ICHIRO ,  OHARA MASASHI ,  SATO SUSUMU

    IPC: B60C1/00 ,  C08K3/04 ,  C08K5/17 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00

    Abstract: PURPOSE:To obtain a rubber compsn. capable of improving the wear resistance and service life of a tire remarkably by compounding a butadiene rubber and a natural rubber of an isoprene rubber with a specified carbon black. CONSTITUTION:A rubber compsn. comprising 100 pts.wt. rubber component consisting of 15-70 pts.wt. butadiene rubber and 30-85 pts.wt. natural and/or isoprene rubber and 30-75 pts.wt. carbon black with a cetyltrimethylammonium bromide(CTAB) adsorption specific surface area of 140-150m /g and a dibutyl phthalate(DBP) absorption of 130-150ml/100g. It is pref. that said rubber compsn. exhibits a dynamic storage modulus E' of 1.00X10 -1.35X10 kg/cm and a loss factor tandelta of 0.23-0.28. The loading of the butadiene rubber is pref. 35-70wt.%.

    RUBBER COMPOSITION AND LARGE SIZE RADIAL TIRE USING THE SAME RUBBER COMPOSITION AND HAVING TREAD PORTION
    3.
    发明专利
    RUBBER COMPOSITION AND LARGE SIZE RADIAL TIRE USING THE SAME RUBBER COMPOSITION AND HAVING TREAD PORTION 失效

    公开(公告)号：JPH02182737A

    公开(公告)日：1990-07-17

    申请号：JP84489

    申请日：1989-01-07

    Applicant: BRIDGESTONE CORP

    Inventor： SATO SUSUMU ,  OHARA MASASHI ,  NAKAJIMA ICHIRO

    IPC: B60C1/00 ,  C08K3/04 ,  C08L7/00 ,  C08L9/00

    Abstract: PURPOSE:To provide a rubber composition having highly improved uneven wear resistance and suitable for the tread portions of large size radial tires by compounding a specific rubber component consisting essentially of SBR with an ultrahigh structure carbon black. CONSTITUTION:A rubber composition comprises (A) 100 pts.wt. of a rubber component and (B) 30-70 pts.wt. of ultrahigh structure carbon black having a cecyltrimethylammonium bromide(CTAB) adsorption specific area (m /g) of 130-160 and a compressed dibutylphthalate adsorption (24M4DBP) of 113-140, the rubber component (A) comprising A1: 25-75 pts.wt. of a styrene.butadiene copolymer and A2: 75-25 pts.wt. of natural rubber, a mixture of the natural rubber and polyisopropylene rubber or a mixture of the natural rubber, the polyisoprene rubber and polybutadiene rubber.

    Rubber composition having excellent abrasion resistance and processability
    5.
    发明专利
    Rubber composition having excellent abrasion resistance and processability 失效
    橡胶组合物具有优异的耐磨性和可加工性

    公开(公告)号：JPS6160738A

    公开(公告)日：1986-03-28

    申请号：JP18256084

    申请日：1984-09-03

    Applicant: Bridgestone Corp

    Inventor： SATO SUSUMU

    IPC: C08L7/00 ,  C08K3/00 ,  C08K3/36 ,  C08L1/00 ,  C08L9/00 ,  C08L9/06 ,  C08L21/00 ,  C08L23/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C08L101/00

    Abstract: PURPOSE: A rubber composition having a low viscosity in an unvulcanized state, excellent processability and good abrasion resistance, prepared by adding silica of a large specific surface area and a large oil absorption to a specified copolymer rubber obtained by a solution polymerization process.
    CONSTITUTION: A copolymer rubber (of a glass transition temperature ≥-70°C and a MW distribution of 1.5W4) is obtained by copolymerizing a conjugated diene compound (e.g., butadiene) with a vinylaromatic compound (e.g., styrene) in the presence of an organolithium catalyst (e.g., butyllithium) in a hydrocarbon solvent. 100pts.wt. said copolymer rubber (or a blend rubber comprising at least 50wt% this rubber and at most 50wt% natural or diene rubber) is mixed with 20W110pts.wt. silica (of a specific surface area as determined by nitrogen adsorption of 200W260m
    2 /g and an oil absorption of 200W300ml/100g) to obtain a rubber composition.
    COPYRIGHT: (C)1986,JPO&Japio

    Abstract translation: 目的：通过在通过溶液聚合法得到的规定的共聚物橡胶中添加大比表面积大，吸油性大的二氧化硅，制备未硫化状态下的低粘度，优异的加工性和良好的耐磨性的橡胶组合物。 构成：通过使共轭二烯化合物（例如丁二烯）与乙烯基芳族化合物（例如苯乙烯）共聚合得到共聚物橡胶（玻璃化转变温度= 70℃，MW分布为1.5-4） 在烃溶剂中存在有机锂催化剂（例如丁基锂）。 100pts.wt 所述共聚物橡胶（或包含至少50重量％的该橡胶和至多50重量％的天然或二烯橡胶的共混橡胶）与20-110pts.wt。 二氧化硅（通过氮吸附测定的比表面积为200-260m 2 / g，吸油量为200-300ml / 100g），得到橡胶组合物。

    RUBER COMPOSITION
    7.
    发明专利
    RUBER COMPOSITION 失效

    公开(公告)号：JPS6257438A

    公开(公告)日：1987-03-13

    申请号：JP19472685

    申请日：1985-09-05

    Applicant: BRIDGESTONE CORP

    Inventor： SATO SUSUMU

    IPC: C08L21/00 ,  C08K3/04

    Abstract: PURPOSE:A composition, obtained by incorporating a specific carbon black with natural and diene based synthetic rubber and having remarkably improved dispersibility of the carbon black and further markedly improved fatigue failure resistance and low thermogenic properties at the same time. CONSTITUTION:A rubber composition obtained by incorporating a rubber compo nent selected from natural rubber and diene based syntheitc rubber with 20-100 pts.wt. carbon black having the following characteristics; 22mmu =1.08 ratio N2SA (m /g)/IA(mg/g) [Dn is the arithmetic means diameter measured under an electron microscope; Dst is the aggregate diameter mode value; S(mmu) is the standard deviation of the above-mentioned arithmetic mean diameter distribution; DELTAD50(mmu) is the half width of aggregate distribution; DELTADBP is the aggregate strength; N2 SA(m /g) is the nitrogen adsorption specific surface area; IA (mg/g) is the iodine absorption].

    RUBBER COMPOSITION FOR TIRE TREAD
    8.
    发明专利
    RUBBER COMPOSITION FOR TIRE TREAD 失效

    公开(公告)号：JPS61207452A

    公开(公告)日：1986-09-13

    申请号：JP4734585

    申请日：1985-03-12

    Applicant: BRIDGESTONE CORP

    Inventor： SATO SUSUMU

    IPC: C08K3/04 ,  C08L7/00 ,  C08L21/00

    Abstract: PURPOSE:To obtain a rubber compsn. for tire tread, which has improved wear resistance, by blending specified carbon black with natural or synthetic diene rubber. CONSTITUTION:A rubber compsn. is obtd. by blending 20-100pts.wt. carbon black having the following physical properties with 100pts.wt. at least one member selected from among natural and synthetic diene rubbers. Carbon black having a nitrogen adsorption surface area of 100-200m /g, 24M4DBP absorption of 70-120ml/100g and the relationship of the formula (wherein D is the quantity of generated hydrogen represented by m-mol which is a quantity of hydrogen generated at 1,200 deg.C per gram of carbon black) is used. Particularly preferred nitrogen adsorption surface area is 140-200m /g.

    Tire tread rubber composition
    9.
    发明专利
    Tire tread rubber composition 失效
    轮胎橡胶组合物

    公开(公告)号：JPS6191234A

    公开(公告)日：1986-05-09

    申请号：JP21150584

    申请日：1984-10-11

    Applicant: Bridgestone Corp

    Inventor： SATO SUSUMU ,  ONDA MASARU

    IPC: C08K3/04 ,  C08L7/00 ,  C08L21/00

    Abstract: PURPOSE: A tire tread rubber composition excellent in abrasion resistance, obtained by adding a carbon black having specified properties to a diene rubber component.
    CONSTITUTION: A carbon black having an arithmetic means particle diameter as determined electron-microscopically ≤19mμ, a standard deviation in the distribution of particle diameters within the range represented by the equation, a means diameter (Stokes diameter) of agglometers of 50W80mμ, a content of particles of a diameter ≥1,000μ in the particle diameter distribution of granulated particles ≥70wt% is prepared. 30W80pts.wt. this carbon black is added to 100pts.wt diene rubber component to obtain the purpose tire tread rubber composition. As the diene rubber, styrene/butadiene copolymer rubber, polybutadiene rubber or the like can be used.
    COPYRIGHT: (C)1986,JPO&Japio

    Abstract translation: 目的：通过向二烯橡胶组分添加具有特定性能的炭黑而获得的耐磨性优异的轮胎胎面橡胶组合物。 构成：具有算术平均粒径的电子显微镜测定的炭黑<= 19mmu，粒径分布在由等式表示的范围内的标准偏差，50-80mmu的聚光仪的平均直径（Stokes直径） 制备颗粒粒径分布> 70重量％时直径> =1,000μm的颗粒的含量。 30-80pts.wt。 将该炭黑加入到100pts.wt二烯橡胶组分中以获得目的轮胎胎面橡胶组合物。 作为二烯橡胶，可以使用苯乙烯/丁二烯共聚物橡胶，聚丁二烯橡胶等。

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