公开(公告)号：JP2007238933A

公开(公告)日：2007-09-20

申请号：JP2007029100

申请日：2007-02-08

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： OSHIMA NOBUMITSU

IPC: C08L21/00 ,  B60C1/00 ,  C08K3/04 ,  C08K5/00

CPC classification number: B60C1/00 ,  B60C1/0016 ,  C08K5/0025 ,  C08K5/01 ,  C08K5/3415 ,  C08K5/37 ,  C08K7/06 ,  C08L21/00

Abstract: PROBLEM TO BE SOLVED: To provide a rubber composition which can realize a high hysteresis loss characteristic without deteriorating other physical properties such as fracture characteristics and elongation at break, and to provide a tire using the rubber composition.
SOLUTION: The rubber composition comprises at least one rubber component selected from the group consisting of natural rubber and synthetic rubber, a graphitized carbon material, and a polycyclic aromatic compound having a crosslinkable group. In this rubber composition, the graphitized carbon material is preferably vapor-grown carbon fiber, and the content of the graphitized carbon material is preferably 0.1 to 100 pts.mass based on 100 pts.mass of the rubber component.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种可以实现高磁滞损耗特性而不会破坏诸如断裂特性和断裂伸长率的其它物理性质的橡胶组合物，并提供使用该橡胶组合物的轮胎。 解决方案：橡胶组合物包含至少一种选自天然橡胶和合成橡胶的橡胶组分，石墨化碳材料和具有可交联基团的多环芳族化合物。 在该橡胶组合物中，石墨化碳材料优选为气相生长碳纤维，石墨化碳材料的含量优选为0.1〜100重量份，基于100重量份的橡胶组分。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006298946A

公开(公告)日：2006-11-02

申请号：JP2005117725

申请日：2005-04-15

Applicant: Bridgestone Corp ,  株式会社ブリヂストン

Inventor： INAMURA TOMOMI ,  OSHIMA NOBUMITSU ,  MAEDA MITSUAKI ,  AOKI SEI

IPC: C08L21/00 ,  C08K3/04 ,  C08K7/06

Abstract: PROBLEM TO BE SOLVED: To provide a vulcanized rubber composition that exhibits a good balance among various properties and, particularly, is excellent in mechanical properties and thermal conductivity by using a filler exhibiting high effects even with a relatively small added amount and exerting no bad influences on other performances such as dynamic properties.
SOLUTION: The vulcanized rubber composition comprises a rubber material as a base material and, incorporated as a filler therewith, a carbon fiber having a number-average grain size of at most 5 μm and a weight-average grain size of at most 20 μm in the size distribution as measured by a laser diffraction grain size distribution measuring apparatus. The content of the carbon fiber is preferably 0.01-100 pts.mass based on 100 pts.mass of the rubber material.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种硫化橡胶组合物，其在各种性能之间具有良好的平衡，并且特别是通过使用即使具有相对较小的添加量也表现出高效果的填料并且施加的机械性能和导热性优异 对其他性能如动态性能影响不大。 解决方案：硫化橡胶组合物包括作为基材的橡胶材料，并且作为其填料掺入数均粒径为至多5μm的碳纤维和最多重均粒径 通过激光衍射粒度分布测量装置测量的尺寸分布为20μm。 基于100重量份的橡胶材料，碳纤维的含量优选为0.01〜100质量份。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2000127162A

公开(公告)日：2000-05-09

申请号：JP30680898

申请日：1998-10-28

Applicant: BRIDGESTONE CORP

Inventor： IZUMIMOTO TAKAHARU ,  OSHIMA NOBUMITSU

IPC: B29B7/48 ,  B29B17/00

Abstract: PROBLEM TO BE SOLVED: To continuously treat with an advantageous cost and to improve a treating capability by providing at least one annular segment to be engaged with suitable position of a pair of screws of a biaxial extruder. SOLUTION: An annular segment is disposed in a positional relationship for engaging a larger sectional radial part than sectional diameter of a screw shaft at least one position of a pair of screws in a screw segment structure of a biaxial extruder. A gap between rings engaged with each other, a gap between an outer periphery of the ring and an outer periphery of another shaft are set to a predetermined distance capable of giving a sufficient shearing force to the vulcanized rubber so that only a material flowed by sealing a channel of a material to be treated can pass. Even if the rubber becomes a fine particle state, the rubber cannot pass through an annular part, a process is advanced, and the material becoming an unvulcanized state is only advanced ahead. Thus, a continuous treatment with an advantageous cost can be achieved and a good treatment with high capability can be performed.

公开(公告)号：JPH0411501A

公开(公告)日：1992-01-16

申请号：JP11065290

申请日：1990-04-27

Applicant: BRIDGESTONE CORP

Inventor： OSHIMA NOBUMITSU ,  KITAMURA TAKASHI ,  FUJIO RYOTA ,  MATSUO KENJI

IPC: B60C1/00 ,  B60C11/00 ,  C08C19/28 ,  C08F8/00 ,  C08F279/00 ,  C08F279/02 ,  C08L13/00

Abstract: PURPOSE:To improve the heat resistance of the above performance pneumatic tire by arranging rubber composition, which mainly contains denaturation conjugate diene polymer with alpha, beta unsaturated carboxylic acid, shown as an usual formula, added to conjugate diene polymer by specified wt%, for the tread. CONSTITUTION:Rubber composition, which contains as main component alpha, betaunsaturated carboxylic acid, shown as Formula I (R1-R3 show hydrogen atom, halogen atom or alkyl group with the number of carbons being 5 or less, alkenyl group or allyl group or substituted alkyl group, or alkenyl group or allyl group, mutually and independently), e.g., at least one type of denaturation conjugate diene polymer with 0.1-5.0wt% acrylic acid added to conjugate diene polymer such as 1,4-polybutadiene, is arranged for a tread. In this way, heat resistance is improved.