公开(公告)号：EP3309200A4

公开(公告)日：2018-07-11

申请号：EP16807330

申请日：2016-05-31

Applicant: BRIDGESTONE CORP

Inventor： YAMAMOTO MASAAKI

IPC: C08L7/00 ,  C08K3/04 ,  C08K3/36 ,  C08K5/31 ,  C08L9/00 ,  F16F15/08

CPC classification number: C08L7/00 ,  C08K3/04 ,  C08K3/36 ,  C08K5/31 ,  C08K2201/006 ,  C08L9/00 ,  F16F15/08 ,  C08K5/548

Abstract: The present invention provides a rubber composition and an anti-vibration rubber composition both comprising: a rubber component containing at least a natural rubber and a high-cis isoprene rubber having a content of cis-1,4 bond of 95% by mass or more; a carbon black having an iodine adsorption number of 35 mg/g or less and a DBP adsorption number of 75 ml/100 g or less; a silica having a nitrogen adsorption specific surface area (the BET method) of 80 m 2 /g or more and less than 240 m 2 /g; and a compound represented by the following general formula (1), (wherein m and n each independently represent an integer of 1 or more), and an anti-vibration rubber obtained by curing the rubber composition. The rubber composition and the anti-vibration rubber composition have a low dynamic magnification, are excellent in fatigue property and can retain scorch resistance (work stability).

公开(公告)号：EP3153545A4

公开(公告)日：2017-06-14

申请号：EP15804040

申请日：2015-05-13

Applicant: BRIDGESTONE CORP

Inventor： YAMAMOTO MASAAKI

IPC: C08L7/00 ,  C08K5/435 ,  C08L9/00 ,  F16F15/08

CPC classification number: C08L7/00 ,  C08K5/435 ,  C08L9/00 ,  C08L2205/06 ,  C08L2312/00

Abstract: The present invention addresses the problem of providing a rubber vibration isolator composition with which low temperature characteristics can be significantly improved while maintaining basic strength characteristics (hardness, tensile elongation, tensile strength), and a rubber vibration isolator obtained by curing said rubber composition. The present invention provides a rubber vibration isolator composition characterized in containing natural rubber, a high cis content isoprene rubber, a crosslinking agent and an aromatic sulfonamide having a specified chemical structure. The high cis content isoprene rubber refers to the cis-1,4 bond content being at least 95%.

Abstract translation: 本发明解决了提供能够在维持基本强度特性（硬度，拉伸伸长率，拉伸强度）的同时显着改善低温特性的橡胶振动隔离器组合物以及通过固化所述橡胶组合物而获得的橡胶隔振器的问题。 本发明提供一种橡胶振动隔离器用组合物，其特征在于，其含有具有特定化学结构的天然橡胶，高顺式含量异戊二烯橡胶，交联剂和芳香族磺酰胺。 高顺式含量的异戊二烯橡胶是指顺式-1,4键含量至少为95％。

公开(公告)号：EP2924072A4

公开(公告)日：2016-07-13

申请号：EP13856090

申请日：2013-11-12

Applicant: BRIDGESTONE CORP

Inventor： NAGATA TAKESHI ,  YAMAMOTO MASAAKI

IPC: C08L7/00 ,  C08K3/06 ,  C08K5/3415 ,  C08K5/435 ,  C08L9/00 ,  C09K3/00

CPC classification number: C08L7/00 ,  C08K3/06 ,  C08K5/3415 ,  C08K5/435 ,  C08L9/00 ,  C09K3/00

Abstract: The present invention addresses the problem of providing: an antivibration rubber composition which can provide a hardened rubber product that has excellent antivibration properties (a low motion magnification), compression permanent strain and low-temperature properties and can keep strength properties (hardness, tensile elongation, tensile strength) and hot aging resistance thereof at good levels; and an antivibration rubber which is produced by hardening the rubber composition. An antivibration rubber composition characterized by comprising a rubber component, sulfur, a bismaleimide compound and N-phenyl-N-(trichloro-methylthio)benzenesulfoneamide, wherein the rubber component comprises a natural rubber and a polybutadiene rubber at a blend ratio of 60/40 to 90/10 by mass.

公开(公告)号：EP2716699A4

公开(公告)日：2015-03-11

申请号：EP12792017

申请日：2012-05-31

Applicant: BRIDGESTONE CORP

Inventor： YAMAMOTO MASAAKI

IPC: C08L9/00 ,  C08K5/3415 ,  C08K5/435 ,  C08L7/00

CPC classification number: C08C19/20 ,  C08F8/34 ,  C08J3/24 ,  C08J2307/00 ,  C08J2309/00 ,  C08K5/3415 ,  C08K5/435 ,  C08L9/00 ,  C08L7/00

Abstract: The purpose of the present invention is to provide: an anti-vibration rubber composition which enables the production of a hardened rubber article having excellent heat resistance, compression set, low dynamic magnification, tensile properties (elongation, strength), low-temperature properties and workability (scorch resistance); and an anti-vibration rubber which is produced by hardening the rubber composition. The anti-vibration rubber composition is characterized by comprising a rubber component mainly composed of a diene rubber, a bismaleimide compound as a vulcanizing agent, and N-phenyl-N-(trichloromethylthio)benzenesulfoneamide.

公开(公告)号：EP2810984A4

公开(公告)日：2015-11-11

申请号：EP13743193

申请日：2013-01-30

Applicant: BRIDGESTONE CORP

Inventor： YAMAMOTO MASAAKI

IPC: C08L9/00 ,  C08K3/06 ,  C08K5/3415 ,  C08K5/435 ,  C08L7/00 ,  C08L23/02 ,  C08L23/08 ,  C09K3/00 ,  F16F1/36

CPC classification number: C08L7/00 ,  C08K3/06 ,  C08K5/3415 ,  C08K5/435 ,  C08L9/00 ,  C08L23/083 ,  C08L2201/08 ,  C08L2205/06