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Title:
防振ゴム組成物および防振ゴム
Document Type and Number:
Japanese Patent JP7296414
Kind Code:
B2
Abstract:
To provide a vibration-proof composition and a vibration-proof rubber having small temperature dependency of an elastic modulus, excellent in flexibility and excellent in vibration-damping and vibration-proof performances with excellent carbon black dispersibility.SOLUTION: In a diene vibration-proof rubber composition containing 40-80 pts.mass of carbon black having a nitrogen adsorption specific surface area of 46-150 m2/g based on 100 pts.mass of the rubber constituent comprising a diene rubber, a 2,2,4-trimethyl-1,2-dihydroquinoline polymer as a damping imparting agent is contained in a range of over 5 pts.mass and 40 pts.mass or less based on 100 pts.mass of the rubber constituent. A vulcanizate of the vibration-proof rubber composition has type A durometer hardness of 35-70.SELECTED DRAWING: None

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Inventors:
Juria Endo
Michihiro Harada
Hidenori Naito
Application Number:
JP2021015454A
Publication Date:
June 22, 2023
Filing Date:
February 03, 2021
Export Citation:
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Assignee:
Kinugawa Rubber Industry Co., Ltd.
International Classes:
C08L7/00; C08K3/04; C08L9/00; C08L45/00
Domestic Patent References:
JP2001206983A
JP2011168740A
JP2006225441A
JP2001200103A
JP10110062A
JP2002293992A
Attorney, Agent or Firm:
Hiromichi Kobayashi
Kiyoshi Tomioka
Kazuaki Takashima