Title:
【発明の名称】タイヤトレツド用ゴム組成物
Document Type and Number:
Japanese Patent JP2652860
Kind Code:
B2
Abstract:
PURPOSE:To improve a tire especially in its drive stability by containing carbon black, respectively having a specified nitrogen specific surface area and dibutylphthalate oil absorption or the like, by a specific proportion with respect to rubber. CONSTITUTION:A rubber composite for a tire tread is constituted containing specific carbon black by a specific proportion for rubber. That is, the carbon black respectively sets a nitrogen specific surface area (N2SA) to 140-160m<2>/g, dibutylphthalate oil absorption (DBP oil absorption) to 120ml/100g or more and DELTADBP (DBP oil absorption - 24M4DBP oil absorption) to 30ml/100g or more while a half value width of aggregate distribution, measured by the centrifugal sedimentation method, to 50mmu or less. And this carbon black is contained by a proportion with 50-150pts.wt. carbon black for 100pts.wt. rubber. In this way, a tire is improved especially in its drive stability.
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Inventors:
KAWAKAMI KINYA
MURAKI TAKAO
MURAKI TAKAO
Application Number:
JP32137987A
Publication Date:
September 10, 1997
Filing Date:
December 21, 1987
Export Citation:
Assignee:
YOKOHAMA GOMU KK
International Classes:
B60C1/00; C08K3/04; C08L21/00; C09C1/48; (IPC1-7): C08L21/00; C08K3/04; C09C1/48
Attorney, Agent or Firm:
Shinichi Ogawa (2 outside)