Title:
RUBBER COMPOSITION AND BLADDER FOR TIRE VULCANIZATION
Document Type and Number:
WIPO Patent Application WO/2019/194054
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a rubber composition which enables the achievement of a bladder for tire vulcanization, said bladder having achieved a good balance between durability and thermal conductivity at high levels. A solution for the problem is a rubber composition which contains (A) a butyl rubber, (B) a carbon black having a nitrogen adsorption specific surface area of 40 m2/g or less, (C) a phenolic resin and (D) a curing agent, and which is characterized in that the ratio of the blending amount (parts by mass) of the phenolic resin (C) relative to 100 parts by mass of the total of the butyl rubber (A) and the curing agent (D) to the nitrogen adsorption specific surface area (m2/g) of the carbon black (B), namely (blending amount (parts by mass) of phenolic resin (C))/(nitrogen adsorption specific surface area (m2/g) of carbon black (B)) is 0.19 or more.
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Inventors:
NAKAGAWA DAISUKE (JP)
Application Number:
PCT/JP2019/013432
Publication Date:
October 10, 2019
Filing Date:
March 27, 2019
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08L23/22; B29C33/02; B29C35/02; C08K3/04; C08L11/00; C08L61/00
Foreign References:
| JPS61195810A | 1986-08-30 | |||
| JPH106343A | 1998-01-13 | |||
| JP2014205928A | 2014-10-30 | |||
| JP2014118506A | 2014-06-30 | |||
| JP2012229397A | 2012-11-22 | |||
| JP2016035031A | 2016-03-17 |
Other References:
ARAI, HIRONORI: "Manufacturing process and characterization of carbon black", TANSO, vol. 223, 2006, pages 232 - 243, XP055645044
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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