Title:
ゴム組成物及び空気入りタイヤ
Document Type and Number:
Japanese Patent JP7195271
Kind Code:
B2
Abstract:
The rubber composition of the present invention contains: a rubber component (A) containing a butadiene-based rubber and 30% by mass or more of a natural rubber; a filler (B); 30 to 55 parts by mass of a softening agent (C) relative to 100 parts by mass of the rubber component (A); and 1 to 6 parts by mass of a linear polyhydric alcohol (D) relative to 100 parts by mass of the rubber component (A), wherein the softening agent (C) contains a softening agent (C1) which has a high affinity to the natural rubber in an amount of 0 parts by mass or more and less than 15 parts by mass relative to 100 parts by mass of the rubber component (A) and contains a softening agent (C2) which has a high affinity to the butadiene-based rubber in an amount of 10 parts by mass or more relative to 100 parts by mass of the rubber component (A). From the rubber composition, a crosslinked rubber composition having a good balance between low heat generation property and crack resistance can be obtained.
Inventors:
Yasuhiro Shoda
Application Number:
JP2019558046A
Publication Date:
December 23, 2022
Filing Date:
October 17, 2018
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
C08L9/00; B60C1/00; C08K5/053; C08K5/54; C08L7/00; C08L9/06; C08L57/02
Domestic Patent References:
| JP2013213129A | ||||
| JP11310009A | ||||
| JP7118457A | ||||
| JP2016006135A | ||||
| JP2016003324A | ||||
| JP2016003325A |
Foreign References:
| CN104231345A |
Attorney, Agent or Firm:
Patent Attorney Corporation Otani Patent Office