Title:
RUBBER COMPOSITION FOR TIRE, TREAD RUBBER, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2022/259751
Kind Code:
A1
Abstract:
The problem of the present invention is to provide a rubber composition for a tire with which both tire gripping performance and manufacturing workability can be achieved at high levels. The solution to this problem is a rubber composition, for a tire, that includes a rubber component and a softening agent, and that is characterized in that: the rubber component includes at least one substance selected from styrene-butadiene rubbers and butadiene rubbers; the softening agent has a softening point of more than 110°C and includes a terpene-based resin and a hydrogenated resin having a weight average molecular weight of 200-1600 g/mol in terms of polystyrene; and the hydrogenated resin and the terpene-based resin satisfy the formula: mass ratio of hydrogenated resin/terpene-based resin ≥ 1.4/1.
Inventors:
AOKI KOHEI (JP)
Application Number:
PCT/JP2022/016941
Publication Date:
December 15, 2022
Filing Date:
March 31, 2022
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C1/00; C08K3/04; C08K3/36; C08L9/00; C08L9/06; C08L45/00
Domestic Patent References:
| WO2016104142A1 | 2016-06-30 | |||
| WO2015079703A1 | 2015-06-04 |
Foreign References:
| JP2017071682A | 2017-04-13 | |||
| US20190144643A1 | 2019-05-16 | |||
| JP2019031659A | 2019-02-28 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
Download PDF:
Previous Patent: INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING SYSTEM, AND INFORMATION PROCESSING METHOD FOR ...
Next Patent: BAG
Next Patent: BAG