Title:
RUBBER COMPOSITION FOR TIRE
Document Type and Number:
WIPO Patent Application WO/2019/044888
Kind Code:
A1
Abstract:
Provided are: a rubber composition for a tire, the rubber composition being capable of producing a crosslinked product having excellent mechanical strength such as wear resistance; said crosslinked product; a tire tread partially using said composition or said crosslinked product, the tire tread having sufficient dry grip performance as well as excellent wet grip performance and ice grip performance and being capable of achieving improved steering stability; a bead filler; a tire belt; and a pneumatic tire. The rubber composition for a tire contains 0.1-50 parts by mass of a modified liquid diene-based rubber (B) having a functional group derived from a silane compound having a specific structure, and 20-200 parts by mass of a filler (C) with respect to 100 parts by mass of a solid rubber (A) having a glass transition temperature (Tg) of -10°C or lower, wherein the modified liquid diene-based rubber (B) satisfies (i)-(iv): (i) a weight average molecular weight (Mw) of no less than 1,000 and less than 15,000; (ii) a vinyl content of 70 mol% or less; (iii) 1-20 functional groups on average per one molecule of the modified liquid diene-based rubber (B); and (iv) a glass transition temperature of 0°C or lower.
Inventors:
KANBARA HIROSHI (JP)
KODA DAISUKE (JP)
KODA DAISUKE (JP)
Application Number:
PCT/JP2018/031911
Publication Date:
March 07, 2019
Filing Date:
August 29, 2018
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08L21/00; B60C1/00; B60C15/06; C08K3/04; C08K3/36; C08K5/54; C08L7/00; C08L9/00; C08L15/00
Domestic Patent References:
| WO2018043699A1 | 2018-03-08 | |||
| WO2018043700A1 | 2018-03-08 | |||
| WO2013115011A1 | 2013-08-08 |
Foreign References:
| JP2013249359A | 2013-12-12 | |||
| JPS61197646A | 1986-09-01 | |||
| JP2016113588A | 2016-06-23 | |||
| JP2016028235A | 2016-02-25 | |||
| JP2016060789A | 2016-04-25 | |||
| JP2014098102A | 2014-05-29 | |||
| JPS62112618A | 1987-05-23 | |||
| JP2011132298A | 2011-07-07 |
Other References:
See also references of EP 3677637A4
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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