Title:
PARTICLE DISPERSION, RUBBER COMPOSITION, AND PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2021/075571
Kind Code:
A1
Abstract:
The present invention provides: a particle dispersion which, when used in a rubber composition, makes it possible to attain excellent processability, fuel-saving performance, tensile properties, and on-ice performance; a rubber composition containing the particle dispersion; and a pneumatic tire produced using the rubber composition. This particle dispersion comprises a diene-based polymer A having a number-average molecular weight of 1,000-100,000 and, dispersed therein, particles constituted of a polymer, wherein the particle-constituting polymer is a polymer C which is not a diene-based polymer, the particles have been surface-modified with a hydrocarbon group having 3-30 carbon atoms and/or a diene-based polymer D, the hydrocarbon group having 3-30 carbon atoms or the diene-based polymer D each independently having been bonded to the particle-constituting polymer C by urea, urethane, or amide bonds.
Inventors:
KAGEYAMA HIROKAZU (JP)
KIMURA KAZUSHI (JP)
KIMURA KAZUSHI (JP)
Application Number:
PCT/JP2020/039167
Publication Date:
April 22, 2021
Filing Date:
October 16, 2020
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C08L9/00; B60C1/00; C08G18/00; C08G18/10; C08K3/04; C08L101/02
Domestic Patent References:
| WO2017034033A1 | 2017-03-02 |
Foreign References:
| JPH05178946A | 1993-07-20 | |||
| JP2015221855A | 2015-12-10 | |||
| JP2012211316A | 2012-11-01 | |||
| JP2004511580A | 2004-04-15 | |||
| JPH10330720A | 1998-12-15 | |||
| JP2020132731A | 2020-08-31 | |||
| JPS5949026B2 | 1984-11-30 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
Download PDF: