Rubber composition and tire obtained therefrom

Patent metadata

Field	Value
Publication number	US-10836884-B2
Application number	US-201615767464-A
Country	US
Kind code	B2
Filing date	Oct 21, 2016
Priority date	Oct 22, 2015
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

Provided are a rubber composition excellent in fracture resistance, wear resistance, and on-ice performance, and a tire obtained therefrom. There are provided a rubber composition containing: a diene-based rubber component; a short fiber; and a surface active agent, in which the surface active agent contains at least one material selected from the group consisting of a fatty acid polyhydric alcohol ester, a nonionic ester type surface active agent, an alkanolamide type surface active agent, and a sulfonic acid type surface active agent, and a tire obtained from the rubber composition, more particularly a studless tire.

First claim

The invention claimed is:

1. A rubber composition comprising: a diene-based rubber component; a short fiber; and a surface active agent, wherein the surface active agent contains a fatty acid polyhydric alcohol ester, a nonionic ester surface active agent, an alkanolamide surface active agent, and a sulfonic acid surface active agent.

2. The rubber composition according to claim 1 , further comprising a foaming agent.

3. The rubber composition according to claim 2 , wherein the short fiber and the surface active agent are blended in advance with each other to form a composite, and the composite is compounded.

4. The rubber composition according to claim 3 , wherein in relation to 100 parts by mass of the surface active agent, 40 to 70 parts by mass of a nonionic ester surface active agent is contained.

5. The rubber composition according to claim 2 , wherein in relation to 100 parts by mass of the surface active agent, 40 to 70 parts by mass of a nonionic ester surface active agent is contained.

6. The rubber composition according to claim 1 , wherein the short fiber and the surface active agent are blended in advance with each other to form a composite, and the composite is compounded.

7. The rubber composition according to claim 6 , wherein in relation to 100 parts by mass of the surface active agent, 40 to 70 parts by mass of a nonionic ester surface active agent is contained.

8. The rubber composition according to claim 1 , wherein in relation to 100 parts by mass of the surface active agent, 40 to 70 parts by mass of a nonionic ester surface active agent is contained.

9. A tire using the rubber composition according to claim 1 .

10. The tire according to claim 9 being a studless tire.

11. A tire using the rubber composition according to claim 2 .

12. A tire using the rubber composition according to claim 6 .

13. A tire using the rubber composition according to claim 8 .

14. A tire using the rubber composition according to claim 3 .

Assignees

• Bridgestone Corp

Inventors

• Yabe Yudai

Classifications

• C08L101/00

  Compositions of unspecified macromolecular compounds · CPC title

• C08K5/103

  with polyalcohols · CPC title

• B29B7/28

  for measuring, controlling or regulating, e.g. viscosity control {(B29B7/242 takes precedence)} · CPC title

• C08K7/02

  Fibres or whiskers · CPC title

• C08K2201/013

  Additives applied to the surface of polymers or polymer particles · CPC title