RUBBER COMPOSITION AND PNEUMATIC TIRE USING SAME

Title:

RUBBER COMPOSITION AND PNEUMATIC TIRE USING SAME

Document Type and Number:

WIPO Patent Application WO/2016/199910

Kind Code:

A1

Abstract:

Provided is a rubber composition configured so as to improve rubber hardness to a level beyond that of the prior art. The rubber composition is characterized by comprising a diene rubber and a reinforcing filler, said diene rubber containing a styrene-butadiene copolymer component that comprises at least one styrene-butadiene copolymer and in which: (1) the content of bound styrene is 5-50 wt%; (2) the total styrene content of an ozone decomposition component S1 including one styrene-derived unit and an ozone decomposition component S1V1 including one of each of a styrene-derived unit and a 1,2-bonded butadiene-derived unit is less than 80 wt% of the bound styrene content, and the total styrene content of the ozone decomposition component S1V1 is 10 wt% or more of the bound styrene content; (3) the area intensity of an ozone decomposition component S1V2 including one styrene-derived unit and two 1,2-bonded butadiene-derived units is less than 15% of the area intensity of all ozone decomposition products containing a styrene-derived unit; and (4) the vinyl content of the butadiene part is 50% or more.

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Inventors:

SEKINE YUKO (JP)
ASHIURA MAKOTO (JP)
SAKAI RYOSUKE (JP)
YATSUYANAGI FUMITO (JP)

Application Number:

PCT/JP2016/067423

Publication Date:

December 15, 2016

Filing Date:

June 10, 2016

Export Citation:

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Assignee:

YOKOHAMA RUBBER CO LTD (JP)

International Classes:

C08L9/06; B60C1/00; C08K3/04; C08K3/36; C08L7/00; C08L9/00

Foreign References:

JP2011252124A	2011-12-15
JP2013185092A	2013-09-19
JP2000038423A	2000-02-08
JP2000178378A	2000-06-27

Other References: