Rubber composition for tire and pneumatic tire
US-9890271-B2 · Feb 13, 2018 · US
Rubber composition for tire
US10808107B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10808107-B2 |
| Application number | US-201716310392-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 15, 2017 |
| Priority date | Jun 27, 2016 |
| Publication date | Oct 20, 2020 |
| Grant date | Oct 20, 2020 |
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- Title
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Abstract
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A rubber composition for a tire contains: per 100 parts by mass of a diene rubber containing 50 parts by mass or greater of an emulsion-polymerized styrene-butadiene rubber having a bonded styrene content of 30 mass % or less, from 20 to 40 parts by mass of a butadiene rubber, and WN parts by mass of a natural rubber, WT parts by mass of an aromatic modified terpene resin and WS parts by mass of a silica. A ratio (WN/WS) of a compounded amount of the natural rubber (WN) to a compounded amount of the silica (WS) is from 0.4 to 1.0, and a ratio (WS/WT) of the compounded amount of the silica (WS) to a compounded amount of the aromatic modified terpene resin (WT) is from 2.0 to 5.0.
First claim
Opening claim text (preview).
The invention claimed is: 1. A rubber composition for a tire, the rubber composition comprising: per 100 parts by mass of a diene rubber containing 50 parts by mass or greater of an emulsion-polymerized styrene-butadiene rubber having a bonded styrene content of 30 mass % or less, from 28 to 40 parts by mass of a butadiene rubber, and WN parts by mass of a natural rubber, WT parts by mass of an aromatic modified terpene resin, and WS parts by mass of a silica; a ratio (WN/WS) of a compounded amount of the natural rubber (WN) to a compounded amount of the silica (WS) being from 0.4 to 1.0; and a ratio (WS/WT) of the compounded amount of the silica (WS) to a compounded amount of the aromatic modified terpene resin (WT) being from 2.0 to 5.0. 2. The rubber composition for a tire according to claim 1 , further comprising from 50 to 120 parts by mass of a filler per 100 parts by mass of the diene rubber, the filler containing 10 mass % or greater of the silica, and a CTAB specific surface area of the silica being from 120 to 180 m 2 /g. 3. A pneumatic tire comprising the rubber composition for a tire described in claim 1 . 4. A pneumatic tire comprising the rubber composition for a tire described in claim 2 .
Assignees
Inventors
Classifications
Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition · CPC title
Compositions of the sidewalls · CPC title
containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title
- B60C1/0016Primary
Compositions of the tread · CPC title
Use of organic ingredients · CPC title
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- What does patent US10808107B2 cover?
- A rubber composition for a tire contains: per 100 parts by mass of a diene rubber containing 50 parts by mass or greater of an emulsion-polymerized styrene-butadiene rubber having a bonded styrene content of 30 mass % or less, from 20 to 40 parts by mass of a butadiene rubber, and WN parts by mass of a natural rubber, WT parts by mass of an aromatic modified terpene resin and WS parts by mass o…
- Who is the assignee on this patent?
- Yokohama Rubber Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60C1/0016. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Oct 20 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).