Resin composition for tires and pneumatic tire
US-2024140139-A1 · May 2, 2024 · US
Cold weather tire
US2018093530A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018093530-A1 |
| Application number | US-201715720096-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 29, 2017 |
| Priority date | Sep 30, 2016 |
| Publication date | Apr 5, 2018 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
Provided is a cold weather tire achieving a balanced improvement in fuel economy, abrasion resistance, performance on ice and snow, and high-speed performance (handling stability, grip performance) on snow- and ice-free roads at low temperatures. The cold weather tire includes a cap tread formed of a rubber composition that contains: a rubber component including polybutadiene rubber, styrene butadiene rubber, and natural rubber and/or polyisoprene rubber; and a filler, the rubber composition having a combined amount of the natural rubber, polyisoprene rubber, and polybutadiene rubber of 80% by mass or more, an amount of the polybutadiene rubber of 30% by mass or more, and an amount of the styrene butadiene rubber of 0.3-10% by mass, each based on 100% by mass of the rubber component, the filler including 60% by mass or more of silica based on 100% by mass of the filler, the cap tread having cells and/or voids.
First claim
Opening claim text (preview).
1 . A cold weather tire, comprising a cap tread, the cap tread being formed of a rubber composition for cap treads that comprises: a rubber component including polybutadiene rubber, styrene butadiene rubber, and at least one of natural rubber or polyisoprene rubber; and a filler, the rubber composition having a combined amount of the natural rubber, the polyisoprene rubber, and the polybutadiene rubber of 80% by mass or more, an amount of the polybutadiene rubber of 30% by mass or more, and an amount of the styrene butadiene rubber of 0.3% to 10% by mass, each based on 100% by mass of the rubber component, the filler including 60% by mass or more of silica based on 100% by mass of the filler, the cap tread having cells or voids or both. 2 . The cold weather tire according to claim 1 , wherein the rubber composition for cap treads has a combined amount of the natural rubber, the polyisoprene rubber, and the polybutadiene rubber of 90% by mass or more, and an amount of the styrene butadiene rubber of 0.3% to 5% by mass, each based on 100% by mass of the rubber component. 3 . The cold weather tire according to claim 1 , wherein the rubber composition for cap treads comprises the silica in an amount of 50 parts by mass or more per 100 parts by mass of the rubber component. 4 . The cold weather tire according to claim 1 , wherein the polybutadiene rubber in the rubber composition for cap treads has a cis content of 70% by mass or more. 5 . The cold weather tire according to claim 1 , wherein the rubber composition for cap treads comprises a plasticizer in an amount of 20 parts by mass or more per 100 parts by mass of the rubber component.
Assignees
Inventors
Classifications
Mixtures of at least two compounding ingredients belonging to different one-dot groups · CPC title
with cap and base layers · CPC title
Copolymers with styrene · CPC title
Silica · CPC title
Copolymers with styrene · CPC title
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Frequently asked questions
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- What does patent US2018093530A1 cover?
- Provided is a cold weather tire achieving a balanced improvement in fuel economy, abrasion resistance, performance on ice and snow, and high-speed performance (handling stability, grip performance) on snow- and ice-free roads at low temperatures. The cold weather tire includes a cap tread formed of a rubber composition that contains: a rubber component including polybutadiene rubber, styrene bu…
- Who is the assignee on this patent?
- Sumitomo Rubber Ind
- 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 Thu Apr 05 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).