Tire sidewall composition and tire sidewall
US-2024392114-A1 · Nov 28, 2024 · US
Rubber composition for sidewalls, and pneumatic tire using same
US10723176B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10723176-B2 |
| Application number | US-201615556285-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 3, 2016 |
| Priority date | Mar 6, 2015 |
| Publication date | Jul 28, 2020 |
| Grant date | Jul 28, 2020 |
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- Title
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Abstract
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The present technology provides a rubber composition for sidewalls containing, a diene rubber, from 10 to 120 parts by mass of a carbon black, and from 3 to 30 parts by mass of an acid-modified polyolefin having a melting point of from 100 to 150° C. per 100 parts by mass of the diene rubber, a main chain of the acid-modified polyolefin being a homopolymer of an olefin; and a pneumatic tire using the same in sidewalls thereof.
First claim
Opening claim text (preview).
The invention claimed is: 1. A rubber composition for sidewalls comprising: a diene rubber containing natural rubber and butadiene rubber, a content of the butadiene rubber being not less than 30 parts by mass per 100 parts by mass of the diene rubber and a total content of both of the natural rubber and the butadiene rubber being greater than 50 mass % of the diene rubber; from 10 to 120 parts by mass of a carbon black; and from 3 to 30 parts by mass of an acid-modified polyolefin having a melting point of from 100 to 150° C. per 100 parts by mass of the diene rubber, a main chain of the acid-modified polyolefin being a homopolymer of an olefin. 2. The rubber composition for sidewalls according to claim 1 , wherein a main chain of the acid-modified polyolefin is a polyethylene, polypropylene, or polybutene. 3. The rubber composition for sidewalls according to claim 1 , wherein the acid-modified polyolefin is a polyolefin modified with a carboxylic acid or an acid anhydride. 4. The rubber composition for sidewalls according to claim 1 , wherein a melt mass flow rate of the acid-modified polyolefin at 190° C. is from 1.0 to 8.0 g/10 min. 5. A pneumatic tire using the rubber composition for sidewalls according to claim 1 as a sidewall. 6. The rubber composition for sidewalls according to claim 2 , wherein the acid-modified polyolefin is a polyolefin modified with a carboxylic acid or an acid anhydride. 7. The rubber composition for sidewalls according to claim 6 , wherein a melt mass flow rate of the acid-modified polyolefin at 190° C. is from 1.0 to 8.0 g/10 min. 8. A pneumatic tire using the rubber composition for sidewalls according to claim 7 as a sidewall.
Assignees
Inventors
Classifications
Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition · CPC title
Waxes · CPC title
Compositions of oils, fats or waxes; Compositions of derivatives thereof · CPC title
Carbon · CPC title
modified by chemical after-treatment (saponified copolymers C08L23/0861; unsaturated acid salts C08L23/0876) · CPC title
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- What does patent US10723176B2 cover?
- The present technology provides a rubber composition for sidewalls containing, a diene rubber, from 10 to 120 parts by mass of a carbon black, and from 3 to 30 parts by mass of an acid-modified polyolefin having a melting point of from 100 to 150° C. per 100 parts by mass of the diene rubber, a main chain of the acid-modified polyolefin being a homopolymer of an olefin; and a pneumatic tire usi…
- Who is the assignee on this patent?
- Yokohama Rubber Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60C1/0025. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jul 28 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).