Run flat tire
US-2015306921-A1 · Oct 29, 2015 · US
Run flat tire
US9849735B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9849735-B2 |
| Application number | US-201514813525-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 30, 2015 |
| Priority date | Aug 1, 2014 |
| Publication date | Dec 26, 2017 |
| Grant date | Dec 26, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A run flat tire having improved run flat durability is provided. The run flat tire has a side wall part reinforced by a side reinforcing rubber part, and the side reinforcing rubber part is formed by a rubber composition which comprises 100 parts by mass of a diene rubber containing natural rubber and polybutadiene rubber, and from 0.1 to 4.0 parts by mass of a mercaptobenzimidazole compound.
First claim
Opening claim text (preview).
What is claimed is: 1. A run flat tire having a side wall part reinforced by a side reinforcing rubber part, wherein the side reinforcing rubber part is formed by a rubber composition which comprises 100 parts by mass of a diene rubber containing natural rubber and polybutadiene rubber, and from 0.5 to 1.2 parts by mass of a mercaptobenzimidazole compound, which is 2-mercaptobenzimidazole or the metal salt thereof, or at least one 2-mercaptobenzimidazole type compound selected from 2-mercaptobenzimidazole having at least one alkyl substituent in an aromatic ring and the metal salt thereof, and the rubber composition further comprises a phenol type thermosetting resin and a methylene donor, and a mass ratio of the contained amount of the phenol type thermosetting resin to the amount of the methylene donor contained is 1.5 times or more. 2. The run flat tire according to claim 1 , wherein the rubber composition has a ratio (M50H/M50N) of tensile stress (M50H) in 50% elongation at a measurement temperature of 100° C. to tensile stress (M50N) in 50% elongation at a measurement temperature of 23° C. of from 1.0 to 1.3. 3. The run flat tire according to claim 2 , wherein the rubber composition further contains at least one age resister selected from the group consisting of an aromatic secondary amine type age resister, a phenol type age resister, a sulfur type age resister and a phosphite type age resister, and a quinoline type age resister. 4. The run flat tire according to claim 1 , wherein the rubber composition further contains at least one age resister selected from the group consisting of an aromatic secondary amine type age resister, a phenol type age resister, a sulfur type age resister and a phosphite type age resister, and a quinoline type age resister. 5. The run flat tire according to claim 1 , wherein the amount of the phenol type thermosetting resin is from 1 to 10 parts by mass per 100 parts by mass of the diene rubber.
Assignees
Inventors
Classifications
Compositions of the sidewall inserts, e.g. for runflat · CPC title
Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons · CPC title
of metals · CPC title
Sulfur · CPC title
Manufacture of articles or shaped materials containing macromolecular substances (manufacture of semi-permeable membranes B01D67/00 - B01D71/00) · CPC title
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Frequently asked questions
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- What does patent US9849735B2 cover?
- A run flat tire having improved run flat durability is provided. The run flat tire has a side wall part reinforced by a side reinforcing rubber part, and the side reinforcing rubber part is formed by a rubber composition which comprises 100 parts by mass of a diene rubber containing natural rubber and polybutadiene rubber, and from 0.1 to 4.0 parts by mass of a mercaptobenzimidazole compound.
- Who is the assignee on this patent?
- Toyo Tire & Rubber Co
- What technology area does this patent fall under?
- Primary CPC classification B60C17/0009. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 26 2017 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).