Rubber composition and a tire
US12187895B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2022 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Jul 21, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/86
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a first aspect, the present invention is directed to a rubber composition comprising 70 phr to 95 phr of styrene butadiene rubber comprising at least 5 phr of a first styrene butadiene rubber having a glass transition temperature within a range of −49° C. to −15° C. and at least 45 phr of a second styrene butadiene rubber having a glass transition temperature within a range of −50° C. to −89° C., wherein the rubber composition comprises more of the second styrene butadiene rubber than of the first styrene butadiene rubber. Moreover, the rubber composition comprises 5 phr to 30 phr of one or more of natural rubber and synthetic polyisoprene; 135 phr to 200 phr of silica; and at least 55 phr of at least one hydrocarbon resin comprising at least one terpene resin having a glass transition temperature of at least 30° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.