Rubber composition for tire
US10125245B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2015 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Oct 16, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L65/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is a rubber composition for a tire containing a rubber component including 15 to 55 wt % of an end modified group-containing cycloolefin ring-opening polymer having a glass transition temperature of −120 to −90° C. and 45 to 85 wt % of an end modified group-containing solution polymerized conjugated diene polymer having a glass transition temperature of −60 to −10° C. and having an aromatic vinyl monomer unit content ratio of more than 30 wt % and 50 wt % or less, a silica, and a silane coupling agent including a monosulfide group and/or a thiol group, wherein the content of the silica with respect to 100 parts by weight of the rubber component is 30 to 200 parts by weight, and the content of the silane coupling agent including a monosulfide group and/or a thiol group with respect to 100 parts by weight of the silica is 0.3 to 20 parts by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.