Pneumatic tire having tread with hydroxy-terminated polybutadiene
US10618352B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2018 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Sep 25, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/035
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a pneumatic tire comprising a tread, the tread comprising a rubber composition comprising a diene elastomer, a pre-hydrophobated precipitated silica, a blocked mercaptosilane, a terpene-phenol resin, and a low molecular weight polybutadiene functionalized with a hydroxyl functional group, wherein the pre-hydrophobated precipitated silica is hydrophobated prior to its addition the rubber composition by treatment with at least one silane selected from the group consisting of alkylsilanes, alkoxysilanes, organoalkoxysilyl polysulfides and organomercaptoalkoxysilanes and optionally at least one dispersing aid selected from the group consisting of fatty acids, diethylene glycols, polyethylene glycols, fatty acid esters of hydrogenated or non-hydrogenated C5 or C6 sugars, polyoxyethylene derivatives of fatty acid esters of hydrogenated or non-hydrogenated C5 or C6 sugars.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.