Tire with low volatile alcohol emission rubber tread with compositional limitations
US7262254B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 2005 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Sep 10, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/548
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a tire having a tread of a rubber composition with compositional limitations containing minimal, if any, of in situ formed volatile alcohol byproduct. The tread component rubber composition contains a combination or pre-hydrophobated silica reinforcement and siloxane functionalized styrene/butadiene copolymer elastomer. The pre-hydrophobated silica is prepared, prior to mixing with the elastomer(s), by reacting hydroxyl groups (e.g. silanol groups) contained on the surface of a precipitated silica with an alkoxyorganomercaptosilane or with a bis-3(triethoxysilylpropyl)polysulfide which contains an average of from 2 to 4 connecting sulfur atoms in its polysulfidic bridge to form a composite thereof which may optionally include an alkyl silane. The volatile alcohol byproduct (e.g. ethanol) therefrom is thereby removed from the pre-hydrophobated silica composite prior to its introduction into the rubber composition(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.