Tire tread reinforced with a silica of low specific surface area
US7300970B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2003 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Jun 1, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/86
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A tire tread incorporating an elastomeric composition reinforced by an inorganic filler, based on at least: Preferably, this silica furthermore has a disagglomeration rate α greater than 5×103 μm−1/min (measured in the ultrasound disagglomeration test). Compared with a conventional tread for “Green Tires” which is reinforced with a silica of higher specific surface area, the tread of the invention has an improved compromise of (wear resistance/rolling resistance/grip on wet ground) performances. The use of a very small amount of zinc makes it possible to overcome an increase in the induction delays during the vulcanization, when such a silica of low specific surface area is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.