Low hysteresis rubber elastomer
US8080603B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2006 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Dec 20, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L7/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Curable elastomer compositions and cured and/or curable articles made therefrom, the curable elastomer composition comprising an essentially unsaturated rubber elastomer, between 0.5 and 25 phr of a metal salt of a carboxylic acid, an effective amount of a peroxide curing agent for curing the elastomer composition and between 0.1 and 10. phr of a hysteresis-decreasing multifunctional curing coagent that decreases the hysteresis of the cured elastomer composition, wherein the hysteresis is measured using a rotorless shear rheometer as a loss tangent at 150° C., 41.85% strain and 10 Hz. The hysteresis of such a cured composition may decrease by at least 15% or alternatively, by at least 25%. The elastomer is useful in tires including, for example, the sidewall supports, the carcass reinforcement and the tread.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.