Rubber composition for aircraft tire treads
US10576785B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2017 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Jan 2, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2200/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Tire treads, especially tire treads for aircraft or for heavy vehicles, formed from a material that is based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, per 100 parts by weight of rubber, between 40 phr and 100 phr of a polyisoprene rubber, between 0 and 60 phr of a highly unsaturated diene rubber and between 1 phr and 25 phr of a polyterpene resin having a glass transition temperature of between 50° C. and 120° C. The rubber composition further includes between 0.1 phr and 10 phr of a poly-thiosulfate anti-reversion agent having the formula: MO3S—S—X—S—SO3M wherein X is an alkylene radical or a radical comprising two or more alkylene units, pairs of which units being linked through an oxygen or a sulfur atom, through a group —SO2—, —NH—, —NH2+—, —N(C1-16alkyl)- or —COO—, or through an arylene or cycloalkylene radical and M is a metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.