Pneumatic object having a gas tight layer containing a specific SIBS thermoplastic elastomer
US9108466B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 17, 2009 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Jul 10, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10495
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Inflatable article equipped with an elastomer layer impermeable to inflation gases, said elastomer layer comprising at least, as the predominant elastomer, a thermoplastic SIBS elastomer comprising a polyisobutylene block comprising an amount of units derived from one or more conjugated dienes ranging from 0.5% to 6% by weight relative to the weight of the polyisobutylene block, and, at least one of the ends of the polyisobutylene block, a styrenic block representing at most 16% by weight of the total weight of the block copolymer. Preferably the airtight elastomer layer also comprises, as a plasticizing agent, an extender oil for the SIBS elastomer. The inflatable article of the invention is, in particular, an inner tube or a pneumatic tire for a motor vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.