Inflatable object provided with a gas-tight layer containing a thermoplastic elastomer and a hydrocarbon-based resin
US9914328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2011 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Mar 16, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/322
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A pneumatic object is provided with a layer that is airtight to inflation gases. The layer includes an elastomer composition having at least a thermoplastic elastomer (TPE), as a sole elastomer or as a predominant elastomer by weight, and a hydrocarbon resin. A glass transition temperature of the hydrocarbon resin is above 0° C. The TPE is a copolymer that includes at least a central polyisobutylene block. Optionally, the elastomer composition includes an extender oil. Also optionally, the elastomer composition includes a platy filler selected from a group that includes graphites and phyllosilicates, such as micas, clays, and talcs. The pneumatic object may be an inner tube or a pneumatic tyre for a motor vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.