Pneumatic object provided with a gas-tight layer comprising a styrene thermoplastic elastomer and a polyphenylene ether

1. An inflatable article comprising an elastomer layer that is airtight to at least one inflation gas used to inflate the article,

wherein the elastomer layer includes:

a styrene thermoplastic elastomer;

a polyphenylene ether; and

a polyisobutylene extending oil at a content of between 67 and 100 phr,

wherein the styrene thermoplastic elastomer is a styrene/isobutylene/styrene triblock copolymer (SIBS),

wherein the polyphenylene ether is poly(2,6-dimethyl-1,4-phenylene ether); and

wherein a content by weight of polyphenylene ether represents between 0.5 and 2 times a content by weight of styrene present in the styrene thermoplastic elastomer.

2. The inflatable article according to claim 1 , wherein the polyphenylene ether has a glass transition temperature of greater than 150° C.

3. The inflatable article according to claim 1 , wherein the elastomer layer includes a plurality of elastomers, and

wherein the styrene thermoplastic elastomer is at a predominant content by weight relative to all of the plurality of elastomers of the elastomer layer.

4. The inflatable article according to claim 1 , wherein the styrene thermoplastic elastomer is a sole elastomer of the elastomer layer.

5. The inflatable article according to claim 1 , wherein the elastomer layer further includes a platy filler at a content of between 2% and 30% by volume.

6. The inflatable article according to claim 1 , wherein the inflatable article is a rubber article.

7. The inflatable article according to claim 6 , wherein the rubber article is a tire.

8. The inflatable article according to claim 6 , wherein the inflatable article is an inner tube.

9. The inflatable article according to claim 8 , wherein the inner tube is a tire inner tube.