| abstract |
The present invention relates to a self-sealing elastomeric composition which can be used in particular as a puncture resistant layer in pneumatic articles, wherein at least the composition comprises at least two solid elastomers, ie polybutadiene elastomers or butadiene copolymers called "elastomer A" And blends of natural rubber elastomers or synthetic polyisoprene, referred to as "Elastomer B" (weight ratio of Elastomer A: Elastomer B ranges from 10:90 to 90:10); Between 30 phr and 90 phr of hydrocarbon resin; And fillers from 0 phr to less than 120 phr with less than 0 phr to 30 phr of reinforcing filler (“phr” means parts by weight per 100 parts by weight of solid elastomer). The invention also relates to pneumatic articles, such as pneumatic tires, with a puncture resistant layer comprising the composition of the invention. In order to form an airtight, perforated laminate in pneumatic articles, the perforated layer is advantageously associated with an airtight layer, for example based on butyl rubber or TPS elastomer. |