| abstract |
elastomer composition for pneumatic object with self-sealing property elastomer composition with self-sealing property, usable notably as an anti-perforation layer on a pneumatic object, based on at least (pce meaning parts by weight per hundred parts of solid elastomer) : a mixture of at least two solid elastomers, a polybutadiene elastomer or butadiene copolymer, referred to as "elastomer a", and a natural rubber elastomer or synthetic polyisoprene, said "elastomer b", the weight ratio elastomer a: elastomer b being in the range of 10:90 to 90:10; between 30 and 90 pce of a hydrocarbon resin; 0 to less than 120 parts of load and 0 to less than 30 parts of reinforcement. pneumatic object such as a pneumatic belt provided with an anti-perforation layer comprising a composition according to the invention; the anti-perforation layer is advantageously associated with an airtight layer, for example based on butyl rubber or tps elastomer, to constitute an air-tight and anti-perforation laminate in the pneumatic object. |