The use of a rubber mixture for the formation of inner air schla psittacosis for tires or of at least a continuous layer in tubeless pneumatic tire

摘要

A composition comprises (a) 100 parts of a styrene-butadiene copolymer having 10 to 60% styrene, (b) 20 to 80 parts of a solid asphalt of ring and ball-softening point between 70 and 115 DEG F. and low asphaltene content and between 40 and 140 parts of laminar particles of hydrous magnesium silicate of properties: 95-99% pure, 0.1 to 0.3% free moisture, maximum particle size of 15 microns, specific surface of 10 to 20 m.2/g., a mean refraction of 1.59 and no magnetizable iron or heavy metal salts deleterious to rubber.