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US 2006/0052507 A1Published application
Pneumatic tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorAkira Minakoshi
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AssigneeSumitomo Rubber Industries, Ltd.
InventorAkira Minakoshi
Estimating the term…
The present invention provides a pneumatic tire in which friction and abrasion resistance are compatible on the icy and snowy road. The present invention relates to a pneumatic tire having a part of a tread comprising a rubber composition containing less than 5 parts by weight of silica based on 100 parts by weight of a diene rubber containing at least 50% by weight of a polybutadiene rubber having at least 95% of cis-1,4 bond and carbon black in which the iodine adsorption is at least 100 g/kg and 24M4 dibutyl phthalate oil absorption is at least 90 ml/100 g, wherein the total amount of the silica and the carbon black is 30 to 40 parts by weight, and whrein the hardness of the above rubber composition at 0° C. is 35 to 47.
A pneumatic tire having a part of a tread comprising a rubber composition containing less than 5 parts by weight of silica based on 100 parts by weight of a diene rubber containing at least 50% by weight of a polybutadiene rubber having at least 95% of cis-1,4 bond and carbon black in which the iodine adsorption is at least 100 g/kg and 24M4 dibutyl phthalate oil absorption is at least 90 ml/100 g, wherein the total amount of the silica and the carbon black is 30 to 40 parts by weight,
Dependencies are inferred from the claim text.