PNEUMATIC TYRE EQUIPPED WITH INNER LAYER Russian patent published in 2021 - IPC B60C1/00 C08L7/00 C08L9/06 C08K3/04 B29D30/06 

FIELD: vehicle tyres.

SUBSTANCE: invention relates to a tyre at least one inner layer whereof contains a rubber composition based on at least an elastomeric matrix containing 10 to 40 phr (pts. wt. per 100 pts. wt. of elastomer) polyisoprene, 10 to 40 phr polybutadiene and 40 to 80 phr of a tin-functionalized styrene-butadiene copolymer, 10 to 80 phr of carbon black with a BET (Brunauer-Emmet-Teller method) specific surface area of more than 99 m²/g, and a cross-linking system.

EFFECT: compositions for the inner layer of the tyre according to the invention increase the speed of movement and loads to which large tyres intended for agricultural and construction equipment are subjected, while maintaining their service life; the compositions also allow extending the service life of such tyres under normal operating conditions.

15 cl, 1 tbl