RUBBER COMPOSITION FOR TIRE TREAD AND PNEUMATIC TIRE USING SUCH COMPOSITION Russian patent published in 2020 - IPC C08L101/00 C08L9/00 C08L7/00 C08K3/36 C08K9/10 B60C1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a rubber composition for tire tread. Rubber composition for tire tread contains diene rubber, 20–100 pts.wt. silica at 100 pts.wt. diene rubber and 0.3–30 pts.wt. of cured product per 100 pts.wt. diene rubber. Diene rubber contains natural rubber and modified butadiene rubber with an end polyorganosiloxane group. Content of natural rubber in diene rubber ranges from 30 to 90 wt.% content of modified butadiene rubber in diene rubber ranges from 10 to 70 wt%. Solidified product is obtained by hardening a cross-linkable oligomer or polymer which is not mixed with diene rubber. Hardness of JIS A hardened product ranges from 3 to 45.

EFFECT: invention allows to ensure excellent characteristics of the tire on ice, characteristics of adhesion on wet coating, low heat accumulation and wear resistance.

7 cl, 1 dwg, 1 tbl