RUBBER COMPOSITION FOR TIRE TREAD Russian patent published in 2024 - IPC B60C1/00 C08L9/06 C08L15/00 

Abstract RU 2818955 C2

FIELD: chemistry.

SUBSTANCE: invention relates to tires with tread. Disclosed is a tire, the tread of which contains a rubber composition based on: elastomer matrix containing from 25 to 95 weight parts per 100 weight parts of an elastomer (phr) of a copolymer based on butadiene and styrene, having a glass transition temperature of less than −70 °C, and from 5 to 75 phr of polybutadiene, wherein the elastomeric matrix optionally further contains less than 15 phr of the isoprene elastomer; at least one reinforcing filler containing more than 50% by weight of reinforcing inorganic filler, wherein content of reinforcing inorganic filler in composition is in range from 80 to 200 phr; from 25 to 100 phr of at least one plasticizing resin, having a glass transition temperature of more than 20 °C, and a vulcanisation system containing molecular sulphur and/or at least one sulphur donor agent, where the sulphur content is between 0.5 and 12 phr.

EFFECT: disclosed tire has improved combination of such properties as rolling resistance, grip on snow-covered ground and wear resistance of tires intended for movement on snow-covered ground.

14 cl, 2 tbl

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RU 2 818 955 C2

Authors

Nourry Christine

Voisin Floriandre

Dates

2024-05-07Published

2020-07-06Filed