MICROGEL-CONTAINING PROTECTOR MIXTURE FOR WINTER TIRES Russian patent published in 2017 - IPC C08L9/06 C08L9/00 C08L7/00 C08K3/36 C08K5/548 B60C1/00 C08J3/20 

FIELD: chemistry.

SUBSTANCE: vulcanizable rubber mixture comprises, at least, the following components: 100 pts wt of the oil-free rubber matrix that contains a) 15 to 79 pts wt of L-SBR solution styrene butadiene rubber, which does not contain oil with a glass transition temperature Tg_(L-SBR) in the range of -70 to -10°C, b) 20 to 75 pts wt of 1,4-cis-polybutadiene BR, which does not contain oil with a glass transition temperature Tg_(BR) in the range of -95 to -115°C, c) 1 to 37.5 pts wt of natural rubber NR, oil-free and/or synthetic polyisoprene IR with a glass transition temperature Tg_(NR) in the range of -50 to -75°C; hydroxyl group-containing microgel based on polybutadiene; hydroxyl group-containing oxide filler; polysulphide-containing alkoxysilane; a curing agent.

EFFECT: invention makes it possible to increase the resistance to reversion during vulcanization of the rubber mixture, to produce a rubber mixture with optimum adhesion to ice-covered and snow-covered road, as well as low rolling resistance and high abrasion resistance.

27 cl, 1 dwg, 55 tbl