COPOLYMER, CONTAINING POLAR GROUPS, RUBBER MIXTURE AND STUDLESS TYRE Russian patent published in 2014 - IPC C08F236/04 C08L9/00 B60C1/00 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to a copolymer, containing polar groups, which can be used to obtain a rubber mixture, suitable for manufacturing winter tyres. Claimed is the copolymer, containing the polar groups, obtained by copolimerisation of a conjugated diene compound and a vinyl compound, containing the polar group, with the content of cis-double bonds in the conjugated diene compound constituting not less than 80 mol.%, and the vinyl compound including a polymerisable unsaturated bond and the polar group, representing a hydroxyl group, -NR₂ or group -Si(OR)_k(R)_3-k, where R is hydrogen or C₁-C₈hydrocarbon group, k is an integer number from 1 to 3, with a carbon atom, forming an unsaturated bond, and a carbon atom, connected to the polar group, being connected via at least one carbon atom. Also claimed are the rubber mixture, which contains the claimed copolymer, and a winter tyre, obtained from such a rubber mixture.

EFFECT: claimed copolymer makes it possible to manufacture the winter tyre, which possesses a balanced combination of high resistance to abrasive wear, exploitation characteristics in movement on ice and stable control in movement on a dry road surface.

11 cl, 4 tbl, 23 ex