VULCANIZING MIXTURE CONTAINING PARTIALLY HYDROGENATED VINYLARENE CONJUGATED DIENE BRANCHED POLYMERS Russian patent published in 2012 - IPC C08L15/00 C08L21/00 C08K3/36 B60C1/00 

FIELD: chemistry.

SUBSTANCE: The invention relates to polymer chemistry, in particular, to raw elastomer composition used to manufacture tire treads. The composition contains: (a1) from 30 to 90% by weight of partially hydrogenated vinylarene conjugated diene static elastomer copolymer; (a2) from 10 to 70% by weight of one or several diene rubbers. For the total quantity of rubber (a1 + a2) parts, which equals to 100, the following components are added, (b) from 10 to 150 phr of silicon dioxide; (c) from 0,1 to 20 phr of mixing agent based on silane and (d) from 0,1 to 10 phr or vulcanizing agent. The component (a1) of the composition is characterized by the fact that the partially hydrogenated vinylarene conjugated diene static elastomer copolymer has the structure with nodes which are statistically distributed in the macromolecule. The nodes branch out the polymer chains. Furthermore, the link between the said nodes and the said branches is the carbon-carbon link.

EFFECT: increased Mooney viscosity of the partially hydrogenated vinylarene conjugated diene copolymers with the abovementioned structure; improved general mechanical properties of the polymer matrix and properties of mixtures based on the dais rubbers.

10 cl, 4 tbl, 12 ex