RESIN MIXTURE FOR TREAD AND METHOD FOR ITS PRODUCTION Russian patent published in 2008 - IPC C08L9/00 C08K3/36 C08K5/548 C08J3/20 C08C19/30 B60C1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to the cross-linkable or cross-linked resin mixture in presence of the cross-linking system containing at least one compound selected from sulfur, peroxide and bismaleid, which can be used for producing tread; the mixture is based on at least enhancing inorganic filler, diene elastomer which contains along its chain the functional groups of the carbonic acid, and the binding agent selected from the group of the polysulfonated alkoxysilanes; the said elastomer is obtained by radical co-polymerisation in the emulsifying solution of at least one conjugated diene monomer with the co-monomer precursor which can be hydrolised or oxidised till carbonic acid, to receive the intermediate diene elastomer containing along its chain the functional precursor groups of the said acid; after that, the said functional precursor groups are hydrolised or oxidised till elastomer which contains along its chain the functional groups of the carbonic acid. The invention also relates to the method for producing the said cross-linkable or cross-linked resin mixture, containing the stages (i) and (ii) and to the tread containing such resin mixture, and to the tire with reduced rolling resistance and containing the said tread. The specific method of entering the functional groups of the carbonic acid into elastomer which is used in accordance with the invention, forms the linear structure with reduced viscosity, due to this, the resin mixture containing such diene elastomer has, when unlinked, the improved recycling ability and, when linked, the minimised hysteresis losses at low and high deformation rates, and improved strengthening.

EFFECT: treads containing said resin mixture and tires with such tread have reduced rolling resistance.

31 cl, 1 tbl