SILICA-RUBBER MIXES WITH IMPROVED STRENGTH PROPERTIES Russian patent published in 2008 - IPC C08K5/548 C08K3/36 

FIELD: rubber industry.

SUBSTANCE: invention relates to inorganic extenders-containing elastomer compositions with improved strength properties and provides a method to increase strength of silica-diene rubber mixes, which method comprises mixing with indicated mix at least one organofunctional silane containing at least one alkoxy group per one silicon atom and strength-enhancing amount of at least one representative of the group consisting of thixotropic colloidal silica; precipitated silica; MQ resin wherein Q is SiO_4/2 and M is R¹R²R³SiO_1/2, in which R¹,^{R2, andR3 represent identical or different functional or non-functional organic groups; and carbon black.}

EFFECT: increased strength of silica-rubber mixes.

32 cl, 6 dwg, 20 ex