| abstract |
A method for increasing the hardness of silica/rubber mixtures includes blending with the mixture at least one silane and a hardness-increasing amount of at least one member selected from the group consisting of thixotropic fumed silica, precipitated silica and an MQ resin, wherein Q is SiO 4/2 , M is R 1 R 2 R 3 SiO 1/2 , and R 1 ,R 2 ,and R 3 are the same or different functional or non-functional organic groups, carbon black, a thermoplastic resin or a thermosetting resin. |