Rubber composition, particularly for tire tread

Abstract

A rubber mixture, in particular for the tread of a tire, based on at least one polymer that is from the group of diene rubbers and respectively contains 5 to 100 parts by weight finely distributed, precipitated silicic acid, 0 to 80 parts by weight carbon black, if need be 0.2 to 10 parts by weight silane coupling agent, and 0.5 to 20 parts by weight of at least one non-aromatic, viscosity-reducing substance with regard to 100 parts by weight rubber. The viscosity-reducing, non-aromatic substance is based exclusively on the elements carbon, hydrogen, and oxygen and has a region with at least two hydroxyl groups that exist in the form of 1,2-diol or 1,3-diol, and a region of at least two chemically bonded carbon atoms, wherein neither the chemically bonded carbon atoms nor their chemically bonded neighboring carbon atoms are substituted with oxygen.

Dependencies are inferred from the claim text.