Rubber composition for tire tread and pneumatic tire comprising the same

Abstract

The present invention provides a rubber composition for a tire tread which can prepare a tire having improved grip properties under conditions of a high temperature, and a pneumatic tire comprising the same. The present invention relates to the rubber composition for a tire tread containing more than 5 parts by weight of a basic antioxidant based on 100 parts by weight of the diene rubber components, wherein a metallic compound is a metallic compound comprising (1) a metallic salt of an organic carboxylic acid or (2) an inorganic metallic salt and an acid, and the pneumatic tire having a tire tread comprising the same.

1 . A pneumatic tire having a tire tread comprising a rubber composition which comprises diene rubber components, a basic antioxidant and a metallic compound, wherein the metallic compound comprises magnesium methacrylate, and the basic antioxidant is present in an amount of more than 5 parts by weight based on 100 parts by weight of the diene rubber components. 
   
   
       2 . The pneumatic tire of  claim 1 , wherein the magnesium methacrylate is present in an amount of 0.5 to 20 parts by weight based on 100 parts by weight of the diene rubber component. 
   
   
       3 . The pneumatic tire of  claim 1 , wherein the antioxidant is present in an amount of 5 to 20 parts by weight based on 100 parts by weight of the diene rubber component.