RUBBER COMPOSITION FOR TIRE

摘要

PROBLEM TO BE SOLVED: To provide a rubber composition for tires in which processability of a silica-formulated rubber composition is improved. SOLUTION: The rubber composition for tires comprises 100 pts.wt. rubber, 15-150 filler containing 10-100 pts.wt. silica, 3-octanoylthio-1-propyltriethoxysilane (hereinafter referred to as NXT silane) represented by formula (I) in an amount of 0.5-20 wt% based on silica weight and a tetraalkoxy compound represented by formula (II) (wherein A is an element selected from a group consisting of IVA group and IVB group of element periodic table; R is independently a hydrogen atom or a 1-24C hydrocarbon group) in an amount of 0.1-20 wt% based on NXT silane weight. The pneumatic tire is obtained by using the rubber composition for tires. COPYRIGHT: (C)2006,JPO&NCIPI