Rubber composition and pneumatic tire

Abstract

Abstract Provided is a rubber composition which is improved in a dispersibility of silica into rubber, a heat generating property and an abrasion property. The rubber composition comprises 15 to 85 parts by weight of silica per 100 parts by weight of a rubber component comprising natural rubber and/or diene base synthetic rubber and a tertiary amine compound represented by the following Formula (I) blended in a proportion of 1 to 15 % by weight based on the amount of silica described above: wherein R 1 represents an alkyl group, alkenyl group or alkoxyl group having 1 to 36 carbon atoms and hydroxy-substituted group thereof, a benzyl group, a benzyl group substituted with an alkyl group or alkenyl group having 4 to 36 carbon atoms, or a group represented by one of the following Formulas (II); and R 2 and R 3 represent independently an alkyl group or alkenyl group having 1 to 36 carbon atoms, a benzyl group, a cyclohexyl group and a hydroxy-substituted group thereof: wherein R 4 represents an alkyl group or alkenyl group having 1 to 36 carbon atoms; R 5 represents an ethylene group or a propylene group; X represents hydrogen, an alkyl group, alkenyl group, alkyloyl group or alkenyloyl group having 1 to 18 carbon atoms; A represents an alkylene group or hydroxyalkylene group having 2 to 6 carbon atoms; m is an integer of 1 to 10, and when m is 2 or more, respective A may be the same or different; and n is an integer of 1 to 10.

Inventors

• 👤 Shunji Araki
• 👤 Masaaki Kao Corporation TSUCHIHASHI
• 👤 Isao Kao Corporation NISHI

Bibliographic Details