The present invention provides a rubber composition capable of improving the rubber strength and fuel economy in a balanced manner, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition including a rubber component, carbon black, and a compound represented by formula (I) below, wherein the amount of the carbon black is 10 to 100 parts by mass per 100 parts by mass of the rubber component:
wherein R
1
and R
2
are the same as or different from each other, and each represent a hydrogen atom, a C1-C20 alkyl group, a C1-C20 alkenyl group, or a C1-C20 alkynyl group; M
r+
represents a metal ion; and r represents a valence of the metal ion.
本发明提供了一种橡胶组合物,能够在平衡的情况下改善橡胶强度和燃油经济性,以及由该橡胶组合物制成的气动轮胎。本发明涉及一种橡胶组合物,包括橡胶成分、碳黑和以下式(I)所表示的化合物,其中碳黑的量为橡胶成分的100份质量中的10至100份质量:其中R1和R2相同或不同,分别表示氢原子、C1-C20烷基、C1-C20烯基或C1-C20炔基;Mr+表示
金属离子;r表示
金属离子的价。