| abstract |
The present invention provides a modified polymer that enhances the interaction with carbon black and silica when used in a rubber composition containing carbon black and / or silica, and is excellent in low heat buildup, fracture resistance and wear resistance. A rubber composition and a tire using a modified polymer are provided. The following general formula (1) [Wherein, A 1 or A 2 represents a nitrogen atom or C—R 13 ; R 1 , R 2 or R 13 represents a hydrogen atom or a hydrocarbon group; R 3 or R 4 represents a hydrocarbon group; X 1 is a hydrocarbon group, and the group may contain an ether structure, a thioether structure, a hydroxyl group, a thiol group and an alkali metal compound, an alkaline earth metal compound or an alkylsilyl compound thereof. n is an integer of 1 to 3. ] A modified polymer obtained by reacting the compound represented by the above with a polymer having an active metal site, and a rubber composition using the modified polymer, particularly a tire. [Selection figure] None |