| 摘要 |
The present invention is a rubber composition comprising 0.2 to 10 parts by weight of at least one compound selected from the group consisting of 2-mercaptobenzothiazole compound containing an alkoxy groups represented by the following general formulae (I), (II) and (III) based on 100 parts by weight of at least one rubber raw material selected from the group consisting of natural rubber and diene-based synthetic rubbers: wherein R1 represents an alkyl group, alkenyl group or cycloalkyl group having 1 to 8 carbon atoms; R2 represents a hydrogen atom or an amino group represented by -N(R3)R4; R3 and R4 each independently represent a hydrogen atom or an alkyl group or cyclohexyl group having 2 to 4 carbon atoms (wherein, R3and R4 do not simultaneously represent a hydrogen atom); R5 and R6 each independently represent an alkyl group, alkenyl group or cycloalkyl group having 1 to 8 carbon atoms; X represent a Zn atom, Cu atom or an amino group represented by >N-R9; R9 represents an alkyl group or cyclohexyl group having 2 to 4 carbon atoms; and R7 and R8 have the same meaning as R5. By this rubber composition, high breaking resistance after heat aging is provided.
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