| 摘要 |
PCT No. PCT/JP94/00494 Sec. 371 Date Sep. 29, 1995 Sec. 102(e) Date Sep. 29, 1995 PCT Filed Mar. 28, 1994 PCT Pub. No. WO94/22951 PCT Pub. Date Oct. 13, 1994The present invention provides a rubber composition which is balanced in wet skid resistance, low-temperature properties and low fuel consumption and which is suitable as a material for all-weather tire. This rubber composition comprises a random copolymer A having a glass transition temperature of -20 DEG C. or higher, a random copolymer B having a glass transition temperature of -50 DEG C. or lower, and a block copolymer C composed of said two copolymers as block units. The copolymers A, B and C can be produced by copolymerizing an aromatic vinyl compound and a conjugated diene using an alkali metal-based catalyst.
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