| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rubber composition which is used for manufacturing a rubber excellent in roll processability and crack growth resistance, and contains an alternating copolymer of a conjugated diene compound and a non-conjugated olefin, and a taper copolymer of the conjugated diene compound and the non-conjugated olefin; and to provide a crosslinked rubber composition obtained by crosslinking the rubber composition, and a tire using the rubber composition or the crosslinked rubber composition. <P>SOLUTION: The rubber composition contains the alternating copolymer of the conjugated diene compound and the non-conjugated olefin, and a taper copolymer having at least one block moiety of a block moiety composed of a monomer unit of the conjugated diene compound and a block moiety composed of a monomer unit of the non-conjugated olefin, and a random moiety in which the monomer units of the conjugated diene compound and the non-conjugated olefin are randomly arranged, wherein the mass ratio of the alternating copolymer and the taper copolymer is preferably in the range of 80/20 to 3/97. <P>COPYRIGHT: (C)2012,JPO&INPIT |
