| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: modified polymer is obtained via polymerisation of a conjugated diene compound in the presence of a catalyst which contains a compound of a lanthanide rare-earth element in an organic solvent, followed by modification of the obtained polymer which contains an active organometallic centre with a modifier which contains a functional group capable of a substitution or addition reaction, wherein the degree of modification is not less than 15% and content of cis-1,4-links in the conjugated diene part, measured via Fourier-transform infrared spectroscopy satisfies the relationship (I): content of cis-1,4-links ëÑ98.00 (%)Ç(1), or the degree of modification is not less than 75% and content of cis-1,4-links in the conjugated diene part, measured via Fourier-transform infrared spectroscopy, satisfies the relationship (II): 94.00 (%) ëñcontent of cis-1,4-links <98.00 (%)Ç(II). ^ EFFECT: modified polymer has high rate of modification, provides a rubber composition which contains a modified polymer of a conjugated diene, from which a tyre with low heat generation, satisfactory damage chacteristics and high wear-resistance is obtained. ^ 32 cl, 1 dwg, 13 tbl, 29 ex |
