FIELD: chemistry.
SUBSTANCE: copolymer of a conjugated diene compound and an unconjugated olefin contains a copolymer with monotonous variation of composition on the chain, which includes: at least one representative selected from a block sequence comprising monomer links of a conjugated diene compound, and a block sequence comprising monomer links of an unconjugated olefin; and a random sequence comprising randomly arranged monomer links of a conjugated diene compound and monomer links of an unconjugated olefin, wherein the unconjugated olefin component includes a chain structure which does not include a plurality of long-chain block components of an unconjugated olefin with absolute molecular weight greater than 10000, wherein the structure comprises a plurality of short-chain block components of an unconjugated olefin with absolute molecular weight less than 10000. Also disclosed is a rubber composition and a tyre.
EFFECT: copolymer is used to produce rubber with good heat-resistance and bending fatigue strength.
17 cl, 3 tbl, 7 dwg, 6 ex
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