| abstract |
The invention relates to a composition, the composition comprises a copolymer, a nonpolar hydrocarbon solvent and an anti-aging agent, and the copolymer is an elastomer obtained by polymerization of a polymer monomer containing a conjugated dialkene and a mono-vinyl aromatic hydrocarbon; relative to 100 parts by weight of the copolymer, the content of the nonpolar hydrocarbon solvent is 700-750 parts by weight, the content of the anti-aging agent is 0.03-2.5 parts by weight, and the anti-aging agent comprises 2-methyl-4,6-bis(octylsulfanylmethyl)phenol, 3-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate and tris(2,4-di-t-butylphenyl)phosphite. The invention also relates to oil-extended rubber and a preparation method thereof. The degradation degree of the oil-extended rubber obtained by oil filling and mixing of the composition of the invention is low. |