| abstract |
The present invention relates to a conjugated diene-based copolymer composition and, more specifically, to a conjugated diene-based copolymer composition, a preparation method therefor, and a rubber composition comprising same, and provided is a conjugated diene-based copolymer composition comprising a first conjugated diene-based copolymer and a second conjugated diene-based copolymer, which each comprise an aromatic vinyl monomer-derived repeating unit, a conjugated diene-based monomer-derived repeating unit and a hydroxyalkyl (meth)acrylate monomer-derived repeating unit, wherein the first conjugated diene-based copolymer comprises 0.01-1 wt% of the hydroxyalkyl (meth)acrylate monomer-derived repeating unit, and the second conjugated diene-based copolymer comprises 4.5-6.5 wt% of the hydroxyalkyl (meth)acrylate monomer-derived repeating unit. |