BINDER COMPRISING COPOLYMER COMPOSITION, NEGATIVE ELECTRODE FOR SECONDARY BATTERY COMPRISING SAME BINDER, AND SECONDARY BATTERY COMPRISING SAME NEGATIVE ELECTRODE

The present invention relates to: a copolymer composition comprising a first copolymer comprising an acrylic acid-based monomer unit and an acrylamide-based monomer unit, and a second copolymer comprising a vinyl pyrrolidone-based unit, an acrylate-based monomer unit comprising a hydroxyl group, and an acrylamide-based monomer unit; and a negative electrode slurry, a negative electrode, and a secondary battery comprising the copolymer composition.