Butonal NS 104 SBR BASF Styrene copolymer >> Styrene butadiene rubber, SBR ADHESIVE BUTONAL NS 104 used in the manufacture of flooring adhesives. is a high molecular weight polymer dispersion which gives excellent legging characteristics in flooring adhesives. In general, additives should be pre - neutralized to pH > 8.5 - 9.0 (depending on the system) prior to blending with Butonal® NS 104. The exact conditions should be determined by laboratory tests. High molecular weight SBR dispersion. Gives very good legging characteristics in flooring adhesives.