BUNA® SE 1721 TE

Buna® SE 1721 TE is a butadiene-styrene copolymer, produced by cold emulsion polimerization, using fatty and rosin soaps as emulsifiers. The elastomer is extended in oil with a PCA (Polycyclic Aromatic Hydrocarbons) content less than 3,0% and PAHs (Individual Polycyclic Aromatic Hydrocarbons) content less than 10 ppm which is compliant with the European directive 2005/69/EC.
The monomers are randomly distributed in the polymer structure, while the butadiene fraction is found in its major part in the trans configuration with small fractions of cis and vinyl configurations.
The rubber is protected by a staining stabiliser system.
Typical Values
Mooney (1+4 @100°C) : 55
Styrene : 40,0 %
37,5 phr TRAE-Oil
Buna® SE 1721 TE is used where there is a need for low cost together with resistance to wear and tear, resistance to cracking and excellent processing conditions. It processes easily in extrusion and calendering, due to its oil content. It is used in tires, retread, conveyor belts, piping, hoses, tubings, carpets, moulded products in general and shoe soles.
Product Group: Buna SE
  • Automotive industry
  • Tire
  • Tire industry
  • Tread

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