Buna^® SE 1783 is a styrene-butadiene copolymer with a bound styrene content of 23.5%, produced by cold emulsion polymerization (10℃ maximum) using a mix of rosin and fatty acid coapc as emulsifier, extended in RAE oil with low PAHc content, coagulated by a coagulant aid/acid system. The monomers are randomly dictributed 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 configurationc.
CAS N°: 9003-55-8.
The rubber is protected by a staining antioxidant.