Lanxess Buna SE 1721 TE Rubber

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Lanxess Buna SE 1721 TE Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Buna SE 1721 TE is a butadiene-styrene copolymer, produced by cold emulsion polymerization, 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 10 ppm which is compliant 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. CAS No: 9003-55-8 Plant: Duque de Caxias-RJ-Brazil Information provided by Lanxess.
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Physical Properties	Original Value	Comments

Volatiles	<= 0.50 %	ASTM D5668
Mooney Viscosity	55	[ME]; ASTM D1645

Chemical Properties	Original Value	Comments
Styrene Content	40 %	Bound; ASTM D5775

Processing Properties	Original Value	Comments
Shelf Life	12.0 Month @Temperature <=40.0 °C

Descriptive Properties
Content	<0.5 %	Free soap
	27.2 percent	Oil
	5 percent	Organic acid

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PLANY8514 / 208907

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