Styron BunaÂ® SB 1502 Schkopau Cold Polymerized Emulsion Styrene Butadiene Rubber (E-SBR)

Category	Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE) , Styrene Butadiene Rubber
Manufacturer	Styron
Trade Name	Buna®
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Styron BunaÂ® SB 1502 Schkopau Cold Polymerized Emulsion Styrene Butadiene Rubber (E-SBR).pdf
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Material Notes:

Composition: BunaÂ® SB 1502 â€“ Schkopau is manufactured by cold polymerization using mixed rosin acid /fatty acid soaps. A non-discoloring stabilizer is added during the production process.Application: BunaÂ® SB 1502 â€“ Schkopau is a general purpose rubber. It can be processed in all sectors of the tyre and rubber industry. BunaÂ® SB 1502 â€“ Schkopau is mainly used for the production of light-colored rubber articles which can also be applied in the food industry (Styron may be consulted regarding applicable regulations).Test Formulation (ASTM D 3189 based on IRB7 black):Polymer - 100.0 parts by massIRB7 industry reference oil furnace carbon black - 50.0 parts by mass Zinc oxide - 3.0 parts by massSulphur - 1.75 parts by massStearic acid - 1.0 parts by massN-tert-butyl-2-benzothiazole sulphenamide (TBBS) - 1.0 parts by massInformation provided by Styron

Physical Properties	Metric	English	Comments
Density	0.930 g/cc	0.0336 lb/inÂ³
Volatiles	0.30 % @Treatment Temp. 105 Â°C, Time 3600 sec	0.30 % @Treatment Temp. 221 Â°F, Time 1.00 hour	5 g in hot air oven; ASTM D5668
Mooney Viscosity	50 @Temperature 100 Â°C	50 @Temperature 212 Â°F	[MU] ML 1+4; ASTM D1646
Ash	0.050 %	0.050 %	ASTM D5667

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	28.4 MPa @Treatment Temp. 145 Â°C, Time 2100 sec	4120 psi @Treatment Temp. 293 Â°F, Time 0.583 hour	Cure; ASTM D412
Elongation at Break	490 %	490 %	ASTM D412
300% Modulus	0.0155 GPa	2.25 ksi	ASTM D412

Chemical Properties	Metric	English	Comments
Styrene Content	23.5 %	23.5 %	Bound; ASTM D5775

Descriptive Properties	Value	Comments
Composition	0.058	Organic Acid, ASTM D5774
Rheometer	15.8 min	t<sub>c</sub> (90), ASTM D5289
	2.6 dNm	ML, ASTM D5289
	21.9 dNm	MH, ASTM D5289
	5.6 min	t<sub>s</sub>2, test temperature 160Â°C; ASTM D5289
	9.2 min	t<sub>c</sub> (50), ASTM D5289

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